A composite system capable of micro-area melting and finishing of metal powder

Abstract

The invention discloses a composite system capable of realizing micro-zone melting and finish machining of metal powder. The composite system is characterized by being formed by compounding an optical fiber laser galvanometer scanning mechanism and a laser engraving mechanism, wherein the optical fiber laser galvanometer scanning mechanism is provided with an XY worktable; a laser engraving head of the laser engraving mechanism is arranged on a Y axis of the XY worktable; after a plurality of forms are formed on a workpiece, the XY worktable controlled by slicing software drives the laser engraving head to perform laser engraving on the workpiece according to a path controlled by the slicing software. The composite system disclosed by the invention has the beneficial effects that after the optical fiber laser galvanometer scanning mechanism and the laser engraving mechanism are compounded, the optical fiber laser galvanometer scanning mechanism performs quick portioned scanning, and the laser engraving mechanism engraves the internal and external boundary lines in a material increase manufacturing process, and quick scanning and engraving are alternatively performed, so that the workpieces with accurate sizes can be obtained.

Description

technical field [0001] The invention relates to a composite system, in particular to a composite system capable of realizing micro-area melting and finishing of metal powder, and 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 is possible to directly manufacture metal parts of any complexity. [0003] When manufacturing metal parts, a laser galvanometer scanning mechanism with dynamic focus is usually used. The laser beam of this mechanism is expanded by a beam expander to obtain a uniform parallel beam, and then the parallel beam is projected to X in turn after dynamic focusing and beam amplification. Axis, Y-axis galvanometer, and correspondingly reflected to the work table to form a scanning point on the plane. ...

AI Technical Summary

Problems solved by technology

In fact, during the installation and operation of the mechanism, the eccentricity error of the input beam, the temperature drift and zero point drift of the galvanometer mechanism will cause a large error between the scanning graph and the theoretical graph, although the error information of the feature points can be corrected , but there is still some error

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