Tag Archives: machine servo motor

China Standard High-Speed Servo Motor Drive Corrugated Roofing Sheet Roll Forming Rolling Machine near me manufacturer

Product Description

Product Description

High-speed Servo Motor Drive Corrugated Roofing Sheet Roll Forming Rolling Machine

Detailed Photos

 

Product Parameters

 

Type China Color Steel Corrugated Steel Roll Forming Machine
Thickness Of Material 0.3-0.8mm
Frame Design 350H steel 
Roll Stages 14 stages
Material Of Forming Roller  45# steel CNC Iathes Hard Chrome Coated
Shafts Diameter 70mm
Thickness Of Middle plate 16mm
Main Motor Power 4KW
Speed 13-15M/min
Electric Standard 380V/50HZ/3PH or as your need
Color of Machine  Blue or as your requirements

 

Certifications

 

Packaging & Shipping

The plastic film wraps the entire machine to prevent the machine from being bumped during transportation.
The oil wire rope is finally reinforced in the container. If necessary, there are also skids to pack and reinforce
 the machine parts.

 

Company Profile

HangZhou Hener International Co., Ltd is a professional integrating R & D, production, sales, export and service. We have professional foreign trade sales team, operation team, R & D team and after-sales team. Our R & D cycle for new products is at least 20 days. The working experience of our sales team is 3-5 years. The R & D personnel are all undergraduates. The average equipment maintenance experience of after-sales engineer is 8 years. In order to supply the satisfactory products and services, we have built a modern quality management system which is in strict accordance with international standards.

After Sales Service

1.we can provide all kind of roll forming equipment which can be used to forming all kinds of shape as you required. The company can make non-standard products for client’s requirement.

 

2.About after-sales service. We provide online training for life, you can also come to our company to learn, there will be professional staff to teach, you can also send technicians to your country to repair the machine. The buyer shall bear all costs.

 

3.The warranty period is 24 months. We will provide you with lifetime technical support. The machine can be repaired free of charge for the first year after purchase, including replacement of main components.

 

FAQ

1. Does one machine can only produce one style panel profile?

Not exactly.For wider and double layer making machine. It can produce more than 6 kinds of panels. 

 

2. Do you have after sales support?
Yes, we are happy to give advice and we also have skilled technicians available across the world.We need your machines running in order to keep 
your business running.

 

3. How to visit your company?

a.Fly to ZheJiang  airport:   By high speed train From ZheJiang  Nan to CangZhou Xi (1 hour), then we can pick up you.

b.Fly to ZheJiang  Airport: By high speed train From ZheJiang  HongQiao to HangZhou Xi(4.5 hours), then we can pick up you.

 

4. What can you do if the machine broken?

Our machine’s warranty period is 24months,if the broken parts can’t repair,we can send the new parts replace the broken parts freely,but you need 
pay the express cost   yourself.if after warranty period,we can through negotiation for to solve the problems,and we supply the technical support for 
the whole life of the equipment.

 

5. Can you be responsible for transport?

Yes,please tell me the destination port or address.we have rich experience in transport.

6. Why your price is higher than others?
As we persist on that each factory should put quality at the first place. We spend time and money on developing how to make machines much more automatic, accurate and high quality. 
 

 

An Overview of Worm Shafts and Gears

This article provides an overview of worm shafts and gears, including the type of toothing and deflection they experience. Other topics covered include the use of aluminum versus bronze worm shafts, calculating worm shaft deflection and lubrication. A thorough understanding of these issues will help you to design better gearboxes and other worm gear mechanisms. For further information, please visit the related websites. We also hope that you will find this article informative.
worm shaft

