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China manufacturer 1575mm Small Toilet Paper Making Machine Price 5tpd Made Leading Manufacturer near me factory

Product Description

1575mm Small toilet paper making machine price 5TPD made leading manufacturer 

Product Description

The 1575 model Tissue T paper making machine is used for making samll roll paper, beside this, we can also supply many other kind of paper making machins with different paper width. such as kraft paper making machine, culture paper making machine, duplex paper making machine, coated board paper making machine.

The paper pulp raw material can be used waste paper, recycling board, books, cotton, wood, straw, sugarcane, wheat straw, rice straw,bamboo, reed, and other raw materials, they will be deal with to become good pulp for making paper.

Size Information
 

Raw material recycling wasted paper or virgin pulp
Output paper Tissue T paper
Net paper width 1575mm
Capacity 5TPD
Paper weight 13-30g/m2
Gague 2400mm
working speed 80-160m/min
Transmission type AC variable frequency drive division

Packing&Shipping

Products will packaged according to their shapes, weight, transport distance and transport modes.   Large machines will be packaged in sections.every part export machinery will be in standard export package seaworthy wooden case waterproof film, straw rope, carton box etc.

After Sales Service

Before Purchase:  
1.Help customers find the right product by professional technology and business consultation 
2.Provide plans of the machines installation freely
3.Make customized products according to the clients requirements 
4.Online for 24 hours    

After purchase:  
1.Fast and saft delivery 
2.Assist our clients to bulid the equipment
3.Train the first-line operators on site 
4.Regularly visit clients to solve production problems
5.Online for 24 hour

Company Introduction

HangZhou CZPT Machinery Manufacturing Co., Ltd. was founded in 1985, according to the modern enterprise mechanism into a large-scale standardized joint-stock enterprises, with 278 workers,including 23 engineers and technicians,15 senior engineers.In general, CZPT is in the leading place of paper-making industry in China Our factory covers an area of about 60000 square meters, has a technical research and development department, 8 large modern processing workshops, and a quality inspection center, with more than 50 large and medium-sized equipment and scientific research design, manufacturing, testing, assembly and debugging and a series of functions. The company has passed ISO9001:2000 international quality management system certification, self-supporting and export rights. Papermaking machine and papermaking machine parts is our company’s main product.Our factory can produce mechanical pulping equipment, chemical pulping equipment, paper scrap deinking equipment, pulping and paper-making sewage treatment equipment, paper-plastic of CZPT paper separating equipment, etc.We will provide whole services according to our clients’ demand, like technical design, equipment production, installation and test instruction and so on. We will meet and exceed your expectations. Please contact our custom service for details

Certification
The company has passed ISO9001:2000 international quality management system certification, self-supporting and export rights.

Exhibition and Customer visit

We take part in exhibitions related paper machine to show our product and technical,and we welcome all the customers to visit our factory .

Contact us

Sophia
 
 

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.
screwshaft

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
screwshaft

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
screwshaft

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.

China manufacturer 1575mm Small Toilet Paper Making Machine Price 5tpd Made Leading Manufacturer   near me factory China manufacturer 1575mm Small Toilet Paper Making Machine Price 5tpd Made Leading Manufacturer   near me factory

China OEM Cost of Small Toilet Tissue Napkin Paper Making Machine near me factory

Product Description

cost of small toilet tissue napkin paper making machine

Why choose us

Product Description

PRODUCT  INTRODUCTION
 

There  are many models and different capacity toilet tissue paper machine production line,such as 787/1092/1575/1880/2000
/2400/2880/3600
model and so on. The toilet paper rolls making machine  is a set of production line from waste paper
recycled/vigin pulpboard to finished paper,also called: paper tissue making machine jumbo roll machine toilet paper making
machine tissue roll plant.

Detailed Photos

PRODUCT  CONFIGURATION

Product Name

 cost of small toilet tissue napkin paper making machine

Paper Machine Model 

SF-787

SF-1092

SF-1575

SF-1880

SF-2880

Outpaper width(mm)

 787-900

1200

1750

1880-2000

2880MM

Gauge(mm)

1300

1800

2400

2800

3250

Machine Capacity(T/D)

0.8-1

1.5-3

3-5

5-7

10

Cylinder mold specification(mm)

φ 700*1100

 φ1000- 1250*1450

φ1250-1500*1950

φ1500*2350

φ2000×3150mm

Dryer specification(mm)

φ1000*1100

φ1500-2500*1450

φ1500-3000*2000

φ2500*2350

φ3000×3250mm

Work speed(m/min)

20-40

20-80

100-150

100-180

 

 Raw material

Waste paper ;Virgin Pulp Board;Waste paper &Vigin Pulp Board Mixed

Output paper style

Jumbo Roll Paper

Paper weight

15-40g/m2

Drive mode

Reduce drive(250type reducer)

Warranty

12 months

Time of delivery

15-30days

                                                                               
                                                                                    
Click Here To Get Inquiry

Raw Materials
The following raw materials is made into paper pulp with paper pulp equipments (such as hydrapulper etc.) ,then paper pulp is
made into paper with tissue paper machine.
 
Final Paper Product
The machine can make the paper pulp into these final paper product:
             

Purchase guide

In order to provide better service,plz let me know your detailed requirements for tissue paper machine    

                   <> For final paper,which step will you start to procuce?

Type Name Detailed Requirements List
Type A From step 1–Papermaking 1. What machine capacity do you want (ton/day)
2.What jumbo roll paper width do you want ?(mm)
3.What boiler type do you want (coal,gas,feul boiler )
Type B From Step 4–Paperprocessing 0.Jumbo roll paper width do you use?(mm) 

                                                                                   → Click Here To Get More ←

           <> What final paper do you want?
NO. Name Detailed Requirements  List
Line 01 Toilet paper 0.You want toilet paper with tube or without tube? 
Line 02 Facial Tissue 1.What facial tissue size do you want?  2.Soft  facial tissue or box tissue
Line 03

Napkin paper 

1.Napkin paper unfolded size you need  2.need or color printing or not?
Line 04 Handkerchief paper 0.Handkerchief paper size

                                             → Click Here To Get More ←

Packaging & Shipping

Packing&Shipping

Egg tray machine will be packaged according to their shapes, weight, transport distance and transport modes . 

01-The dryer is packed with wood chips for protecting its surface
02- The large diameter roll is packed with wood chips.
03- The steel rolls are packed with plastic film and straw ropes.
04- Electric control cabinet is packed with three-ply board box.
05- Some parts are nude cargo. 

Company Profile

Company Profile

 HangZhou Shunfu Paper Making Machinery Co.,Ltd located  in HangZhou  city ZheJiang province,China,is a leading professional paper machine manufacturer in China with best quality 
and perfect service&good reputation for 30+ years.
In 2571 year,our second new facotry is built.

