Deep drawing forming method for metal housing of deep cylindrical part and multi-pass one-time forming die

Abstract

The invention discloses a deep drawing forming method for a metal housing of a deep cylindrical part and a multi-pass one-time forming die. The deep drawing forming method comprises the following specific steps of (1) performing blanking, (2) locating a plate, (3) pressing the plate with a blank holder 5, and (4) performing multi-pass one-time molding. The multi-pass one-time forming die comprisesa male die and a female die corresponding to the male die; the male die comprises a last-pass male die as well as an intermediate-pass male die and a first-pass male die which sequentially sleeve thelast-pass male die; the female die comprises a last-pass female die as well as an intermediate-pass female die and a first-pass female die which are sequentially arranged on the last-pass female die;the first-pass female die is provided with locating pins for locating the plate; and the edge pressing ring sleeves the first-pass male die. The trouble of positioning the plate in multiple times dueto transverse movement of a blank in a multi-pass multi-step continuous stamping process can be saved, the problems of waste materials, die clamping and the like generated during multi-pass multi-step deep drawing can be solved, and the production rhythm and rate can be increased.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to deep-drawing forming, molds, deep-drawing processes, etc., in particular to a deep-drawing forming method for a metal shell of a deep cylindrical part and a multi-channel one-time forming die. Background technique [0002] With the continuous advancement of science and technology, the application of deep cylindrical parts is becoming more and more widespread, such as battery steel shells, DI tanks, deep tanks and other products, these products have a significantly large aspect ratio (usually greater than 3) and deep drawing The forming process cannot be deep-drawn in one step, and requires a multi-step deep-drawing process. [0003] At present, there are mainly the following methods for preparing such deep cylindrical parts: one is reverse extrusion forming; the other is stamping forming. Reverse extrusion is relatively material-saving, but at the beginning of the extrusio...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide the requirements of avoiding the transverse movement of the blank and the multiple positioning of the sheet during the multi-pass and multi-step continuous stamping process, and to solve the problems caused by the multi-pass and multi-step deep drawing. Problems such as scrap and mold jamming, deep-drawing forming method for metal shell of deep cylindrical parts and multi-channel one-time forming mold to improve production rhythm

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