Research on Diamond Turning & Grinding in Low Temperature Machining Environment

为了实现未来的超精密加工技术，提出了加工环境控制的超精密加工方法思路，提出了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路。并对所提出的加工方法和混凝土机械系统的开发进行了详细的研究。因此，通过一系列的研究和开发，可以得出以下结论：成功开发了一种高性能的金刚石车削磨削超精密加工系统，能够有效、合理地加工难切削材料。对钛合金基体这种难切削材料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。确定了所提出的加工方法的适用性和有效性。在不同的加工环境下，对钛合金基材进行切削加工时，刀具的磨损和切削情况、切屑的形态和流动、被加工表面的表面粗糙度和轮廓的差异进行了分析。在此基础上，提出了钛合金在超精密切削区域的切削机理，即切削深度为nm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.