Minimizing Dimensional Variation and Robot Traveling Time in Welding Stations
Paper in proceedings, 2014

Complex assembled products as an automotive car body consist of about 300 sheet metal parts joined by up to 4000 spot welds. In the body factory, there are several hundred robots organized into lines of welding stations. The distribution of welds between robots and the welding sequences have a significant influence on both dimensional quality and throughput. Therefore, this paper proposes a novel method for quality and throughput optimization based on a systematic search algorithm which exploits properties of the welding process. It uses approximated lower bounds to speed up the search and to estimate the quality of the solution. The method is successfully tested on reference assemblies, including detailed fixtures, welding robots and guns.

robots

branch and bound

dimensional quality

joning

cycle time

optimization

Assembly

spot welding

Author

Johan Carlson

Chalmers, Product and Production Development, Product Development

Domenico Spensieri

Chalmers, Product and Production Development, Product Development

Kristina Wärmefjord

Chalmers, Product and Production Development, Product Development

Johan Segeborn

Rikard Söderberg

Chalmers, Product and Production Development, Product Development

5th CIRP Conference on Assembly Technologies and Systems, November 13-14, 2014, Dresden, Germany

2212-8271 (ISSN)

Vol. 23 C 77-82

Subject Categories

Production Engineering, Human Work Science and Ergonomics

Computer and Information Science

Discrete Mathematics

Areas of Advance

Production

DOI

10.1016/j.procir.2014.03.199

More information

Created

10/7/2017