Trial Manufacturing of Ultra-high Removal Nanometer-Smoothness Grinding Machine Based on New Concept

近年来，为了高效生产高质量的零件，人们强烈要求高去除率超光滑磨削方法，该方法可以完成几乎与抛光形成的光滑度相同的光滑度。从这一观点出发，在以前的报告中，对横向磨削中极限光滑度的存在进行了理论上的讨论和实验上的证明。在此基础上，提出了基于新概念的超光滑磨削方法，并验证了该方法在超光滑表面附近的光整加工中的有效性。然而，水平平面磨削的去除率虽然比研磨和抛光的去除率大，但是水平平面磨削的去除率很小，为了使水平平面磨削的去除率更大，本研究首先分析了水平平面磨削情况下超光滑磨削的去除率。在此基础上，设计并试制了新型立式平面磨床。两种V ...更多信息 制造了立式磨床。一种是由传统的立式磨床改造而成的圆盘式工作台。另一种是新制造的，具有超高转速主轴和四柱高去除率磨削和高刚性机构。结合生产实践，利用卧式磨床对磨削液的供给效果和超高磨削深度进行了基础研究。另外，为了快速、准确地检测砂轮表面状态，开发了自动图像处理系统。主要结论如下：（1）与卧式砂轮机相比，两种新型立式砂轮机均具有更高的去除率，可用于超光滑磨削。（2）磨削液的种类和稀释度对碳化硅陶瓷的超光滑磨削有很大的影响。（3）与传统磨削方法相比，新开发的超光滑磨削方法可实现更高的超光滑磨削深度。（4）新开发的砂轮表面状态自动评价图像处理系统，可用于定量地追踪砂轮在一系列磨削操作过程中的状态，即修整过程、修整过程和磨削过程，包括加载时的磨削过程。少

The high removal rate ultra-smoothness grinding method which can finish to almost the same smoothness formed by polishing has been recently desired strongly for high efficiency production of high quality components. From the point of view, in the previous report, the existing of limiting smoothness, which can be attained in traverse grinding is discussed theoretically and presented experimentally. On the results, the newly devised ultra-smoothness grinding method based on the new concept is proposed and ascertained to be useful for finishing near the ultra-smoothness surface. The removal rate obtained using horizontal surface grinding, however, is small though the rate is larger than lapping and polishing.To make the removal rate much larger, in the research, the rate in ultra-smoothness grinding method is analyzed firstly in the case of horizontal surface grinding. Based on the analysis, the new type of vertical surface grinder is designed and manufactured on trial. The two kinds of v … More ertical grinders are manufactured. One is reconstructed from the conventional vertical grinder with the disc type of table. The other is newly manufactured and has the ultra-high revolution spindle and the four columns for the high removal rate grinding and high rigid mechanism. Accompanying with the manufacturing, the basic research on the supplying effect of grinding fluid and ultra-high depth of cut of grinding is investigated using the horizontal grinder. In addition, in order to examine the grinding wheel surface condition quickly and precisely, the automatic image processing system is developed. The main conclusions are as follows :(1)Comparing with the horizontal grinder, the two types of the newly manufactured vertical is useful for the ultra-smoothness grinding in much higher removal rate.(2)The type and dilution of grinding fluid have the large influence on the ultra-smoothness grinding of silicon carbide ceramic.(3)Comparing with the conventional grinding method, the newly developed ultra-smoothness grinding method enables the much higher depth of cut of ultra-smoothness grinding.(4)The newly developed automatic image processing system for evaluating the wheel surface condition is available for pursuing quantitatively the wheel conditions in a series of grinding operation processes, that is, truing process, dressing process and grinding process including the grinding process in the occurrence of loading. Less