Numerical control machining tool path partitioning mapping method considering error regional distribution

The invention discloses a numerical control machining tool path partitioning mapping method considering error regional distribution. The method includes: generating a theoretical tool path according to a workpiece theoretical surface, and comparing a workpiece practical surface with the workpiece theoretical surface to obtain an error distribution rule; then performing region division on the practical surface according to the error distribution rule; and finally mapping the theoretical tool path to the workpiece practical surface by selecting corresponding tool path mapping methods according to regions of different error types based on a dividing result to accomplish a tool path mapping process. According to the method, the process of the tool path mapping method is respectively selected for each region according to the error type partitioning result of the workpiece practical surface, various tool path mapping methods are employed in tool path mapping of the workpiece practical surface, advantages of various