杯形砂轮磨削高硬度球面砂轮磨损的研究

采用分块杯形砂轮磨削高硬度球面,磨削过程中砂轮磨损不仅影响砂轮磨削性能,而且造成工件和砂轮实际接触面积不断产生变化,影响磨削力和磨削质量。为此,基于展成法磨削原理研究砂轮块磨损后的形状变化,分析了分块砂轮的磨损形式,揭示了进给过程中砂轮块磨损形状的变化规律,推导了砂轮磨损量和砂轮工件接触面积的计算公式,分析了砂轮磨损速度的变化趋势及其影响因素,试验最后研究了砂轮磨损量的变化规律,并验证了砂轮磨损量的计算模型。

Grinding Wheel Wear in Grinding of High Hardness Spherical Surface with Cup Wheel

High hardness sphere is ground by block structured cup wheel.The wheel's wear not only affect the grinding performance,but also change the contact area between workpiece and wheel,which have great influence on the surface quality and grinding force.The shape of the worn grinding wheel was discussed on the principle of the sphere generating method,and the wear types were also studied.The variation law of the wear shape in the grinding process was studied,and the mathematic models were built for calculation of amount of wheel wear and contact area between wheel and workpiece.The wear rate and the influential factors on the wheel wear were analyzed.At last the experimental results indicated the wear rate,and verified the theory model of grinding wheel wear.