Category Archives: Cnc Machining

Saving labor cost by printing 3d hand model

Cnc Machining

With the maturity of SLA light-curing 3D printing technology, some smart tablet manufacturers have begun to use 3D printers to include in their enterprise plans. The 3D printing tablet Model is completely proofed according to the original shape of the plan, with low error. Compared with the traditional prototype, it saves the cost of proofing, shortens the manufacturing cycle of the prototype model, ensures the confidentiality of the product development planning scheme, and greatly improves the work efficiency and product development. According to the feedback from the manufacturer using the SLA 3D printing prototype of Harbin Industry, the business volume has increased rapidly and the labor cost has been saved by 40% since the use of the D printer prototype for about a year since March. Let’s see how 3D can help hand board manufacturers save 40% of labor costs!

The hand board is also called “model” and also called “first board” many years ago “. It is not only an important link to verify the feasibility of the product, but also an important link to find out the shortcomings of the product. Shortcomings. A more direct and effective method of shortcomings is to refer to the handboard to improve the shortcomings and deficiencies in the planning. The handboard can solve the above problems well. The handboard processing method has also evolved from manual to milling machines, engraving machines and CNC processing to today’s 3D printing manual models. Although many handboard manufacturers still Although they are used for CNC processing, the disadvantage of CNC has become a headache for the owners of many handicraft factories.

What are the problems of traditional hand board manufacturer CNC CNC machine tools in making hand board models?

1、 High dependence on labor: The complexity of CNC machine tool processing in traditional hand board manufacturers requires the proficiency of workers, while the labor cost in China has increased year by year in the past decade. In 1997, the salary of CNC CNC machine tool workers was 1000 yuan, and now the per capita salary is 6000-8000 yuan. Artificial masters have the right to speak. The younger generation of workers are unwilling to do this kind of work, and there is no successor to the technology. The workshop is noisy, the environment is poor, and there is a serious loss of automotive parts in the hand board industry.

2、 It is impossible to make a hand board with complex structure: some hand boards with very high accuracy, circuitous or hollow, and complex pure curved surface structures, CNC CNC machine tools are often unable to make them, even if they are reluctantly made, it will take a long time, and the cost is also very high. CNC machine tools with internal structure need to be separated and then assembled together. Many hand board manufacturers have actually lost their orders.

3、 Error prone: The accuracy standard of CNC machine tool itself causes some errors, especially when the operator is not skilled enough. This means that design defects will not be found before production, resulting in costly rework and time loss.

3D hand board model

What are the advantages of using printers in 3D prototype factory?

  1. Short production cycle, without cutting tools and molds: CAD digital model is directly processed and formed, with fast processing speed and short production cycle, without cutting tools and molds. CNC CNC machine tools usually need one week to deliver, while CNC machine tools usually need one week to print and one day to deliver. CNC CNC machine tools need to be on duty manually, while 3D printing does not need manual intervention. Basically, unattended production can be realized in the daytime or at night. The production efficiency is significantly improved and the cycle is shortened.
  2. Reduce the cost of complex hand models: 3D printing technology can handle prototypes and molds with complex structures, or use traditional and mold. Industrial 3D uses printer SLA light curing technology to illuminate the surface of light curing materials (mainly photosensitive resin) with a specific intensity of laser focus, so as to make point to line and line to surface layer by layer. Ordinary hand boards or hand boards are relatively complex, and printing time and materials are not difficult. Resin 3D printing can be used to make some CNC machine tools that cannot manufacture precision structures, such as hollow-out, barb, hollow hand board model, etc.
  3. There is no need for high education or senior experience. Simple and easy to use: Although 3D printing technology is very new, it is very simple to operate because most 3D printing processes are completed by computer intelligence. Users who use industrial 3D printers can start operation as long as they have received 3D training. It does not require high education or senior experience, and is easy to operate.
  4. Environmental protection and health, high material utilization: traditional CNC machine tool workshop will produce a lot of dust and noise. In such a working environment, it is easy to cause anxiety and fatigue, which many people cannot bear. 3D printing technology, these problems do not exist. The sound produced by the industrial 3D printer when running is less than 10 decibels, which is smaller than the sound people usually communicate with. Its matching 3D printing material is also environmentally friendly and harmless. Unlike CNC CNC lathes, 3D printing hand boards are made by carving. Most of the materials are wasted, and the utilization rate is less than 35%. The utilization rate of 35% nylon 3D printing hand boards is more than 75%, which greatly reduces the waste cost of materials.
  5. Customization accelerates product design innovation: 3D printers can quickly create a tangible physical model. The reduction of costs will inevitably lead to many industries being more willing to innovate in design, which in fact brings better experience to consumers of products. The demand for personalized customization will also be the continuous improvement of 3D with the popularization of printing technology.