 

FAQ

Q1:Are you a factory of paper making machine?
A1:Yes,we are.Our factory founded in 1988.Now we have 2 factories.

Q2:What information do you need,if i need to get a quotation from you?
A2:Output paper type;Capacity(tons/24hours);Output paper weight(gram/m2);Raw material

Q3: What’s the payment method?
A3:We can accept T/T,L/C and credit card.

Q4:How long is the guarantee period for paper making machine?
A4: 12 months after the pending operational

Q5:Can I visit your company?    
A5:Yes, you can.Welcome. Our company located in HangZhou city of ZheJiang province. if you take plane,
it will need about 2 hours from HangZhou city, we will pick you up from airport as well as the train station.
We will take you to see our machine running in our chinese clients’ paper mill. welcome you and your team
to visit us at any time!

   LINE 1. If you arrive in ZheJiang , you can take the plane or the high-speed rail to HangZhou ZheJiang ,
  about700kilometers.   We’ll have someone pick you up in HangZhou.
   Line 2. If you arrive in ZheJiang , you can take the plane or the high-speed rail to HangZhou  ZheJiang , about  1000 kilometers. We’ll have someone pick you up in HangZhou.
  LINE 3. If you arrive in HangZhou, you can take the plane or the high-speed rail to HangZhou ZheJiang ,
about 1500kilometers.    We’ll have someone pick you up in HangZhou.
   LINE 4. If you arrive in Yi wu zhengjiang, you can take the plane or the high-speed rail to HangZhou ZheJiang ,       about 900kilometers. We’ll have someone pick you up in HangZhou.

                                             → Click Here To Get More ←

Calculating the Deflection of a Worm Shaft

In this article, we’ll discuss how to calculate the deflection of a worm gear’s worm shaft. We’ll also discuss the characteristics of a worm gear, including its tooth forces. And we’ll cover the important characteristics of a worm gear. Read on to learn more! Here are some things to consider before purchasing a worm gear. We hope you enjoy learning! After reading this article, you’ll be well-equipped to choose a worm gear to match your needs.
worm shaft

Calculation of worm shaft deflection

The main goal of the calculations is to determine the deflection of a worm. Worms are used to turn gears and mechanical devices. This type of transmission uses a worm. The worm diameter and the number of teeth are inputted into the calculation gradually. Then, a table with proper solutions is shown on the screen. After completing the table, you can then move on to the main calculation. You can change the strength parameters as well.
The maximum worm shaft deflection is calculated using the finite element method (FEM). The model has many parameters, including the size of the elements and boundary conditions. The results from these simulations are compared to the corresponding analytical values to calculate the maximum deflection. The result is a table that displays the maximum worm shaft deflection. The tables can be downloaded below. You can also find more information about the different deflection formulas and their applications.
The calculation method used by DIN EN 10084 is based on the hardened cemented worm of 16MnCr5. Then, you can use DIN EN 10084 (CuSn12Ni2-C-GZ) and DIN EN 1982 (CuAl10Fe5Ne5-C-GZ). Then, you can enter the worm face width, either manually or using the auto-suggest option.
Common methods for the calculation of worm shaft deflection provide a good approximation of deflection but do not account for geometric modifications on the worm. While Norgauer’s 2021 approach addresses these issues, it fails to account for the helical winding of the worm teeth and overestimates the stiffening effect of gearing. More sophisticated approaches are required for the efficient design of thin worm shafts.
Worm gears have a low noise and vibration compared to other types of mechanical devices. However, worm gears are often limited by the amount of wear that occurs on the softer worm wheel. Worm shaft deflection is a significant influencing factor for noise and wear. The calculation method for worm gear deflection is available in ISO/TR 14521, DIN 3996, and AGMA 6022.
The worm gear can be designed with a precise transmission ratio. The calculation involves dividing the transmission ratio between more stages in a gearbox. Power transmission input parameters affect the gearing properties, as well as the material of the worm/gear. To achieve a better efficiency, the worm/gear material should match the conditions that are to be experienced. The worm gear can be a self-locking transmission.
The worm gearbox contains several machine elements. The main contributors to the total power loss are the axial loads and bearing losses on the worm shaft. Hence, different bearing configurations are studied. One type includes locating/non-locating bearing arrangements. The other is tapered roller bearings. The worm gear drives are considered when locating versus non-locating bearings. The analysis of worm gear drives is also an investigation of the X-arrangement and four-point contact bearings.
worm shaft

Influence of tooth forces on bending stiffness of a worm gear

The bending stiffness of a worm gear is dependent on tooth forces. Tooth forces increase as the power density increases, but this also leads to increased worm shaft deflection. The resulting deflection can affect efficiency, wear load capacity, and NVH behavior. Continuous improvements in bronze materials, lubricants, and manufacturing quality have enabled worm gear manufacturers to produce increasingly high power densities.
Standardized calculation methods take into account the supporting effect of the toothing on the worm shaft. However, overhung worm gears are not included in the calculation. In addition, the toothing area is not taken into account unless the shaft is designed next to the worm gear. Similarly, the root diameter is treated as the equivalent bending diameter, but this ignores the supporting effect of the worm toothing.
A generalized formula is provided to estimate the STE contribution to vibratory excitation. The results are applicable to any gear with a meshing pattern. It is recommended that engineers test different meshing methods to obtain more accurate results. One way to test tooth-meshing surfaces is to use a finite element stress and mesh subprogram. This software will measure tooth-bending stresses under dynamic loads.
The effect of tooth-brushing and lubricant on bending stiffness can be achieved by increasing the pressure angle of the worm pair. This can reduce tooth bending stresses in the worm gear. A further method is to add a load-loaded tooth-contact analysis (CCTA). This is also used to analyze mismatched ZC1 worm drive. The results obtained with the technique have been widely applied to various types of gearing.
In this study, we found that the ring gear’s bending stiffness is highly influenced by the teeth. The chamfered root of the ring gear is larger than the slot width. Thus, the ring gear’s bending stiffness varies with its tooth width, which increases with the ring wall thickness. Furthermore, a variation in the ring wall thickness of the worm gear causes a greater deviation from the design specification.
To understand the impact of the teeth on the bending stiffness of a worm gear, it is important to know the root shape. Involute teeth are susceptible to bending stress and can break under extreme conditions. A tooth-breakage analysis can control this by determining the root shape and the bending stiffness. The optimization of the root shape directly on the final gear minimizes the bending stress in the involute teeth.
The influence of tooth forces on the bending stiffness of a worm gear was investigated using the CZPT Spiral Bevel Gear Test Facility. In this study, multiple teeth of a spiral bevel pinion were instrumented with strain gages and tested at speeds ranging from static to 14400 RPM. The tests were performed with power levels as high as 540 kW. The results obtained were compared with the analysis of a three-dimensional finite element model.
worm shaft

