Nonlinear Error Trajectory Correction and Milling of Double-Tool CNC Machine Tools
In order to further improve the motion trajectory control accuracy of dual-tool CNC machine tools,a new algorithm to reduce the nonlinear error of top milling caused by dual-tool is designed according to the trajectory planning requirements.On the basis of analyzing the nine-axis linkage machine tool to build a conversion model,the evaluation effect of the nonlinear error generated by the rotary axis of the work piece during the machining of the dual-tool tool is characterized.Simulation results show that the leaf dorsal surface forms a larger nonlinear error relative to the leaf basin surface,and the initial value of the nonlinear error of the leaf dorsal surface is super poor before interpolation.The algorithm in this paper can control the machining error to meet the tolerance design requirements after completing the difference optimization,which further improves the fit between the trajectory line and the blade profile,and helps the blade profile to obtain higher machining accuracy.
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