Double throat worm gears

The pitch diameter of a worm and the pitch of its worm wheel must be equal. The 2 types of worm gears have the same pitch diameter, but the difference lies in their axial and circular pitches. The pitch diameter is the distance between the worm’s teeth along its axis and the pitch diameter of the larger gear. Worms are made with left-handed or right-handed threads. The lead of the worm is the distance a point on the thread travels during 1 revolution of the worm gear. The backlash measurement should be made in a few different places on the gear wheel, as a large amount of backlash implies tooth spacing.
A double-throat worm gear is designed for high-load applications. It provides the tightest connection between worm and gear. It is crucial to mount a worm gear assembly correctly. The keyway design requires several points of contact, which block shaft rotation and help transfer torque to the gear. After determining the location of the keyway, a hole is drilled into the hub, which is then screwed into the gear.
The dual-threaded design of worm gears allows them to withstand heavy loads without slipping or tearing out of the worm. A double-throat worm gear provides the tightest connection between worm and gear, and is therefore ideal for hoisting applications. The self-locking nature of the worm gear is another advantage. If the worm gears are designed well, they are excellent for reducing speeds, as they are self-locking.
When choosing a worm, the number of threads that a worm has is critical. Thread starts determine the reduction ratio of a pair, so the higher the threads, the greater the ratio. The same is true for the worm helix angles, which can be one, two, or 3 threads long. This varies between a single thread and a double-throat worm gear, and it is crucial to consider the helix angle when selecting a worm.
Double-throat worm gears differ in their profile from the actual gear. Double-throat worm gears are especially useful in applications where noise is an issue. In addition to their low noise, worm gears can absorb shock loads. A double-throat worm gear is also a popular choice for many different types of applications. These gears are also commonly used for hoisting equipment. Its tooth profile is different from that of the actual gear.
worm shaft

Bronze or aluminum worm shafts

When selecting a worm, a few things should be kept in mind. The material of the shaft should be either bronze or aluminum. The worm itself is the primary component, but there are also addendum gears that are available. The total number of teeth on both the worm and the addendum gear should be greater than 40. The axial pitch of the worm needs to match the circular pitch of the larger gear.
The most common material used for worm gears is bronze because of its desirable mechanical properties. Bronze is a broad term referring to various copper alloys, including copper-nickel and copper-aluminum. Bronze is most commonly created by alloying copper with tin and aluminum. In some cases, this combination creates brass, which is a similar metal to bronze. The latter is less expensive and suitable for light loads.
There are many benefits to bronze worm gears. They are strong and durable, and they offer excellent wear-resistance. In contrast to steel worms, bronze worm gears are quieter than their counterparts. They also require no lubrication and are corrosion-resistant. Bronze worms are popular with small, light-weight machines, as they are easy to maintain. You can read more about worm gears in CZPT’s CZPT.
Although bronze or aluminum worm shafts are the most common, both materials are equally suitable for a variety of applications. A bronze shaft is often called bronze but may actually be brass. Historically, worm gears were made of SAE 65 gear bronze. However, newer materials have been introduced. SAE 65 gear bronze (UNS C90700) remains the preferred material. For high-volume applications, the material savings can be considerable.
Both types of worms are essentially the same in size and shape, but the lead on the left and right tooth surfaces can vary. This allows for precise adjustment of the backlash on a worm without changing the center distance between the worm gear. The different sizes of worms also make them easier to manufacture and maintain. But if you want an especially small worm for an industrial application, you should consider bronze or aluminum.

Calculation of worm shaft deflection

The centre-line distance of a worm gear and the number of worm teeth play a crucial role in the deflection of the rotor. These parameters should be entered into the tool in the same units as the main calculation. The selected variant is then transferred to the main calculation. The deflection of the worm gear can be calculated from the angle at which the worm teeth shrink. The following calculation is helpful for designing a worm gear.
Worm gears are widely used in industrial applications due to their high transmittable torques and large gear ratios. Their hard/soft material combination makes them ideally suited for a wide range of applications. The worm shaft is typically made of case-hardened steel, and the worm wheel is fabricated from a copper-tin-bronze alloy. In most cases, the wheel is the area of contact with the gear. Worm gears also have a low deflection, as high shaft deflection can affect the transmission accuracy and increase wear.
Another method for determining worm shaft deflection is to use the tooth-dependent bending stiffness of a worm gear’s toothing. By calculating the stiffness of the individual sections of a worm shaft, the stiffness of the entire worm can be determined. The approximate tooth area is shown in figure 5.
Another way to calculate worm shaft deflection is by using the FEM method. The simulation tool uses an analytical model of the worm gear shaft to determine the deflection of the worm. It is based on a two-dimensional model, which is more suitable for simulation. Then, you need to input the worm gear’s pitch angle and the toothing to calculate the maximum deflection.
worm shaft