Characteristics of worm gears

Worm gears are unique types of gears. They feature a variety of characteristics and applications. This article will examine the characteristics and benefits of worm gears. Then, we’ll examine the common applications of worm gears. Let’s take a look! Before we dive in to worm gears, let’s review their capabilities. Hopefully, you’ll see how versatile these gears are.
A worm gear can achieve massive reduction ratios with little effort. By adding circumference to the wheel, the worm can greatly increase its torque and decrease its speed. Conventional gearsets require multiple reductions to achieve the same reduction ratio. Worm gears have fewer moving parts, so there are fewer places for failure. However, they can’t reverse the direction of power. This is because the friction between the worm and wheel makes it impossible to move the worm backwards.
Worm gears are widely used in elevators, hoists, and lifts. They are particularly useful in applications where stopping speed is critical. They can be incorporated with smaller brakes to ensure safety, but shouldn’t be relied upon as a primary braking system. Generally, they are self-locking, so they are a good choice for many applications. They also have many benefits, including increased efficiency and safety.
Worm gears are designed to achieve a specific reduction ratio. They are typically arranged between the input and output shafts of a motor and a load. The 2 shafts are often positioned at an angle that ensures proper alignment. Worm gear gears have a center spacing of a frame size. The center spacing of the gear and worm shaft determines the axial pitch. For instance, if the gearsets are set at a radial distance, a smaller outer diameter is necessary.
Worm gears’ sliding contact reduces efficiency. But it also ensures quiet operation. The sliding action limits the efficiency of worm gears to 30% to 50%. A few techniques are introduced herein to minimize friction and to produce good entrance and exit gaps. You’ll soon see why they’re such a versatile choice for your needs! So, if you’re considering purchasing a worm gear, make sure you read this article to learn more about its characteristics!
An embodiment of a worm gear is described in FIGS. 19 and 20. An alternate embodiment of the system uses a single motor and a single worm 153. The worm 153 turns a gear which drives an arm 152. The arm 152, in turn, moves the lens/mirr assembly 10 by varying the elevation angle. The motor control unit 114 then tracks the elevation angle of the lens/mirr assembly 10 in relation to the reference position.
The worm wheel and worm are both made of metal. However, the brass worm and wheel are made of brass, which is a yellow metal. Their lubricant selections are more flexible, but they’re limited by additive restrictions due to their yellow metal. Plastic on metal worm gears are generally found in light load applications. The lubricant used depends on the type of plastic, as many types of plastics react to hydrocarbons found in regular lubricant. For this reason, you need a non-reactive lubricant.

China OEM Cost of Small Toilet Tissue Napkin Paper Making Machine   near me factory China OEM Cost of Small Toilet Tissue Napkin Paper Making Machine   near me factory

China Custom Small Toilet Paper Roll Making Machine Production Line with high quality

Product Description

Small Toilet Paper Roll Making Machine Production Line

Brief Introduction:

GM-1092mm 1-3T/D Toilet Tissue Paper Making Machinery:
This production line can recycle waste paper to make toilet paper, finished product is paper roll, it include following section:
1.Pulp making production line;
2.Paper making production line;
3.Paper converting section;
4.Boiler section ;

Finished Paper Product:

Technical Data:

Output paper

top quality toilet paper,tissue paper

Raw material

Waste paper, virgin pulp;

Output weight

13-40g/m²

Net width

1092mm(adjust according to clients’ requirement).

Wire width

1450mm

Capacity

1-3tons per day

Rail gauge

1800mm

Design speed

150-180m/min

Working speed

120-150m/min

Drives

AC converter frequency conversion, adjustable speed, drive step by step 

 

Main Frame of The Equipment:

 Part Name

Equipment

Specification

Qty(set)

Mesh cylinder Part

cylinder mould

Φ1500mm×1800mm

1

 

couch roll

Φ400mm×1800mm

1

 

Shore hardness is HS-38°±2.

Dryer part

dryer can

Φ2000mm×1800mm

1

 

touch roll

Φ450mm×1800mm

1

 

Equipped with a group scraper, the shore hardness is HS-90º±2,pneumatic pressurizing device.

Drives and controlling part

AC frequency converting speed regulation, drive part by part.

CAD Drawing of 1092mm 1t/d paper making machine:

Packaging:
1.Fixed all the movable parts with plastic films.
2.Polystyrene foam plate wrapped around.
3.Wrapped with tighted plastic films several circles.
4.Fixed machine on the fumigated plywood pallet with iron wire.
5.Wrapped with wooden board around and nailed on.
Shipments;
1 sea transportation is from HangZhou seaports or other ports.
2 the delivery time is decided by your needed machines or machine parts.But it also follows your needs.

Perfect service :
1.We can supply technical consulting and feasibility report according to client’s current condition ;
2.We can make detail design of workshop and whole factory ;
3.We supply complete installation and test machine ;
4.We train client’s engineer and worker for free ;
5.We supply spare part with best price ;

Company Information:
HangZhou Guangmao machinery manufacturing co.,ltd has developed into a much more competitive company since establishment in 1982.Our complete paper production line sells well in international market, such as Russia,Indonesia,Uzbekistan,Tajikistan,Nigeria,Uganda,Pakistan,Egypt,Bhutan,Fiji,
Brazil,Paraguay,Syria,Libya etc.We also establish good strategic cooperation with local distributor.Mainlymanufactures all kinds of paper machines, toilet paper production line, Kraft paper production line, copy/writing paper production line.We have 4 paper machine producing workshops and more than 110 workers and more than 20 engineers.Our factory total area is 20,000 square meters.We sincerely welcome clients from all over the world visit our factory, any requirement, please contact via email, we will reply you as the first priority.We have passed CE, SGS, ISO quality system certification and all manufacture processes are conducted by the standard strictly.

FAQ:
1.Why we choose your company, what could you do for me?
We have established for 10 years and have the stable production experience.
We use the best steel to guarantee the products’ quality
Warranty:We make our machines 1 year warranty.
We will always give you heart to heart service
We always speak with facts and quality

2.How we visit your factory and what will be the procedure?
Our company located in HangZhou city,ZheJiang province, if you take plane, it needs about 2 hours from HangZhou city, 1.5hours from ZheJiang city and 1 hour from ZheJiang .We will pick you up from airport as well as the train station.We will take you to see our machine running in our Chinese clients’ paper mill.Welcome you and your team to visit us at any time!

3.Could your engineer teach and train our worker and stay in our factory for long time?
Yes, we have very large engineer installation team,they can train and teach your worker to operate paper machine,but you should pay them salary.

4.How much water, electricity should I prepare for producing 1 ton finished paper?
(1) Clean water:5M3
(2) Electricity:250kw/h

5.Which kind of chemical I should prepare:
(1) Deinking agent
(2) Dispersing agent
(3) Bleaching agent

6.How about your company orders?
(1)One set of paper machine line or part is supported by us
(2) If we have urgent needs, we’ll do it for you.

