Metal stamping process is a metal processing method, it is established on the basis of metal plastic deformation, the use of mold and metal stamping equipment to exert pressure on the sheet metal, so that the sheet metal plastic deformation or separation, so as to obtain a certain shape, size and performance of the parts (metal stamping parts).
Metal stamping forming technology in automobile body manufacturing process occupies an important position, especially large automobile body covering parts, because the most complicated shape, the structure of large size, some still space curved surface, and surface quality requirement is high, so use metal stamping processing method is used to make these parts can't be matched by other processing methods. The cab of the truck, the sheet metal parts in front of the truck, the cargo car plate and the various body covering parts of the car and the various skeletons of the bus, are almost all made by the metal stamping processing method.
Process characteristics
1) Metal stamping is a processing method with high production efficiency and low material consumption. metal stamping process is suitable for the production of large quantities of parts products, easy to realize mechanization and automation, with high production efficiency, at the same time, Metal stamping production can not only strive to achieve less waste and no waste production, and even in some cases, there are corners of surplus material, can also make full use of.
(2) The operation process is convenient and does not require the operator to have a high level of skill.
(3) The stamped parts generally do not need to be machined again, with high dimensional accuracy.
(4) Metal stamping parts have better interchangeability. The metal stamping processing stability is good, the same batch of Metal stamping parts. Can be exchanged for use, does not affect the assembly and product performance.
(5) Due to the sheet metal as the material, its surface quality is better, for the subsequent surface treatment process (such as electroplating, spray painting) provides convenient conditions.
(6) Metal stamping processing can obtain high strength, high stiffness and light weight parts.
(7) the cost of mass production of Metal stamping parts with die is low.
(8) Metal stamping can make other metal processing methods difficult to process the shape of complex parts.
Metal stamping process
The metal stamping process can be divided into four basic processes:
Blanking: the Metal stamping process (including punching, blanking, trimming, cutting, etc.) used to separate sheet materials.
Bending: the metal stamping process of bending the sheet material into a certain Angle and shape along the bending line.
Deep drawing: the metal stamping process that changes the flat sheet material into various open hollow parts, or further changes the shape and size of the hollow parts.
Fine blanking: for products with high blanking accuracy, for products with high requirements on size and surface light amount, the process of fine blanking die meets the requirements of the drawing.
Local forming: the Metal stamping process (including flanging, bulging, leveling and shaping) that changes the shape of the blank or metal stamping parts by local deformation of various properties.
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