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In-process monitoring in laser solidification apparatus

A technology of laser curing and equipment, which is applied in the direction of metal processing equipment, process efficiency improvement, solid material additive processing, etc., and can solve problems such as complexity, difficulty in changing measurement devices, and damage to optical modules

Active Publication Date: 2020-08-04
RENISHAW PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem with such systems is that the measurement setup needs to be aligned on-site with the laser beam, and changing the measurement setup is difficult and very complicated, often requiring the operator to destroy the laser-safe housing of the optical module

Method used

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  • In-process monitoring in laser solidification apparatus
  • In-process monitoring in laser solidification apparatus
  • In-process monitoring in laser solidification apparatus

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Embodiment Construction

[0031] refer to Figure 1 to Figure 3 , The additive manufacturing apparatus according to an embodiment of the present invention includes a build chamber 101 having a top plate 115 providing a surface on which powder can be deposited, and a build sleeve 117 in which the build platform 102 is movable. Build sleeve 117 and build platform 102 define build volume 116 in which object 103 is built from selective laser melting powder 104 . Build platform 102 supports object 103 and powder bed 104 during building. As successive layers of workpiece 103 are formed, platform 102 is lowered within build sleeve 117 under the control of motor 119 .

[0032] When the workpiece 103 is built by lowering the platform 102 and spreading the powder dispensed from the dispensing device 108 using the wiper 109, a powder layer is formed. For example, the dispensing device 108 may be a device as described in WO 2010 / 007396.

[0033] At least one laser module (laser module 105 in this embodiment) ge...

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PUM

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Abstract

The invention concerns a laser solidification apparatus for building objects by layerwise solidification of material. The laser solidification apparatus comprises a build platform (102) for supportingthe object (103) and a material bed (104), an optical module (157) comprising a movable guiding element (150) for directing the laser beam (118) to solidify material of the material bed (104), and adetector module (160) comprising a sensor (161) for detecting radiation emitted from the material bed (104) and transmitted to the sensor (161) by the movable guiding element (150) of the optical module (157). The detector module (160) is removably mounted to the optical module (157).

Description

technical field [0001] The present invention relates to devices and methods for in-process monitoring in laser curing equipment, in particular to devices and methods for capturing sensor data collected by optical components of optical scanners of laser curing equipment such as powder bed fusion equipment . Background technique [0002] Laser solidification equipment produces parts through the layer-by-layer solidification of flowable materials. Various laser curing methods exist, including material bed systems such as selective laser melting (SLM), selective laser sintering (SLS), and stereolithography systems. [0003] In selective laser melting, a powder layer is deposited on a powder bed in a build chamber, and the part of the powder layer corresponding to the cross-section (section plane) of the object being built is scanned with a laser beam. The laser beam melts or sinters the powder to form a solidified layer. Following selective curing of the layer, the powder bed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/129B29C64/124B29C64/153B29C64/25B29C64/268B22F3/105
CPCB33Y30/00B33Y50/00B29C64/124B29C64/129B29C64/153B29C64/25B29C64/268B33Y50/02Y02P10/25B22F10/28B22F12/49B22F10/36B22F12/38B22F12/41B22F12/44B22F12/90B29C64/393B29C64/286
Inventor 约翰·黛尔迪丝J·S·加勒德C·希利
Owner RENISHAW PLC