Features of motor housing

We all know that motor housing can protect the motor from dust and other pollutants, and can also provide some other performance, such as heat dissipation, durability, and firmness. What characteristics should a good motor home have? Let’s take a look. 1. It has a good shape and size, and is easy to install and beautiful.
2. Firm and tensile.
3. Durable and corrosion resistant.
4. Affordable price.
5. Good cooling performance.
Zhejiang Balford precision stamping can be customized to produce various motor housings, motor housings, and stretch housings. The products are exquisite, high precision, automatic production, high production efficiency, timely delivery and excellent price. We are deeply loved by our customers. . Welcome to consult the drawings and samples. Senior engineers provide one-on-one service.

metal moulding and deep drawing

By means of the deep drawing processes, carbon steel and stainless steel products are developed by China Balford . Any metal product shape belonging to several sectors can be provided. Thanks to the cold deformation, through the deep drawing process, ...

What are the causes of product wrinkling and how to prevent it?

1. Analysis of the causes of wrinkling of tensile parts

The way to avoid wrinkling is to ensure that the mold can hold down the material during the stretching process and to ensure a reasonable speed of movement of the sheet. If the sheet moves too fast when the product is stretched, it will cause wrinkling; on the other hand, if the sheet moves too slowly, it will cause the stamping to crack.

1. Select reasonable pressing equipment

When selecting the pressing equipment, the pressing equipment compresses the deformed part of the blank, and has a significant effect on the pressing material to avoid the flange part from arching and wrinkling. Press material should be appropriate. The pressing equipment is divided into two types: elastic pressing and rigid pressing. Elastic equipment is suitable for shallow drawing and rigid equipment is suitable for deep drawing.

2. Reasonable selection of drawbeads

Setting drawbeads on the binder surface is a useful method to control deformation resistance. The drawbead can well adjust the movement of the material, so that the material movement resistance of each part in the drawing process is uniform, so that the amount of material flowing into the cavity meets the needs of the appropriate parts, and avoids wrinkling and cracking. For curved stretched parts with messy shapes, especially those with small flanges, drawbeads should be set to increase the radial tensile stress of stretching and control wrinkling; the setting direction of the drawbeads is in the radial direction. The part with less stress, that is, the part where the sheet is easy to move. For parts with smaller flanges, some materials (process supplementary materials) can be appropriately added in order to set tensile ribs, and this part can be removed when trimming. For drawn parts with large difference in drawing depth, the draw bead should be set in the part with less material feed, so that too much material in this part can be arranged to be pulled into the cavity of the die to avoid wrinkling.

2. Analysis of the causes of wrinkling of tensile parts

There are many reasons for the wrinkling of the stretched parts during the stretching process, the main reasons are as follows:

1. The drawing depth of the stamping part is too deep, which causes the sheet to move too fast during the feeding process, causing wrinkles.

2. The R angle of the die of the stamping part is too large during the stretching process, which leads to the fact that the punch cannot press the material during the stretching process, resulting in the sheet material moving too fast and causing wrinkles.

3. The pressing ribs of stamping parts are unreasonable, the pressing ribs are too small, and the direction is incorrect, which cannot effectively prevent the sheet material from moving too fast, causing wrinkling.

4. The pressure of the ejector is too small, so that the stamping parts are not formed completely and wrinkle is formed.

The above is the relevant content about the reasons for the wrinkling of stamping products. Of course, the wrinkling of products may also be due to problems with the parameters in the production process, and the parameters need to be redesigned. There are many reasons for product wrinkling. To prevent the cause of wrinkling, we can also check the origin.

How to improve the processing deformation of hardware accessories?

1. What are the main points of hardware accessories processing?

1. The machining accuracy of the parts changes due to internal force. Skilled workers know that during machining, the part is clamped by the three jaws of the lathe to ensure that the forces the part is subjected to during machining are stable over time. It will loosen the lathe chuck, reduce the force on the part and cause deformation.

2. Deformation easily occurs during heat treatment. When machining some thin and small parts, it is usually necessary to heat treat them first. At this time, if the professional knowledge of the technicians is not solid and the structural performance of these parts is not well understood, it is easy to cause the parts to bend.

