Device and method for producing a three-dimensional object layer by layer

A technology for three-dimensional objects and equipment, applied in the directions of processing and manufacturing, manufacturing tools, additive manufacturing, etc., can solve problems such as the impact on the quality of the object to be manufactured, the uneven transport of smoke and steam, and the impact on the quality of the object to be manufactured, and achieve laminar flow improvement , the effect of improving quality

Inactive Publication Date: 2016-11-16
EOS ELECTRO OPTICAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting local illumination errors can adversely affect the quality of the object to be manufactured
[0009] The occurrence of inhomogeneities and turbulences in said devices known to the Applicant lead to inhomogeneous transport of fumes, gases and / or vapors formed on the powder surface
Due to the resulting irradiation errors and turbulence in the protective gas flow which can stir up the powder to be solidified, the quality of the object to be produced can be affected

Method used

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  • Device and method for producing a three-dimensional object layer by layer
  • Device and method for producing a three-dimensional object layer by layer
  • Device and method for producing a three-dimensional object layer by layer

Examples

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Embodiment Construction

[0025] Refer below Figure 1 to Figure 5 An example of the apparatus according to the first embodiment of the present invention is described. exist figure 1 The device shown in is a laser sintering or laser melting device 1 . For forming the object 2 the device comprises a treatment chamber 3 with a chamber wall 4 .

[0026] An upwardly open container 5 with a wall 6 is provided in the treatment chamber 3 . A support 7 movable in the vertical direction V is provided in the container 5 , on which a base plate 8 is mounted, which closes the container downwards and thus forms the bottom of the container. The base plate 8 may be a plate constructed separately from the support 7 and fastened thereto, or it may be constructed integrally with the support 7 . Depending on the powder and the process used, it is also possible to mount a build platform 9 on the base plate 8 on which the object 2 is built. However, the object 2 can also be constructed on the substrate 8 itself, which...

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PUM

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Abstract

The invention relates to a device (1) for producing a three-dimensional object (2) by solidifying, layer by layer, structural material (13) at locations in the respective layer corresponding to the cross-section of the object (2) to be produced, comprising a flow device (31, 32, 34, 35) for generating a gas flow above an applied layer of the structural material (13) by means of a nozzle element (40) for introducing the gas into the device. The nozzle element (40) comprises a body (41) having a gas inlet side (44) and a gas outlet side (46), and a plurality of channels (42), which penetrate the body from the gas inlet side (44) to the gas outlet side (46), are provided with inlet openings (45) on the gas inlet side (44) and with gas outlet openings (47) on the gas outlet side (46), and which are separated by walls (43). The length of the channels (42) is selected such that a laminar flow on the gas outlet side (46) is formed therein.

Description

technical field [0001] The invention relates to a device and a method for the layer-by-layer manufacture of three-dimensional objects by solidifying construction material layer by layer at positions corresponding to cross-sections in the respective layers of the object to be manufactured. Background technique [0002] Methods for the layer-by-layer production of three-dimensional objects include, for example, selective laser sintering or laser melting. In this case, the powdered construction material is applied layer by layer and selectively cured by laser radiation. [0003] DE19649865C1 describes a method for producing shaped bodies by applying and selectively solidifying metallic material powder layer by layer in a treatment chamber. A protective gas inlet is provided on one side of the processing chamber and a protective gas outlet is provided on the other side. A layered protective gas flow is formed above the applied powder via the protective gas inlet and the protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
CPCB29C64/153B29C64/165B29C64/371Y02P10/25B22F10/28B22F12/49B22F12/70B22F12/41B22F10/322B33Y40/00B29C64/386B29C64/20B29C64/35B33Y10/00B33Y30/00B33Y50/02B23K26/144B23K26/342B22F2998/10B23K26/1476B28B1/001B28B17/0081B29K2105/251
Inventor O·尼尔希莱A·席林J·哈曼R·A·多姆勒泽D·沃尔夫T·叙韦宁K·米内特
Owner EOS ELECTRO OPTICAL SYST
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