Deep-cup-shaped thin-wall part current auxiliary composite spinning forming device and method

Abstract

The invention discloses a deep-cup-shaped thin-wall part current auxiliary composite spinning forming device and method. The device comprises a spinning core die, a tailstock and a plurality of spinning rollers distributed on the circumference of the spinning core die at equal intervals. The spinning rollers are arranged in a staggered manner in the axial direction and the radial direction of thespinning core die. The spinning surfaces of each spinning roller comprise a deep drawing spinning surface, a flowing spinning segment and a shaping spinning surface. The deep drawing spinning surfaces, the flowing spinning segments and the shaping spinning surfaces of all the spinning rollers are distributed in a staggered mode in the axial direction and the radial direction of the spinning core die. In the spinning process, arc-shaped surface shapes and structures of the spinning rollers for deep drawing and spinning are different, so that the spinning rollers focus on exerting pressure to different portions of a blank respectively in each rotation period of the spinning core die, the pass reduction is increased, the spinning pass is reduced, the production efficiency can be improved, andthe defects that the material processing process is discontinuous, finally workpieces are hardened and materials are broken and cannot be used are reduced.

Description

Technical field [0001] The invention relates to the field of plastic processing and forming in mechanical engineering, in particular to a current-assisted composite spinning forming device and method for deep cup-shaped thin-walled parts. Background technique [0002] The deep cup-shaped thin-walled part is a thin-walled complex component with a bottom and a relatively large long diameter. Due to the large aspect ratio, the spinning process can be used for forming. Generally, it is necessary to first use multi-pass deep-drawing spinning forming to obtain a shallow cup-shaped part, and then perform multi-pass flow spinning forming to reduce the wall thickness to obtain a deep cup-shaped thin Wall parts. [0003] The main problems are as follows: [0004] 1. The two spinning processes of deep-drawing spinning and flow spinning are completely separated from each other, which makes the workpiece processing flow and working time too long; and after the deep-spinning operation, it is nec...

AI Technical Summary

Problems solved by technology

It solves the problem that in the prior art, due to the discontinuity of deep drawing spinning and flow spinning (or shaping spinning) in the workpiece production process, the hardening of the workpiece leads to material rupture, the need to readjust the tooling when changing the process, and the long production cycle And other issues

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