3. The parts are elastically deformed under the action of external force. When machining parts, lathes and fixtures are often used. When the two are not uniform, the uneven force on the fixed parts will occur, and the deformation will occur when the force is small.

Second, the improvement measures of hardware accessories processing

1. After the parts are heat treated and deformed naturally, they are trimmed with professional cutting tools to ensure the perfection of the parts.

2. Carry out technical transformation to improve the rigidity of components.

Technicians need to improve the process, increase innovation, select the appropriate heat treatment method, change the stiffness of the parts, so that the parts are not easily deformed.

Factors influencing the dimensional accuracy of metal stamping parts

Different metal stamping products have different requirements for accuracy. As long as we meet the accuracy requirements of customers and comprehensively consider production costs, we can produce qualified stamping parts. The factors that affect the dimensional accuracy of metal stampings must be known by everyone. Let’s have a look together.The dimensional accuracy of metal stamping parts refers to the difference between the actual size of stamping parts and the basic size. The smaller the difference, the higher the dimensional accuracy of metal stamping parts.

The influencing factors are as follows:

1. Manufacturing precision of metal stamping die.

2. Gap between male and female dies.

3. Elastic recovery of materials after stamping.

4. Accidental factors in the production process, such as inaccurate positioning, unstable material performance, etc.

It can be divided into precision level and ordinary level. The ordinary level is the precision that can be achieved by more economic means, while the precision level is the precision that can be achieved by stamping technology.

The surface quality of metal stampings shall not be higher than that of raw materials, otherwise, subsequent processing is required to achieve it, increasing production costs.

Four common shapes and characteristics of parts in the processing of drawing parts

1. Deformation characteristics of cylindrical parts.

In the process of sheet stretching, the deformation area is the edge part of the sheet, and the other parts are the transmission area, which does not participate in the main deformation; under the action of tangential pressure and radial tensile stress, the blank produces tangential compression under certain conditions And the radial extension is always under tension and is always limited by compression deformation parameters and ultimate deformation performance.

2. The deformation characteristics of the box.

The deformation characteristics are the same as for the cylindrical simple part. The difference is that the shape is always under tension and always under compression, and the distribution around the blank is uneven, the rounded corners are deformed greatly, and the straight edge is less deformed; around the blank, the parts with a large degree of deformation and a small degree of deformation affect each other.

3. Deformation characteristics of surface parts.

The outer perimeter of the blank is the deep-drawing deformation zone that is always under tension and always under compression; the middle part of the blank is the bulging zone of bidirectional tensile stress.

4. Deformation characteristics of non-rotating surface parts.

The deformation area of ​​the flange blank consists of an epitaxial deep drawing deformation area and an inner bulging deformation area, but these two deformations are unevenly distributed around the blank; when the curved convex edge part is deep drawn, there is still shear deformation.

The above content about the shape of the parts processed by the drawn parts, no matter what kind of parts are processed, the quality of the drawn parts is an important issue that cannot be ignored. High-quality stretched parts should be made of high-quality metal or non-metallic plates; secondly, the surface of the raw materials should not be damaged during stamping; one point is that a high-quality stretched product must have high dimensional accuracy. I hope the above content can be helpful to readers.

What problems will occur in the processing mold of automobile stamping parts?

In the process of automobile stamping parts, the pulling of the mold is mainly forming, drawing and other processes. Find the corresponding position according to the pulling position of the part, and use the oil stone to remove the burr, but pay attention to the uniformity of the rounded corners.

Due to the presence of burrs in automotive stampings, it is usually caused by excessive die clearance. It can be adjusted according to different types of molds and gap sizes to ensure that the size of the parts remains unchanged before and after repair, and at the same time, it can solve the burr problem.

The deformation of the blanking die in the production process, especially the deformation of the appearance parts, has a great impact on the quality of the product. Generally, it can be solved by increasing the blank holder, which is the right remedy.

During the punching process, the waste blocks the customized die holes of automobile stamping parts, which may be because the waste channel is not smooth, or the material channel has a taper, and the waste is not cleaned in time. Based on these three points, cleanup and improvements can be made.