Lubrication of worm shafts

In order to protect the gears, worm drives require lubricants that offer excellent anti-wear protection, high oxidation resistance, and low friction. While mineral oil lubricants are widely used, synthetic base oils have better performance characteristics and lower operating temperatures. The Arrhenius Rate Rule states that chemical reactions double every 10 degrees C. Synthetic lubricants are the best choice for these applications.
Synthetics and compounded mineral oils are the most popular lubricants for worm gears. These oils are formulated with mineral basestock and 4 to 6 percent synthetic fatty acid. Surface-active additives give compounded gear oils outstanding lubricity and prevent sliding wear. These oils are suited for high-speed applications, including worm gears. However, synthetic oil has the disadvantage of being incompatible with polycarbonate and some paints.
Synthetic lubricants are expensive, but they can increase worm gear efficiency and operating life. Synthetic lubricants typically fall into 2 categories: PAO synthetic oils and EP synthetic oils. The latter has a higher viscosity index and can be used at a range of temperatures. Synthetic lubricants often contain anti-wear additives and EP (anti-wear).
Worm gears are frequently mounted over or under the gearbox. The proper lubrication is essential to ensure the correct mounting and operation. Oftentimes, inadequate lubrication can cause the unit to fail sooner than expected. Because of this, a technician may not make a connection between the lack of lube and the failure of the unit. It is important to follow the manufacturer’s recommendations and use high-quality lubricant for your gearbox.
Worm drives reduce backlash by minimizing the play between gear teeth. Backlash can cause damage if unbalanced forces are introduced. Worm drives are lightweight and durable because they have minimal moving parts. In addition, worm drives are low-noise and vibration. In addition, their sliding motion scrapes away excess lubricant. The constant sliding action generates a high amount of heat, which is why superior lubrication is critical.
Oils with a high film strength and excellent adhesion are ideal for lubrication of worm gears. Some of these oils contain sulfur, which can etch a bronze gear. In order to avoid this, it is imperative to use a lubricant that has high film strength and prevents asperities from welding. The ideal lubricant for worm gears is 1 that provides excellent film strength and does not contain sulfur.

China Standard High-Speed Servo Motor Drive Corrugated Roofing Sheet Roll Forming Rolling Machine near me manufacturer China Standard High-Speed Servo Motor Drive Corrugated Roofing Sheet Roll Forming Rolling Machine near me manufacturer

China Standard High Speed Auto Servo Motor Drive Capping Machine near me supplier

Product Description

Product Description

Introduction:

  1. Drawing the cap-screwing experience from home and abroad, our company especially designs this high-speed linear capping machine for the diversity of bottles & caps and screwing-styles, like various plastic threaded caps, spray pump caps and so on.

  2. Linear bottle entrance & bottle exit, this machine has wide adaptability for not only round bottles but also for flat square bottles & alien bottles, with flexible application, convenient operation & high efficiency.

    Virtues:

  3. When bottles of different sizes are to be capped, needn’t change any parts, just do slightly adjustment via handle on the machine, very easy to operate & maintain.

  4. Also it’s with 2 sets bottle-clamping ring belt apparatus, suitable for unstable & tall bottles, widely used for various bottles

    3.With electrically-driven vibrating hopper to auto feed bottles, it is suitable for automatically & continuously plastic caps;.

    4.The pneumatic and electric components are world-renowned brand, very reliable and durable.

    Main technical parameters: (customized based on bottles & caps)

 

Applicable bottle diameter

Φ20-Φ96 mm

Bottle cap size

Φ10-Φ70 mm

Production capacity

60-70pieces/min

Air pressure

0.5-0.7Mpa

Rated voltage

380V 50/60HZ

Gross weight

400kg

External dimension(LWH)

2000×850×1680mm

Total power

2kw

 

Main part Brand
PLC controller ZheJiang Delta
Touch screen ZheJiang weiview
Sensor Korea AUTONICS
Conveyor motor ZheJiang OTG

Packaging & Shipping 

 

After Sales Service

The above machine which we supply it to you, we can give you 1 years after sales warranty, we can also send our engineer to you factory to install this equipment and train your staff, but the Buyer should pay the round air ticket cost and arrange the hotel accommodation as well as the means for Seller’s engineer. We will send some free set of spare parts for you change it.

