Reciprocating Fine Blanking Die

Abstract

The invention relates to a reciprocating fine blanking die, which belongs to the technical field of dies and aims to provide a fine blanking die which is capable of reducing blank burrs. The reciprocating fine blanking die has the technical scheme that the blanking die comprises an upper die and a lower die, wherein the lower die has the structure that a lower die plate and a lower concave die are sequentially fixed in a superposition mode from bottom to top on a lower die seat through bolts, and a lower oil cylinder is arranged in a central hole of the lower die seat, and a lower pressure bearing plate on a piston of the lower oil cylinder is fixedly connected with a lower convex die through a lower compression bar; and the upper die has the structure that an upper die plate, a base plate and a convex die fixing plate are sequentially fixed in a superposition mode from top to bottom 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 base plate and the convex die fixing plate, an upper oil cylinder is arranged in a central hole of the upper die seat, an upper compression bar penetrates through the upper die plate, the base plate and the convex die fixing plate, and the upper convex die is sleeved in the central holes of the convex die fixing plate and the upper 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 blanking die, which belongs to the technical field of dies, in particular to a die related to a blanking process. 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 subsequent processing is req...

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

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