Thermal Deformation Controlled Machine Tool Structure

近年来，机床热变形问题已成为实现高精度、高性能产品制造系统的重要问题。为了解决这些问题，迄今为止已经进行了大量的研究，主要是减少机床的热变形，主要是由轴承等内部热源引起的。然而，没有一个有效的模型来表达实际运行状态下的动力和热行为。因此，为了建立含滚动轴承的机床主轴系统热特性的动态仿真模型，本文提出了机床主轴热行为的热闭环概念。通过不同旋转条件下的实验研究，验证了该模型的有效性。此外，基于新设计理念开发了热变形控制的超精密机床结构，并对其特点和性能进行了评价。

The thermal deformation of machine tool has recently become the most important problem to materialize the manufacturing system for the product with higher accuracy and performance. In order to solve such problems, a large number of investigations so far has been dealt with reducing the thermal deformation of machine tool mainly caused by the internal heat sources such as a bearing. However, there is no effective model to express the dynamic and thermal behavior in actual operating condition.In this research, therefore, to establish the dynamic simulation model of thermal characteristics in machine tool spindle systems with the rolling bearing, the thermal closed-loop concept on the thermal behavior of machine tool spindles has been proposed. Validity of the proposed model has also been verified through experimental investigations under various rotational conditions.In addition, thermal deformation controlled ultra-precision machine tool structure based on the new design concept has been developed and evaluated its characteristic features and performance.