The Static And Dynamic Research Of The Machine Tool Spindle System And Its Optimization

The static and dynamic deformations of the machine tool spindle system exert a tremendous influence on the performance of the machine tool. So the analysis of the spindle system static and dynamic deformations occupies an important position in the design of machine tool. Using finite element analysis software for spindle system performance analysis and optimization design can greatly improve the level of the main axle design, reduce design time and cost.This paper according to the XH2320/4planer type milling machine. Using finite element analysis software ANSYS studies on the spindle system performance analysis and optimization design, in order to improve the dynamic characteristics, improve the spindle static processing machine for research purposes.The results of this paper are listed as follows:(1) Will the combination of main shaft and bearing surface as spring-damping connection. The load on the spindle, the supporting stiffness of bearing, the boundary and elements are analyzed correctly. (2) The paper does discussion stiffness of bearing; it is the base of spindle system research. According to the limited iterative method, calculate the stiffness of the bearing.(3) The static stiffness, the natural frequency and the peak value of dynamic response is calculated by the static, mode and response analysis of the spindle. The stiffness of the spindle bearings has great influence on the machine tool spindle system performance.(4) Parameterize the spindle model using APDL. To optimize the design of the spindle, the optimized machine tool spindle system with a lighter structure and better static and dynamic performance.