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Method and device for controlling irradiation system for producing workpieces

A technology for irradiating workpieces, which is applied in the field of control irradiation systems, can solve problems such as workpiece quality defects, affecting workpiece structure, uneven manufacturing workpieces, etc., and achieve the effect of improving uniformity

Active Publication Date: 2019-11-19
SLM SOLUTIONS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the present inventors have realized that irradiating with different irradiating units can lead to non-uniformity in the manufactured workpiece
This inhomogeneity primarily affects the structure of the workpiece and causes significant quality defects in the manufactured workpiece

Method used

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  • Method and device for controlling irradiation system for producing workpieces
  • Method and device for controlling irradiation system for producing workpieces
  • Method and device for controlling irradiation system for producing workpieces

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Embodiment Construction

[0073] figure 1 Shown is a device 10 configured to implement a method according to the invention for the additive manufacturing of a three-dimensional workpiece by means of a metal powder bed. More precisely, the method involves a manufacturing process by means of so-called selective laser melting (SLM). Apparatus 10 includes a processing chamber 12 . The processing chamber 12 is sealed from the surrounding environment, so that an inert gas atmosphere can be established therein. A powder application device 14 arranged in the processing chamber 12 applies a layer of raw powder onto a carrier 16 . Such as figure 1 As indicated by the middle arrow A, the carrier 16 is adapted to be movable in the vertical direction. Therefore, when the workpiece is built layer by layer from the selectively solidified raw material powder layer, the carrier can decrease in height in the vertical direction as the workpiece build height increases.

[0074] The apparatus 10 further includes an ...

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PUM

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Abstract

The invention relates to a method for controlling an irradiation system (20), the irradiation system (20) being used in a device (10) for the additive manufacturing of three-dimensional workpieces andcomprising at least three irradiation units (22a-d, 50), the method comprising the following steps: a) defining an irradiation region (30a-d) for each of the irradiation units (22a-d, 50), the irradiation regions (30a-d) each comprising a portion of an irradiation plane (28) which extends parallel to a support (16) of the device (10), and the irradiation regions (30a-d) being defined such that they overlap in a common overlap region (34); b) irradiating a raw material powder layer on the support (16) to produce a workpiece layer; c) arranging a further raw material powder layer on the alreadyjetted raw material powder layer to produce a further workpiece layer. d) The invention also relates to a device for performing the method.

Description

technical field [0001] The invention relates to a device and a method for controlling an irradiation system for the additive manufacturing of three-dimensional workpieces. The irradiation system comprises at least three irradiation units with overlapping irradiation areas. Background technique [0002] In additive methods for the manufacture of three-dimensional workpieces, in particular in additive layer-by-layer building methods, the initially amorphous or shape-neutral molding material (e.g. raw material powder) is cured by irradiation at specific locations and thus The material reaches the desired shape. Irradiation is effected by electromagnetic radiation, for example in the form of laser radiation. In the initial state, the molding material can initially be in the form of granules, powder or liquid molding material and can be cured selectively, or in other words specific locations, by irradiation. The molding compound may comprise, for example, ceramic, metallic or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y50/02B29C64/153B29C64/277
CPCB22F2999/00B33Y30/00B33Y50/02B29C64/153B29C64/277B33Y10/00Y02P10/25B22F12/49B22F10/366B22F10/28B22F12/45B22F2203/03B22F2202/11B22F3/105B22F10/00B29C64/393
Inventor 安德里亚斯·维斯纳简·威尔克斯克里斯蒂亚娜·蒂尔卢卡斯·勒斯根
Owner SLM SOLUTIONS GRP