Machining method and device for sheet metal part with variable wall thickness based on 3D printing and incremental forming technology

Abstract

The invention discloses a machining method and device for a sheet metal part with a variable wall thickness based on a 3D printing and incremental forming technology. The machining device comprises anincremental forming chuck (1), an incremental forming tool head (2), a laser beam (3) and a powder spraying head (4); the powder spraying head (4) sprays powder on the place where needs to increase the wall thickness or is prone to becoming thinner in the forming process on a sheet; the laser beam (3) is used for making the powder to clad on the surface of the sheet, the material thickness is increased, and for the area where thinning is not required for the part or the wall thickness does not need to be increased, powder feeding operation is not conducted; meanwhile, the laser beam (3) is also used for heating the surface of a material, so that plastic forming is facilitated; and the material is formed by the incremental forming tool head through the heating area. According to the methodcombining a laser synchronous powder feeding 3D printing technology with the incremental forming technology, the problems that the side wall becomes thin during incremental forming of the sheet, andthe thickness cannot be controlled are solved.

Description

technical field [0001] The invention relates to the progressive forming manufacture of sheet metal parts, especially the progressive forming manufacture of sheet metal parts with large side wall inclination angles. Background technique [0002] Sheet metal forming is used extensively in manufacturing industries such as automotive and aerospace. The traditional sheet metal forming process uses dies for stamping, which makes the production cycle longer and more expensive, and is more suitable for mass production of parts. However, in the production of small and medium batch parts, the cost of mold manufacturing will significantly increase the cost of a single part, and there is a link of mold design and manufacture in the part manufacturing process, so it is difficult to quickly produce the designer designed. Parts, it is even more difficult to respond quickly to the individual needs of users. In order to meet the needs of the market, various advanced sheet metal forming met...

AI Technical Summary

Problems solved by technology

However, in the production of small and medium batch parts, the cost of mold manufacturing will significantly increase the cost of a single part, and there is a link of mold design and manufacture in the part manufacturing process, so it is difficult to quickly produce the designer designed. Parts, it is more difficult to respond quickly to the individual needs of users

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