A current-assisted composite spinning forming device and method for deep cup-shaped thin-walled parts

Abstract

The invention discloses a current-assisted composite spinning forming device and method for a deep cup-shaped thin-walled part, which comprises a spinning mandrel, a tail top, and a plurality of spinning wheels equally distributed on the circumference of the spinning mandrel; each spinning wheel The axial and radial directions of the spinning mandrel are staggered; the spinning surface of each roller includes the drawing spinning surface, the flow spinning section, and the shaping spinning surface; the staggered arrangement is the The drawing spinning surface, the flow spinning section and the shaping spinning surface are evenly distributed in the axial and radial directions of the spinning mandrel. In the spinning process, due to the difference in the shape and structure of the arc-shaped surface of each rotary wheel for deep spinning, during each rotation cycle of the spinning mandrel, each rotary wheel focuses on applying pressure to different parts of the blank. It is beneficial to increase the reduction of each pass and reduce the number of spinning passes, which not only improves production efficiency, but also helps to reduce defects such as material cracking and unusability due to discontinuous material processing, which eventually leads to workpiece hardening.

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 length and diameter. Due to the large length-to-diameter ratio, the spinning process can be used to form. Generally, it is necessary to use multi-pass deep drawing and spinning to obtain shallow cup-shaped parts, and then perform multi-pass flow spinning to reduce the wall thickness to obtain deep cup-shaped thin parts. wall parts. [0003] There are mainly the following problems: [0004] 1. The two spinning processes of deep drawing spinning and flow spinning are independently and completely separated from each other, which makes the processing process and operation time of the workpiece too long; an...

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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