Analytical Approaches to Estimating Contact Pressures in Spline Couplings

A spline coupling is a type of mechanical connection between 2 rotating shafts. It consists of 2 parts – a coupler and a coupling. Both parts have teeth which engage and transfer loads. However, spline couplings are typically over-dimensioned, which makes them susceptible to fatigue and static behavior. Wear phenomena can also cause the coupling to fail. For this reason, proper spline coupling design is essential for achieving optimum performance.
splineshaft

Modeling a spline coupling

Spline couplings are becoming increasingly popular in the aerospace industry, but they operate in a slightly misaligned state, causing both vibrations and damage to the contact surfaces. To solve this problem, this article offers analytical approaches for estimating the contact pressures in a spline coupling. Specifically, this article compares analytical approaches with pure numerical approaches to demonstrate the benefits of an analytical approach.
To model a spline coupling, first you create the knowledge base for the spline coupling. The knowledge base includes a large number of possible specification values, which are related to each other. If you modify 1 specification, it may lead to a warning for violating another. To make the design valid, you must create a spline coupling model that meets the specified specification values.
After you have modeled the geometry, you must enter the contact pressures of the 2 spline couplings. Then, you need to determine the position of the pitch circle of the spline. In Figure 2, the centre of the male coupling is superposed to that of the female spline. Then, you need to make sure that the alignment meshing distance of the 2 splines is the same.
Once you have the data you need to create a spline coupling model, you can begin by entering the specifications for the interface design. Once you have this data, you need to choose whether to optimize the internal spline or the external spline. You’ll also need to specify the tooth friction coefficient, which is used to determine the stresses in the spline coupling model 20. You should also enter the pilot clearance, which is the clearance between the tip 186 of a tooth 32 on 1 spline and the feature on the mating spline.
After you have entered the desired specifications for the external spline, you can enter the parameters for the internal spline. For example, you can enter the outer diameter limit 154 of the major snap 54 and the minor snap 56 of the internal spline. The values of these parameters are displayed in color-coded boxes on the Spline Inputs and Configuration GUI screen 80. Once the parameters are entered, you’ll be presented with a geometric representation of the spline coupling model 20.

Creating a spline coupling model 20

The spline coupling model 20 is created by a product model software program 10. The software validates the spline coupling model against a knowledge base of configuration-dependent specification constraints and relationships. This report is then input to the ANSYS stress analyzer program. It lists the spline coupling model 20’s geometric configurations and specification values for each feature. The spline coupling model 20 is automatically recreated every time the configuration or performance specifications of the spline coupling model 20 are modified.
The spline coupling model 20 can be configured using the product model software program 10. A user specifies the axial length of the spline stack, which may be zero, or a fixed length. The user also enters a radial mating face 148, if any, and selects a pilot clearance specification value of 14.5 degrees or 30 degrees.
A user can then use the mouse 110 to modify the spline coupling model 20. The spline coupling knowledge base contains a large number of possible specification values and the spline coupling design rule. If the user tries to change a spline coupling model, the model will show a warning about a violation of another specification. In some cases, the modification may invalidate the design.
In the spline coupling model 20, the user enters additional performance requirement specifications. The user chooses the locations where maximum torque is transferred for the internal and external splines 38 and 40. The maximum torque transfer location is determined by the attachment configuration of the hardware to the shafts. Once this is selected, the user can click “Next” to save the model. A preview of the spline coupling model 20 is displayed.
The model 20 is a representation of a spline coupling. The spline specifications are entered in the order and arrangement as specified on the spline coupling model 20 GUI screen. Once the spline coupling specifications are entered, the product model software program 10 will incorporate them into the spline coupling model 20. This is the last step in spline coupling model creation.
splineshaft

Analysing a spline coupling model 20

An analysis of a spline coupling model consists of inputting its configuration and performance specifications. These specifications may be generated from another computer program. The product model software program 10 then uses its internal knowledge base of configuration dependent specification relationships and constraints to create a valid three-dimensional parametric model 20. This model contains information describing the number and types of spline teeth 32, snaps 34, and shoulder 36.
When you are analysing a spline coupling, the software program 10 will include default values for various specifications. The spline coupling model 20 comprises an internal spline 38 and an external spline 40. Each of the splines includes its own set of parameters, such as its depth, width, length, and radii. The external spline 40 will also contain its own set of parameters, such as its orientation.
Upon selecting these parameters, the software program will perform various analyses on the spline coupling model 20. The software program 10 calculates the nominal and maximal tooth bearing stresses and fatigue life of a spline coupling. It will also determine the difference in torsional windup between an internal and an external spline. The output file from the analysis will be a report file containing model configuration and specification data. The output file may also be used by other computer programs for further analysis.
Once these parameters are set, the user enters the design criteria for the spline coupling model 20. In this step, the user specifies the locations of maximum torque transfer for both the external and internal spline 38. The maximum torque transfer location depends on the configuration of the hardware attached to the shafts. The user may enter up to 4 different performance requirement specifications for each spline.
The results of the analysis show that there are 2 phases of spline coupling. The first phase shows a large increase in stress and vibration. The second phase shows a decline in both stress and vibration levels. The third stage shows a constant meshing force between 300N and 320N. This behavior continues for a longer period of time, until the final stage engages with the surface.
splineshaft

Misalignment of a spline coupling

A study aimed to investigate the position of the resultant contact force in a spline coupling engaging teeth under a steady torque and rotating misalignment. The study used numerical methods based on Finite Element Method (FEM) models. It produced numerical results for nominal conditions and parallel offset misalignment. The study considered 2 levels of misalignment – 0.02 mm and 0.08 mm – with different loading levels.
The results showed that the misalignment between the splines and rotors causes a change in the meshing force of the spline-rotor coupling system. Its dynamics is governed by the meshing force of splines. The meshing force of a misaligned spline coupling is related to the rotor-spline coupling system parameters, the transmitting torque, and the dynamic vibration displacement.
Despite the lack of precise measurements, the misalignment of splines is a common problem. This problem is compounded by the fact that splines usually feature backlash. This backlash is the result of the misaligned spline. The authors analyzed several splines, varying pitch diameters, and length/diameter ratios.
A spline coupling is a two-dimensional mechanical system, which has positive backlash. The spline coupling is comprised of a hub and shaft, and has tip-to-root clearances that are larger than the backlash. A form-clearance is sufficient to prevent tip-to-root fillet contact. The torque on the splines is transmitted via friction.
When a spline coupling is misaligned, a torque-biased thrust force is generated. In such a situation, the force can exceed the torque, causing the component to lose its alignment. The two-way transmission of torque and thrust is modeled analytically in the present study. The analytical approach provides solutions that can be integrated into the design process. So, the next time you are faced with a misaligned spline coupling problem, make sure to use an analytical approach!
In this study, the spline coupling is analyzed under nominal conditions without a parallel offset misalignment. The stiffness values obtained are the percentage difference between the nominal pitch diameter and load application diameter. Moreover, the maximum percentage difference in the measured pitch diameter is 1.60% under a torque of 5000 N*m. The other parameter, the pitch angle, is taken into consideration in the calculation.