When designing automotive stamping products, it should meet the requirements of use and technical performance to facilitate mold assembly.

Automobile stamping parts must adopt a plan to improve material utilization and reduce material loss, so that stamping parts can be as zero or less scrap as possible.

Design a simple form, reasonable structure, simple and easy process, avoid repeated use of other processing methods, which is conducive to stamping; try to use automatic stamping to improve production efficiency.

Automatic stamping parts, try to use the existing equipment and technology for processing, which is conducive to improving the life of the stamping die.

The automotive stamping parts industry adopts a large number of cold stamping processes to meet the requirements of multi-variety and mass production. For medium-sized cars, most of the covering parts, such as body outer panels, and some load-bearing and support parts, such as frame, automotive stampings and other auto parts.

Automobile stamping parts show that the steel used for cold stamping is mainly steel plates and steel strips, accounting for 72.6% of the whole vehicle. Cold stamping materials are closely related to the processing of automobile stamping parts. The quality of the material not only determines the performance of the product, but also directly affects the quality and cost of the product. Therefore, the rational choice of material selection is an important and complicated work.

1. Wrinkle control measures for vehicle stamping parts

1. Check the wrinkling state. When the crease is evenly generated around the part, it should be determined that the pressing force is insufficient, which can be eliminated by gradually increasing the pressing force. When drawing conical and hemispherical parts, the drawing bead should be added to increase the tensile stress in the diameter of the plate and eliminate wrinkles. Adopt the principle of external looseness and internal tightness to eliminate the problem of internal looseness and external tightness.

2. For lubricating oil, the oil brushing operation should be carried out in accordance with the requirements of the operating procedures system to ensure that the oil brushing and oil brushing position are correct and avoid wrinkling.

3. Under the premise of not affecting the requirements of the whole vehicle, replace the material of the parts with too soft blanks to ensure the quality of the parts and prevent wrinkling.

4. Improve the positioning and increase the pre-bending process if necessary to ensure that the stamping parts will not deviate. Adjust the shape of the sub-material surface to ensure the molding quality and prevent the shape of the pressing surface from not moving, resulting in uneven feeding.

5. For incorrect punching direction, use simulation software to analyze the punching process in the early stage of design to ensure the punching direction. When there are certain requirements for the quality of the die, it is necessary to improve the die.

The above is the relevant content of automobile stamping parts processing molds. During the processing of automobile stamping parts, the molds should be subjected to loads such as shock, vibration, friction, high pressure, stretching, and bending torque. Even if they work at high temperatures, the working environment is complex and easy to wear. Fatigue, fracture, deformation, etc. Therefore, the material requirements for mold work are higher than ordinary parts. Hope the above content can be helpful to readers.

How to reflect the processing quality of metal stamping parts?

1. What are the aspects of the processing quality of metal stamping parts?

1. Chemical analysis, metallographic examination

Analyze the content of chemical elements in the material, determine the particle size level and uniformity of the material, evaluate the level of free cementite, banded structure and non-metallic inclusions in the material, and inspect the material for defects such as porosity.

2. Material inspection

The materials for stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal sheet and strip materials. The raw materials of metal stamping parts should have quality certificates to ensure that the materials meet the specified technical requirements. When there is no quality certificate or other reasons, manufacturers of metal stamping parts can select raw materials for re-inspection as needed.

3. Formability test

Perform bending test and cupping test on the material to determine the work hardening index n value and plastic strain ratio r value of the material. In addition, the test method for the formability of the steel plate can be carried out according to the provisions of the formability and test method of the thin steel plate.

4. Hardness test

The hardness test of metal stamping parts adopts Rockwell hardness tester. Small stampings with complex shapes can be used for small test planes and cannot be tested by ordinary desktop Rockwell hardness testers.

5. Measurement of other performance requirements

Determination of electromagnetic properties of materials and adhesion to coatings and coatings.

The technical requirements for processing metal stamping parts are shared with you here. In addition, it should be noted that the accuracy and surface condition of hot metal stamping parts are lower than those of cold metal stamping parts, but they are still better than castings and forgings, and the amount of machining is less.

Why does the punching size of precision stamping parts not meet the standard?

