SLM powder paving scraper with vibration function
A scraper and powder spreading technology, applied in the directions of improving energy efficiency, process efficiency, additive processing, etc., can solve the problems of destroying the powder spreading plane and powder falling from the interlayer of the scraper, so as to reduce the powder falling and protect the flatness. , to ensure the effect of forming accuracy
Inactive Publication Date: 2018-06-29
四川省有色冶金研究院有限公司
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Problems solved by technology
In actual work, when using a scraper to spread powder, local defects will appear on the formed workpiece. The reason is that powder accumulation is formed during the return process of the scraper. As the accumulated powder gradually increases, the interlayer of the scraper will adhere to the powder and spread again. Powder falls during powdering, destroying the powdering plane
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Embodiment
[0012] Embodiment: An SLM powder spreading scraper with integrated vibration function, including a scraper body 1, the scraper body 1 is composed of a mounting section and a powder scraping section, and the bottom side of the powder scraping section is chamfered on one side facing the powder shaped inclined pilot surface 2, and at least one active vibrator 3 is fixedly installed on the scraper body 1.
[0013] When working, the installation section of the scraper body 1 is fixedly installed on the powder scraping driving device, and the powder scraping driving device drives its reciprocating motion to realize powder scraping, and the vibration frequency is controlled externally to achieve a certain vibration in the process of preparing powder, so that The adhered powder is detached, the powder falling during the powder spreading process is greatly reduced, the flatness of the powder spreading surface is protected, and the forming accuracy of the formed workpiece is effectively ...
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The invention discloses a SLM powder paving scraper with a vibration function. The SLM powder paving scraper comprises a scraper body; the scraper body consists of a mounting section and a powder scraping section; the side edge, towards a granular material, of the lower side of the powder scraping section forms a chamfered inclined pilot surface; and at least one source vibrator is fixedly mountedon the scraper body. As several source vibrators are mounted on the scraper, a certain vibration is generated in the powder paving preparation process through external control of the vibration frequency, attached powder is deviated, the powder falling in the powder paving process is greatly reduced, the flatness of the powder paving surface is protected, and the molding precision of formed workpieces is effectively guaranteed.
Description
technical field [0001] The invention relates to the technical field of rapid prototyping, in particular to an SLM powder spreading scraper with an integrated vibration function. Background technique [0002] Selective laser melting (SLM) is a method of rapid prototyping technology. This technology is based on the additive manufacturing method of layer-by-layer cladding. The parts are directly formed according to the three-dimensional model. The powder is completely melted during the forming process to form a metallurgical bond. The ability to form special-shaped metal parts with complex shapes and structures is the main feature of the application of laser rapid prototyping technology. In actual work, when using a scraper to spread powder, local defects will appear on the formed workpiece. The reason is that powder accumulation is formed during the return process of the scraper. As the accumulated powder gradually increases, the interlayer of the scraper will adhere to the po...
Claims
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IPC IPC(8): B22F3/105B33Y30/00
CPCB22F3/105B33Y30/00Y02P10/25
Inventor 丁睿谦张国军朱冬贾元波伍建军
Owner 四川省有色冶金研究院有限公司