System suitable for metal powder melting material increasing manufacturing

Abstract

The invention discloses a system suitable for metal powder melting material increasing manufacturing. The system is formed by compositing of a fiber laser galvanometer scanning mechanism and a high-speed grinding head. The fiber laser galvanometer scanning mechanism is provided with an XY workbench. The high-speed grinding head is arranged on a Y axis of the XY workbench through a Y axial sliding block. After multiple layers are manufactured on a workpiece, the high-speed grinding head slides along the Y axis of the XY workbench and carries out the feeding motion in the X axial direction at the same time, and high-speed grinding is carried out on the workpiece. The system suitable for the metal powder melting material increasing manufacturing has the advantages that after the high-speed grinding head is composited with the fiber laser galvanometer scanning mechanism, in the material increasing manufacturing process, scanning is carried out on a powder bed through the fiber laser galvanometer scanning mechanism, metal in a selected area is melted, a protrusion and a warpage in the partial workpiece can be removed by the high-speed grinding head, the upper surface of the workpiece can be maintained in smooth, the residual protruding peak on the surface of the workpiece and the plastic deformation degree can be effectively lowered, and the roughness on the surface of the workpiece is favorable to be lowered.

Description

technical field [0001] The invention relates to a system suitable for metal powder melting additive manufacturing, which belongs to the field of additive manufacturing equipment. Background technique [0002] When using selective laser melting (Selective Laser Melting, SLM) technology to manufacture metal parts, since the metal powder is quickly melted and solidified immediately after being scanned by a fast-moving laser beam, it can directly manufacture metal parts of any complexity. [0003] Due to the rapid melting and rapid solidification of metal powder will form a large temperature gradient and thermal stress, it is easy to cause defects such as local protrusions (pilling) and warping of metal parts. If such defects continue to occur during the additive manufacturing process, it will seriously affect the dimensional accuracy and density of the workpiece. Contents of the invention [0004] In order to solve the deficiencies of the prior art, the purpose of the presen...

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Problems solved by technology

[0003] Due to the rapid melting and rapid solidification of metal powder will form a large temperature gradient and thermal stress, it is easy to cause defects such as local protrusions (pilling) and warping of metal parts

If such defects continue to occur during the additive manufacturing process, it will seriously affect the dimensional accuracy and density of the workpiece

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