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Three-dimensional modeling method

A technology of three-dimensional modeling and programming, applied in the direction of additive manufacturing, improvement of process efficiency, energy efficiency, etc., can solve problems such as lack of disclosure and enlightenment, and achieve the effect of avoiding defective products

Active Publication Date: 2019-02-12
MATSUURA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, there is nothing disclosed or suggested in the prior art regarding the appropriate utilization of technical matters related to the reflection of such light in methods of three-dimensional modeling

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0114] Embodiment 1 is characterized in that the cause of poor sintering is corrected, and for the entire sintered area including the sintered position indicated by procedure c, or the entire sintered area and the entire sintered area already stacked on the lower side of the area, by After the laser beam or electron beam is melted or softened, only the thickness amount of the melted or softened region or the thickness amount of the sintered and laminated sintered region is removed, or after all the above-mentioned sintered regions are removed by a cutting tool, the The layering step and the sintering step are repeated for the removed area.

[0115] To explain the technical gist of Example 1, even if the position and its vicinity causing poor sintering indicated by procedure c are melted and removed by laser beam or electron beam, in the case of lamination and sintering again for this area, it is necessary to Image analysis is performed on the melted and removed regions, and la...

Embodiment 2

[0120] The second embodiment is characterized in that sintering abnormality is notified by a light signal and / or an audio signal when the program c is instructed.

[0121] With such a feature, poor sintering can be quickly dealt with.

[0122] In particular, when a different color light signal or a different sound is selected due to any one of A and B according to poor sintering, the cause of poor sintering can be quickly grasped and dealt with.

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Abstract

The invention provides a three-dimensional modeling method of three-dimensional modeled articles according to the research project, and the three-dimensional modeling method can fast detect sinteringbadness to prevent generation of defects. The method includes a forming step of a powder layer and a sintering step sintering the powder layer through a laser beam or an electron beam. Due to the below operation, the above research project can be achieved; a program a, the reflecting intensity of the laser beam or the electron beam irradiated in each sintering step or the reflecting intensity of light except the laser beam is measured; a program b, under the condition of detecting that the reflecting intensity of the program a is within a reference range in unit time, it is indicated that sintering of next unit time or the later powder layer forming step continues to be performed; and a program c, under the condition of detecting that the reflecting intensity of the program a deviates fromthe reference range in the unit time, it is judged that sintering badness happens, and it is indicated that sintering in the next unit time or the later powder layer forming step is suspended.

Description

technical field [0001] The present invention relates to a method of manufacturing a three-dimensional shaped object based on a lamination process in which a step of forming a powder layer and a step of sintering the powder layer with a laser beam or an electron beam are repeated. Background technique [0002] In the above-mentioned three-dimensional modeling method, the sintering defects caused by the following A and B cannot be completely prevented. [0003] A. Due to the abnormality of the control system related to laser beams or electron beams, the supplied beams are excessive or insufficient, so that the sintered surface is not flat and roughly regular irregularities are formed compared with the normal supply of each beam, [0004] B. When the powder layer supplied by the powder supply device is formed, the movement of the scraper becomes difficult due to the formation of the unevenness of the above-mentioned A or the mixing of debris, which hinders the realization of a ...

Claims

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Application Information

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IPC IPC(8): B22F3/105
CPCB33Y10/00B22F10/00B22F12/90B22F10/28B22F12/44B22F10/36B22F12/49B22F12/60Y02P10/25
Inventor 天谷浩一石本孝介山田岳志
Owner MATSUURA MACHINERY
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