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Intelligent scraper device for laser selective melting SLM

A technology of laser selective melting and scraper device, applied in the field of additive manufacturing, can solve the problems of prominent melting point, uneven powder, affecting the quality of the formed workpiece, etc.

Pending Publication Date: 2020-10-30
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of laser selective melting molding, the quality of powder laying is one of the key factors affecting the quality of molding. In addition, the surface of the forming area is often attached with splashed droplets or irregular lines, uneven powder, prominent melting point, etc. have occurred, which will seriously affect the quality of the formed workpiece

Method used

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  • Intelligent scraper device for laser selective melting SLM
  • Intelligent scraper device for laser selective melting SLM
  • Intelligent scraper device for laser selective melting SLM

Examples

Experimental program
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Effect test

Embodiment

[0033] When the powder-spreading rubber strip encounters workpiece protrusions or uneven powder and deforms during the powder-spreading process, the piezoelectric sheet will generate a piezoelectric signal, and the structure of the inner core of the scraper can better transmit the deformation of the rubber-spreading strip to the The piezoelectric sheet makes the piezoelectric signal more sensitive; moreover, each piezoelectric sheet can output piezoelectric signals at different positions relatively independently. Level, the output piezoelectric signals on both sides of the scraper are inconsistent. The invention can fine-tune the level of the scraper by adjusting the nut, so as to accurately monitor the quality of powder spreading and the surface quality of parts during the molding process, and accurately control the levelness of the powder spreading scraper.

[0034] like Figure 1-Figure 6 As shown, this solution provides an intelligent scraper device for selective laser mel...

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Abstract

The invention provides an intelligent scraper device for laser selective melting SLM and belong to the field of additive manufacturing. The intelligent scraper device comprises a scraper inner core, an adjusting rack body and a powder paving rubber strip. A plurality of fixed holes are formed in the adjusting rack body, the scraper inner core is fixed in the adjusting rack body through the fixed holes, a I-shaped groove is formed in the lower side of the scraper inner core, and the upper part of the powder paving rubber strip is clamped and fixed to the lower side of the scraper inner core through the I-shaped groove. According to the design, the intelligent scraper device solves the problem that the powder paving quality and the surface quality of a part in a forming process cannot be monitored precisely in the prior art and the problem that the levelness of the powder paving scraper cannot be controlled precisely.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to an intelligent scraper device for selective laser melting of SLM. Background technique [0002] Selective laser melting technology (SLM technology) is a widely used technology in the field of additive manufacturing (3D printing). This technology directly melts metal powder by laser, accumulates metal layer by layer after solidification, and finally obtains shaped metal parts. In the process of laser selective melting molding, the quality of powder laying is one of the key factors affecting the quality of molding. In addition, the surface of the forming area is often attached with splashed droplets or irregular lines, uneven powder, prominent melting point, etc. If it happens, it will seriously affect the quality of the formed workpiece. [0003] In order to overcome the deficiencies of the above technologies, it is necessary to provide a new type of intelligent ...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y30/00B33Y50/02
CPCB33Y30/00B33Y50/02Y02P10/25
Inventor 高椿明张萍赵斌兴陈力郭云梦杨晓迪
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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