Electronic Stampings Parts

The surface and intrinsic properties of electronic stamping materials have a great influence on the quality of stamped products. The thickness of stamping material is required to be precise and uniform; the surface is smooth, no spots, no flaws, no scratches, no surface cracks, etc.; Uniform yield strength, no obvious directionality; high uniform elongation; low yield ratio; low work hardening.

Deep drawing engineering drawing

Design for deep drawing Sheet metal stamping deep drawing metal stamping manufacturing technology is defined as the stretching of sheet metal stock, commonly referred to as a blank, around a plug. ...

Drawing parts processing standards and process precautions

1. Processing standard of drawing parts

Stretching parts are workpieces obtained by stretching and deforming the sheet by mechanical equipment. Now Xiaobian will introduce the production standards of our stretching parts for you.

1. The first-wall surface, bottom surface and wall surface of the deep-drawing part, and the corner radius of the four corners of the rectangular part should be appropriate. mm2rd1, mm5.1r2d.

2. The shape of the stretched part should be simple and symmetrical, and it should be stretched at one time as much as possible.

3. For parts that need to be stretched many times, on the premise of ensuring the required surface quality, traces that may be produced on the inner and outer surfaces should be allowed.

4. On the premise of ensuring the assembly requirements, the side wall of the deep drawing part should be allowed to have a certain slope.

5. The dimensions of the deep-drawn parts should be marked with their outer or inner dimensions, and the inner and outer dimensions should not be marked at the same time. With trapezoidal deep-drawing parts, the dimension in the height direction should generally be based on the bottom. If the upper part is the benchmark, the height dimension is not easy to guarantee.

6. The distance from the hole on the bottom or flange of the deep drawing piece to the side wall should be appropriate.

2. Precautions when using tensile parts

As we all know, tensile parts are prone to residual stress during machining, and there is a high residual stress near the yield limit. Most residual stresses have significant adverse effects on components, such as reducing their actual strength, fatigue limit, stress corrosion and brittle fracture. Due to the relaxation of residual stress, the parts are warped, which greatly affects the dimensional accuracy of the parts. So, what should we pay attention to when working with extruded parts? Let our stretched parts manufacturers explain it to you.

1. Regularly check the turntable and die mounting seat of the punch press to ensure the coaxial accuracy of the upper and lower turntables.

2. Before using stretch metal stamping parts, it is necessary to strictly inspect, clean up dirt, and carefully check that the guide sleeve and mold of stretch stamping parts are well lubricated.

3. In order to ensure the service life of the drawing and punching parts, the die spring should be replaced regularly to prevent the spring from fatigue damage and affect the use of the drawing and punching parts.

4. When installing the mold, the puncher should use softer metals (such as copper, aluminum, etc.) to make operating tools to prevent damage to the drawing punch during the installation process.

5. When the punch and die edge of the pulling and pressing part are worn, they should be stopped immediately and ground in time, otherwise the wear degree of the die edge will be rapidly expanded, the die wear will be accelerated, and the quality of the stamping parts and the life of the die will be reduced.

6. According to the installation procedure of the mold, install the convex and concave mold on the turntable to ensure that the direction of the convex and concave stretched stamping parts is consistent, especially the direction requirements (non-circular and square), to prevent installation errors and reverse installation.

3. Precautions and uses for the processing process of drawing parts

Have you ever wanted to ask how much you know about the accessory product of tensile parts? I am afraid that few people know what this accessory is used for and how it is processed. This kind of drawing part is a shaped slab or hollow part drawn to make various open stamping parts. This kind of workpiece often appears in our daily life, but we have not really understood the purpose and function of the product. Next, we will introduce you to the production process considerations and performance aspects of stretched parts.

Due to the special production process of wire drawing, this production method can be made into thin-walled parts with complex shapes such as cylinder, box and spherical. Rally has its unique production method in tractors, electrical appliances, electronics and other industrial and daily necessities, so it has a considerable position. If the drawing parts are used as installation and processing items, if there is any missing or missing, it will cause the valve to lose control and damage the piston and other workpieces, and if it is used in the case of missing installation, it will cause serious failure, which is also a detail to pay attention to. question.

