Electron beam additive manufacturing device

Abstract

The invention provides an electron beam additive manufacturing device. The electron beam additive manufacturing device comprises a vacuum forming chamber, a part bearing platform, an electronic gun and an electronic gun vacuum chamber; the electronic gun vacuum chamber is mounted at the top of the vacuum forming chamber, and communicates with the vacuum forming chamber; the part bearing platform is mounted in the vacuum forming chamber; an electronic gun lifting guide rail is arranged in the electronic gun vacuum chamber; and the electronic gun is mounted on the electronic gun lifting guide rail, and can move up and down along the electronic gun lifting guide rail. The electron beam additive manufacturing device is higher in production efficiency and forming precision.

Description

technical field [0001] The invention can be used in the field of additive manufacturing of metal parts, and in particular relates to an electron beam fuse additive manufacturing device. Background technique [0002] Additive manufacturing technology is also known as 3D printing or rapid prototyping technology. It is a technology based on digital three-dimensional model drawing files, using materials such as metal powder, wire or bondable plastic, to construct objects by stacking and accumulating layer by layer. Rapid prototyping manufacturing technology is widely used in mold manufacturing, industrial design and other fields, and is gradually being used in the direct manufacturing of some products, especially some high-value applications, such as human implanted hip joints, teeth and some aircraft parts. [0003] Metal parts rapid prototyping manufacturing methods mainly include laser selective sintering (SLS), laser selective melting (SLM), laser coaxial powder feeding dir...

AI Technical Summary

Problems solved by technology

[0005] These methods all have the following disadvantages: (1) The electron gun, wire feeding mechanism, and parts carrying platform are all installed in the vacuum forming chamber, the size of the parts that can be produced is limited by the stroke of the internal motion mechanism, and the utilization rate of the vacuum forming chamber is low. Production of large parts necessitates the creation of larger vacuum forming chambers

(2) The wire feeding mechanism is installed inside the vacuum forming chamber. When replacing the welding wire, the vacuum forming chamber must be deflated, which affects the continuous processing of parts and greatly reduces production efficiency.

(3) The wire feeding position is fixed, and it cannot be guaranteed that the welding wire is always fed from the front of the molten pool, and the forming effect is poor

In conclusion, the use of ordinary fuse rapid prototyping equipment is not conducive to the electron beam fuse additive manufacturing of large metal parts

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