Automated vision-guided precision positioning in microassembly

Rudiger Dabelow; Alexander Boedcher

doi:10.1117/12.467625

18 October 2002 Automated vision-guided precision-positioning in microassembly

Rudiger Dabelow, Alexander Boedcher

Proceedings Volume 4902, Optomechatronic Systems III; (2002) https://doi.org/10.1117/12.467625
Event: Optomechatronic Systems III, 2002, Stuttgart, Germany

Abstract

In this paper the assembly of micro-optic components using image processing is introduced. An automated positioning process for laser resonators, which is handled manually until now, is implemented in a prototypical scale. For this work a cartesian precision-robot is used in combination with an image processing system including two cameras with different resolutions and perspectives. The components to be positioned are presented orderless on a pallet and have to be detected, gripped and aligned with an edge after calculating position and angle correction values. With a camera that is mounted vertically on the Z-axis of the robot the position of the components on the pallet is detected. Although vacuum grippers are typically not able to centre components one has to be used in this process as the effecting surface on the sides of the laser resonators may not be touched. To correct the errors that were caused by the suction of the vacuum gripper a second image processing is used to get values for a correction of position and angle. These images are taken with the help of a mirror that is positioned in an angle of 45°. With this mirror a horizontal mounted camera can take pictures of the gripper holding the laser resonator from underneath. Very good results could be achieved during an experimental evaluation, caused by the second image processing in particular. The results showed that it is possible to get a position error of only a few micrometers. In the whole process primarily the lighting system was identified as the critical factor.

Citation Download Citation

Rudiger Dabelow and Alexander Boedcher "Automated vision-guided precision-positioning in microassembly", Proc. SPIE 4902, Optomechatronic Systems III, (18 October 2002); https://doi.org/10.1117/12.467625

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