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Metal SLM printing system based on Gaussian light beam and light beam shaping composite beam

A Gaussian beam and printing system technology, applied in the direction of improving energy efficiency, process efficiency, additive manufacturing, etc., can solve problems such as limiting the performance of anti-Gaussian optical products, splashing, etc., to improve energy utilization, increase filling speed, The effect of expanding the application field

Pending Publication Date: 2021-11-12
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, anti-Gaussian light (ring light) has many defects (splashes and pores), which limits the product performance of anti-Gaussian light products

Method used

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  • Metal SLM printing system based on Gaussian light beam and light beam shaping composite beam
  • Metal SLM printing system based on Gaussian light beam and light beam shaping composite beam
  • Metal SLM printing system based on Gaussian light beam and light beam shaping composite beam

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Such as figure 1 , 6 , 7, 8, and 9, the composite beam metal SLM printing system based on dual light source beam shaping provided by this specific embodiment includes a Gaussian beam metal SLM printing system, a ring beam shaping system, a beam shaper 12, and a beam coupler 14 , the second Gaussian light emitting unit and four linear modules, preferably, the linear module can choose a model PKH40 ball screw linear module from Chengdu Panyan Machinery Co., Ltd.

[0047] The Gaussian beam metal SLM printing system includes a first Gaussian light emitting unit, a printing unit and a working platform 19. The first Gaussian light emitting unit includes a first laser and first lasers arranged in sequence along the propagation direction of the Gaussian beam emitted by the first laser 1. A collimator 2 , a first half-wave plate 3 , a first polarizer 4 and a first variable magnification beam expander 5 , and the printing unit includes a fifth total reflection mirror 16 , a vibr...

Embodiment 2

[0078] Such as Figure 2 to Figure 9 As shown, the composite beam metal SLM printing system based on the Gaussian beam of a single light source provided in Embodiment 2 includes a Gaussian beam metal SLM printing system, a first total reflection mirror 6, a first beam splitter mirror 7, and a second beam splitter mirror 13 , ring beam shaping system, beam coupler 14, beam shaper 12, third total reflection mirror 11 and four linear modules.

[0079] The Gaussian beam metal SLM printing system includes a first Gaussian light emitting unit, a printing unit and a working platform. The first Gaussian light emitting unit includes a first laser 1 and first quasi-lights arranged in sequence along the propagation direction of the Gaussian beam emitted by the first laser 1. Straightener 2, first half-wave plate 3, first polarizer 4 and first variable magnification beam expander 5, the printing unit includes fifth total reflection mirror 16, galvanometer system 17 and field lens 18.

[...

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Abstract

The invention discloses a composite light beam metal SLM printing system based on Gaussian light beam and light beam shaping and a dual-light-source composite light beam metal SLM printing system. The dual-light-source composite light beam metal SLM printing system comprises a light beam shaper, a light beam coupler and a Gaussian light beam metal SLM printing system, and the light beam shaper and the light beam coupler are sequentially arranged between a first variable magnification speed expanding mirror and a fifth total reflection mirror. A second Gaussian light emitting unit is arranged in the vertical direction of the light beam coupler and comprises a second laser, and a second collimator, a second half-wave plate, a second polarizer and a second variable magnification beam expander which are sequentially arranged in the propagation direction of Gaussian beams emitted by the second laser. The invention further provides a single-light-source composite light beam metal SLM printing system. The system can use a single light source and double light sources to freely combine Gaussian light, annular light and flat-top light, different light paths are freely switched on the basis of the light beam shaping technology, the printing speed, efficiency and quality of parts are improved, and application and popularization of the SLM technology are promoted.

Description

technical field [0001] The invention relates to the field of optical fiber laser beam shaping, in particular to a composite beam metal SLM printing system based on Gaussian beams and beam shaping. Background technique [0002] As one of the main technologies of 3D printing, selective laser melting (SLM) has received widespread attention and application, but it also faces many difficulties in the process of practical application and promotion, such as defects such as pores, cracks, and incompletely fused particles during the printing process. Problems such as lack of mechanism analysis, anisotropy of deformation and structure properties, and complex heat treatment process after printing still restrict the application of powder-spreading SLM technology, making this technology unable to completely replace traditional manufacturing methods. At present, the light source used for metal SLM printing is basically a Gaussian distributed laser. The central area requires a large laser ...

Claims

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Application Information

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IPC IPC(8): B22F12/41B22F12/45B22F10/36B22F10/28B33Y30/00B33Y10/00
CPCB22F12/41B22F12/45B22F10/36B22F10/28B33Y30/00B33Y10/00Y02P10/25
Inventor 龙雨纪昌豪郭兴张晶周莉丽谢文明劳善源
Owner GUANGXI UNIV
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