聚晶金刚石最佳磨削速度的试验研究

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

Experimental Research on Optimum Grinding Speed for PCD

Through an experiment of grinding polycrystalline diamond (PCD) by diamond grinding wheel, the influences of grinding speed v s on PCD material removal rate Q and grinding consumption ratio G are researched. The experimental results show that as the increasing of v s, Q is increased, but the increment is small; and a hump is appeared on the curve G correspond to the range of medium grinding speed. Based on the change rules of grinding force and wheel consumption rate as well as microstructures on grinding surface of PCD, the mechanics causing the experiment results is analyzed. Research results indicate that there is an optimum grinding speed range during grinding PCD in which the lowest cost and higher efficiency can be realized.