2. When the cutting edge is worn, the tensile stress of the material increases, and the stamped parts tend to flip and twist. When flipping occurs, the punch size becomes smaller. The strong pressure of the material will plastically deform the material, resulting in an increase in the size of the punched hole. When the strong pressure is reduced, the punching size becomes smaller.

3. The shape of the punch edge. If the end is repaired with a bevel or arc, due to the relief of the punching force, the punching piece is prone to turning over and smearing, so the punching size will be larger. When the punch end is flat (no bevels or arcs), the punch size is relatively small. In the specific operation practice, specific research should be carried out on specific problems, and the methods and countermeasures to solve the problems should be found out.

Well, I hope the above content can help readers.

What is the difference between precision stamping parts and ordinary stamping parts?

1. Processing of precision metal parts stamping parts Metal and plastic processing

1. Furniture hardware manufacturing is a process technology, which requires relatively high cooperation of various materials, mainly a relatively simple artificial assembly line production method. Purchasing management needs to focus on ensuring the timely delivery and quality of delivery of materials.

2. Some products have complex structure, although the sparrow is small, it has all the internal organs. When the operation cannot be mechanized on a large scale, reject rates and rejects can occur, simply having a negative impact on the entire production system.

3. Large consumption of working capital. As many hardware companies, the payment term is often dozens of days or months, and many companies’ funds are firmly fixed on the production line. In particular, foreign trade processing enterprises are highly competitive, and many customers use post-payment methods. In the case of price determination, furniture hardware enterprises are likely to lose greater profits due to changes in material prices and exchange rate issues.

4. The cost of raw materials accounts for a high share of the product price. Therefore, if the cost of raw materials can be reduced, it will have a great effect on increasing the profits of hardware enterprises. However, the general hardware profit is low, and it is a low value-added product. The raw materials of various products account for 70% of the product price. In the case of serious waste of materials, high logistics and storage costs, and late supply, the cost of hardware companies will increase significantly, squeezing their profit margins, not only making the entire production and operation lag, but also producing a large number of defective products.

Three elements of precision electronic stamping parts: At present, most of the automation equipment is used, so labor costs can be saved; due to the high stamping production efficiency, easy automation and mechanization, stamping equipment, stamping materials, stamping technology, dies and personnel can only cooperate with each other to take out stamping For parts, usually the stamping stroke can reach tens to hundreds of times per minute, and the high-precision stamping can also reach thousands of times. It is easy to produce and is generally achieved by stamping.

When producing precision electronic stamping parts, it is necessary to ensure the shape and size of the stamping parts, and customize the product mold so as not to damage the surface quality of the parts. In addition, the mold can be mass-produced, the quality is stable, and the parts can be copied, which is a good processing solution.

The above are the advantages of precision electronic stamping parts introduced by Zhejiang Balford Electromechanical Editor and everyone. I hope the above content will be helpful to everyone!

Production quality control of metal stamping parts

The application of metal stamping parts is very extensive. With the development of science and technology, the requirements for metal stamping parts are also increasing. In order to obtain high-quality stamping products and economic benefits, stamping manufacturers should strictly ...

Production Problems of Metal Stamping and Drawing Parts

Frequently Asked Questions About Metal Stamping Stretch Parts Production

1. The shape and size of the tensile parts do not correspond to the shape and size of the metal stamping tensile parts. The main reason is that bullets and positioning are not allowed. In addition to measures to reduce rebound, the reliability of blank positioning should be improved.

2. Metal stamping tensile parts surface strain is due to improper material selection, low heat treatment hardness, poor finish, concave corner wear, poor curved surface quality, excessive material thickness, unreasonable process options, lack of lubrication and other reasons.

3. Tensile bending crack

(1) When the angle between the bending line and the embossing direction of the sheet material does not conform to the specified arrangement, the bending line shall be perpendicular to the embossing direction when bending in a V-shaped unidirectional manner; when bending in both directions, the bending line and the embossing direction shall preferably be 45. degrees.

(2) The plastic material of the tensile member is poor.

(3) The bending radius is too small, and the pickling quality is poor.

(4) Insufficient lubrication – high friction.

