Research on Diamond Turning & Grinding in Low Temperature Machining Environment

为了实现未来的超精密加工技术，我们提出了加工环境控制超精密加工方法的思想和现有的具有金刚石车削和超精密磨削功能的超精密加工系统的设计思想。并对所提出的加工方法进行了详细的研究，并开发了具体的加工系统。因此，通过一系列的研究和开发，可以得到以下结论。我们可以成功地开发出一套高性能的超精密金刚石车磨加工系统，从而能够高效合理地加工出难加工材料。对难加工材料钛合金基板的加工方法进行了合理的研究，并对其提出的加工方法进行了评价。从而确定所提出的加工方法的适用性和可用性。在不同的加工环境下加工钛合金基材时，可以明确刀具磨损和切屑条件、切屑形态和流动、表面粗糙度和加工表面轮廓的差异。在此基础上，提出了钛合金在超精密切削区的切割机理，即切割深度为纳米量级。

In order to realize an ultraprecision machining technology of the future, we proposed an idea of the machining environment-controlled ultraprecision machining methodology and a design concept of the available ultraprecision machining system with diamond turning and ultraprecision grinding functions. And also, we carried out the detailed investigations on the proposed machining method and the development of a concrete machine system. As a result, the following conclusions can be obtained from a series of the research and development.1. We could successfully developed an ultraprecision machining system for diamond turning and grinding with high performance to be effectively and rationally able to machine hard-to-cut materials.2. We carried out rationally investigations on the machining method of titanium ally substrate, one of the hard-to-cut materials, and evaluated its proposed machining method. And we could ascertain applicability and availability of the proposed machining method.3. We could clear the difference of tool wear and chipping condition, chip form and flow, surface roughness and profile of the machined surface when cutting the titanium ally substrate in the various machining environment. And based on the results, we proposed cutting mechanism of titanium ally in the ultraprecision cutting region, i.e., the depth of cut is nm orders.