China Custom Small Toilet Paper Roll Making Machine Production Line   with high qualityChina Custom Small Toilet Paper Roll Making Machine Production Line   with high quality

China Good quality Automatic Small Scale Liquid Juice Filling Machine for Hot Juice Milk Beverage with Pulp Energy Drink Coffee Milk Tea Filling Equipment wholesaler

Product Description

Beer filling machine
The Beer Fillling machine adopts the advanced international technology .The design is scientific and reasonable ,appearance is beautiful ,operation and maintenance are convenient ,and it is with high degree of automatization. It is the good machine for choosing by the drinking filling factory.

Specific images

Washing parts
The type of Into bottle is Stainless Steel conveyor belt ,bottle screw shaft connection with Bottle dial .
All 304/316 stainless steel rinse heads with rubber holding parts, water spray style inject design, more save water consumption and more clean .
304/316 Stainless steel Gripper with plastic pad, ensure minimal bottle crash during washing
304/316 stainless steel washing pump make the machine more durable .
Filling parts:
Adopting the way of filling by lifting the bottom of the bottle, plus the function of pre-cover of the centralizing cover with high precise centralization,which ensure the right seating of mouth of the bottle and filling valve,with low liquid loss, it with 2 times vacum pureg the bottle before filling beer ,
 
Capping parts:
1> pulling and capping system, Procelain capping parts, to protect metal crown cap , make sure minimum bottle crash during capping
All 304/316 stainless steel construction
No bottle no capping
Automatic stop when lack of bottle
Capping effect is stable and reliable ,Defective rate ≤0.2% .
 
Control system :
 Inverter     :  MITSUBISHI  
 PLC  :  OMRON
Touch screen :  SIEMENS
Contactor   : SCHNEIDER
Thermo- relay :SCHNEIDER
Air-break switch:    SCHNEIDER
Proximity switch :   TURCK
Photoelectric switch :   BANNER
Air circuit system :   SMC
Water pump   :Nanfang    
Conveyor belt :
Energy saving. High efficient. Adapt to customer factory layout
Special lubrication system, keep products clean, health, safety
Extended service life
Electric eyes design keep whole line running safety and quickly
Overload protection mechanism to effectively ensure the safety of the machine

Technical parameter:

Containers and specifications
Project Name:
Complete full automatic 3-in-1 glass bottle beer filling machine 800-20000BPH
Carbonated water/ Soft Drink / Beer
Material Shape Filling volume Filling level
(mm)
Cap type
Glass Bottle Round Bottle  200-2000ml Distance from bottle neck According request  Screw cap
Crown cap
Adjustable specifications of the bottle type [Middle CZPT Base]Bottle diameter Φ50~Φ85mm Bottle Height 105~300mm
Customers need to buy additional change-over parts for the different bottles.
If using square bottles, then bottle separating system will be added.
Carbonated Drink
Preparation
Syrup melter/ Mixing machine/Filter/Co2 Filter/CO2 Mixer …..
Machine Filling
Processing
Washing bottle — CO2 into bottle — Vacuum — CO2 — Vacuum — Filling Beer — Capping

Auxillary Equipment:

Drink Mixing Machine.
1. suitable beverage types: Cola and lemon.
2. mixing ratio range: 3:1 – 6:1
3. CO2 content: 4 times
4. volume: CO2 consumption of about 4 M3/h
5. CO2 supply pressure: 0.8-1 Mpa
6. CO2 Purity: 99.9%
7. consumption of ethylene glycol solution: water=30M3/h
8. ethylene glycol solution pressure: 1.0Mpa
9. ethylene glycol solution inlet temperature: -2 C
Automatic Glass bottle Labeling Machine.
1/Heat shrink sleeve labeling machine
2/OPP Hot melt labeling machine
3/PVC label stick labeling machine
It adopts double driving structure which is a new and advanced driving device for the thermal shrink sleeve machine, that is, four-wheel driving, self-centering and balanced pressure of 4 wheels. It can achieve the good effect of transmission of labels smoothly, stably and rapidly.
 
 
Bottle packing machine
1/PE film shrink wrapping machine
2/Half-tray shrink wrapping machine
3/Carton box packaging machine
It adopts the photoelectric sensor to detect online, gather signals which are controlled by PLC, and adopts piston as executable element, to realize product conveying, combination, film wrapping, cutting, heat& shrink, cool and finally get the finished product.

Installation service

When you finish the Preparation conditions,our professional after sales service engineer team will go to your factory to install the machine,give you the operating manual,and train your employee until they can operate the machine well.

 

The sample service

1.We can send you the video of the running machine.

2.You are welcome to come to visit our factory,and see the machine running.

 

Customized service

1.We can design the machines according your requirements(materil,power,filling type,the kinds of the bottles,and so on),at the same time we will give you our professional suggestion,as you know,we have been in this industry for many years.

 

After-sales service

1.We will delivery the machine and provide the bill of load on time to make sure you can get the machine quickly

2.When you finish the Preparation conditions,our fast and professional aftersales service engineer team will go to your factory to install the machine,give you the operating manual,and train your employee until they can operate the machine well.

3. We often ask feedback and offer help to our customer whose machine have been used in their factory for some time.

4.We provide 12 months Quality warranty

5.Well-trained & experienced staff are to answer all your inquiries in English and Chinese

6 .24 hours for engineer response (all services part 5days in customer hand by Intl’ courier).

7 .12 Months Quality guarantee and life-long technical support.
8. Good after-sale service offered, please get back to us if you got any questions.

 

Quality Control

We have the single quality department,that make sure the material of the raw materials is  good,and ensure the machine running smoothly.

