摘要
采用多点约束方法模拟数控机床主轴部件中的轴承弹性支撑,建立主轴部件的有限元模型,正确反映主轴部件的装配关系。在有限元模型的基础上,根据实验得到的模态参数,选用振型叠加法求得主轴部件的瞬态响应,得到位移响应云纹图和曲线图,为结构改进指出方向。文中通过对机床主轴部件进行瞬态响应分析,得到其动态特性,为进一步提高其精度和转速提供理论依据。
Flexibility support of bearing of the spindle components for numerical controlled machine tool is simulated by multi-point constraints method to build finite element model, and the assemble relation of the spindle components is correctly displayed. Transient response of the spindle components could be got through mode superposition method aecording to the experimental modal parameters on the basis of the finite element model, and then the direction of struetural improvement is pointed out by the contours and curves of displacement response which are obtained by transient response analysis. Dynamie characteristic of the spindle components is carried out by transient response analysis, so it provides theoretical basis for promoting better precision and rotational speed of the spindle components.
出处
《机械强度》
CAS
CSCD
北大核心
2009年第4期629-633,共5页
Journal of Mechanical Strength
基金
重庆市重大科技攻关项目(2006AA3010)
重庆市科技攻关项目(2005AC3029)~~
关键词
主轴部件
有限元法
多点约束法
瞬态响应分析
Spindle components
Finite element method
Multi-point constraints
Transient response analysis
