Cracking-free stamping die for hole flanging of stainless steel thick plate

Abstract

The invention discloses a cracking-free stamping die for hole flanging of a stainless steel thick plate. The cracking-free stamping die comprises an upper die and a lower die, wherein a hole punching punch and a hole flanging punch are arranged on the upper die in a spaced positioning manner; a hole extruding punch is arranged on the lower die in a positioning manner; a waste via hole which corresponds to the hole punching punch and is matched with the hole punching punch in size is formed in the lower die; a hole flanging inner jack which corresponds to the hole flanging punch and is matched with the hole flanging punch in size is arranged on the lower die; an avoiding hole which corresponds to the hole extruding punch and is matched with the hole extruding punch in size is formed in the upper die. According to the cracking-free stamping die disclosed by the invention, the problem that the stainless steel thick plate is cracked during hole flanging can be effectively solved, so that the phenomenon that normal production cannot be realized caused by cracking is reduced, the productibility of the die and the stability of products are guaranteed, the production efficiency is improved, and extra waste of production cost of products is reduced.

Description

technical field [0001] The invention relates to a stamping die, in particular to a non-cracking stamping die for turning holes in thick stainless steel plates. Background technique [0002] Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, called cold stamping die (commonly known as cold stamping die). Turning is a stamping process that turns the material into a side flange along the periphery of the inner hole. Stainless steel thick plate has good cold formability, and is widely used in automobile structural parts such as automobile girders and beams that require good cold forming performance and high or high strength requirements. Thick stainless steel plates are usually turned through stamping dies. The traditional process is to punch small holes first, then press the rough edge, and finally turn the holes. For example, when turning a 2.0mm thick stainless steel p...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention proposes a non-cracking stamping die for stainless steel thick plate turning holes, which can effectively solve the problem of cracking when turning stainless steel thick plates, thereby reducing the phenomenon that normal production cannot be caused by cracking, and ensuring the reliability of the mold. Productivity and product stability, improve production efficiency, reduce additional waste of product production costs

Images