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Device, method and control unit for generative production of three-dimensional object

A three-dimensional object, control unit technology, applied in the directions of additive manufacturing, processing and manufacturing, manufacturing auxiliary devices, etc., can solve problems such as turbulence, and achieve the effect of improving the quality of components

Active Publication Date: 2018-01-02
EOS ELECTRO OPTICAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Additionally, turbulence may occur in the shielding gas flow

Method used

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  • Device, method and control unit for generative production of three-dimensional object
  • Device, method and control unit for generative production of three-dimensional object
  • Device, method and control unit for generative production of three-dimensional object

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Experimental program
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Embodiment Construction

[0051] next with the help of figure 1 A device 1 according to an embodiment of the invention is described. exist figure 1 The plant shown in is a laser sintering plant or laser melting plant 1 . For the construction of the object 2 the device comprises a treatment chamber 3 with a chamber wall 4 .

[0052] An upwardly open container 5 with a wall 6 is arranged in the treatment chamber 3 . A carriage 7 movable in the vertical direction V is arranged in said container 5, on which is mounted a bottom plate 8 which closes the container 5 downwards and thus forms the bottom of the container. The bottom plate 8 may be a plate constructed separately from the bracket 7 to which it is fixed, or the plate may be constructed integrally with the bracket 7 . as in figure 1 As shown in , depending on the powder and process used, a further build platform 9 can be mounted on the base plate 8 on which the object 2 is built. However, the object 2 can also be built on the base plate 8 itse...

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PUM

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Abstract

The present invention relates to a method for the production of a three-dimensional object (2) by way of layered solidification of a powder construction material (11) by way of electromagnetic radiation, in particular laser radiation. The method has the steps of: scanning points, which correspond to a cross section of the object (2) to be produced, of an applied layer of the powder construction material (11) with an electromagnetic beam (22) from a radiation source (21) for purposes of selectively solidifying the powder construction material (11), conducting a gas flow (33) across the appliedlayer during the scanning with the electromagnetic beam (22) and performing an irregularity determination with regard to the presence of a process irregularity with regard to at least one process parameter during the production, wherein during the scanning by way of the electromagnetic beam (22), the scanning process at at least one present point of the cross section to be solidified is interrupted on the basis of a result of the irregularity determination.

Description

technical field [0001] The invention relates to a device and a method for layer-by-layer construction of three-dimensional objects by means of generative manufacturing (also referred to as “additive manufacturing”). In particular, the invention relates to generative manufacturing processes in which three-dimensional objects are produced layer by layer from powdered metallic materials. Background technique [0002] The mentioned method is also called "selective laser sintering", "selective laser melting", "direct metal laser sintering" (direct metal laser sintering—DMLS), "rapid prototyping", "rapid processing" or "rapid manufacturing". A device for carrying out such a method is described, for example, in document DE 195 14 740 C1. According to said document, a thin layer of powdered construction material is first applied by means of an applicator and then solidified by the action of a laser beam at locations corresponding to the respective cross-section of the object. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/153B29C64/20B29C64/393B22F3/105B33Y10/00B33Y30/00B33Y50/02
CPCB33Y50/02B29C64/153Y02P10/25B22F10/28B22F10/38B22F10/322B22F10/366B22F10/85B22F10/77B22F12/41B22F12/70B22F12/90B33Y30/00B22F12/30B22F12/40B22F10/36B22F12/67B33Y10/00
Inventor R·A·多姆勒泽
Owner EOS ELECTRO OPTICAL SYST