VMC-1000主轴箱模态分析及改进设计

摘要

Natural and dynamic property of machine spindle box is one of the most important influencing factors to working accuracy,type VMC-1000 was studied.Based on finite element modal analysis,the imperfection of the machine spindle box was pointed out and a way was presented to improve the structure. In addition,the two different spindle boxes were analyzed with stiffness analysis to get the Maximum Deformation and Maximum stress of spindle box. According to the modal analysis and static analysis,the improved spindle box has high stiffness.%机床主轴箱的固有动态特性直接影响到机床的加工精度,以VMC-1000立式加工中心主轴箱为研究对象,应用有限元软件对其进行模态分析,提出了该主轴箱的薄弱环节.针对薄弱环节对箱体进行改进设计,通过比较分析,验证了改进的有效性.同时对两种结构刚度分析,得出主轴箱的最大变形量和最大应力,证实了改进的箱体结构具有较高的刚度.