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《Computer Integrated Manufacturing Systems》 2010-09
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Active error compensation methods for numerical control machining

ZHOU Jing1,CHEN Wei-fang1,QU Shao-peng2(1.College of Mechanical & Electrical Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China;2.China Precision Engineering Institute for Aircraft Industry,Beijing 100076,China)  
To improve machining accuracy of workpieces,a local error compensation method based on tolerance was proposed. And the machining errors were compensated actively by modifying Numerical Control(NC) codes. Error values of parts surface were analyzed,and according to tolerance requirements,the critical deflection areas beyond tolerance range were obtained,and actual cutting depth of the areas was amended to compensate local errors. Tool path with error compensated values was re-planned when actually modified cutting depth was decided. And then step and row spacing were determined according to actual machining accuracy. By post-processing,modified NC codes were achieved for workpiece machining. An example was used to demonstrate the feasibility of this approach.
【Fund】: 总装备部预研基金资助项目(51318020202)~~
【CateGory Index】: TG659
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