Self-defining path layout strategy for thick plate arc welding robot

Automatic path-layout of multi-pass welding is one of key technologies for thick plate arc welding robot. Multi-pass path-layout strategy of single-sided V-groove and double-sided K-groove is researched. Multi-pass path-layout model based on graph is developed through feature modeling, welding sequence and layout types and so on. Position and attitude of multi-pass path can be automatically generated. Self-defining layout algorithm of multi-pass path-layout is deduced in detail. Moreover, Self-define layout is used to S-seam multi-pass welding of single-sided V-groove. Multipass welding simulation and motion program of an arc welding robot are quickly generated, flexibility and efficiency of teach improving.