中文摘要：

为探究刀杆外径对热缩刀杆与刀具配合的力学特性的影响,对热缩刀杆与刀具配合模型进行理论研究,利用有限元软件ANSYS对静态、径向力作用下及感应加热情况下的不同刀杆外径的热缩刀杆与刀具配合等效应力、接触压力、热变形及热应力等力学特性进行对比分析。结果表明,随着刀杆外径的增大,热缩刀杆与刀具配合的总的接触压力、最大等效应力及热应力增大,配合面的最小热位移差值减小。在径向力的作用下,热缩刀杆上的接触应力不再均匀,最大接触应力明显增大,刀具也因径向力的作用而产生变形。在此基础上进一步给出了热缩刀杆外径的控制方法与流程,对热缩刀杆的合理设计和选用具有一定的现实指导意义。

英文摘要：

Based on the theoretical analyses of matching molder between shrink-fit holder and cut- ter, the mechanics properties of the matching such as contact pressure, equivalent stress, thermal de- formation and thermal strain were analyzed at different external diameters of shrink-fit holder in stat- ic, under radial force and inducting heating by using the finite element software ANSYS. The results show that the total contact pressure, maximum equivalent stress and thermal stress increase and the minimum thermal displacement difference decreases with the increase of holder external diameter. Under the action of radial force, the contact stresses on the holder no longer uniform and the maxi- mum contact stress significantly increases, cutter also deforms. Finally a method to determine the reasonable holder external diameter is given and it has a practical guiding significance for the design and selection of the shrink-fit holder.