Improving accuracy of robot-guided 3D laser surface processing by workpiece measurement in a blink

Richard Schares; Stefan Schmitt; Michael Emonts; Kai Fischer; Rüdiger Moser; Boris Frühauf

doi:10.1117/12.2290573

15 February 2018 Improving accuracy of robot-guided 3D laser surface processing by workpiece measurement in a blink

Richard Schares, Stefan Schmitt, Michael Emonts, Kai Fischer, Rüdiger Moser, Boris Frühauf

Proceedings Volume 10525, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VII; 1052508 (2018) https://doi.org/10.1117/12.2290573
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

A double-beam deflection unit (scanner) with integrated on-axis sensors for distance and temperature measurement is developed for the production of structural hybrid composite parts. This robot-guided 3d laser scanner is integrated in a composite production cell for in-mold laser pretreatment for subsequent joining. A basic challenge of industrial laser applications - the placement problem of workpiece in workspace of robot - was solved using on-axis low-coherence interferometry. Varying positions of workpiece for remote laser processes can in the future be compensated in seconds, depending on beam characteristic, here with a theoretical accuracy of 60 μm (X,Y), 1 μm (Z), 0,003° (B,C) and 0,174° (A). Two issues reduce this theoretical accuracy in practice. However, the improvement of daily process preparation is significant and validated by measurement of accuracy of laser path image at a close-to-series carbon fiber reinforced plastic (CFRP) demonstrator of BMW. The optimal position of scanner relative to part is a fundamental condition for ablative 3d surface processing. Driven by the necessity of quality assurance within automotive industry the inherent potential of sensor technology is shown, additionally. This potential study gives impulses for further developments of multifunctional laser scanners.

Conference Presentation

Citation Download Citation

Richard Schares, Stefan Schmitt, Michael Emonts, Kai Fischer, Rüdiger Moser, and Boris Frühauf "Improving accuracy of robot-guided 3D laser surface processing by workpiece measurement in a blink", Proc. SPIE 10525, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VII, 1052508 (15 February 2018); https://doi.org/10.1117/12.2290573

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available