Burr-free punching mold system

Abstract

The invention relates to a burr-free punching mold system. The burr-free punching mold system comprises a main punching mold, a back-punching mold, an upper template and a lower template, wherein the main punching mold comprises a first convex die and a first concave die; the back-punching mold comprises a second convex die and a second concave die; the first concave die is fixed on the upper template, and the second concave die is fixed on the lower template; during punching, a punched piece is firmly pressed by both the first concave die and the second concave die; the first convex die penetrates through the second concave die to complete primary punching, and then the second convex die penetrates through the first concave die to finish secondary punching. Compared with the prior art, the burr-free punching mold system has advantages of being wide in application range, low in production cost, high in producing efficiency and the like.

Description

technical field [0001] The invention relates to a mold, in particular to a burr-free punching mold system. Background technique [0002] The burr generated during the processing of parts is a difficult problem. The domestic and foreign processing industries have spent billions of dollars to solve the problem of processing burrs. A few days ago, although the elastic medium was used to replace the traditional steel punch or die to achieve the processing requirements of less than 0.30mm thin plate without burrs, but when the plate thickness is greater than 0.30mm, it is difficult to meet the requirements, and even no holes can be punched. The smaller it is, the harder it is to process. Punching holes with traditional steel punches is too thin in diameter and easy to break. It is very troublesome and time-consuming to replace and align the punches. At the same time, due to plastic deformation, the bottom of the punching hole is easy to form a bell mouth shape and tear, resulti...

AI Technical Summary

Problems solved by technology

Recently, although the elastic medium is used to replace the traditional steel punch or die to achieve the processing requirements of less than 0.30mm thin plate without burrs, but when the plate thickness is greater than 0.30mm, it is difficult to meet the requirements, and even no holes can be punched. The smaller it is, the harder it is to process

Using traditional steel punches for punching, because the diameter is too thin, it is easy to break, and it is very troublesome and time-consuming to replace the punches and align them.

At the same time, due to plastic deformation at the bottom of the punching hole, it is easy to form a bell mouth shape and tear, resulting in passive burrs

[0003] At present, many stamping parts are required to be free of burrs, and the parts need to be deburred after stamping, which increases the working hours and costs of stamping parts.

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