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机床主轴支承距的合理选择,是获得最大静刚度的重要条件之一。文献[4]、[5]介绍用实验方法证明,动态测示的最佳值与静态研究的数值十分接近。因此首先认真研究主轴部件的静刚度,就显得格外必要了。两支承主轴部件的受力情况大致归为四类:(1)悬伸部分承受传动力Q,见图1;(2)两支承间承受Q,见图2;(3)外伸尾部承受Q,见图3;(4)不承受Q(即卸荷主轴),见图4。本文将介绍上述四种情况的支承距最佳值的计算公式,和前三种情况的传动齿轮最佳位置的计算公
Reasonable choice of machine tool spindle bearing distance is one of the most important conditions to obtain the maximum static stiffness. The literature [4], [5] introduced the use of experimental methods to prove that the best value of the dynamic test and the value of the static study is very close. Therefore, the first serious study of the static stiffness of the spindle components, it is particularly necessary. The stress of the two main spindle components can be generally classified into four categories: (1) the overhanging part withstands the transmission force Q, see Figure 1; (2) the two supports bear Q, see Figure 2; (3) , See Figure 3; (4) does not withstand Q (unloading spindle), shown in Figure 4. This article will introduce the above four cases of bearing from the optimal value of the formula, and the first three cases of the best position of the transmission gear