Stamping device and stamping method

Abstract

The invention discloses a stamping device and a stamping method, and relates to the technical field of stamping forming. According to the technical scheme, the stamping device comprises a male die and a female die, the male die comprises a main body male die and at least one movable male die, the main body male die and the movable male die are connected in a sliding mode, and the sliding direction between the main body male die and the movable male die inclines from the position close to the center line of the main body male die to the position away from the center line of the main body male die relative to the stamping direction. The sliding of the movable male die relative to the main body male die can be decomposed into the movement in the parallel stamping direction and the movement in the vertical stamping direction, in the vertical stamping direction, the movable male die expands outwards to be matched with the female die to completely cover the bent part of the sheet metal part, and the movable male die is gathered inwards to be conveniently separated from the bent sheet metal part; the limitation of the concave structure of the wrap angle and the bending part on the convex die is avoided; and in the parallel punching direction, the driving direction can be used as the driving direction of the movable male die.

Description

technical field [0001] The invention relates to the technical field of punching and forming, in particular to a punching device and a punching method. Background technique [0002] The server chassis structural parts currently used in the market are mainly composed of sheet metal parts. Due to functional requirements, many sheet metal parts need to bend the straight edges to one side to form folded edges, and some need to bend curved edges. Curved edge bending is not a linear deformation due to material deformation, which is inconsistent with the forming characteristics of the sheet metal material. After bending, the material will flow irregularly. Corner bending is a typical case. Corner wrapping refers to the bending surface that connects two folded edges. Most of the folded edges and wrapping corners are integral structures. When bending, they must be folded at the same time and cannot be bent in steps. Otherwise, the wrapping corners will be torn and the workpiece will b...

AI Technical Summary

Problems solved by technology

[0003] In the bending process of the above-mentioned sheet metal parts, the corners must be covered by the mold, but it is difficult to disengage the punch after bending. The present invention provides a stamping device and stamping method. Punch, to realize the variable size of the stamping part of the punch

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