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本文根据主轴系统轴端刚度损失最少的原则,提出机床主轴的抗弯度EI应与前支承刚度相匹配。以便充分发挥主轴与轴承的性能。文中推导了刚度匹配的表达式,并提供了不同类型滚动轴承的匹配图表。根据结构上的需要,确定参数K_a、λ值后,便可迅速地算出主轴的前轴颈或与其相匹配的轴承类型。为达到机床主轴系统刚度的合理匹配,文中提出了一些措施,并通过对不同参数的主轴系统的试验,得到了证实。
According to the principle of least loss of rigidity at the shaft end of the spindle system, this paper proposes that the bending moment EI of the machine tool spindle should match the stiffness of the former support. In order to give full play to the performance of the spindle and bearing. In this paper, we derive the expression of stiffness matching and provide the matching charts of different types of rolling bearings. According to structural requirements, determine the parameters K_a, λ value, you can quickly calculate the spindle’s front journal or its matching type of bearing. In order to achieve a reasonable match of the rigidity of the spindle system of the machine tool, some measures are put forward in the article, and the tests on the spindle system with different parameters are confirmed.