Composite mold for flaring and punching

Abstract

The invention relates to a compound stamping tool, in particular to an expanding and punching compound tool. A lower tool comprises a lower die base, a cover plate, a pre-expanding female die, a lower expanding female die, two pairs of retaining blocks, tension springs and two pairs of sliders; the cover plate is fixedly rested on the lower die base; the cover plate and the lower die base form two slides; one of the slides corresponds to the pre-expanding female die; the other of the slides corresponds to the lower expanding female die; the pre-expanding female die is composed of a pre-expanding female die base fixed on the lower die base and a pre-expanding female die cover arranged in the slides of the cover plate; the lower expanding female die is fixed in the middle of the lower die base; the retaining blocks are fixed on two sides of the lower die base through bolts; one pair of the retaining blocks correspond to the pre-expanding female die, and the other pair corresponds to the lower expanding female die; each pair of sliders is connected with the corresponding pair of retaining blocks through one tension spring. The aim of the invention is to provide the compound tool whereby a pipe can be expanded and punched highly precisely.

Description

technical field [0001] The invention relates to a compound stamping die, in particular to a flaring and punching compound die. Background technique [0002] Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, called cold stamping die (commonly known as cold stamping die). Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation to obtain the required parts. [0003] Classified according to the degree of process combination; [0004] a. Single-process mold is a mold that only completes one stamping process in one stroke of the press. [0005] b. The composite mold has only one station. In one stroke of the press, two or more stamping processes can be completed at the same station at the same time. [0006] c. Progressive die (also known as continuous d...

AI Technical Summary

Problems solved by technology

[0007] When stamping pipes with existing molds, single-process mold pre-expanding process, flaring process and punching process are used to stamp separately, and the precision of the pipe after forming is not high

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