Multi-axis milling and laser melting composite 3D printing apparatus

Abstract

The invention relates to the technical field of 3D printing apparatuses and discloses a multi-axis milling and laser melting composite 3D printing apparatus. The multi-axis milling and laser melting composite 3D printing apparatus comprises a base on which a machining platform is arranged; a powder spreading structure for spreading a metal powder on the machining platform is arranged on the base; an electron beam emitting structure for melting the metal powder layer to form a single-layer or multi-layer approximate body and a milling head capable of moving in the three-dimensional space are arranged above the machining platform; the milling head is provided with a milling tool capable of rotating and swinging. The 3D printing apparatus is integrated with the traditional removal type precision machining taking laser milling as the principal method and the incremental laminating manufacturing process with electron beam melting 3D printing as the principal method, and therefore, the defects of the 3D printing technology in the aspects such as size and shape are overcome, the restriction of cutting to the complexity of parts and the like is overcome, the machined parts do not need to be machined secondarily, and the problems of difficult clamping, large machining error, part deformation during machining and difficult machining are avoided.

Description

technical field [0001] The invention relates to the technical field of 3D printing equipment, in particular to multi-axis milling processing and laser fusion composite 3D printing equipment. Background technique [0002] Metal melting 3D printing technology (Selective Laser Melting, SLM) uses high-brightness laser to directly melt metal powder materials without binders, and directly forms arbitrary complex structural parts with the same performance as castings from 3D models. [0003] Although metal fusion 3D printing technology can form parts that reach the casting strength level, the shape error of the formed parts is large and the surface finish is not high. In this way, the formed parts need to be processed twice by traditional machining methods. Only by processing can the shape and surface accuracy required by the aviation manufacturing industry be obtained. However, most parts in the aerospace industry, such as engine nozzles, blades, honeycomb structure combustion ch...

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Problems solved by technology

[0008] The purpose of the present invention is to provide multi-axis milling processing and laser fusion composite 3D printing equipment, aiming to solve the problem of secondary processing of parts processed by metal fusion 3D printing technology on machine tools in the prior art, which has difficulties in clamping and large processing errors , Part variability and difficult processing problems

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