A 3D printing scraper integrated device and method for improving workpiece forming quality

A 3D printing and forming quality technology, applied in the field of additive manufacturing, can solve the problems of local protrusion accumulation on the forming plane of parts, printing failure of parts, etc., and achieve the effect of improving the possibility and the forming quality of workpieces

Active Publication Date: 2021-07-13
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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Problems solved by technology

[0004] The technical solution of the present invention is to provide an integrated device and method for uniform powder coating of 3D printing scraper equipment that can improve the forming quality of workpieces, and solve the problem of part printing failure caused by the accumulation of local protrusions on the forming plane of parts

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  • A 3D printing scraper integrated device and method for improving workpiece forming quality
  • A 3D printing scraper integrated device and method for improving workpiece forming quality
  • A 3D printing scraper integrated device and method for improving workpiece forming quality

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0036] The following will combine figure 1 , 2 , 3, 4, 5, 6 further describe in detail the 3D printing scraper integration device and method for improving the forming quality of workpieces of the present invention.

[0037] In order to solve the problem that in the process of 3D printing, the splashes are sintered layer by layer by the energy source to form local protrusions, and the local protrusions accumulate layer by layer. In severe cases, the rubber strip of the scraper falls off, which directly leads to the failure of part forming. The solution of the present invention is simple, practical and reliable, and provides a 3D printing scraper integrated device and method for improving the forming quality of workpieces, which can realize high-quality forming of workpieces.

[0038] figure 1 , 2It is a general diagram and cross-sectional view of a 3D...

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Abstract

A 3D printing scraper integration device and method for improving the forming quality of workpieces. The output shaft of the drive servo motor is connected to a double-output planetary reducer, and the two output ends of the double-output planetary reducer are respectively connected to a scraper moving device, and the scraper is fixed on two scrapers. On the fixed plate, the scraper moving device drives the scraper fixed plate and then drives the scraper to move back and forth in the powder spreading direction; the scraper contains a stress sensor array, which is used to monitor the force of the scraper during the powder spreading process in real time and transmit the measurement data to the controller; the controller judges whether there is a stress value fluctuation that does not meet the preset conditions according to the measurement data. Position in the vertical direction, and control the scraper to return to the initial powder laying position to perform the powder laying and printing operation again, so as to achieve high-quality forming of parts.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to an integrated device and method for realizing uniform powder spreading of 3D printing scraper equipment for improving the forming quality of workpieces. Background technique [0002] In the field of 3D printing, local protrusions often appear in the part printing process test process, and the local protrusions accumulate layer by layer, which will have a great impact on the rubber strip of the scraper. In severe cases, the rubber strip of the scraper will fall off, which directly leads to the failure of part forming. There are many reasons for the occurrence of local protrusions, such as spatter generated during the sintering of metal powder, fine impurities in the metal powder, small disturbances in the molten pool, and small displacements of formed parts. [0003] At present, the scraper design of 3D printing equipment on the market is relatively simple. When local protrus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y30/00
CPCB33Y30/00B22F10/00B22F12/90B22F10/28B22F12/67B22F10/32B22F12/224Y02P10/25
Inventor 王飞李鹏孙靖丘廉芳柳玉文赵维刚杨洋
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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