Separation process and forming process in metal stamping parts processing

Xiamen engine oil pump body processing of each kind of plate hardness testing has a specified hardness tester to measure, let's take a look; hot rolled steel plate is usually relatively thick, it is generally stipulated to use Brinell hardness tester to test hardness, Rockwell hardness tester to test hot-rolled steel plate is also OK; HRB scale can be used, portable Rockwell hardness tester can be used to test hot-rolled steel plate without sampling The hardness of cold-rolled steel plate used for processing metal stamping parts is mainly measured by Rockwell hardness tester, usually with HRB scale and harder with HRC scale; the material of thin plate can be used with Wechsler hardness tester, or surface Rockwell hardness tester hrn or HRT scale; the hardness of brass plate for metal stamping parts can be measured with HRB scale of Rockwell hardness tester Inspection: HRF scale is used for softer brass plate and purple copper plate; Wechsler hardness tester can be used for aluminum alloy plate used for processing metal stamping parts; Babbitt hardness tester can be used when the material thickness island is 13mm; bus hardness tester should be used for pure aluminum plate or low hardness aluminum alloy plate; the main material of stamping die is die steel, sometimes hard alloy is also used, and stamping die usually requires It has high hardness and wear resistance, among which heat treatment is essential. Rockwell hardness tester is used to test HRC hardness value of die steel. When the mold is large and inconvenient to move, Leeb hardness tester can be used. In order to improve the surface hardness and wear resistance, many metal stamping dies and Die accessories need surface heat treatment, such as surface nitriding. What are the principles of process design for metal stamping parts.



Manipulator with the development of society, stamping products have developed to various fields, in the processing of metal stamping parts, to stamping, cutting, then what is the order of stamping and cutting? Let's take a look at it? According to the arrangement of blanking sequence of progressive die, punching or notching should be carried out first, then blanking or cutting off can be used to separate the blanking part from the strip. The first punching hole can be used as the positioning hole for the subsequent process. When the positioning requirements are high, the process holes (usually two) for positioning can be punched. When the fixed distance side edge is used, the edge cutting process of the fixed distance side edge is arranged at the same time as the first punching, so as to control the feeding distance. When two fixed distance side edges are used, they can be arranged as one before one after another, or they can also be arranged side by side; multi process blanking parts can be arranged in the order of single process blanking, and then the blank is separated when blanking, and then punching or notching. Then continue the process of positioning, the datum should be consistent to avoid positioning error and dimension chain conversion. When punching holes with different sizes and close distance, in order to reduce the deformation of holes, large holes should be punched first and then small holes should be punched. After the process plan is determined, necessary process calculation and equipment selection are needed to provide necessary basis for mold design. The separation process and forming process in the processing of metal stamping parts.



In addition, when the flanging height of the electronic component processing plant is not large, the die should be designed with a pressing device to prevent wrinkling; the main problem of flanging of compression curved surface is the instability and wrinkling of deformation area. In order to prevent wrinkling, the concave die should be properly modified, and the selection principle of stamping direction is the same as that of elongation flanging. How to reduce the blanking force of metal stamping parts 。



If the processing price of Xiamen automobile parts requires that h is very short, appropriate allowance should be set aside first to increase h. after bending, the added metal should be cut off. 3. The deformation of the hole should be avoided when bending the parts with holes. Secondly, the requirements for deep drawing parts: 4. The shape of metal stamping parts should be simple, and the depth should not be too large. In order to make the drawing times least and easy to form; 5. The fillet radius of metal stamping parts should not increase the process program, otherwise it will increase the drawing times and the number of dies, and it is easy to produce scrap and increase the cost. Whether the metal stamping parts use the elastic unloading plate or the fixed unloading plate depends on the size of the unloading force, and the material thickness is the main consideration. With the increase of the elasticity of the elastic components used in the mould (such as the use of rectangular springs), the unloading force of the elastic unloading plate is greatly enhanced. According to the current situation, when the material thickness is less than 2 mm, the use of elastic unloading plate is closer to the reality when the material thickness is greater than 2 mm. The material thickness of the die is 1 mm, so the elastic unloading plate can be used. The technological problems of stamping parts processing are briefly introduced.



With the development of society, Xiamen gantry milling machine manufacturers have popularized stamping products to various industries, and the molds used to process stamping parts are also various. Each mold has its unique role and characteristics. Today, we want to talk about continuous die. The design of continuous die requires that the parts should have enough strength, the selection of materials should not be wrong, and the operation, adjustment and safety should be considered in the design Assembly, repair, handling and other aspects to ensure the safety of operators in the work; to determine the number of work steps reasonably, the number of work steps of the continuous die of stamping parts is equal to the sum of the single process of decomposition, such as punching and blanking. In order to increase the strength of the stamping die and facilitate the installation of the punch, sometimes it can be completed in several steps according to the number of inner holes Under the principle of not affecting the strength of the die, the less the steps, the better; the smaller the number of steps and the smaller the cumulative error, the higher the accuracy of the punched parts; in the continuous die of multi-step stamping parts, the operations are usually carried out in accordance with the procedures of punching, cutting, grooving, bending, forming and cutting; in the design, the formed parts of each step must not be damaged.