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Method and device for the layered production of a three-dimensional object from a powdery material

A technology of three-dimensional objects and powder materials, which is applied in the directions of manufacturing auxiliary devices, processing and manufacturing, and manufacturing tools to achieve the effect of reducing costs

Active Publication Date: 2010-09-22
EOS ELECTRO OPTICAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires a special coating device

Method used

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  • Method and device for the layered production of a three-dimensional object from a powdery material
  • Method and device for the layered production of a three-dimensional object from a powdery material
  • Method and device for the layered production of a three-dimensional object from a powdery material

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Embodiment Construction

[0020] figure 1 The shown laser sintering device has an upwardly open container 1 with a vertically movable support 2 which supports an object 3 to be formed and delimits a building area. The support 2 is arranged vertically such that the respective layer of the object to be solidified is located in the working plane 4 . Furthermore, a coating machine 5 is provided for applying a powdery structural material 3 a curable by electromagnetic radiation. The coating machine 5 is supplied with structural material 3 a from a storage container 6 . The device also has a laser 7 which generates a laser beam 7 a which is deflected by a deflection device 8 onto an input window 9 through which it enters the processing chamber 10 and is focused on a predetermined point in the working plane 4 .

[0021] A control unit 11 is also provided, by means of which the individual components of the device are controlled in a coordinated manner in order to carry out the manufacturing process.

[0022...

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Abstract

The invention relates to a method for producing a three-dimensional object by selectively compacting layers of a powdery material (3a) in the areas corresponding to the cross-section of the object (3) in the respective layer, by applying electromagnetic radiation (7a). The powder used is a plastic powder, preferably polyamide. After the production of the object, the non-compacted powder (3a') is subjected to a water or vapour treatment at a higher temperature, is subsequently dried and then is used again to produce a new object.

Description

technical field [0001] The invention relates to a method and a device for the layered production of three-dimensional objects from powder materials. In particular, the invention relates to a method for selective laser sintering, hereinafter referred to simply as "laser sintering method", and a laser sintering device, with which it is possible to economically and environmentally Plastic powders make three-dimensional objects. Background technique [0002] A laser sintering method and a laser sintering device according to claims 1 and the preamble of claim 9 are known, for example, from DE 101 05 504 A1. In this method, in particular plastic powders, such as polyamide, are used. Particularly suitable, as described in EP 0911142, is a polyamide 12 with a melting point of 185-189° C., an enthalpy of fusion of 112±17 kJ / mol and a solidification temperature of 138-143° C. The average particle size of the powder is 50-150 μm. [0003] In this known method, a defined amount of r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
CPCB29C67/0096B29C67/0077B29B17/0005Y02W30/62Y10T428/2982B33Y30/00B33Y70/00B33Y40/00B29C64/153B29C64/35B33Y10/00B29C64/357B29C64/268B29K2077/00
Inventor A·普菲斯特M·格施
Owner EOS ELECTRO OPTICAL SYST
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