Why do many tablet manufacturers choose 3D 3D printers?

Leading technology, efficient and stable

Considering the particularity of the hand board industry, industrial 3DR&D3D printers are compatible with many software hand board manufacturers at home and abroad. You can select appropriate software according to your needs, such as one-key support and graphic file repair function software, to achieve a perfect connection between metal 3D printing technology and the hand board field. The high-speed galvanometer scanner is used as the core hardware to ensure the high efficiency and stability of the machine.

Material performance advantages:

Industrial three-dimensional light-cured resin has the characteristics of high temperature resistance, high toughness, high strength, softness and transparency, which can meet the requirements of different hand boards, so as to achieve the perfect presentation of products.

Supply chain advantages:

3D has the R&D capability of the overall 3D printing sculptural and statues, which can comprehensively improve the quality of products and services. Industrial 3D is not only a manufacturer and seller of equipment, but also a comprehensive solution provider of 3D printing industry and technical services. The company focuses on the research and development of printing equipment, manufacturing and industrial application solutions of three D companies; Focus on the construction of 3D printing modernization, intelligence and digital industrial manufacturing scenes; Focus on 3D R&D and process development and printing related technical equipment.

Products that 3-di.com can process include:

sls-3d-printing,sla-3d-printing,slm-3d-printing, mjf-3d-printing, fdm-3d-printing,dlp-3d-printing, rapid-prototyping, cnc-machining, 3d-modeling,3d-scanning

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Influence of 3D printing on mechanical manufacturing and automation

Cnc Machining

3D printing technology is widely used because of its flexibility and convenience. Printing technology involves different molding processes and material classification.

There is no uniform standard now. According to the volume of the equipment, it can be divided into desktop, medium and large 3D printers; It can be divided into: aerospace, military, industrial, civil 3D printers, etc. 3D printing propsis a comprehensive technology combining mechanical engineering technology, computer software technology, 3D model technology, data processing technology and other disciplines. To a certain extent, it meets the needs of the development of mechanical manufacturing, and brings ultra-fast molding speed, unparalleled printing speed, high material utilization rate and short production cycle in industrial production, greatly improving the degree of automation and digitalization.

At present, XYZPrinting partpro150_ XP, mechanical manufacturing and automation are mainly based on computers, combined with mechanical equipment and automation, and through a series of manufacturing technologies, such as computer-aided design and manufacturing, flexible manufacturing system, and then constitute a computer integrated manufacturing system. Its applications mainly include CNC machines and machining centers.

The impact of printing on mechanical manufacturing and automation mainly has two aspects: positive and negative.

It has two impacts on the development of mechanical manufacturing and automation. 3D printing medical uses a variety of materials, but the material itself has limitations and hazards. Especially, the more difficult it is to degrade materials, which directly threatens human health and safety. The promotion of 3D printing and laser scanning technology may also lead to a large number of imitation products, which will bring some challenges to the development of the design industry and commodity costs, such as furniture products, tools, and even intellectual property issues.

In the information age, printing in chip manufacturing still has some limitations. Because the relevant parts of different materials are difficult, it is necessary to improve and improve between energy consumption, high cost and low efficiency. 3D Printing jewellery is an important embodiment and component of the development of mechanical manufacturing automation.

Compared with traditional printers, the liquid or powder emitted by 3D printers are different printing materials, such as light curing, rapid direct manufacturing and molding, layer-by-layer control computer superposition, and finally the physical object can be obtained. The workflow of 3D printer is to create a project, use CAD software, copy the model to 3 printers, print by setting various adjustable parameters, and specifically compose control elements, mechanical elements, print heads, consumables and media If all processes and parts are automated, 3D printing technology and mechanical manufacturing automation will be more closely linked.

Products that 3-di.com can process include: 3d printing applianc, 3d printing sand table

For more information about us, please contact us directly.

