Selective laser melting device with electromagnetic positioning powder spreading device

Abstract

The invention discloses a selective laser melting device with an electromagnetic positioning powder spreading device. The device comprises a machine frame, a powder spreading device used for laying metal powder, a laser for selectively melting the metal powder, a horizontal guide rail used for supporting the powder spreading device and a vertical driving mechanism used for driving the horizontal guide rail to move vertically, and a horizontal driving mechanism which is matched with the horizontal guide rail to drive the powder spreading device to horizontally reciprocate is arranged on the powder spreading device; the vertical driving mechanism is arranged at the two ends of the horizontal guide rail, and the longitudinal section of the vertical driving mechanism is a right triangle, a right wedge-shaped seat and a wedge-shaped seat driving assembly used for driving the left wedge-shaped seat and the right wedge-shaped seat to slide along the transverse single-degree-of-freedom direction. According to the selective laser melting device, the stability of the powder spreading device can be guaranteed, and meanwhile, the height of the powder spreading device can be accurately adjusted, so that in-situ machining is realized, the problems of low machining efficiency, large limitation and the like are avoided, and the application range is enlarged.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a selective laser melting device with an electromagnetic positioning powder spreading device. Background technique [0002] SLM: Selective laser melting (selective laser melting), is a kind of additive manufacturing technology. It is a rapid prototyping technology for metal powder. It can directly form metal parts with close to complete density and good mechanical properties. Its use is high The high-power laser beam processes and fuses a layer of metal powder into a shape. After the fusion is completed, the operating platform is lowered by a distance of one layer thickness, and continues to process the next layer of powder. This step is repeated until all the designated (selected to be processed) areas are melted and casted. Complete, just get a three-dimensional compound. The required products (parts) are accumulated through layer-by-layer processing in this way; in the prior art, the li...

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a selective laser melting device with an electromagnetic positioning powder spreading device, which can ensure the stability of the powder spreading device and realize the precise adjustment of the height of the powder spreading device. Realize in-situ processing, avoid problems such as low processing efficiency and large limitations, and increase the scope of application; at the same time, it is conducive to the vertical stability of the powder spreading device, simple structure, and convenient adjustment

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