Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for the production of a three-dimensional object

一种三维物体、物体的技术，应用在附加制造、制造工具、3D对象支撑结构等方向，能够解决依赖性强、不适于取得激光器功率长时间稳定等问题

Active Publication Date: 2010-03-10
EOS ELECTRO OPTICAL SYST
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is precisely in gas lasers, especially in CO 2 On the laser side, the following problem arises, that is, the short-time fluctuation and long-term fluctuation of the power of the laser have a strong dependence on the previous conditions of the laser operation, where the previous conditions of the laser operation are constantly changing
However, simple "closed-loop" regulation as in EP 1 705 616 A1 is not suitable for long-term stabilization of the laser power

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for the production of a three-dimensional object
  • Method for the production of a three-dimensional object
  • Method for the production of a three-dimensional object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Refer below figure 1 A laser sintering plant with laser control according to the invention is presented.

[0014] The device has a processing container 1 in which a holder 2 is arranged for supporting the object 3 to be formed. The stand 2 is vertically movable within the processing container by means of a height adjustment device 4 . The surface in which the applied powdery construction material hardens defines the working surface 5 . In order to harden the powdery material in the working surface 5, a laser 6 is provided, which is configured as a gas laser, in particular a CO 2 laser. The laser 6 generates a laser beam 7 which is focused onto the working surface 5 by deflection means 8 , for example in the form of one or more plane deflecting mirrors which can be rotated by a not shown rotation unit, and a focusing unit 9 . A control device 10 is provided which controls the deflection device 8 and, if necessary, the focusing unit 9 , so that the laser beam 7 can be...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method of manufacturing a three-dimensional object is provided, in which the object is solidified layer by layer by solidifying a building material by means of a beam of a gas laser at locations in each layer corresponding to the cross section of the object, wherein the power of the laser is measured and the power of the laser is controlled according to the measured value, characterized in thatthe power measurement takes place in a time window, in which a change of the power occurs, and an input control signal of the laser is controlled according to the measured values.

Description

technical field [0001] The invention relates to a method for producing a three-dimensional object according to the preamble of claim 1 . Background technique [0002] EP 0 758 952 B1 discloses a method for producing three-dimensional objects by means of laser sintering, wherein the position, power and / or diameter of the laser beam are measured directly at a point above the layer to be hardened, and wherein the measurement results are compared with The predefined reference values ​​are compared and based on the comparison an error display or correction of the bundle is carried out. In this method, a solid-state laser is preferably used. [0003] EP 1 705 616 A1 discloses a method according to the preamble of claim 1 . The disclosed method relates to the control of the laser power in a rapid prototyping system, such as a stereolithography system or a laser sintering system. In this rapid prototyping system, the liquid construction material in the case of stereolithography a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
CPCB29C67/0066B29C64/135B33Y10/00B33Y30/00
Inventor J·菲利皮
Owner EOS ELECTRO OPTICAL SYST