Unturned tire casings stacked for a long time will be deformed by squeezing. If a squeeze condition occurs, the filtering effect is not reliable. Therefore, we need to pay attention to all aspects of our workflow and daily routines so that the stretched products we produce are fully functional.

The above is the processing standard and process description of drawing parts. Everyone should know about it. Therefore, the manufacturer of tensile parts reminds you that only the correct treatment of tensile products can play an important role in its performance. In addition, the service life is also highly ductile. I hope the above will be helpful to readers.

What problems should be paid attention to in the production process of metal stamping parts?

1. Precautions for the figure of metal stamping parts

1. Wrinkles on the side walls of the parts: The main reasons for the wrinkles on the side walls of the parts are insufficient material thickness (thinner than the minimum allowable thickness) or eccentricity when installing the upper and lower molds, resulting in a large gap on one side and a small gap on the other side. Precautions are to replace the material immediately and readjust the mold.

2. Scratches on stamping parts: The main reason for scratches on parts is that there are sharp scars on the mold or metal dust falls into the mold. The preventive measures are to grind the scars on the mold and clean the metal dust.

How to solve the stamping problem of electric vehicle stamping parts

The die set can be dismantled in time to check the abnormal cause of imprinting. It is verified from the consistency of the lower plane of the ejector pin and the die, and the rigidity of the lower backing plate and the lower bottom plate. It is found that the cause of the imprinting on the surface of the part is the concave The height of the mold and the push block is inconsistent. The source is that the backing plate has no hardness, and it sags after mass production, resulting in imprinting problems.

The imprint on the stamping part is caused by the protruding part of the part of the stamping die that should not be raised, and the raised part should be ground or replaced.

First of all, find the cause and location of the imprinting, and then blow the iron filings away with the blowing nozzle in the place where iron filings are likely to be generated, and check whether the mold blade is unhappy and causes too much iron filings. In addition, check it frequently during operation. , to see if there is an embossing.

The main reason for this anomaly is that the die set did not heat the die pad, and it was handed over to the responsible department for rectification. After rectification, the bottom-cutting problem solved the root cause of the imprinting problem.

What are the five use skills of laser cutting technology?

1. Five skills of sheet metal processing

1. The dual-focus laser cutting head is a wearing part on the laser cutting machine, which will be damaged after long-term use.

2. Check the straightness of the laser cutting machine track and the verticality of the machine every six months. If any abnormality is found, repair and debug it in time. Vacuum the dust and dirt from the machine once a week. All electrical cabinets should be tightly closed to prevent dust.

3. Always check the steel belt of the laser cutting machine to make sure it is tight. Otherwise, someone could be injured or even killed if the operation goes wrong. The steel belt may seem like a trivial matter, but if there is a problem, it is still a bit serious.

4. One thing that needs to be reminded in sheet metal processing is that each guide rail of the laser cutting machine should be cleaned regularly to eliminate dust and other debris, and the frame should be regularly wiped and lubricated to ensure that the lubrication is free of debris.

5. The guide rail should be cleaned and lubricated frequently, and the motor should also be cleaned and lubricated frequently, so that the machine moves better during the traveling process, the cutting is more accurate, and the quality of the cut products will also be improved.

