新型点磨削砂轮磨削参数对磨削温度影响研究

提出了一种带有粗磨区倾角θ的陶瓷结合剂CBN点磨削砂轮，这种新型砂轮具有磨除率高、加工精度好等优点。研究了磨削热产生与分配理论和红外测温原理。分别用不同θ角的砂轮在一系列磨削参数条件下磨削QT700材料的阶梯轴,用Thermovision A40M热像仪测量砂轮磨削工件时接触区的平均温度,得出了偏转角α、磨削深度ap、工件轴向进给速度vf和砂轮速度vs在磨削过程中对磨削温度的影响规律，并且比较了在同一组磨削参数下,三种不同θ角砂轮对磨削温度的影响情况。

Study on Effects of Novel Point Grinding Wheels Processing Parameters on Grinding Temperature

A vitrified bond CBN point grinding wheel with coarse grinding area slope angle θ  was presented.The removing rate of new grinding wheels is higher and the machining accuracy is better than that of conventional wheels. The theory of grinding heat generation and distribution and infrared temperature measurement were studied. These  wheels with different coarse grinding area slope angle θ  were used to grind the stepped shaft of QT700 with a series of grinding parameters. Thermovision A40M  were used to measure the grinding contact area temperature. The effects of different grinding parameters such as deflection angle α, grinding depth ap, workpiece axial feed rate vf and wheel speed vs on grinding temperature were generalized.In the same group of grinding parameters, the effects of these different wheels on grinding temperature were contrasted.