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Device and method for the production of a three-dimensional object

A technology of three-dimensional objects and control devices, which is applied in processing and manufacturing, solid material additive processing, additive processing, etc., can solve the problems of deviation in measurement results, high price of infrared cameras, and pollution of the optical system of infrared cameras, etc., to reduce risk of damage, simple price, effect of accurate control and/or regulation

Inactive Publication Date: 2007-06-06
EOS ELECTRO OPTICAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One of the problems is that in this setup the optics of the infrared camera can get contaminated
This contamination, which cannot be completely avoided by blowing air, leads to possible deviations in the measurement results depending on the location
Another disadvantage of this temperature measurement is the high price of the infrared camera compared to other non-contact temperature measuring instruments such as a pyrometer

Method used

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  • Device and method for the production of a three-dimensional object
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  • Device and method for the production of a three-dimensional object

Examples

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Embodiment Construction

[0017] Fig. 1 shows a laser sintering apparatus as an embodiment of the apparatus according to the present invention. The laser sintering device has a container 1 that opens upward. A support 2 for supporting the object to be formed is provided in the container 1. The support 2 can be moved up and down in the vertical direction A in the container 1 by means of a drive device 4. The upper edge of the container 1 defines a working plane 5. A radiation device 6 in the form of a laser is arranged above the working plane 5, which emits a directional laser beam 18 which is deflected onto the working plane 5 by a deflection device 7. In addition, an applicator 8 is provided for applying a layer of powdered construction material to be consolidated onto the surface of the support 2 or the last layer that has been consolidated. The applicator 8 can be moved back and forth on the working plane 5 by means of a drive device indicated by the arrow B. The applicator is supplied by two powder sto...

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Abstract

Disclosed are a device and a method for producing three-dimensional objects (3) by locally solidifying layers of a structural material at the points corresponding to the respective cross-section of the object (3) under the effect of electromagnetic or corpuscular radiation. The inventive device comprises a temperature measuring apparatus (13) for the contactless measurement of the temperature of the structural material in a measuring area (14) that is a subarea of the layer of the structural material as well as a position adjusting mechanism (15) for modifying the position of the measuring area (14) of the temperature measuring apparatus (13) regardless of the change in position of the zone upon which the radiant energy acts. Said device allows a non-illuminated area of the surface to be actively triggered for measuring the temperature of each layer while making it possible to detect a temperature distribution by modifying the position of the measuring area (14) in a layer.

Description

Technical field [0001] The invention relates to a device and method for manufacturing three-dimensional objects according to the preambles of claims 1 and 10. Background technique [0002] A device of this type and a method of this type are known from DE 100 07 711 C1. There is described a laser sintering device in which the temperature of the sintered powder is detected by a pyrometer on a moving detection surface in the area of ​​the sintering position, and the power of the laser is adjusted according to the detected temperature. [0003] Among them, the temperature measured by the pyrometer is decisively affected by the heat radiation at the sintering position. According to the different exposure degrees of the powder, the radiation capacity of the surface (the ratio of the radiation energy radiated from the surface to the radiation energy radiated from a black object at the same temperature) changes, and the measurement results are biased. In addition, temperature measurement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00B29C35/02
CPCB29C67/0077B29C35/0288B29C64/153B33Y10/00B33Y30/00Y02P10/25
Inventor J·菲利皮T·哈尔德T·马特斯
Owner EOS ELECTRO OPTICAL SYST
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