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The development of a flexible laser robot system for the welding of formed sheet steel components under production line conditions

Objective


The objective of the research was to develop a laser welding system for use in car manufacturing. The problems associated with work handling systems, joint design and zinc coated steels were investigated. The Cobra laser robot system manufactured by Ferranti for laser cutting was used.

The following results were achieved:
a laser welding clamping process was developed which enables several elements of a car body shell to be welded without any additional or custom made clamping;
a beam guide for positioning the laser at the end of the robotic arm was developed which has degrees of freedom;
a welding clamping head for welding 2 workpieces without the need for any additional or custom made clamping was developed;
a polar robot which can press on the workpieces with an effort of up to 200 daN and which can follow a programmed trajectory at the same time was developed.
THE PROGRAMME STUDIES AND DEVELOPS SOLUTIONS TO THE PROBLEM ASSOCIATED WITH THE APPLICATIONS OF LASER ROBOT WELDING SYSTEMS TO AUTOMOTIVE PRODUCTION LINE MANUFACTURING INCLUDING WORK HANDLING SYSTEMS, AND RELATING TO JOINT DESIGNS, ZINC COATED STEELS AND FABRICATION RATES (SPEED SUPERIOR TO 2 M/MN, POWER EQUAL TO 5 KW).

A SPECIAL WELDING HEAD AND A BEAM GUIDE CAPABLE OF BEING ATTACHED TO A POLAR ROBOT WILL BE DEVELOPED; TRIALS WILL BE MADE TO KNOW THE OPERATING CONDITIONS.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

GIE PSA Peugeot Citroen
Address
Avenue De La Grande Armee 75
75116 Paris
France

Participants (2)

Ferranti Industrial Electronics Ltd
United Kingdom
Address

DD2 3PN Dundee
James Howden and Co Ltd
United Kingdom
Address
King's Cross Road
DD2 3EL Dundee