Square tube punching device and process

Abstract

The invention discloses a square tube punching device and process. The square tube punching device comprises a shrinkage mechanism and a driving mechanism, wherein the shrinkage mechanism comprises apunching concave mold core and an oblique sliding block framework; a plurality of sliding block troughs are arranged on the bottom surface of the punching concave mold core; an oblique sliding block is placed in each sliding block trough; a guide pin is arranged one end of the punching concave mold core; the driving mechanism comprises a driving sliding block, a translation sliding block, a nitrogen spring, a connecting moving block and a driving seat; one end of the connecting moving block is connected with one end of the oblique sliding block framework; the other end of the connecting movingblock is movably connected onto the driving seat; the driving sliding block is positioned between the connecting moving block and the translation sliding block; the other side of the translation sliding block is connected with the nitrogen spring; and the translation sliding block is driven by the nitrogen spring to reset. The square tube punching device disclosed by the invention is compact andreasonable in structure; the size of the punching concave mold core is smaller than the inner size of a square tube; and the shrinkage mechanism is driven by the driving mechanism to adjust the position of the oblique sliding block framework. Consequently, the punching concave mold core can closely fit the inner wall of square tube, and the problems about penetration difficulty and collapse duringthe punching process can be solved.

Description

technical field [0001] The invention relates to the technical field of precision punching dies, in particular to a square tube punching device. Background technique [0002] The case of square tube punching is often encountered in stamping production. Square tube punching requires a punching die core, and the square tube needs to be pierced on the punching die core to be punched. Relatively large, it is difficult to penetrate the die when the tolerance of the pipe goes down, and the operation is difficult. When the tolerance of the pipe goes up, the hole punched out of the pipe will collapse, and the product quality cannot be guaranteed. Contents of the invention [0003] The purpose of the present invention is to provide a square tube punching device, which solves the problems of difficulty in penetrating the square tube into the punching die core and punching collapse in the prior art. [0004] In order to solve the problems of the technologies described above, the pres...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a square tube punching device, which solves the proble

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