Payment terms:

30% deposit by T/T before production, 70% balance should be paid by T/T before shipment. but we also accept L/C.

Package:

Standard wooden Case Packing

Shipment terms:

We usually take FOB, but we can also accept EXW,CIF,CNF.

Company Info

HangZhou Change Machinery Co.,Ltd. is a professional supplier of sachets packing machines, bottles/jars filling machines, labeling machines, sealing and capping machines, and various customized production lines, with reasonable price, reliable quality, considerate pre- and after sale services.

We value our customers feedback with great attention and we always explore new technologies to improve our products and our services to meet our customers’ needs. Our Company Motto:”We Change, we get Chance; We never change our faith!” Based on this principle, we aim at a pleasant and mutual beneficial business relationship with our customers and partners all over the world.

FAQ

Types of Screw Shafts

Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which 1 is the best choice for your project? Here are some tips to choose the right screw:

Machined screw shaft

The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.
screwshaft

Acme screw

An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
screwshaft

Lead screw

A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, 1 should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.

Fully threaded screw

A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are 2 major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically 1 millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect 2 elements.
screwshaft

Ball screw

The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.

China Standard High Speed Auto Servo Motor Drive Capping Machine near me supplier China Standard High Speed Auto Servo Motor Drive Capping Machine near me supplier

China OEM Universal Swivel Head Servo Motor Drive Milling Machine (mm-MT210S) near me factory

Product Description

MM-MT210S / Universal Milling Machine / Milling Machine / Turret Milling Machine / RAM Milling Machine / Drilling Milling Machine / Bed-type Milling Machine / Conventional Milling Machine / Vertical Milling Machine / Multi-purpose Milling Machine / Tool Milling Machine / Toolroom Milling Machine

Manual Cheap Vertical Universal Milling Machine Processing (MM-MT210S)
This kind of MM-MT210S is rigid Universal Swivel Head Milling Machine featuring Servo Motor drive feed and rapid feed in all 3 axes. Such powerful heavy-duty universal milling machine with moveable arm and High versatility due to horizontal and vertical milling performance which is been made in ISO9001 factory from CZPT MACHINE with CE Safety Certification.

Rigid Universal Swivel Head Milling Machine with Servo Motor Drive Feed For Excellent Machining Accuracy

Main  Feature :    
Convincing Arguments : Quality, Efficiency and Price 

  • Servo-Motor Drive in X-axis, Y-axis and Z-axis
  • Versatile range of applications include horizontal and vertical milling performance
  • Rugged machine construction
  • Feed system with Servo-motor, continuously controllable
  • Logical, clearly arranged gearshift for speed change
  • Heavy, solid design using premium cast meehanite
  • Hardened and polished guide-ways guarantee top accuracy
  • Setting of the required feed speed by potentiometer on the control panel
  • Finely graduated feeds in all axis driven by advanced Servo-Motor
  • Universal milling head system Huron “adjusts to various angles”
  • Complete with rapid feed in X-axis, Y-axis and Z-axis to reduce downtime
  • Coolant system
  • Smooth action due to polished gearwheels running in an oil sump
  • Table feed in X-axis, Y-axis and Z-axis automatic
  • Both Vertical Milling and Horizontal Milling
  • All guides tempered and adjustable using V-ledges
  • Machine body in heavy cast iron construction for vibration-free working
  • Working Table can Tilt-able 45 degree is optional spare part
  • 3-axis Digital Position Indicator is optional spare part
  • Certificate of Original (CO, FORM A, FORM E, FORM F ) 

Technical  Data :   
 

