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What is included in the calibration process in the metal stamping process?

by:Fortuna     2021-03-04
The leveling and shaping of the metal stamping parts is a trimming forming process. Most of them are carried out after the punching, bending, drawing and other stamping processes. The main purpose is to improve the flatness of the surface of the metal stamping parts or to adjust the fillet radius of the stamping parts. Some shapes and sizes are trimmed to meet the requirements of parts. This type of process is related to the quality and stability of the product, so it is widely used. 1. The characteristics of this type of process include the following points: ① The amount of deformation is small, and it is usually formed in a local area to achieve the purpose of trimming, so that the metal stamping parts meet the requirements of the part drawing. ②After leveling and shaping are required, the error of the metal stamping parts is relatively small, so the precision of the mold is relatively high. ③When the slider of the press reaches the lower pole, a correction force must be applied to the metal stamping parts. Therefore, the equipment used must have a certain degree of rigidity. It is best to use a precision press for this type of process. If a general mechanical press is used, it must be equipped with a protective device to prevent damage to the equipment. 2. There are many ways of leveling and equipment leveling, such as metal stamping die leveling, manual leveling and school leveling on special equipment. Mold leveling is mostly carried out on a friction press; thick material leveling is mostly carried out on a precision press or a friction press; in mass production, thick plates can also be leveled on a hydraulic press in stacks, and the pressure is stable and long Time retention; when leveling, drawing, bending and other processes are combined, a crankshaft or double-action press can be used. At this time, a safety device must be installed on the mold or equipment to prevent the fluctuation of the thickness of the metal stamping parts from damaging the equipment; Small flat parts or strips can also be used for rolling flattening. When the two sides of the part are not allowed to have indentations or the leveling area is large, and the flatness is required to be higher, heating leveling can be used. The stacked parts are flattened with a clamp, and then the whole is heated in the furnace. The increase in the temperature of the blank reduces the yield strength, and the internal stress caused by the reverse bending deformation during flattening also decreases, thereby greatly reducing the rebound and ensuring the better High leveling accuracy. Article recommendation: What are the characteristics of the flanging process in the stamping process? Previous post: Analysis of shape correction in the process of metal stamping parts
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