Key Points for Use of Continuous Stamping Die

The manufacturers of precision stamping parts choose to use the continuous stamping die when stamping, which has the advantages of high mass production efficiency, easy to realize automation, and low cost. At the same time, we should not forget the key points of using the continuous stamping die to avoid affecting the quality of stamping products and the service life of the stamping die.1. The metal stamping parts need to be suitable for continuous die stamping. First, the batch size should be large enough, the feeding accuracy and the cumulative error between each work step should be designed reasonably, and the accuracy of the parts should not be reduced. The parts with complex shape and difficult to locate after punching are usually stamped with continuous die, which is ideal for z;

2. The press used for the continuous die should have sufficient strength, stiffness, accuracy and other factors, and the stroke should not be too large to ensure that the guidance system does not disengage during operation, generally working at less than 80% of the nominal pressure;

4. Stamping materials should have good mechanical properties. Each batch of incoming materials should be inspected and tested according to the regulations. Only when the materials are straight can they be put into production. The quality of materials directly affects the production of metal stamping parts;

3. Key points of design, manufacture and maintenance of continuous die for metal stamping parts. Due to the complex structure of the continuous die, its manufacturing accuracy is higher than that of general dies. After each batch of production, inspection and maintenance are required. Only qualified parts can be put into the die warehouse. Some small accessories and inserts need to be replaced in time after wear; If the mold has been ground, the corresponding other parts should also be ground equally to ensure the same height, which is required to be consistent with the relative difference of the original design. Therefore, the level of the mold workers and special equipment should also be equipped.

Notes on Stamping Die Assembly

First, the upper and lower die bases of the stamping die are installed. The upper mold base is mounted on the punch or press, and the lower mold base is mounted on the working surface of the punch or press. After the upper and lower mold bases are fixed, the mold parts can be mounted on the mold base to ensure the correct and accurate installation position, so as to avoid errors and the mold can not work normally. When installing the concave-convex mold, a uniform blanking gap is required to ensure the quality of the stamping and extend the service life of the stamping die. The assembly sequence of the upper and lower moulds should be determined according to the mould structure. Different installation methods are determined for mold installation with and without guide columns. For complex Stamping Mould installations, a reasonable assembly sequence is determined based on the size of the upper and lower mold parts. Sometimes the improper installation sequence not only affects the subsequent installation work, but also may not be installed, so the correct installation sequence is essential.

Stamping Die Components

Stamping die is usually composed of fixed die and movable die. The fastener is fixed to the press table with a clamping plate and screw, which is called the lower die. The movable part is fixed to the sliding block of the punch, i.e. the upper die. Then the upper die moves up and down with the sliding block for stamping.
Different components can be divided into 5 categories according to their functions:
1. Working parts: Working die parts are used for stamping, which can directly deform and separate sheet metal parts to obtain stamping parts. Such as punch blade, die blade, punch matrix, etc.
2. Test piece: The function of the pilot element is to control the feed direction and feed pitch of raw materials, and to ensure the correct position of the raw material plate of the die. Such as pins, positioning pins, guide pins, pin pins, pin plates, side clamping plates, etc.
3. Pressing, stripping and lifting parts: These stamping die parts are designed to ensure that stamping parts and waste materials can be discharged from the die after each stamping, so that the next production can proceed smoothly. For example: stripper, revamp, waste blade, etc.
4. Guide Components: These stamping die components are used to ensure the correct direction of the upper and lower dies in the relative movement process, so that the punch and female die inserts have a uniform gap, thus improving the quality of stamping parts.
5. Installation of fastening components: The function of these progressive die components is to connect the above four types of stamping die components together to ensure that the relative position of each die component is correct and that the die can be installed on the punch. .
Of course, this is not to say that each stamping die should have more than 5 die components. Once the stamping die is used for prototype or small batch production, to shorten the validation time and save cost, sometimes it could simplify the stamping die structure, which only has working components, stripping components and several fastened components. But for high volume mass production tools, except for the above 5 types of die components, there will be additional automatic feeding and ejection devices added to the stamping die, which can ensure the quality of the stamping part and increase the production efficiency rate and tool life time.

What are the points of attention for the design of precision drawing molds during the processing and production of drawing parts?

First, the shortcomings of the current upward continuous stretching die.

1. The thickness of the template is not uniform. The key to the stretching die is the stripping plate, which should be thickened and the splint should be appropriately thinned.

