高速中空热装刀柄-刀具结合部的建模与参数辨识  

Model and Parameter Identification of Hohlschaftkegel Shrink Toolholder-Tool Joint Part

作　　者：陈建[1,2] 王贵成[1,3] 田良 商宏谟 郑登升 

机构地区：[1]江苏大学机械工程学院,镇江212013 [2]四川大学制造科学与工程学院,成都610044 [3]成都工具研究所有限公司,成都610500 [4]南通理工学院机电工程学院,南通226002

出　　处：《上海交通大学学报》2016年第7期1005-1010,1016,共7页Journal of Shanghai Jiaotong University

基　　金：“高档数控机床与基础制造装备”科技重大专项(2013ZX04009031);南通市重点实验室资助项目(CP12014002);江苏省博士创新基金项目(CXZZ13_0656)

摘　　要：将高速中空(HSK)热装刀柄-刀具结合部简化为并联均布的弹簧-阻尼模型.建立热装刀柄-刀具结合部的有限元模型,根据弹性和黏性阻尼理论,分别对结合部内各位置的刚度和阻尼参数进行辨识,并使用多点耦合响应法验证其辨识参数的合理性.采用有限差分理论与实验相结合的方法对结合部端点处的刚度和阻尼参数进行辨识,并使用耦合响应法验证其辨识参数的准确性.提出了将有限元辨识的刚度参数和有限差分辨识的阻尼参数作为结合部的辨识参数,建立了HSK热装工具系统的梁单元模型,采用有限元法分析热装工具系统的模态,且与实验值比较,验证了其假设结合部参数的合理性.The Hohlschaftkegel （HSK） shrink toolholder-tool interface was simplified as a spring-damp model. The finite element model of the interface was built. According to the elastic theory and viscous damp theory, the stiffness and damp parameters in different locations of the interface were identified. The rationality of parameters was verified using the multi-points coupling receptance method. Besides, the stiffness and damp parameters at the end of the interface were identified using the finite difference method and experiment, and the accuracy of parameters was confirmed using the coupling receptance theory. The idea that stiffness parameters with FEA and damp parameters with FDM were regarded as the identifica- tion parameters of shrink toolholder-tool interface was proposed. Then, the beam model of HSK shrink toolholder-tool assembly was made and the modal of toolholder-tool assembly was analyzed. Comparsion of the theoretical modal and the experimental one verifies the rationality of the proposed joint part parameters.

关 键 词：高速中空热装刀柄 刀具 结合部 参数辨识 

分 类 号：TG504[金属学及工艺—金属切削加工及机床]