Reciprocating precision compound punching die

Abstract

The invention relates to a reciprocating fine blanking compound die, which belongs to the technical field of dies and aims to solve the technical problem to provide a fine blanking compound die which is capable of reducing blank burrs. The reciprocating fine blanking compound die has the technical scheme that the die comprises an upper die and a lower die, wherein the lower die has the structure that a lower die plate, a lower base plate, a lower fixing plate and a lower concave die are sequentially fixed on a lower die seat through bolts, and a lower oil cylinder is arranged in a central hole 6+5 of the lower die seat, a lower pressure bearing plate is fixed on a piston of the lower oil cylinder, and lower convex and concave die is sleeved in a central hole of the lower concave die; and the upper die has the structure that an upper die plate, an upper base plate and an upper fixing plate are sequentially fixed on the bottom of an upper die seat through bolts, bolts of an upper concave die are connected with the upper concave die after penetrating through the upper die plate, the upper base plate and the upper fixing plate, an upper oil cylinder is arranged in a central hole of the upper die seat, the upper part of an upper convex die is movably sleeved in a central hole of the upper base plate, and the lower part of the upper convex die is sleeved in a central through hole of an upper convex and concave die. According to the blanking die disclosed by the invention, raw materials are blanked bidirectionally to effectively reduce the burrs.

Description

technical field [0001] The invention relates to a reciprocating precision composite blanking die, which belongs to the technical field of dies, and in particular relates to a composite die for blanking technology. Background technique [0002] At present, there are two types of blanking processes used at home and abroad: one is ordinary blanking, and the other is precision blanking. There are burrs on the surface. The burrs not only affect the appearance of the parts, but also easily cause cracks due to stress concentration in the subsequent deformation process. . The height of the burr mainly depends on the strength of the material to be punched, the thickness of the material, the size of the blanking gap and the wear of the die edge, etc. The improvement of the above factors can limit the height of the burr to a certain minimum value, but after the improvement The burrs still cannot meet the punching parts with high requirements for shape and dimensional accuracy, and su...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two types of blanking processes used at home and abroad: one is ordinary blanking, and the other is precision blanking. There are burrs on the surface. The burrs not only affect the appearance of the parts, but also easily cause cracks due to stress concentration in the subsequent deformation process.

The height of the burr mainly depends on the strength of the material to be punched, the thickness of the material, the size of the blanking gap and the wear of the die edge, etc. Although the improvement of the above factors can limit the height of the burr to a certain minimum value, after the improvement The burrs still cannot meet the punching parts with high requirements for shape and dimensional accuracy, and subsequent processing is required to reduce or eliminate burrs

This brings more production costs, and the production efficiency is not high

Images