In order to solve the problem of automatic grinding of four side welds of stainless steel water tank,the robot end effector and other equipment were designed based on SolidWorks,and the simulation platform of water tank grinding robot workstation was built based on RobotStudio,which was composed of abrasive belt grinder,IRB4600 robot,end effector and other equipments.According to the actual working conditions of the stainless steel water tank,the polishing process flow and the polishing path were designed,the Smart components of the polishing workstation were created,and common I/O signals were associated.The TCP track tracking function and collision monitoring function were used to check whether each track point and motion track met the working requirements,and the timer was called to record the grinding time.In the simulation platform,the ideal grinding track can be obtained through offline programming,simulation and debugging,which can be used for actual operation,and is conducive to improve the on-site programming and processing efficiency,improve the weld grinding quality.