CAJ | 학술논문

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。
HSK 공구계통적동태특성직접영향궤상적가공효솔여질량，획득준학적공구계통결합부삼수우시정학예측 HSK 공구계통동태특성적기출。장열장도병도구결합부간화위탄황조니모형，기우 Timoshenko 량이론건립료 HSK 열장도병도구결합부적유한원모형，채용탄소성이론변식결합부적강도화조니，획득료 HSK 열장도병도구결합부내연축향불동위치적강도화조니。진이건립료 HSK열장공구계통적유한원동역학모형，분석공구계통도첨점적빈향함수。최후진행료 HSK 열장공구계통빈향함수적실험측량，여이론빈향함수상비교，험증료장결합부등효위탄황조니적변식방법적합이성화유효성。
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.