2. The guide gap of the drawing die is large, the die and the guide post, especially the stripper plate and the guide post, the gap between the punch and the guide post is large, and the precision of the guide post is poor.

3. The choice of the spring is not very reasonable. The key to the stretching die is the blank holder, and it is necessary to ensure that the stretching cannot be wrinkled.

2. What should be paid attention to when the continuous stretching die is stretched upward?

1. Thickness of the template: Because the upper mold needs to be equipped with a spring or a nitrogen gas spring, the upper cover plate is 25mm thick as far as possible, and the upper foot is determined according to the height of the stretched product and the cover degree of the spring required.

2. Upward stretching is actually a very critical point. It is a product orientation problem, especially for products with high stretching. It is easy to deform during the stretching process. If the product is crooked, it is difficult to guide. Then every step of stretching The question of orientation is the key.

3. Clearance: stretch upward, the inner guide should be neutral as far as possible, fixed on the stripper plate, which is conducive to disassembly. Colleagues use ball guide posts, which rely on the rotation of the ball to slide, so that the guiding accuracy can be guaranteed.

4. Selection of springs: D. A group of trimming generally chooses springs that can be stripped. At the beginning, the upper springs need to bear the stretching effect, so nitrogen gas springs are required. According to the product material and the size of the material, the thickness of the material must be Choose different tonnages, try not to choose large ones, because the blanking plate needs to arrange at least 4 springs. Not only that, but also different colors of springs need to be selected according to the thickness of the material and the diameter of the material. The subsequent stretching is based on a principle that the lower spring is smaller than the upper spring, and the lower spring can be stripped.

The continuous mold production process adopted by Baifudu Electromechanical Stamping, multiple processes are completed in the same mold, and the one-time molding of the product is realized. The precision of the finished product is higher and the quality is more stable. It can produce various stainless steel tensile parts, Drawing shells, stamping deep drawing parts, metal deep drawing parts, shell drawing parts, etc., what are the points to pay attention to in the design of precision drawing molds during the processing and production of drawing parts. The relevant content is as above, I hope it can help you.

What are the technical requirements for the custom processing of hardware chassis shells?

Not only that, but the chassis also needs to be resistant to vibration. Stamping resistance, corrosion resistance, dust-proof, waterproof, radiation-proof and other properties ensure the stable and reliable operation of the equipment.

2. With excellent performance and safety protection facilities, it is easy to operate, install and maintain, and ensure the safety of operators.

3. Strain in production, assembly, debugging and packaging and transportation.

4. It should meet the requirements of standardization, normalization and serialization.

5. Beautiful appearance. Applicable, color coordinated.

In the current era, the chassis has become an indispensable hardware product in the computer industry. Various styles of cabinets can be seen in major computer rooms. With the continuous development of today’s computer industry, the functions embodied by the cabinets are also getting bigger. Cabinets are generally used in network wiring rooms, floor wiring rooms, central computer rooms, data computer rooms, network cabinets, control centers, monitoring rooms, monitoring centers, etc.

2. What are the types of chassis shell materials?

The following Zhejiang Baifudu Electromechanical editor mainly introduces the common computer case materials for you. Let’s take a look!

1. Acrylic side through case

The transparency of the acrylic sheet is excellent, and the light transmittance of the colorless and transparent plexiglass sheet can reach 92%. In addition, the acrylic sheet also has flow weather resistance and strong adaptability to the natural environment. Long-term sunshine, wind and rain will not make it change. The acrylic side lens can see the use of the hardware inside the case. If the accessories inside the case have lighting effects, the color that comes out will be a different feeling.

2. Sound absorption and noise reduction chassis

The so-called active noise reduction is no longer blindly increasing the thickness of the board to passively and inefficiently block the noise, but adding high-density suction cotton to actively absorb the noise, eliminating a large part of the noise before it is transmitted to the chassis board, thereby enhancing the noise reduction effect. The material of the sound-absorbing cotton not only has a good sound-absorbing effect, but also has good heat dissipation. With several large-sized silent fans, it really kills two birds with one stone.

