The application of Stainless steel electric kettle market is more and more big,and people's requirement on the quality of the electric kettle are increasingly. To guarantee the mechanical polishing quality of the weld on the kettle spout,the path plan of polishing the welding surface has been done in this paper. First of all,in order to facilitate the numerical control processing,the model of the electric kettle need to be established,and the contact point set of the cutter is extracted effectively,meanwhil...