关键词:  , 激光视觉检测, 焊缝跟踪, 位置纠偏

Abstract:

Aimed to improve the seam tracking precision while welding，this paper proposes a laser vision seam tracking system which
is composed of a laser vision sensor，a deviation correction controller，two stepping motors and a cross slider． While the tracking system
runs，the laser vision sensor measures position deviation between the seam gun’s current position and desired position，and the controller
determine the correcting value，and the motors drive the cross slider to modulate the seam gun’s position and posture so as to offset
seam tracking error． The prototype of the system was constructed． Seam tracking experiments show that the tracking error can limit to being
less than 0. 5mm． It is concluded the laser vision seam tracking system exists wide application prospect in precision welding engineering．

Key words: laser vision detection, welding seam tracking, position correction