3. Glass side transparent case

Different from ordinary glass, tempered glass is generally used in the glass side see-through case, which forms compressive stress on the glass surface. When the glass is subjected to external force, it first offsets the surface stress, thereby improving the bearing capacity. Compared with ordinary acrylic and plastic side panels, the side panels made of tempered glass have stronger light transmittance, so after building a light pollution platform, the visual effect of tempered glass chassis is better, and the abrasion resistance of tempered glass is better. It should also be stronger than acrylic. After a period of use, it will not be scratched like acrylic, which will affect the appearance. In addition, due to the large weight of the tempered glass, it can effectively stabilize the body and prevent the chassis from resonating. Therefore, tempered glass is more and more popular with chassis manufacturers and DIY players.

4. Aluminum chassis

Aluminum chassis often have the characteristics of excellent heat dissipation, electromagnetic shielding, and light material. The chassis of this material is very textured whether you look at it or touch it, but the price of aluminum chassis is very expensive, and the appearance of the chassis is very high. Changes are also less. Compared with the steel plate, the strength of the aluminum plate is lower, especially the upper plate, the side plate, and the side plate that is not installed on the chassis. If you accidentally step on it, it will leave irreparable dents.

5. Plastic case

Compared with metal materials, one advantage of plastic materials is that shaping and coloring will be very simple, which increases the look and feel of the chassis. However, the quality is also clear. The plastic material not only has low strength and cannot absorb electromagnetic radiation, but also is more prone to scratches and difficult to maintain.

6. SECC chassis

SECC is electrolytic lead galvanized steel sheet. It is a stamping material, that is, a zinc layer is plated on the surface of the cold-rolled sheet, and the surface is smooth and gray. Anti-rust and corrosion-resistant, but the price is relatively high. The general plate thickness is between 0.4~3.2mm. SECC material is more common in big brand computer case manufacturers, and the price is more expensive than hot-dip galvanized sheet. So, we can see this material in high-end gaming cases or server cases.

What are the fastening methods of mold parts?

3. Riveting method: open a groove on the punch along the outer contour, determine the groove depth according to the working conditions of the die, then put the die into the fixing plate, and finally squeeze the punch around the punch with the fixing plate material.

4. Heat sleeve method: The cooperation between the mold sleeve and the concave mold adopts a large amount of interference. When the connection of the interference fit only plays a fixed role, the amount of interference should be less, and when the connection increases the prestress, the amount of interference should be large.

5. Welding method: It is mainly used for the equipment of cemented carbide convex and concave mold. The solder is brass, and it is cooled slowly after welding.

6. Low melting point alloy method: Low melting point alloy refers to the volume expansion during condensation, and uses this characteristic to fix parts.

7. Epoxy resin bonding method: After hardening, it has strong adhesion to metals and non-metals, high connection strength, good chemical stability, small shrinkage, and simple bonding method. However, the hardness is low, and it is not resistant to high temperature, generally lower than 100 degrees.

8. Inorganic bonding method: copper oxide powder is quantitatively mixed with aluminum hydroxide phosphoric acid solution, which has high bonding strength and good wear resistance, but has poor impact ability and is not resistant to acid and alkali.

Characteristics of metal stamping parts

Metal stamping parts are widely used in life and are one of the most common metal products. Stamping parts have many characteristics. Stamping plants need to understand the characteristics of stamping parts in order to achieve better production. . Zhejiang Balford Precision Stamping – Over the past 20 years, we have been committed to the customized processing of precision stamping parts and accumulated rich experience. Next, Balford precision stamping will introduce the main features of stamping parts.

