Study on Tool Interference Checking for Complex Surface Machining

In order to solve the problem of complex and low efficiency of tool interference detection algorithm for five axis NC processing of complex surface, new tool interference detection algorithm is proposed based on space three dimensional coordinate system transform principle, the surface points was calculated in tool local coordinate system in the tool projection region to judge whether occurred interference, this method can detect local interference and global interference, it greatly reduce the calculation, and improve the detection efficiency and NC processing efficiency. The calculations of tool axis rotation and angular is given to avoid interference. The feasibility and effectiveness of the proposed method are verified by an example.