Copyright notice: This article comes from https://3-di.com/

A Brief Introduction To Carbon Fiber

Cnc Machining
There are many members of the carbon material family, including macro-scale coke, diamond, expanded graphite,carbon fiberand nanoscale carbon nanotubes, fullerenes and graphene. Among them, coke is mainly used in blast furnace ironmaking, mechanical casting, calcium carbide production, chemical fertilizer chemical gas production, etc. The real materials used for material preparation are expanded graphite, carbon fiber and various nano-carbon materials. These carbon materials either become part of composite materials as fillers, or themselves become a series of products that can be seen everywhere in production and life, such as sealing materials and building materials, through processes such as weaving and molding.
 
 
Carbon fiber is a fibrous carbon material that is lighter than aluminum, stronger than steel, thinner than human hair, and contains more than 90% carbon. It has excellent properties such as high impact strength, high tensile modulus, low density, high temperature resistance, ablation resistance, corrosion resistance, high electrical and thermal conductivity, low thermal expansion, self-lubrication and good biocompatibility. Most carbon fibers are composed of incomplete graphite crystals arranged along the fiber axis. They are hexagonal network layered accumulations composed of sp^2 hybridization. The crystallites composed of carbon atoms are the microstructural units of carbon fibers. The layer spacing is about 0.3360~0.3440mm, and the parallel layers are irregularly stacked, lacking three-dimensional orderly arrangement, and showing a turbulent layer structure. When carbon fiber is annealed at high temperature, it experiences a high temperature above 2500°C. When the carbon content is greater than 99%, the interlayer spacing decreases, indicating that the carbon atoms have transformed from the turbostratic structure to the three-dimensional ordered graphite structure, forming a graphite-like structure. These two types of fibers are divided into carbon fibers and graphite fibers in China and the United States according to different heat treatment temperatures, while in Japan and Europe, they are used to be collectively referred to as carbon fibers.
 
After carbon fiber was invented to replace filament in the early 18th century, it is widely used in textiles, materials, military, aerospace, atomic energy and other fields. Since carbon fiber began to develop on a large scale with technology, its output has grown at an average rate of more than 15% every year. By 1990, the world’s total carbon fiber production was 10,496t. In order to meet the needs of general industrial carbon fiber, its industry turned to large The tow direction is developed and the production scale is expanded from a hundred tons to a thousand tons.

 

ISO 9001 certified. BE-CU Prototype Offering CNC machining carbon fiber and other manufacturing services for carbon fiber marterial. Various capabilities include notching, labeling, drilling carbon fiber, grinding, laser cutting carbon fiber, finishing, plating, marking, CNC milling carbon fiber and turning carbon fiber.We stock high quality 3k carbon fiber sheet in a variety of thickness, types and finish. Its a great material used in applications where light weight and strength are needed such as drones. Unlike other workshops, we have no min order and are often filling orders with a single part. We also don’t make you pay for the full sheet and you only get charged for what is used. With a large selection of material, you should find everything you need to make your project come to life. We are also able to handle larger production runs and provide a competitive pricing. If we don’t have the material or finish you require, we are more the willing to look at bringing it in for you.

What Is Carbon Fiber?Carbon fiber is made of polyacrylonitrile (PAN) (or pitch, viscose) and other organic fibers by carbonization (removal of most elements except carbon) by pyrolysis method under inert gas at high temperature above 1,000 °C. Inorganic polymer fibers with a carbon content of more than 90%.

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Application Of Carbon Fiber Composite Materials In Three Fields

Cnc Machining
It has the advantages of light weight and high strength, chemical corrosion resistance, friction resistance, good toughness and high temperature resistance. % and 29%. , In this article, the editor will tell you about the application of carbon fiber composite materials in these three fields.
 
Field: It is the most traditional application market, and carbon fiber was first used in this area when it was first developed. Carbon fiber composite materials used in aircraft can generally be divided into two categories. One is C/C composite materials, which are used in structural materials that are resistant to burning and high temperature, such as aircraft wingtips. Even if the temperature reaches 1000 degrees Celsius, it will not It will melt; the second is carbon fiber reinforced resin matrix composite materials, which are used to make hatches, pressure vessels, etc.
 
Sports and leisure: surfboards, golf clubs, tennis rackets, ice hockey sticks, fishing rods, kite poles, and even ergonomic sneakers can use carbon fiber materials. Carbon fiber sports goods, light weight, easy to use, good fatigue resistance, so that it will not deform after working for a long time, and will not deform when pulled or impacted by external forces.
 
Industrial Applications: Its applications in this area are industrial parts, automobiles, hull components. Let’s talk about carbon fiber auto parts. Carbon fiber can be used in the rearview mirror, interior trim, license plate frame and rear wing of the car. The density is smaller than that of aluminum, so that the resistance of the car is small, and the strength is 5 times higher than that of steel to ensure the safety of passengers.
 