1. The materials for the production and processing of metal stamping parts mainly include cold rolled, hot rolled, stainless steel plate, copper and other metal strips.
2. The advantage of stamping parts is that they are made by stamping on the premise of low material consumption. . Stamping parts are light in weight and have good toughness. After plastic deformation of raw materials, the structure of metal components is improved, gradually increasing the compressive strength of the stamping parts produced.
3. In the whole production process of stamping parts, since the surface of the material will not be damaged, it has good surface quality, and the appearance is smooth and beautiful, which provides convenience for surface treatment such as surface spraying, electroplating process, air oxidation, etc.
4. Stamping parts have high specification accuracy. Stamping parts produced by the same die have uniform size and good interchangeability. General installation and application requirements can be met without further processing

How to deal with common problems in the processing of drawing molds?

1. In terms of the original data of the molded workpiece, after the appearance processing of the original data, such as phosphating, spraying or other appearance processing, the appearance of the molding data forms a layer of non-metallic mold, which can greatly reduce or eliminate the strain of the workpiece. . This approach is often costly and requires additional production equipment and production processes. While this method is sometimes effective, it is rarely used in actual production.

2. Adding a layer of polyvinyl chloride and other films between the metal parts and the mold, between the mold and the forming data can sometimes solve the problem of workpiece strain. For the production line to continuously supply the film through the organization, for the stamping equipment for periodic production, each production part needs to add the film, which affects the productivity. The overall cost of this method is also high and a lot of waste is generated. This method can be used for the production of small batches and large workpieces. In the case of very small forming load, sometimes lubricating oil or lubricating oil with EP additives can solve the problem of workpiece strain.

3. In terms of mold, the mold is convex. Die data or die convex. Manipulate the appearance of the die or select the appropriate die data to change the nature of the contact between the drawing data and the punch. Practice has proved that this is an economical and practical strain treatment method, and it is also a method widely used at present. To sum up, deal with deep drawing and workpiece as well as die convex. There are many ways to strain the appearance of a die. For detailed cases, the selection should be based on artifacts and negative sizes. mass production. Type of processing data, etc.

The shape of the drawing piece is complex and diverse, and the dimensional accuracy is required to be high. The processed product is on the same level as the cut product, and the processed cut surface is flat. It’s very smooth and bright. It is more difficult to machine than other crafts. It can process gear fine-blanking parts with small modulus and high precision, and the drawn parts have clear outline and small slump angle. Drawing parts mainly rely on the pressure of the press to process metal or non-metal data through the die. The workpieces processed by drawing parts have high precision and can reach the micron level. Compared with other workpieces, it has the advantages of light weight, thin thickness, uniform distribution and strong pressure resistance. In the process of processing, large-scale production, shortening processing time, one-time molding, no need for other processing. Mainly used in automobile brakes, automobiles, motorcycles and other products. It is an economical and fast electromechanical product.

Let’s popularize some questions about stretch pieces so you can gain some expertise by learning to understand them clearly.

1. Blanking – deep drawing, suitable for shallow drawing or deep drawing?

Blanking-Drawing is suitable for shallow drawn parts, because the steel plate is compressed during blanking and the steel plate is also compressed during deep drawing. Therefore, on this basis, the above-mentioned corresponding theory will appear. There is no doubt about that.

2. How to roll the thread on the stretched part?

In this case, in the opinion of the manufacturer of stretched parts without Xizhongnan lighting fixtures, because it is not applicable, the general rolling method cannot be used, but a mandrel is first passed through the stretched part, and then the rolling can be successfully completed operate.

3. How to prevent the stretched parts from pulling?

In order to prevent hair problems in stretched parts, there are approaches we can take that may be noticed. The main points are as follows:

First, the die used has a smooth appearance and should be smooth when drawing.

Second, the hardness of the mold material should not be too low.

Third, do a good job of cleaning the stretched parts, and there should be no dust and dirt.

For stretched parts, the above problems can be said to be very important and basic. I have never done it before. I hope everyone can study and understand carefully, so as to master them in time, and gain something, develop, and develop in the process of product learning. Breakthrough.

