基于磨削法的金刚石磨料工具精密修磨技术

对磨削法修磨复杂形面金刚石磨料工具的技术进行研究。使用光学影像磨床，采用形面组合法对典型复杂形面金刚石工具进行修磨应用试验；通过理论分析、试验以及对修磨形貌显微观察等手段分析修磨机理；对修磨基本工艺、修磨效率和修磨精度的影响进行试验研究，并确定其相关规律。研究结果表明:磨削法修磨去除机理是通过磨粒接触面内局部接触点产生的高应力使金刚石表面发生微破碎，因此采用基于磨削法的精密修磨技术具有高效率和高精度的优点；对修整效果的主要影响因素是修磨切深、修磨速度、修磨砂轮等；单一元素形面修磨精度可以达到0.002 5 mm，角度5′以内，整体形面轮廓精度可以达到0.005 mm以内，修整砂轮后采用切入磨削工件加工，其表面粗糙度可以达到0.120 μm以下。 

Precision grinding technology of diamond abrasive tools based on grinding method

In this experiment, the technology of grinding diamond abrasive tool with complex profile by grinding method is studied. The typical complex diamond tools are grinded by the method of combination of shape and surface with the optical image grinder. The grinding mechanism is analyzed by theoretical analysis, experiment and microscopic observation of the grinding surface. The influence of the basic grinding process on the grinding efficiency and precision is studied and the relevant laws are determined. The results show that the mechanism of grinding removal is that the surface of diamond is slightly broken by the high stress produced by the local contact points in the contact surface of abrasive particles, so the precision grinding technology based on grinding method has the advantages of high efficiency and precision; the main influence factors of the dressing effect are the grinding depth, grinding speed, grinding wheel, etc.; the precision of single element profile grinding can be improved In order to achieve 0.002 5 mm, angle within 5′, the overall profile accuracy can reach within 0.005 mm, and the surface roughness of grinding workpiece by cut in grinding feed mode after dressing can be less than 0.120 μm.