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

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

Active Publication Date: 2019-09-17
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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AI Technical Summary

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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  • 3D printing scraper integrated device and method for improving workpiece forming quality
  • 3D printing scraper integrated device and method for improving workpiece forming quality
  • 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 by the energy source layer by layer 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

The invention provides a 3D printing scraper integrated device and method for improving the workpiece forming quality. A output shaft of a driving servo motor is connected with a double-output planetary reducer, two output ends of the double-output planetary reducer are both connected with scraper moving devices, a scraper is fixed on two scraper fixing plates, and the scraper moving devices drive the scraper fixing plates so as to drive the scraper to move forward and backward in the powder spreading direction; the scraper is internally provided with a stress sensor array which is used for monitoring the stress condition in the scraper powder spreading process in real time, and transmitting measured data to a controller; and the controller judges whether stress value fluctuation failing to meet the preset condition occurs or not according to the measured data, and if the stress value fluctuation failing to meet the preset condition does not occur, the current operation continues to be executed; otherwise, the scraper is controlled to stop moving, the controller is used for controlling an adjusting device to lift the position of the scraper in the vertical direction according to the measured data, and the scraper is controlled to return to the initial powder spreading position to perform powder spreading printing operation again, so that the high-quality forming of parts is realized.

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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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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