Worm Gear Motors

Worm gear motors are often preferred for quieter operation because of the smooth sliding motion of the worm shaft. Unlike gear motors with teeth, which may click as the worm turns, worm gear motors can be installed in a quiet area. In this article, we will talk about the CZPT whirling process and the various types of worms available. We’ll also discuss the benefits of worm gear motors and worm wheel.
worm shaft

worm gear

In the case of a worm gear, the axial pitch of the ring pinion of the corresponding revolving worm is equal to the circular pitch of the mating revolving pinion of the worm gear. A worm with 1 start is known as a worm with a lead. This leads to a smaller worm wheel. Worms can work in tight spaces because of their small profile.
Generally, a worm gear has high efficiency, but there are a few disadvantages. Worm gears are not recommended for high-heat applications because of their high level of rubbing. A full-fluid lubricant film and the low wear level of the gear reduce friction and wear. Worm gears also have a lower wear rate than a standard gear. The worm shaft and worm gear is also more efficient than a standard gear.
The worm gear shaft is cradled within a self-aligning bearing block that is attached to the gearbox casing. The eccentric housing has radial bearings on both ends, enabling it to engage with the worm gear wheel. The drive is transferred to the worm gear shaft through bevel gears 13A, 1 fixed at the ends of the worm gear shaft and the other in the center of the cross-shaft.

worm wheel

In a worm gearbox, the pinion or worm gear is centered between a geared cylinder and a worm shaft. The worm gear shaft is supported at either end by a radial thrust bearing. A gearbox’s cross-shaft is fixed to a suitable drive means and pivotally attached to the worm wheel. The input drive is transferred to the worm gear shaft 10 through bevel gears 13A, 1 of which is fixed to the end of the worm gear shaft and the other at the centre of the cross-shaft.
Worms and worm wheels are available in several materials. The worm wheel is made of bronze alloy, aluminum, or steel. Aluminum bronze worm wheels are a good choice for high-speed applications. Cast iron worm wheels are cheap and suitable for light loads. MC nylon worm wheels are highly wear-resistant and machinable. Aluminum bronze worm wheels are available and are good for applications with severe wear conditions.
When designing a worm wheel, it is vital to determine the correct lubricant for the worm shaft and a corresponding worm wheel. A suitable lubricant should have a kinematic viscosity of 300 mm2/s and be used for worm wheel sleeve bearings. The worm wheel and worm shaft should be properly lubricated to ensure their longevity.

Multi-start worms

A multi-start worm gear screw jack combines the benefits of multiple starts with linear output speeds. The multi-start worm shaft reduces the effects of single start worms and large ratio gears. Both types of worm gears have a reversible worm that can be reversed or stopped by hand, depending on the application. The worm gear’s self-locking ability depends on the lead angle, pressure angle, and friction coefficient.
A single-start worm has a single thread running the length of its shaft. The worm advances 1 tooth per revolution. A multi-start worm has multiple threads in each of its threads. The gear reduction on a multi-start worm is equal to the number of teeth on the gear minus the number of starts on the worm shaft. In general, a multi-start worm has 2 or 3 threads.
Worm gears can be quieter than other types of gears because the worm shaft glides rather than clicking. This makes them an excellent choice for applications where noise is a concern. Worm gears can be made of softer material, making them more noise-tolerant. In addition, they can withstand shock loads. Compared to gears with toothed teeth, worm gears have a lower noise and vibration rate.
worm shaft

CZPT whirling process

The CZPT whirling process for worm shafts raises the bar for precision gear machining in small to medium production volumes. The CZPT whirling process reduces thread rolling, increases worm quality, and offers reduced cycle times. The CZPT LWN-90 whirling machine features a steel bed, programmable force tailstock, and five-axis interpolation for increased accuracy and quality.
Its 4,000-rpm, 5-kW whirling spindle produces worms and various types of screws. Its outer diameters are up to 2.5 inches, while its length is up to 20 inches. Its dry-cutting process uses a vortex tube to deliver chilled compressed air to the cutting point. Oil is also added to the mixture. The worm shafts produced are free of undercuts, reducing the amount of machining required.
Induction hardening is a process that takes advantage of the whirling process. The induction hardening process utilizes alternating current (AC) to cause eddy currents in metallic objects. The higher the frequency, the higher the surface temperature. The electrical frequency is monitored through sensors to prevent overheating. Induction heating is programmable so that only certain parts of the worm shaft will harden.

Common tangent at an arbitrary point on both surfaces of the worm wheel

A worm gear consists of 2 helical segments with a helix angle equal to 90 degrees. This shape allows the worm to rotate with more than 1 tooth per rotation. A worm’s helix angle is usually close to 90 degrees and the body length is fairly long in the axial direction. A worm gear with a lead angle g has similar properties as a screw gear with a helix angle of 90 degrees.
The axial cross section of a worm gear is not conventionally trapezoidal. Instead, the linear part of the oblique side is replaced by cycloid curves. These curves have a common tangent near the pitch line. The worm wheel is then formed by gear cutting, resulting in a gear with 2 meshing surfaces. This worm gear can rotate at high speeds and still operate quietly.
A worm wheel with a cycloid pitch is a more efficient worm gear. It reduces friction between the worm and the gear, resulting in greater durability, improved operating efficiency, and reduced noise. This pitch line also helps the worm wheel engage more evenly and smoothly. Moreover, it prevents interference with their appearance. It also makes worm wheel and gear engagement smoother.
worm shaft

Calculation of worm shaft deflection

There are several methods for calculating worm shaft deflection, and each method has its own set of disadvantages. These commonly used methods provide good approximations but are inadequate for determining the actual worm shaft deflection. For example, these methods do not account for the geometric modifications to the worm, such as its helical winding of teeth. Furthermore, they overestimate the stiffening effect of the gearing. Hence, efficient thin worm shaft designs require other approaches.
Fortunately, several methods exist to determine the maximum worm shaft deflection. These methods use the finite element method, and include boundary conditions and parameter calculations. Here, we look at a couple of methods. The first method, DIN 3996, calculates the maximum worm shaft deflection based on the test results, while the second one, AGMA 6022, uses the root diameter of the worm as the equivalent bending diameter.
The second method focuses on the basic parameters of worm gearing. We’ll take a closer look at each. We’ll examine worm gearing teeth and the geometric factors that influence them. Commonly, the range of worm gearing teeth is 1 to four, but it can be as large as twelve. Choosing the teeth should depend on optimization requirements, including efficiency and weight. For example, if a worm gearing needs to be smaller than the previous model, then a small number of teeth will suffice.

China Good quality Automatic Small Scale Liquid Juice Filling Machine for Hot Juice Milk Beverage with Pulp Energy Drink Coffee Milk Tea Filling Equipment   wholesaler China Good quality Automatic Small Scale Liquid Juice Filling Machine for Hot Juice Milk Beverage with Pulp Energy Drink Coffee Milk Tea Filling Equipment   wholesaler

China Good quality 2800mm 150t Single Wire Single Cylinder Toilet Paper Machine for Small Roll Factory wholesaler

Product Description

2800mm 250t/D Single Wire Single Cylinder Toilet Paper Machine For Small Roll Factory

1.Buying Xihu (West Lake) Dis.:

In order to recommend tissue paper making machine  and make detailed technical proposal for you as soon as possible, please tell us the following technical parameters:

(1)What kind of paper do you want to produce?
(2)What kind of raw material you will use?
(3)How many tons do you want to produce per day(24hours)?
(4)What is the output paper width of jumbo roll?–mm;
(5)What is the output paper weight(thickness)?–gsm.

