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Simultaneous 9-Axis-Laser-Processing

[+] Author Affiliations
John Flemmer, Edgar Willenborg

Fraunhofer Institute for Laser Technology, ILT, Aachen, Germany

Paper No. MSEC2015-9242, pp. V001T02A014; 6 pages
  • ASME 2015 International Manufacturing Science and Engineering Conference
  • Volume 1: Processing
  • Charlotte, North Carolina, USA, June 8–12, 2015
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5682-6
  • Copyright © 2015 by ASME


In many laser applications laser scanners are used for a fast laser beam deflection. Providing a deflection in up to three Cartesian directions they are able to position the laser beam focus with over 10 m/s at accelerations even above 1000 g. Nevertheless for the treatment of complex shaped parts, these scanning systems often need to be combined with a conventional mechanical axis system. This is because a laser scanner is not able to manipulate the direction of beam incidence and therefore the accessibility to all areas cannot be ensured. Through rotational mechanical axes this direction can be manipulated. Furthermore the working volume of a laser scanner is limited in general. State of the art is the sequentially processing of larger or curved areas by dividing them into subareas. Therefore multiple subareas, processed by the laser scanner, are positioned next to each other by means of the mechanical system. In the overlapping areas this can lead to unwanted defects induced by the process itself or by positional errors. In contrast simultaneous processing is an approach to avoid the segmentation of areas into subareas in general. This will lead to more homogenous processed surfaces and reduces the time for repositioning. In this case the laser scanner and the mechanical system are in motion at the same time. The main challenge in simultaneous processing is the kinematic transformation and the synchronization between both systems. For a productive use this method also needs to be integrated flawlessly in the existing process chain. For accommodating these challenges the Fraunhofer ILT developed a solution which is almost fully software based and can be integrated in the existing process chain with little effort.

Copyright © 2015 by ASME
Topics: Lasers



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