Product  Name : Universal Swivel Head Milling Machine with Servo Motor
Product  Item : MM-MT 210S
Table Size :  1370 X 320 mm
Max. Load Capacity of Table : 350 KGS
T-slot Size : 3 Pieces X 14 mm (width) X 80 mm (distance)
Distance Spindle to Table (Vertical) : 260- 660 mm
Distance Spindle to Table (Horizontal) : 75 – 475 mm
Distance Spindle to Column : 305 – 805 mm
Work Table Tilt-able : -45 degree to +45 degree (optional)
Horizontal  Spindle  
Spindle Taper (Horizontal) :  ISO 40          (DIN2080)
Spindle Speed (Horizontal) : 35 – 1500 RPM  (12 steps)
Max. Travel of Arm : 400 mm
Vertical Milling Head  
Spindle Taper (Vertical) :  ISO 40          (DIN2080)
Spindle Speed (Vertical) : 45 – 1660 RPM  (11 steps)
Milling Head Swivel Range : ± 360 degree
Travels  
Max. Travel Longitudinal (X): 1000 mm
Max. Travel Cross      (Y) : 380 mm
Max. Travel Vertical    (Z) : 400 mm
Feed Speed Longitudinal : 30 – 830  mm/min
Feed Speed Cross      : 30 – 830  mm/min 
Feed Speed Vertical : 23 – 625  mm/min 
Rapid Feed X-axis : 1335 mm / min
Rapid Feed Y-axis : 1335 mm / min
Rapid Feed Z-axis : 1000 mm / min
Drive Capacity  
Main Motor (Horizontal) : 3000 W
Main Motor (Vertical) : 3000 W
Motor Rating X-axis Feed : 10 Nm  (Servo Motor)
Motor Rating Y-axis Feed : 10 Nm  (Servo Motor)
Motor Rating Z-axis Feed : 10 Nm  (Servo Motor)
Coolant Pump Motor : 90 W
Gross Weight : 2185 KGS
Packing Size : 2000 X 1980 X 2200 mm
Standard Accessory : Servo Motor, Milling Arbor, Coolant System, Machine Light, Central Lubrication, Drawbar M16, Tools and Toolbox

We are Recognized OEM / ODM manufacturer cooperation with world Famous Germany Machinery Companies for more than 25 years, As a result, Our Team has Prodessional Experience and Innovation Technology to support customers in worldwide. If you want to buy Machine Tools, Welcome to visit our company website to send your enquiry to us, Our team is willing to cooperate with you together. 

FAQ 

1.Question : Are you a factory or trading company ? 
Answer: We are an SGS recognized OEM/ODM manufacturer factory with export license. We have an outstanding and experienced team made up of “A” player who have a passion for doing something great to create more value for customers world-wide.
 
 
2. Question :  Why choose cooperate with us ? 
Answer :  — Right people, Right product, Right price ;
          — Company-wide customer awareness ;
          — Reliable Quality and All components from world leading suppliers ;
          — Cost-effective export infrastructure and total supply chain management ; 
 

3. Question : Where is your factory located ?  How can I visit there ?    
Answer: With an ISO90001 certified factory located in HangZhou city , ZheJiang Province , P.R. China . It takes about 2 hours from ZheJiang by train. It is very pleasure for clients to visit us.
 

4. Question :  Can you do OEM ?
Answer :  Yes, we have the ability to do OEM / ODM to meet clients’ requirements.
 

5 Question :  How can I get some product samples ? 
Answer : We are honored to offer you good product samples. New clients are expected to pay for the product sample cost and the international transportation cost. Product Sample cost would be deducted from the customers’ next mass production purchase order in future.   
 

6. Question : How does your factory do regarding quality control ?  
Answer : Assuring Quality is our dignity and quality control engineers specially be responsible for quality checking in each process such as Incoming Quality Control , In Process Quality Control , Outgoing Quality Control , Environment Control, Product Traceability System , Internal Audits & Calibration, Equipment Control & Maintenance , Control of Non-Conforming Materials and etc.
 
 
7. Question : What is the average delivery time ? 
Answer : Most of the time, it would be around 1 week since after confirm receiving customers’ contract money. For mass production purchase order at big quantity, the delivery time could be discussed with each other case by case. 
 

What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
screwshaft

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
screwshaft

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.

Material

Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
screwshaft

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

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