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Laser processing device and method

A technology of laser processing and laser beam, which is applied in the direction of additive processing, additive manufacturing, process efficiency improvement, etc., can solve the problems of not having rich and diverse color metal materials to choose from, cracking, etc., and achieve shortened coloring cycle and high strength , The effect of improving processing efficiency

Active Publication Date: 2019-11-05
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a laser processing device and its method, to obtain colored metal prints, to solve the problem that there are no abundant metal materials with multiple colors to choose from, and to solve t

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  • Laser processing device and method

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[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] The invention is a laser processing device and method. The invention is aimed at selective laser sintering of metal materials. The metal powder is sprayed into the powder chamber through the powder nozzle, and the compaction and uniform distribution of the powder in the powder chamber are realized by the reciprocating horizontal rolling of the pressing roller. ;The laser beam is reflected by the movable 45° mirror to the two-dimensional scanning galvanometer, and the laser beam output by the two-dimensional scanning galvanometer scans the section track of the 3D printing model layered and sliced ​​by the main control device to complete the selection of the single layer The permanent laser sintering work accumulates layer by layer until the final complete print is obtained; the main control device controls the scanning of the thr...

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Abstract

The invention discloses a laser processing device and method for selective laser sintering of metal materials. Metal powder is sprayed into a powder chamber through a powder nozzle, and powder is compacted and uniformly distributed in the powder chamber through reciprocating and horizontal rolling of a pressure roller; laser beams are reflected to a two-dimensional scanning galvanometer through amovable 45-degree reflecting mirror, laser beams output by the two-dimensional scanning galvanometer scan a layered sliced section track of a 3D printing model through a main control device, and sintering is conducted layer by layer for accumulation until a final complete printout is obtained; the main control device controls a three-dimensional scanning galvanometer and a motor to rotate, so thatthe defocusing amount of the laser beams irradiated at all the points of the surface of the printout is unchanged; and laser irradiation of the whole surface of the printout is completed in a set track, the whole surface of the printout is colored, any pigment does not need to be added, and coloring is conducted through laser directly. Through online surface irradiation of a metal material selective laser sintering formed part, integral metal material colored 3D printing is achieved.

Description

technical field [0001] The invention relates to a laser processing device and a method thereof, belonging to the technical field of color 3D printing of metal materials. Background technique [0002] The laser has good directionality, monochromaticity, coherence and high brightness, and the laser beam is easy to transmit. At the same time, the heat-affected zone and thermal deformation are small during laser processing, which is non-contact and easy to automate. Therefore, the research and application of laser processing has been widely concerned. [0003] 3D printing is an emerging molding technology, the core of which is to convert the complex 3D shape of the required molded workpiece into a combination of simple 2D sections through slicing. According to the computer-aided design model of the workpiece, through the 3D printing equipment, along the height The material is deposited layer by layer in the direction to form a series of 2D cross-sectional thin slices of the wor...

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Application Information

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IPC IPC(8): B22F3/105
CPCB22F3/105B22F10/00B22F10/36B22F12/49B22F12/53B22F12/33B22F10/366B22F10/28B22F12/41B22F12/44B22F12/43B22F12/37B22F12/63Y02P10/25
Inventor 高文焱王军龙李本海李广李凯冯巧玲侯振兴张路
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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