Stress relief stamping die, stress relief stamping method and metal plate stamping part

Abstract

The invention discloses a stress relief stamping die, a stress relief stamping method and a metal plate stamping part. The stress relief stamping die is used for stamping a convex hull on a plate bodyof a metal plate and comprises a male die and a female die, the male die comprises a pressing head protruding towards the female die, the female die comprises a forming cavity corresponding to the pressing head, the forming cavity and the pressing head are matched to form the convex hull, the male die comprises a step surrounding the periphery of the pressing head, and the female die comprises astep groove surrounding the periphery of the forming cavity. The step surrounding the periphery of the pressing head is arranged on the male die, and the step groove surrounding the periphery of the forming cavity is arranged on the female die, so that during stamping, a circle of externally convex step part can be formed on the periphery of the convex hull of the metal plate stamping part, so that the internal stress between the convex hull and the plate body is sheared, the deformation of the plate body caused by relief of the internal stress is effectively limited, the stability of the flatness is guaranteed, and the stable operation of equipment is facilitated.

Description

Technical field [0001] The invention relates to the technical field of stamping, and in particular to a stress-relief stamping die, a stress-relief stamping method and a metal plate stamping part. Background technique [0002] Stamping is a very common processing technology. It mainly relies on presses and molds to apply external force to plates, strips, pipes and profiles to cause plastic deformation or separation, so as to obtain workpieces (stamping parts) of the required shape and size. [0003] Because the metal sheet is thin and its rigidity is poor, it is easy to deform. Therefore, in the application, a number of elongated convex hulls are often stamped and formed on the metal sheet to improve its overall mechanical strength, such as figure 1 with figure 2 Shown. figure 1 with figure 2 The metal plate stamping shown includes a plate body 9 and a convex hull 90 protruding from the plate body 9. Specifically, the plate body 9 includes an upper surface 9a and a lower surface 9...

AI Technical Summary

Problems solved by technology

[0004] However, the metal plate will undergo plastic deformation during stamping and forming, and internal stress will be generated inside the material. If the internal stress is not eliminated or restricted, the metal plate will warp when the internal stress is released, and it is difficult to ensure its overall flatness

Therefore, even if the flatness of the stamped metal plate stamping parts is adjusted by the orthopedic device, the internal stress caused by the deformation of the material still exists, and the metal plate may still release the internal stress and warp during use, thus affecting Equipment

In some occasions, especially in the electronic field, such as in the chassis, the flatness of the stamped metal parts is highly required. If the flatness of the stamped metal parts cannot be guaranteed, once the metal plate warps and touches the electronic components , it is easy to burn out electronic components and make the equipment scrapped

Images