The above is about the processing dies of stretched parts, as well as some common sense of the processing of stretched parts. Many customers actually know a little when they choose the manufacturer of stretched parts, so it is easy to be ignored in many professional issues. But this is the professional side of the tensile parts processing factory, and it is recommended to choose carefully. Hope the above content can be helpful to readers.

Reasons and treatment methods for wrinkling of tensile parts

There are many reasons for the wrinkling of the pulling piece, mainly in the following aspects: the stretched blank is not thick enough, the pressure it can bear is naturally small, and it is easy to wrinkle during the stretching process; each blank is not pressed Select the corresponding elongation coefficient for the texture of the material, and the degree of deformation is difficult to control. If the control is not good, deformation will occur; the blank holder is seriously damaged, and the same pressure cannot be applied to the blank, resulting in uneven pressure capacity and wrinkling. .

The thickness of the drawn blank should be relatively thick, so that it can withstand relative pressure during stretching, and it is not easy to deform and wrinkle; choose an appropriate stretching coefficient corresponding to the texture of the blank, and the degree of deformation is easy to control; The rings need to be replaced or repaired frequently, so that the blanks are under equal pressure and are not prone to wrinkling.

1. How to remove wrinkles when stretched parts appear?

1. It has been proved by a large amount of practical experience in production that the main reason for the wrinkling of the stretched parts is the accumulation of materials during the stretching process and the excessive speed of local material movement. When designing the actual solution, the corresponding mechanism of the mold should be adjusted from the above aspects, and good results can be obtained.

2. The way to prevent wrinkling is to determine whether the die head can press the material during stretching, so as to determine the correct flow rate of the sheet. During the drawing process, the flow rate of the sheet material is too fast during the stamping process, which will cause wrinkles; on the other hand, the flow rate of the sheet material is too slow, which may cause the stamping part to crack.

3. When the wrinkles appear evenly around the stretched piece, it should be judged that the pressing force is not enough.

4. When extruding conical and hemispherical parts, most of the material is suspended when the extrusion begins. Since it is easy to cause wrinkling of the side walls, in addition to increasing the blank holder force, the shrinkage ribs should be enlarged to increase the tensile stress in the plate.

5. If the fillet radius of the die is too large, the bending resistance of the blank will be smaller after the blank flows into the die through the fillet of the die. The better the bending resistance, the easier it is to wrinkle. The smaller the diameter of the die, the greater the bending resistance caused by the bending deformation, and the less likely it is to wrinkle, but it is easy to cause cracking and hair pulling of the workpiece.

2. Precautions for the use, maintenance and repair of tensile parts

1. Before using the stretched parts, a strict inspection should be carried out, and the dirt should be cleaned up, and the guide sleeve and the mold of the stretched parts should be carefully checked whether the lubrication is good.

2. According to the installation procedure of the die, install the convex and concave die on the turntable to ensure that the direction of the convex and concave drawing stamping parts is consistent, especially the drawing and pressing parts with direction requirements (non-circular and square) should be careful to prevent wrong installation. opposite.

3. Regularly check the turntable of the bed and the mold mounting seat to ensure the coaxial accuracy of the upper and lower turntables.

4. When installing the mold, the puncher should use softer metal (such as copper, aluminum, etc.) to make the operating tool to prevent the drawing punch from being broken during the installation process.

5. After the cutting edge of the punch and the concave die of the drawn part is worn, stop using it immediately and sharpen it in time, otherwise it will rapidly expand the wear of the cutting edge of the die, accelerate the wear of the die, and reduce the quality of the punching part and the life of the die.

6. In order to ensure the service life of the stretched parts, the die spring should be replaced regularly to prevent the spring fatigue damage and affect the service life of the stretched parts.

The above are the reasons and treatment methods for the wrinkling of the stretched parts. Attention should be paid to the processing and production of the stretched parts. When using mold equipment such as a press or a die, care should be taken to ensure that the strips are carried out under normal working conditions to prevent transportation. The material is fed along the correct position or not according to the corresponding gap. I hope the above can be helpful to readers.