Abstract
In five-axis computer numerical control(CNC) machining,the interpolation modes for rotary axes motions are different between tool path planning stage which interpolates with geometry of parts and real machining stage which interpolates with the configuration of machine tools.A tool path interpolation error in the rotary axes motions of real five-axis CNC machining is analyzed in this work.In the plane orthogonal to the tool path direction,the error model is constructed by taking into account deviation of the tool orientation.The maximum error is proven in the middle of two consecutive cutter locations,and its close-form equation is derived.A practical approach to inserting cutter locations in the tool path with the tool orientation and the interpolation errors under a specified limit is proposed.This approach is verified with several empirical examples.
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