(5) The fillet radius of the convex and concave mold is worn or the gap is too small – the feed resistance is increased.

(6) The quality of the black sheared and punched section is poor – burrs and cracks.

(7) The material thickness is seriously out of tolerance – difficult to feed

Solutions to problems with stretched parts:

1. The shape of the stretch forming process should be as simple and symmetrical as possible, and deep drawing as possible;

2. Stamping Bending Forming Parts that require multiple stretching, in response to the necessary appearance quality, respond to the presence of traces that can occur during the stretching process inside and outside the surface;

3. Under the premise of ensuring the installation requirements, the sidewall of the tensile member should have a certain inclination;

4. The spacing between the edge of the hole and the flange side of the flange should be appropriate.

Differences between deep drawing and metal stamping

With the development of metal processing technology, it is very important to choose the right process to manufacture metal parts. Deep drawing and metal stamping are two different processes, which can produce metal parts according to the needs of the products. Deep drawing metal stamping is a sheet forming process that produces high dimensional accuracy and a smooth surface finish. Metal stamping is to strike the metal plate with a mold to form the desired shape.

What are the common materials in the production of stamping and drawing parts?

1. Stainless steel stamping and drawing parts

Stainless steel tensile parts have the characteristics of high strength, light weight, good wear resistance, and high corrosion resistance. The tensile parts of this material do not require electroplating protection. It is suitable for heat treatment and is often used in fuel systems, braking systems, exhaust systems, oxidation sensors and decorative parts in automobile manufacturing.

2. Low carbon steel stamping and drawing parts

Low carbon steel has the characteristics of excellent formability, stable forming dimensions, high strength, and light weight (see material grade for details). It is often used in various parts in automobile manufacturing, especially high-strength mechanism parts.

3. Aluminum alloy stamping and drawing parts

The characteristics of aluminum alloy tensile parts are: light weight (almost 1/3 of low carbon steel), high strength, non-magnetic, stainless rust, anodized anti-corrosion, suitable for heat treatment, etc., and are often used in bulk in automobile manufacturing and other industries. devices, energy storage devices, beverage containers and the pharmaceutical industry.

4. Copper alloy tensile parts

Copper alloy drawing parts have the characteristics of stable forming dimensions, corrosion resistance, good ductility, and easy welding. The disadvantage is that they are easy to oxidize. Due to the high price of copper alloy materials, waste needs to be reduced and recycled if necessary.

The above is related to the processing materials of stamping and drawing parts. In general, the machining methods for machining parts from different materials will vary. Material properties and processing characteristics should be considered to avoid losses. Hope the above content is helpful to readers.

Design principles of precision stamping die structure

1. Design principles of precision die structure

1. According to the production batch of stamping parts, determine whether to use a simple die structure or a complex die structure. Generally speaking, a simple die structure has a short life and low cost, and a complex die structure has a long life and high cost. Therefore, if the number of stamping parts is small, it is more suitable to use a simple die structure. Larger quantities are more suitable for conventional die structures with longer service life.

2. The accuracy level of the stamping die is determined according to the size requirements of the stamping parts. If the dimensional accuracy and section quality of the stamping parts are high, the precision stamping structure should be used, and the stamping parts with general precision requirements can use the ordinary stamping structure.

3. Select the type of stamping die according to the capability of the existing equipment. For example, when drawing workpieces, a double-action die structure is much better than a single-action die structure.

4. The type of unloading device in the die structure is selected according to the thickness of the stamping plate. For example, when blanking thick plate workpieces, if the requirements for surface straightness and sharpness are not high, a fixed unloading device can be selected. Suitable for selection.

5. Select the mold type according to the technical conditions and economy of mold manufacturing. For example, when the technical requirements of die manufacturing are low, a simple die stamping structure should be designed as much as possible. When the variety of mold equipment is complete and the machining accuracy is high, in order to improve the service life of the mold and achieve mass production, a more complex precision mold stamping structure should be selected.

Designers should consider a variety of factors when choosing a die structure. Because simple stamping dies and general traditional stamping dies have their own advantages and limitations. This requires analysis and comparison to make the selected stamping die structure mode as reasonable and reliable as possible.