Research on complex surface grinding path planning of grinding robot based on NX and Tecnomatix

To address the limitations of current grinding robots’ path planning for complex curved surface grinding, a novel path planning technology and post-processing method based on NX and Tecnomatix were proposed. Firstly, the equal chord height error algorithm is used to discretize the machining path, and the posture of the path point is confirmed according to the workpiece surface and the grinding path orientation, so as to obtain the complete grinding path position and posture information. Then, according to the pose of the grinding points, the position and posture planning for grinding the complex surface workpiece is carried out using the customized development method with NX. Finally, the virtual robot workstation and actual grinding system is built for experiments on the generated path. The experimental results show that the robot offline path planning technology of combining the NX customized development method and digital twin simulation technology can not only meeting the needs of more refined path planning tasks but also presenting a complete the grinding process of robot workstation based on logic control event-driven. Thus, the overall planning of robot grinding process can be effectively carried out, and the processing effect of robot grinding can be predicted, improving the machining accuracy and efficiency.