In the field of biomedicine, carbon fiber is often used to make artificial limbs, artificial ligaments, and medical bed boards; in the military field, carbon fiber can be used in submarines, armored vehicles, special forces helmets, and missiles; in musical instrument audio, it can also be processed into violins, Bowstrings, guitars, etc. It is believed that the application will be more extensive in the future.

ISO 9001 certified. BE-CU Prototype Offering CNC machining carbon fiber and other manufacturing services for carbon fiber marterial. Various capabilities include notching, labeling, drilling carbon fiber, grinding, laser cutting carbon fiber, finishing, plating, marking, CNC milling carbon fiber and turning carbon fiber.We stock high quality 3k carbon fiber sheet in a variety of thickness, types and finish. Its a great material used in applications where light weight and strength are needed such as drones. Unlike other workshops, we have no min order and are often filling orders with a single part. We also don’t make you pay for the full sheet and you only get charged for what is used. With a large selection of material, you should find everything you need to make your project come to life. We are also able to handle larger production runs and provide a competitive pricing. If we don’t have the material or finish you require, we are more the willing to look at bringing it in for you.

What Is Carbon Fiber?Carbon fiber is made of polyacrylonitrile (PAN) (or pitch, viscose) and other organic fibers by carbonization (removal of most elements except carbon) by pyrolysis method under inert gas at high temperature above 1,000 °C. Inorganic polymer fibers with a carbon content of more than 90%.

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CNC Machine Tool Factory

Cnc Machining

The rotary transformer of CNC machine tool factory is a common angular displacement measuring device on CNC machine tools. It has the characteristics of simple structure, sensitive action, reliable T operation, low requirements for environmental conditions, large amplitude of input H signal and strong anti-interference ability. Signal processing is more complicated, and resolvers are widely used in semi-closed-loop controlled CNC machine tools.
According to the functional relationship between output voltage and rotor angle, resolvers can be divided into the following j basic types:
① sine and cosine resolver. The excitation of single-phase AC power supply is applied externally on the primary side, and the two output voltages of =ik r are related to the sine and cosine functions of the rotor angle respectively.
② Linear resolver. In a certain working angle range gate, the output voltage and the angle of rotation are linear functions.
③ Proportional resolver. It is similar to the sine and cosine resolver, with the addition of a device for adjusting and locking the rotor position in structure. In the system as a proportional component to adjust the voltage.
The structure of the rotary transformer in the CNC machine tool factory
The rotary transformer of the CNC machine tool factory consists of two parts, the stator and the rotor, as shown in Figure 4-16. Two distributed windings whose axes are perpendicular to each other in space, that is, two-pole two-phase windings, are embedded in the fixed and rotated iron core slots, respectively. CNC Machine Tool Factory S, S. and S: S. They are identical in structure for the purpose of setting the windings. R, wind and R, R are rotor windings, and their structures are exactly the same. The stator winding is the primary side of the transformer, the rotor is the secondary side of the transformer, the excitation voltage is connected to the primary side, and the frequency is usually /iOOHz, oOOHz, 1000Hz and 5000Hz. The mutual inductance between the stator and rotor windings of the CNC machine tool factory changes according to the sine and cosine laws of the rotor deflection angle. One signal changes in proportion to the sine of the rotor angle, and the other signal changes in proportion to the cosine of the rotor angle. The stator winding lead wire Directly to the terminal block, while the rotor windings are connected to the terminal block through slip rings and brushes.
The two-pole resolver commonly used in CNC machine tool factories has a pair of magnetic poles for the stator and rotor. In addition to this, there is a multi-pole resolver.

At Be-cu.com,we use advanced equipment to offer you Unparalleled precision for producing metal and plastic machining parts

  • We combine the latest CNC milling and turning processes with proprietary technology to deliver high quality, on-demand parts.
  • Our team of engineers and machinists program the equipment to optimize cutting time, surface finish, and final tolerance to meet your design specifications
  • We specialize in cnc precision machining, single part prototyping, short to medium production runs, manufacture parts on time, every time, so you can stay ahead of schedule
  • CNC machining can create very similar parts to series parts. It is often more efficient and faster than other rapid prototyping technologies for the manufacture of a quantity of prototypes between 1 and 10 parts . We also recommend CNC machining for parts with large sizes (greater than 600 mm).

