通过用金刚石砂轮磨削聚晶金刚石 (PCD)材料的试验 ,研究了磨削速度vs 对PCD材料磨除率Q、磨耗比G的影响。试验结果表明 ,Q随vs 的提高而增大 ,但增幅较小 ;G随vs 的提高其曲线呈驼峰形 ,且驼峰对应于中速磨削范围。根据磨削过程中磨削力、砂轮磨耗率的变化规律及PCD磨削表面微观形貌 ,分析了该试验结果的产生机理。研究结果表明 ,磨削PCD材料时存在一个最佳磨削速度范围 ,在此范围内磨削成本最低、磨削效率较高 The effect of grinding speed vs grinding rate Q and wear ratio G on PCD material was studied by using diamond grinding wheel to grind polycrystalline diamond (PCD) material. The experimental results show that Q increases with the increase of vs, but with a small increase; with the increase of G, the curve of the Q increases to a hump shape, and the hump corresponds to the medium-speed grinding range. According to the variation of grinding force, the wear rate of grinding wheel and the microstructure of PCD grinding surface during grinding, the mechanism of the test results was analyzed. The results show that there is an optimal grinding speed range for PCD grinding, with the lowest grinding costs and the highest grinding efficiency