高速HSK热装工具系统结合部的参数辨识  

Parameter Identification of High-speed HSK Shrink Tooling System Coupling Portion

作　　者：郑登升 陈建[1] 陶德飞 王贵成[1,2] 

机构地区：[1]江苏大学,镇江212013 [2]南通理工学院,南通226002

出　　处：《中国机械工程》2015年第18期2486-2490,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51075192);国家重大科技专项(ZX201304009031);南通市重点实验室建设资助项目(CP12014002)

摘　　要：HSK工具系统的动态特性直接影响机床的加工效率与质量,获得准确的工具系统结合部参数又是精确预测HSK工具系统动态特性的基础。将热装刀柄-刀具结合部简化为弹簧-阻尼模型,基于Timoshenko梁理论建立了HSK热装刀柄-刀具结合部的有限元模型,采用弹塑性理论辨识结合部的刚度和阻尼,获得了HSK热装刀柄-刀具结合部内沿轴向不同位置的刚度和阻尼。进而建立了HSK热装工具系统的有限元动力学模型,分析工具系统刀尖点的频响函数。最后进行了HSK热装工具系统频响函数的实验测量,与理论频响函数相比较,验证了将结合部等效为弹簧-阻尼的辨识方法的合理性和有效性。The dynamic characteristics of HSK tool system affected the machine processing effi- ciency and the workpiece surface quality,The basis of accurate prediction of the dynamic characteris- tics of HSK tool system was for obtaining coupling portion precise parameters of tool system. This pa- per simplified coupling portion of HSK shrink toolholder as spring-damping model, based on Timosh- enko beam theory a finite element model of the HSK shrink-tool coupling portion was established, the stiffness and damping of coupling portion was identified by using elastoplastic theory, stiffness and damping of HSK shrink-tool coupling portion was got at different axial locations. And dynamics finite element model of HSK shrink tool system was established,frequency response function（FRF） of sys- tem tool tip point was analyzed. And experimental measurements of HSK shrink tool system FRF were made,which was compared with the theoretical FRF. Equivalent to a spring-damping the reason- able and effective identification method of coupling portion was validated.

关 键 词：高速加工 可靠性 HSK热装工具系统 结合部 参数辨识 

分 类 号：TG502[金属学及工艺—金属切削加工及机床] TH113[机械工程—机械设计及理论]