Finish machining process for cold-punching special-shaped square holes

Abstract

The invention discloses a finish machining process for cold-punching a special-shaped square hole. The square hole is roughly machined, an amount of 0.5mm is left on each side of a material, a square hole-punching punch die is used for first punching off 0.3mm and then finish-punching off 0.2mm on a punch, and thereby a finished product is machined.

Description

technical field [0001] The invention relates to a finishing process for cold stamping special-shaped square holes. Background technique [0002] At present, the precision of square hole processing technology is low, the tolerance of square hole is large, and the finish is not enough. Contents of the invention [0003] The technical scheme that the present invention adopts for realizing the above object is: [0004] A cold stamping special-shaped square hole finishing process, characterized in that the square hole is roughly machined, and 0.5mm is left on each side of the material. The square hole is used to punch the tire on the punching machine, and the first punching is 0.3mm, and the second fine punching is 0.2mm. mm, processed into finished products. [0005] Beneficial effects: ensure the tolerance and smoothness of the square hole, and overcome the problem of difficult processing. Detailed ways [0006] A cold stamping special-shaped square hole finishing proces...

AI Technical Summary

Problems solved by technology

[0005] Beneficial effects: ensure square hole tolerance, smoothness, overcome processing difficulties