Study On Five-axis Machine 3D Tool Compensation Technique And Post-processor

Five-axis CNC machining technique is an important means to achieve high-efficiency and high-quality processing about the contour of complex parts.In the building of "China 2025" manufacturing power,it also be listed as one of the important development tasks.As one of the critical five-axis NC machining technique.3D tool compensation plays an important role in five-axis NC machining to improve the the quality and efficiency of the parts.This article mainly researchs 3D tool compensation technique and its post-processing in five-axis NC machining.Based on the principle of two-dimensional tool compensation,we studied the method of three-dimensional tool length compensation and three-dimensional tool radius compensation respectively.Analysis of difference between two-dimensional tool length compensation and three-dimensional tool length compensation,with the method that vector decomposition of the length compensation amount and compensating from the X,Y,Z three directions,three-dimensional tool length compensation can be achieved.Through the establishment of tool compensation model,derived the formula of tool radius compensation vector to solve tool radius compensation vector direction uncertain issues in three-dimensional.Base on UG pre-processing,by modifying the control function of cutter location file format to solve the problem that UG can not output cutter location file,including contact location,in a specific format,providing cutter location information required by the development of 3D tool compensation post-processor.Based on DMU 210 FD mill-turn center equipped with SIEMENS 840 D CNC system,study its NC instruction format to implement 3D tool compensation.Using inverse kinematics transformation principle deduced post-processing algorithm,then based IMSpost platform to develop 3D tool compensation dedicated post-processor,and access to the NC code with 3D tool compensation vector information.Taking integral impeller as object,analyse result of the simulation machining in virtual simulation processing system of DMU 210FD mill-turn center built by VERICUT.The validity and effectiveness of the 3D tool compensation dedicated post-processor.Verification results shows: the developed post-processor based on 3D tool compensation algorithm can convert the CLSF to NC program with 3D tool compensation vector information.Not only effectively improve the CNC machining precision and efficiency,but also possess some theoretical significance and practical value for improving efficiency and precision of five-axis CNC machine...