The dynamic characteristics of spindle-holder taper joint greatly influence the performance of machine tools. This paper proposed a 24-DOFs spring-damper model to deal with the dynamic model of spindle-holder taper joint. To identify the stiffness of springs and damping coefficient of damper, a parameter identification method was developed based on the inverse relationship of dynamic matrix and frequency response function matrix. Using modal test and the proposed dynamic model, the taper joint of BT40 holder was studied. At the end of this paper, a case was presented to validate the dynamic model. Because the radial, tangential and axial effects of the taper joint were all taken into considerations, the proposed model provided a higher accurate model of spindle-holder taper joint.
展开▼