Measures To Improve Wear Resistance Of CNC Machine Tool Guide Rails

Cnc Machining
The basic idea of ​​improving wear resistance from the design point of view; strive for no wear as much as possible; when wear is unavoidable, try to strive for less wear, uniform wear and compensation after wear, so as to improve the service life.
 

1. Strive for no wear

 
The reason for wear is that the mating is in direct contact and relative movement under a certain pressure. Therefore, the condition for no wear is that the mating surfaces are not in direct contact during relative movement, and there is no relative movement when they are in contact.
One of the ways that the mating surfaces are not in direct contact during relative motion is to ensure complete liquid lubrication, so that the lubricant completely separates the friction surfaces. Such as hydrostatic guide rails, hydrostatic bearings or other hydrostatic pairs. The dynamic pressure guide rail and the dynamic pressure bearing can also achieve a complete liquid lubrication state, but the greasy pressure is related to the relative movement speed. Therefore, wear is still inevitable during starting or stopping.
 

2. strive for less wear

 
No wear and tear can only be achieved in a few and special cases, and in most cases, we can only strive for less wear and tear to extend the working period.
 
1) Heat Treatment of Correctly Selecting Materials of Friction Pairs
Appropriate selection of the material and heat treatment of the friction pair can improve the ability to resist wear, such as hardening of the supporting rails, soft plastic tapes on the surface of the moving rails, etc.
 
2) reduce pressure
 
The pressure can be reduced by increasing the contact surface of the guide rail and reducing the load. Improving the straightness of the guide rail surface and refining the surface roughness can increase the reputation. Extending the length of the moving guide rail with the cold wind guide rail surface can also increase the contact area, but it must be adapted to the rigidity of the moving guide rail, otherwise the deformation will be large after being loaded, the contact will be uneven, and the local pressure will increase, although the area will increase. , but it didn’t work. The use of unloading guide rails is a good way to reduce the load on the guide rails and reduce the pressure.
 
3) change friction properties
 
Replacing the sliding pair with a rolling pair can reduce wear. Ensuring sufficient lubrication in the sliding friction pair avoids dry or semi-dry friction and also reduces wear.
4) Strengthen protection
In order to prevent dust, cutting, grinding wheel chips, etc. from entering the friction pair, strengthening protection is an effective measure to improve the wear resistance of the guide rail.
 

3. Strive for even wear

 
Whether the wear is uniform or not has a great influence on the working life of the components. There are two main reasons for uneven wear.
(1) The pressure distribution on the friction surface is uneven.
(2) Each section has different access opportunities.
 
There are the following measures to strive for uniform wear.
 
(1) Strive to make the pressure on the friction surface evenly distributed, for example, the shape and size of the guide rail should make the concentrated load as symmetrical as possible.
(2) Minimize torsional and overturning moments.
(3) Ensure that the supporting parts such as the workbench and the slide have sufficient rigidity.
(4) The hardness of the friction pair with uneven use opportunities over the entire length should be higher. For example, the hardness of the guide rail of the lathe bed should be higher than that of the saddle guide rail.
 

4. After wear, it should be able to compensate for the amount of wear

 
The gap becomes larger after wear, and the design should consider that the gap can be compensated for in structure. The compensation method can be automatic continuous compensation or periodic manual compensation. Automatic continuous compensation can rely on its own weight, such as a triangular guide. Regular manual compensation, such as rectangular and dovetail guide rails by adjusting the inserts, closed guide rails also need to adjust the pressure plate.
 

 

At Be-cu.com,we use advanced equipment to offer you Unparalleled precision for producing metal and plastic machining parts

  • We combine the latest CNC milling and turning processes with proprietary technology to deliver high quality, on-demand parts.
  • Our team of engineers and machinists program the equipment to optimize cutting time, surface finish, and final tolerance to meet your design specifications
  • We specialize in cnc precision machining, single part prototyping, short to medium production runs, manufacture parts on time, every time, so you can stay ahead of schedule
  • CNC machining can create very similar parts to series parts. It is often more efficient and faster than other rapid prototyping technologies for the manufacture of a quantity of prototypes between 1 and 10 parts . We also recommend CNC machining for parts with large sizes (greater than 600 mm).

Typical Thread Turning Tools And Sharpening For Pipe Thread Lathes

Cnc Machining

Since the thread turning tool belongs to the forming turning tool, in order to ensure the accuracy of the thread, the thread turning tool must be properly sharpened and clamped.