2.Technical Requirement
 

 

 

Paper grade Toilet paper
Basis weight range 13-22g/m²
Net paper width 2800mm
Working speed 200m/min
Design speed 250m/min
Drive speed 250m/min
Balancing speed 250m/min
Reeling drum roll balance 250m/min
Crawling speed 25m/min
Capacity 10t/d
Rail gauge 3700mm
Layout type A layer floor layout, sub-left, right hand arrangement
Banner quantitative difference ±1.5%
Wrinkle rate 25-35%
Drive type Segment drive, AC variable speed control.

3.Main Equipments

Pulp Making Equipments
High contentration hydrapulper, Vibrating screen, Pressure Screen,Double disc pulp refiner, Pulp pump, Low concertration cleaner,Impeller, High concentration cleaner, High speed washer, Decker thickener, Fiber separator, Rejector separator

Paper Making Equipments
Headbox, Cylinder mold, Cylinder vat, Touch roll, Press roll, Leading roll, Dryer, Sizing machine, Calender machine, Winding machine, Rewinder, Foundation frame.

4.Raw material

1.Waste paper and virgin pulp
2.Wood , rice straw, cotton, bagasse, bamboo etc.
There will be different structures of pulp making line with different raw materials . So please make it clear in your requirements. Then we will recommend suitable machine to you.

5.Flow Chart

6.Final Product

7.Company Profile

HangZhou City HangZhou Paper Making machinery Co.,Ltd has developed into a much more competitive company since
establishment in 1999. We mainly manufactures all kinds of paper machines, toilet paper production line, Kraft paper production line, copy/writing paper production line. We have 4 paper machine producing workshops and 1 international trade department, and more than 110 workers and more than 20 engineers. Our factory total area is 20,000(96000)square meters. We sincerely welcome clients from all over the world visit our factory, any requirement, please contact via email, we will reply you as the first priority.

A.Business scope:
1.various pulp making machine;
2.various paper making machine;
3.various paper processing machine;
4.various spare parts;
5.Technical service,such as installation,improve old paper machine.

B.Technology Strength:
1.1 professional technician team of 116 engineers and 12 experts;
2.35 years rich practice experience;
3.1 innovative research team,always follow the advanced technology of Finland,Denmark and Italy;
4.skilled and careful installation team.

C. Our market:
Our machine sells well in more than 30 countries and regions, such as Moscow, USA, Canada, Brazil, Paraguay, Australia, Uzbekistan, Kazakhstan, Kyrghyzstan, Tajikhstan, Mogolia, Nigeria, Uganda, Egypt, Ethiopia, Bangladesh, Pakistan, Bhutan, Indonesia, Fiji Island, Saudi Arabia, Oman, Algeria, Syria, Libya,etc.
High quality and perfect service have reserved customer’s praise and more orders,we also establish good strategic cooperation with our client.

8.Packing & Delivery

Kraft Paper Making Machine Fixed all the movable parts with plastic films.
Polystyrene foam plate wrapped around.
Wrapped with tight plastic films several circles.
Fixed machine on the fumigated plywood pallet with iron wire.
Wrapped with wooden board around and nailed on. 

9. Design and installation:

1.We have professional team with rich experience of paper mill designed by CAD software.You only need to tell us your land dimension,we will make your future paper mill design.
2. We have very large engineer installation team,they can train and teach your worker to operate paper machine, but you should pay them salary.

10.About Our Service

Pre-sale Service
—-24 hours phone, email, trade manager online services;
—-We will supply the detailed project report, detailed general drawing, detailed flow process design, detailed layout factory drawing for you until meet your requirement;
—-we welcome you to come to our paper making machine factory and paper mill factory to have a look and check;
—-We will tell you all the necessary cost when set up a paper mill factory;
—-We will answer you all the questions within 24 hours;
—-We will send you various quality paper samples made by our paper machine for free;
—-We can supply turn key-project service.
On-purchase Service
—-We will accompany you to check all the equipment made by us, and help you to make the plan of installation;
—-We will supply paper machine assembly drawing, the foundation and foundation load diagram, transmission diagram, formal installation drawing, use and installation instructions and a full set of technical data after signing the contract.
After-sales Service
—-We will delivery the machine as soon as possible according to your requirement, within 50 days;
—-We will send rich practiced experience engineers to you to install and test the machine and train your worker for free;
—-We will give you 1 year guarantee time after the machine can run well;
—-After 1 year, we can CZPT and help you to maintain the machines;
—-Every 2 years, we can help to overhaul the complete machines for free;
—-We will send you spare part in lower price.

How to Choose the Right Worm Shaft

You might be curious to know how to choose the right Worm Shaft. In this article, you will learn about worm modules with the same pitch diameter, Double-thread worm gears, and Self-locking worm drive. Once you have chosen the proper Worm Shaft, you will find it easier to use the equipment in your home. There are many advantages to selecting the right Worm Shaft. Read on to learn more.
worm shaft

Concave shape

The concave shape of a worm’s shaft is an important characteristic for the design of a worm gearing. Worm gearings can be found in a wide range of shapes, and the basic profile parameters are available in professional and firm literature. These parameters are used in geometry calculations, and a selection of the right worm gearing for a particular application can be based on these requirements.
The thread profile of a worm is defined by the tangent to the axis of its main cylinder. The teeth are shaped in a straight line with a slightly concave shape along the sides. It resembles a helical gear, and the profile of the worm itself is straight. This type of gearing is often used when the number of teeth is greater than a certain limit.
The geometry of a worm gear depends on the type and manufacturer. In the earliest days, worms were made similar to simple screw threads, and could be chased on a lathe. During this time, the worm was often made with straight-sided tools to produce threads in the acme plane. Later, grinding techniques improved the thread finish and reduced distortions resulting from hardening.
When a worm gearing has multiple teeth, the pitch angle is a key parameter. A greater pitch angle increases efficiency. If you want to increase the pitch angle without increasing the number of teeth, you can replace a worm pair with a different number of thread starts. The helix angle must increase while the center distance remains constant. A higher pitch angle, however, is almost never used for power transmissions.
The minimum number of gear teeth depends on the angle of pressure at zero gearing correction. The diameter of the worm is d1, and is based on a known module value, mx or mn. Generally, larger values of m are assigned to larger modules. And a smaller number of teeth is called a low pitch angle. In case of a low pitch angle, spiral gearing is used. The pitch angle of the worm gear is smaller than 10 degrees.
worm shaft

Multiple-thread worms

Multi-thread worms can be divided into sets of one, two, or 4 threads. The ratio is determined by the number of threads on each set and the number of teeth on the apparatus. The most common worm thread counts are 1,2,4, and 6. To find out how many threads you have, count the start and end of each thread and divide by two. Using this method, you will get the correct thread count every time.
The tangent plane of a worm’s pitch profile changes as the worm moves lengthwise along the thread. The lead angle is greatest at the throat, and decreases on both sides. The curvature radius r” varies proportionally with the worm’s radius, or pitch angle at the considered point. Hence, the worm leads angle, r, is increased with decreased inclination and decreases with increasing inclination.
Multi-thread worms are characterized by a constant leverage between the gear surface and the worm threads. The ratio of worm-tooth surfaces to the worm’s length varies, which enables the wormgear to be adjusted in the same direction. To optimize the gear contact between the worm and gear, the tangent relationship between the 2 surfaces is optimal.
The efficiency of worm gear drives is largely dependent on the helix angle of the worm. Multiple thread worms can improve the efficiency of the worm gear drive by as much as 25 to 50% compared to single-thread worms. Worm gears are made of bronze, which reduces friction and heat on the worm’s teeth. A specialized machine can cut the worm gears for maximum efficiency.

