Method and device for improving part precision of surface forming additive manufacturing system

A technology of additive manufacturing and surface forming, which is applied in the field of surface forming additive manufacturing system to improve the accuracy of parts, to achieve the effects of eliminating sawtooth effect, good XY surface quality, and improving shape

Inactive Publication Date: 2017-04-26
SUZHOU RES INST SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method and device for improving the accuracy of parts in the surface forming additive manufacturing system, so as to overcome the deficiencies in the prior art

Method used

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  • Method and device for improving part precision of surface forming additive manufacturing system
  • Method and device for improving part precision of surface forming additive manufacturing system
  • Method and device for improving part precision of surface forming additive manufacturing system

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Embodiment Construction

[0056] The technical scheme of the present invention will be described in detail below in conjunction with accompanying drawing:

[0057] Such as Figure 4 As shown, the hardware structure on which the present invention relies includes a part forming platform 1 , resin liquid 2 , resin tank 3 , support 4 , projector 5 , electromechanical control board 6 , and linear slide table 7 .

[0058] The projector 5 is connected with the electromechanical control board 6, the electromechanical control board 6 is connected with the linear sliding table 7, the bottom end of the linear sliding table 7 is connected with the support 4, the resin tank 3 is fixed on the support 4, and the resin tank 3 is provided with a resin The part forming platform 1 is arranged above the liquid 2 and the resin liquid 2, and the part forming platform 1 is connected with the upper part of the linear slide table 7. Both the projector 5 and the electromechanical control board 6 and between the electromechanic...

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Abstract

The invention discloses a method and a device for improving part precision of a surface forming additive manufacturing system. The method comprises the following steps: step 1): carrying out slicing treatment on a digital geometric model of a part supporting structure according to a given layer thickness z, and generating a corresponding mask image according to obtained two-dimensional layer-surface information; step 2): carrying out scanning conversion; step 3): obtaining a grey mask image through a grey calculating method based on Gaussian distribution; and step 4): generating an image. Compared with a conventional way of carrying out surface forming processing by adopting a binary mask image, the method disclosed by the invention is the grey calculating method based on Gaussian distribution, and can be used for quickly and efficiently obtaining the grey mask image which meets requirements; the adopted grey mask image can remarkably improve shape and dimension precision of processed parts on the premise of not changing a resolution rate of project hardware; and meanwhile, saw-tooth effect in the XY direction is obviously eliminated, so that better XY surface quality is brought.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method and device for improving the accuracy of parts in a surface forming additive manufacturing system. Background technique [0002] Additive manufacturing is an emerging manufacturing method that integrates various technologies such as digital manufacturing, advanced materials, and information networks. It is different from cutting and forging in traditional manufacturing processes. Additive manufacturing is to manufacture physical objects by adding materials. thing. It has broad application prospects in many fields, such as industrial product concept design, rapid mold manufacturing, medical applications and so on. The surface molding manufacturing process is a projection-based additive manufacturing process. This process uses the dynamic mask image generated by the digital micromirror DMD to replace the laser point moving in the XY direction to irradiate a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/129B29C64/264B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00
Inventor 胡天亮闫鑫张承瑞张德辉
Owner SUZHOU RES INST SHANDONG UNIV
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