1.Sharpening of thread turning tools

Sharpening thread turning tools can also be divided into rough grinding, fine grinding and sharpening with a grinding stone. The sharpening steps of the pipe thread lathe are generally: first grind the front side parallel to the bottom surface of the cutter body, sharpen the radial rake angle and chip groove when necessary, and then sharpen the left rear and right rear respectively, in order to ensure the half angle of the tooth shape. At the same time, according to the direction and size of the helix angle, sharpen the rear corners on both sides, and sharpen the arc of the tool tip after detecting the corner of the tool. Finally, use a grindstone to grind all parts of the cutting edge.
The sharpening requirements for thread turning tools are:

1) 5 is allowed for the thread rough turning tool. – IO. The radial rake angle of the finishing tool should generally be equal to oo.

2) At radial rake angle 7,=O. When , the tool nose angle of the turning tool must be equal to the tooth profile angle of the thread, that is, q=d. When the radial rake angle is 7,) 04, it should be sharpened according to the calculated corrected tool nose angle.

3) – Under normal circumstances, the edges on both sides of the thread turning tool should be in a straight state, only when the normal cutting or radial rake angle is used, , > 0. , When turning a thread with high precision, the straight cutting edge is corrected to a convex curve.

4) The static relief angle of the two sides of the turning tool of the pipe thread lathe should be offset with the direction and size of the thread lift angle, so that the relief angle in the feeding direction increases by one thread lift angle, and the relief angle in the opposite direction decreases by one thread angle of rise.

5) The bisector of the inner thread turning tool of the pipe thread lathe should be perpendicular to the shank, and the cutting edge should also be ground with a double relief angle. The width from the tool tip to the rear side of the tool shank should be smaller than the small diameter of the thread to facilitate tool retraction.

6) When sharpening the thread turning tool on the pipe thread lathe, the force should be light and steady. Sharpening high-speed steel turning tools should be immersed in water for cooling in time to prevent overheating of the tool tip;

2.Typical thread turning tool

(1) Triangular thread turning tools can generally be divided into rough turning tools, fine turning tools, and high-speed steel and carbide turning tools.

1) High speed steel triangular external thread turning tool. The pipe thread lathe has sharp cutting edges, good toughness, and can withstand larger impacts and obtain lower surface roughness values. But it has poor heat resistance, so it is often used for low-speed cutting or thread finishing.
For smooth cutting, y = 15 should be selected when rough turning the thread of plastic material. The radial rake angle should not be too large to prevent the phenomenon of “knife sticking”.
When turning the thread of brittle material or fine turning plastic material, 7r=o should be selected. the radial rake angle. The angle between the two edges should be equal to the profile angle.

2) Carbide triangular thread turning tool. It has the characteristics of high hardness, good Td grinding and high temperature resistance. However, the impact resistance is poor. When turning a thread with a larger pitch or a higher material hardness, a width of 0.2 to 0.4 mm.y is often ground on the two main cutting edges. ． is -5. The negative chamfer c is due to the extrusion phenomenon when cutting the thread at high speed, which makes the actual tooth angle swell. Therefore, when sharpening the sharp corner of the knife, the tooth angle of the knife is reduced by about 0.50.

The cross-sectional area of ​​the shank should be increased as much as possible for the internal thread turning tool to ensure the space for retracting the tool, and the length of the stalk should be as short as possible. At the same time, the cutting edge should be clean and sharp to make up for the lack of rigidity and strength of the arbor.

(2) Trapezoidal thread turning tools When turning trapezoidal threads, due to the large radial cutting force, rough turning tools and fine turning tools are generally used for roughing and finishing respectively. The tool material is also selected according to the processing properties. High-speed steel or hard Made of alloy.

The head width w of the rough turning tool should generally be equal to – or slightly smaller than the width of the groove bottom of the thread.

Typical trapezoidal thread finishing tool. In order to ensure the profile accuracy of the trapezoidal thread on the pipe thread lathe, the radial rake angle of the cutting edge is n: . . , parallel to the base plane P, and the 7J sharp angle of the two cutting edges is strictly equal to the profile angle. In order to improve the surface quality of the tooth profile and make the cutting smooth, the two cutting edges of the turning tool are ground with different rake angle chip grooves according to the direction and size of the thread rise angle.

