DYNAMIC CHARACTERISTICS ON PRECISION NC LATHE BASED ON MULTI-BODY SYSTEM THEORY

摘要

＜正＞Based on multi-body system theory and the mainshaft system of precision NC lathe as object investigated,it is treated as a coupled rigid-flexible multi-body system which is made up of some rigid and elastic bodies in an especial linking mode.And a dynamic model is established.The problems of computing vibration characteristics are resolved by using multi-body system transfer matrix method.Results show that the mainshaft system of NC lathe is in the stable and reliable working area all the time.The method is simple and easy,the idea is clear.In addition,the method can be easily used and popularized in the other multi-body system.