【摘要】 结合轴系变形方程,对支承部位轴承与主轴的位移耦合以及对系统轴向力平衡条件进行了分析,提出用迭代法求解高速主轴系统刚度和临界转速的概念。计算结果表明,支承轴承的非线性对系统性能影响明显,当轴承预加轴向载荷增加时,轴承支承刚度增大,导致主轴系统刚度和临界转速随之增大。更多还原

【Abstract】 Combining with the deformation equation of spindle,the displacement coupling between bearing and spindle at a support place and the axial load equilibrium of system are analyzed.The concept is brought forth that the spindle stiffness and critical speed are solved by iteration.The results show that the non-linearity of bearing has much effect on system characteristic at high speed.As axial preload increases,bearing stiffness becomes great,resulting in increasing spindle stiffness and critical speed.更多还原