 

At Be-cu.com,we use advanced equipment to offer you Unparalleled precision for producing metal and plastic machining parts

  • We combine the latest Cnc milling and turning processes with proprietary technology to deliver high quality, on-demand parts.
  • Our team of engineers and machinists program the equipment to optimize cutting time, surface finish, and final tolerance to meet your design specifications
  • We specialize in cnc precision machining, single part prototyping, short to medium production runs, manufacture parts on time, every time, so you can stay ahead of schedule
  • CNC machining can create very similar parts to series parts. It is often more efficient and faster than other rapid prototyping technologies for the manufacture of a quantity of prototypes between 1 and 10 parts . We also recommend CNC machining for parts with large sizes (greater than 600 mm).

Ball Circulation Method Of Rolling Screw Nut Pair Of Shenyang Machine Tool

Cnc Machining

After the structure of the ball screw nut pair of Shenyang machine tools and the ball circulation process, it leaves the screw thread raceway and returns to the screw through the spiral groove and cannula on the outer surface of the nut to re-enter the circulation.

The outer circle of the nut is equipped with a helical intubation port, and the two ends of the pipe are inserted into the holes at both ends of the ball nut to search for the multi-circle circulating chain of the balls formed by the intubation of the balls.

This type of Shenyang machine tool ball screw nut pair has a simple structure, good manufacturability, and high bearing capacity, but the radial size is large, and the wear resistance and impact resistance of both ends of the elbow are poor. It is currently the most widely used and can be used in heavy-duty transmission systems. Slotting on the surface of the nut is connected to the tangential hole, and installing two balls in the threaded raceway instead of the elbow, it is a spiral groove type external circulation.

In this way, the radial size of the nut is small, but the difference between the groove and the hole. The interface is a non-smooth connection, and it is easy to generate impact when the ball passes through.

The recirculating balls remain in contact with the screw surface during the cycle. It connects the adjacent raceways by the reverser installed on the nut, so that the balls circulate in a single circle. The number of reversers 2 is equal to the number of ball turns.

The advantages of the internal circulation method are that the loop of the ball circulation is short, the structure is compact, the rigidity is good, the ball circulation is good, and the efficiency is high, but the manufacturing precision is high and the manufacturing is difficult. It is mainly used for high-sensitivity and high-precision feed systems, and it is not suitable for heavy-duty transmission.

Pre-tightening method of ball screw nut pair of Shenyang machine tool

The transmission clearance of the ball screw is the axial clearance, and its value refers to the maximum axial movement between the screw and the nut when there is no relative rotation between the two. In addition to the clearance of the structure itself, it also includes the application of axial load. The amount of movement of the shaft caused by the elastic deformation afterward.

The existence of the axial gap causes backlash error when the lead screw rotates in the reverse direction, which affects the transmission accuracy and axial grace. In order to reduce the axial clearance caused by elastic deformation, the method of preloading (preloading) is usually used.

The basic principle of the preloading of the ball screw nut pair is to make the two nuts produce axial displacement to apply the preloading force and cut the gap between them. However, excessive preload will increase frictional resistance, reduce transmission efficiency and shorten service life. Therefore, it generally needs to be adjusted several times to ensure that the gap is eliminated and the operation is flexible. 

At Be-cu.com,we use advanced equipment to offer you Unparalleled precision for producing metal and plastic machining parts

  • We combine the latest Cnc milling and turning processes with proprietary technology to deliver high quality, on-demand parts.
  • Our team of engineers and machinists program the equipment to optimize cutting time, surface finish, and final tolerance to meet your design specifications
  • We specialize in cnc precision machining, single part prototyping, short to medium production runs, manufacture parts on time, every time, so you can stay ahead of schedule
  • CNC machining can create very similar parts to series parts. It is often more efficient and faster than other rapid prototyping technologies for the manufacture of a quantity of prototypes between 1 and 10 parts . We also recommend CNC machining for parts with large sizes (greater than 600 mm).

Analysis of the corrosion resistance of carbon fiber composites

Cnc Machining
As an excellent structural material, carbon fiber has been used in many fields. In addition to the excellent properties of light weight and high strength, the corrosion resistance of carbon fiber composite materials is also more prominent than other structural materials. What makes carbon fiber have excellent performance? What about corrosion resistance? Let’s find out together.
It can be seen from the production process of carbon fiber that carbon fiber is a structure similar to graphite crystal formed by high temperature carbonization and graphitization at 2000-3000 °C. This structure itself has high resistance to medium corrosion. In some chemical media , its strength and modulus remain basically unchanged. However, in practical applications, carbon fiber is usually fused with matrix materials such as resin to form carbon fiber composite materials, so the corrosion resistance of carbon fiber products will be different from that of carbon fiber itself.
In different environments, carbon fiber products also have different corrosion resistance performance, because the comprehensive effect of ultraviolet rays, oxygen and moisture in the aging effect of the environment on epoxy resin composites is stronger than the unilateral effect, and the aging process Generally, it starts from the surface, and then gradually develops to the inside. With the development of carbon fiber composite product application technology, in many working scenarios with harsh environments, the good corrosion resistance of carbon fiber composite materials has won more and more application opportunities.
China Be-cu Prototype Material Technology Co., Ltd. is a professional manufacturer of carbon fiber products. The company has advanced fiber-reinforced composite material sheet, pipe, molding, autoclave, Cnc machining and other production lines. It has rich production experience and insists on bringing customers High quality carbon fiber products.

