Bending punching die

Abstract

The invention provides a bending punching die, and belongs to the technical field of dies. The bending punching die solves the problem that in an existing die, centering between holes after porous workpiece bending cannot be guaranteed. The bending punching die comprises a lower die, an upper die and positioning pins arranged on the lower die. The upper surface of the lower die is provided with aforming groove capable of being matched with the upper die. The lower die is provided with two positioning holes, and the two positioning holes are formed in the two opposite sides of the forming groove correspondingly. The two positioning pins are arranged and are inserted in the corresponding positioning holes. The upper ends of the positioning pins protrude upwards relative to the upper surfaceof the lower die, the lower end face of a positioning protruding edge abuts against the upper surface of the lower die, and the outer edge of the upper end face of the positioning protruding edge isprovided with an arc chamfer. According to the structure, centering after workpiece bending is guaranteed; through positioning pin replacement, the size of the positioning protruding edge is changed so that the bending punching die can adapt to different hole diameters, the die can bend different workpieces, and universality of the die is improved.

Description

technical field [0001] The invention belongs to the technical field of moulds, and relates to a stamping die, in particular to a bending stamping die. Background technique [0002] Stamping is the use of a mold installed on a press to apply pressure to the material to cause separation or plastic deformation to obtain the required parts. The shape of some parts needs to be bent and twisted. Most of the existing parts are twisted by other mechanical equipment after stamping. This kind of parts processing method has a bending angle that cannot guarantee consistency. , affect the normal use of parts. [0003] At present, China Patent Network discloses a bending die with positioning pins (authorized announcement number: CN202803921U), including an upper die base, a lower die base, a die handle, a punch and a die, and the punch is arranged on the lower surface of the upper die base , the concave mold is composed of two symmetrically arranged concave modules, the concave module i...

AI Technical Summary

Problems solved by technology

However, in the actual processing process, the positioning of the workpiece cannot ensure that the hole on the workpiece is exactly aligned with the positioning pin, resulting in the positioning pin not being able to be inserted into the hole accurately during the bending process of the workpiece, and the workpiece is easy to be damaged during the stamping process. The holes cause damage or damage to the whole workpiece, and the centering between the holes after the porous workpiece is bent cannot be guaranteed.

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