Double-thread worm gears

In many different applications, worm gears are used to drive a worm wheel. These gears are unique in that the worm cannot be reversed by the power applied to the worm wheel. Because of their self-locking properties, they can be used to prevent reversing motion, although this is not a dependable function. Applications for worm gears include hoisting equipment, elevators, chain blocks, fishing reels, and automotive power steering. Because of their compact size, these gears are often used in applications with limited space.
Worm sets typically exhibit more wear than other types of gears, and this means that they require more limited contact patterns in new parts. Worm wheel teeth are concave, making it difficult to measure tooth thickness with pins, balls, and gear tooth calipers. To measure tooth thickness, however, you can measure backlash, a measurement of the spacing between teeth in a gear. Backlash can vary from 1 worm gear to another, so it is important to check the backlash at several points. If the backlash is different in 2 places, this indicates that the teeth may have different spacing.
Single-thread worm gears provide high speed reduction but lower efficiency. A multi-thread worm gear can provide high efficiency and high speed, but this comes with a trade-off in terms of horsepower. However, there are many other applications for worm gears. In addition to heavy-duty applications, they are often used in light-duty gearboxes for a variety of functions. When used in conjunction with double-thread worms, they allow for a substantial speed reduction in 1 step.
Stainless-steel worm gears can be used in damp environments. The worm gear is not susceptible to rust and is ideal for wet and damp environments. The worm wheel’s smooth surfaces make cleaning them easy. However, they do require lubricants. The most common lubricant for worm gears is mineral oil. This lubricant is designed to protect the worm drive.
worm shaft

Self-locking worm drive

A self-locking worm drive prevents the platform from moving backward when the motor stops. A dynamic self-locking worm drive is also possible but does not include a holding brake. This type of self-locking worm drive is not susceptible to vibrations, but may rattle if released. In addition, it may require an additional brake to keep the platform from moving. A positive brake may be necessary for safety.
A self-locking worm drive does not allow for the interchangeability of the driven and driving gears. This is unlike spur gear trains that allow both to interchange positions. In a self-locking worm drive, the driving gear is always engaged and the driven gear remains stationary. The drive mechanism locks automatically when the worm is operated in the wrong manner. Several sources of information on self-locking worm gears include the Machinery’s Handbook.
A self-locking worm drive is not difficult to build and has a great mechanical advantage. In fact, the output of a self-locking worm drive cannot be backdriven by the input shaft. DIYers can build a self-locking worm drive by modifying threaded rods and off-the-shelf gears. However, it is easier to make a ratchet and pawl mechanism, and is significantly less expensive. However, it is important to understand that you can only drive 1 worm at a time.
Another advantage of a self-locking worm drive is the fact that it is not possible to interchange the input and output shafts. This is a major benefit of using such a mechanism, as you can achieve high gear reduction without increasing the size of the gear box. If you’re thinking about buying a self-locking worm gear for a specific application, consider the following tips to make the right choice.
An enveloping worm gear set is best for applications requiring high accuracy and efficiency, and minimum backlash. Its teeth are shaped differently, and the worm’s threads are modified to increase surface contact. They are more expensive to manufacture than their single-start counterparts, but this type is best for applications where accuracy is crucial. The worm drive is also a great option for heavy trucks because of their large size and high-torque capacity.

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China factory Used Diesel Small Manual Asphalt Milling Machine with Electric Motor with Hot selling

Product Description

used diesel small manual asphalt milling machine with electric motor
Road Milling Machine is applied to remove epoxy coatings, thermoplastic coatings, paint and traffic line,glue, oil, contaminants, mill scale and rust, while it can also be used to clean the snow and ice on roads or bridges. This machine can be used to remove the old paint, coating, and traffic lines on road surfaces to renovate roads.It is for scarifying and milling, clearing worn epoxies and adhesives in large area, also can be used to clear highway lines.

Feature of  concrete milling machine

1.Flexible braking function to adjust walking speed.
2.Precise adjustable scarifying depth which can up to 5mm/0.2 inch
3.Suitable for heavy work with powerful engine and motor.
4.Dust collector can be connected through its socket.
5.Durable tungsten steel cutting tools, diameter 48mm/2 inch
6. Power-driven, travel automatically with hands on its handle.
7. With safety switch, you can switch it off quickly and equipped with vacuum connecting devices.
Technical parameter of  concrete milling machine

ZheJiang CZPT Machinery Co., Ltd.
Model YGM-250 E YGM-300 E
Drive Electric Drive Electric Drive
Power 5.5 Kw 7.5 Kw
Blade Qty (pc) 105
 
     
(6 Milling teeth)
120   
 
 
(8 Milling teeth)
Drum (6 axles)    
Milling Depth (mm) 1-5 adjustable 1-6 adjustable
Working Efficiency 200 m2/h 300 m2/h
Dimension (mm) 1125*500*1125 1125*500*1125
Weight (Kg) 150 230

Our services
1.Any inquiries will be replied within 12 hours.
2.Professional manufacturer, Welcome to visit our factory at any time.
3.High quality, fashion designs, reasonable & competitive price and fast lead time.
4. Protection of your sales area, ideas of design and all your private information.
5.Shipping:We have strong cooperation with DHL, TNT, UPS, FedEx, EMS, China air post.You also can choose your own shipping forwarder.

Company Information
ZheJiang CZPT Machinery Co., Ltd. is a large machinery manufacturing enterprise which focuses on research and development, production and sales of mining, tunnel construction, road and bridge construction equipments and so on.
We believes that good quality can give us survival, thus we only provide you top products. All the products with high quality meet international standards and are highly estimated by all clients at home and abroad.
All the staff in our company are professionally trained, so we can recommend you the most appropriate equipment. Every machine will be strictly examined before delivery.

packaging &shipping

1. Packaging: 1)Wrapped by proctective film;
                         2)Packed by standard import & export wooden cases or carton boxes.
2. Shipping:    By logistics; by automobile; by train; by shipping; by air etc.

 

Contact us

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.
screwshaft

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
screwshaft

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
screwshaft

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.

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