ISO 9001 certified. BE-CU Prototype Offering CNC machining carbon fiber and other manufacturing services for carbon fiber marterial. Various capabilities include notching, labeling, drilling carbon fiber, grinding, laser cutting carbon fiber, finishing, plating, marking, CNC milling carbon fiber and turning carbon fiber.We stock high quality 3k carbon fiber sheet in a variety of thickness, types and finish. Its a great material used in applications where light weight and strength are needed such as drones. Unlike other workshops, we have no min order and are often filling orders with a single part. We also don’t make you pay for the full sheet and you only get charged for what is used. With a large selection of material, you should find everything you need to make your project come to life. We are also able to handle larger production runs and provide a competitive pricing. If we don’t have the material or finish you require, we are more the willing to look at bringing it in for you.

What Is Carbon Fiber?Carbon fiber is made of polyacrylonitrile (PAN) (or pitch, viscose) and other organic fibers by carbonization (removal of most elements except carbon) by pyrolysis method under inert gas at high temperature above 1,000 °C. Inorganic polymer fibers with a carbon content of more than 90%.

Spindle Components Of CNC Machining Centers

Cnc Machining

The role and function of the spindle The spindle component is one of the execution components of the forming movement of the machining center, and the spindle component of the machining center is required to have high running accuracy, long-term accuracy retention and long-term accuracy stability.

The machining center is usually used as a precision machine tool, and the running accuracy of the spindle components determines the machining accuracy of the machine tool. There are generally two methods for evaluating the running accuracy of machine tools: dynamic inspection and static inspection. Static inspection refers to the inspection of the runout of each positioning surface and working surface of the main shaft components under the condition of low speed or dynamic rotation of the main shaft. The dynamic inspection needs to use a certain instrument under the rated speed of the machine tool main shaft, and use a non-contact detection method to test the rotation accuracy of the main shaft.
 
Since the machining center usually has the function of automatic tool change, the tool is fastened by the tensioning mechanism installed inside the spindle of the machining center through the special tool holder, so the rotation accuracy of the spindle should consider the error caused by the machining error of the positioning surface of the tool holder. Machining center spindle bearings usually use C-class bearings. In the two-support spindle components, 41 and 22 are mostly used in combination, that is, four radial thrust bearings and one radial ball bearing are used for the front support and the rear support respectively. The supports use two radial thrust bearings to form the support system of the main shaft components. For light-duty high-precision machining centers, there is also a support system in which a radial thrust bearing is used for the front and rear supports to form the spindle components. This structure is suitable for high-precision and high-speed spindle components. The spindle accuracy is lost due to assembly errors and heat conduction, but the bearing capacity of the spindle will be greatly reduced.
 
When ordering the spindle bearings, you can choose single use order or paired use order. Paired use When ordering, the supplier will match the inner and outer rings of the paired bearings so that they have the specified axial interference after preloading on the main shaft. The optimal installation position of the paired bearings in the circumferential direction of the main shaft will also be marked by the supplier to meet the working performance requirements after the main shaft is installed.
 

 

At Be-cu.com,we use advanced equipment to offer you Unparalleled precision for producing metal and plastic machining parts

  • We combine the latest CNC milling and turning processes with proprietary technology to deliver high quality, on-demand parts.
  • Our team of engineers and machinists program the equipment to optimize cutting time, surface finish, and final tolerance to meet your design specifications
  • We specialize in cnc precision machining, single part prototyping, short to medium production runs, manufacture parts on time, every time, so you can stay ahead of schedule
  • CNC machining can create very similar parts to series parts. It is often more efficient and faster than other rapid prototyping technologies for the manufacture of a quantity of prototypes between 1 and 10 parts . We also recommend CNC machining for parts with large sizes (greater than 600 mm).