42CrMo钢磨削淬硬加工中磨削力的研究

Research on Grinding Force of 42CrMo Steel in Grinding-Hardening

磨削力对磨削淬硬层的形成及其质量具有重要影响。本研究在MKL7132X6/12型数控强力成形磨床上对42CrMo钢进行磨削淬硬加工试验。试验结果表明,磨削深度、磨削速度和工件进给速度都是影响切向和法向磨削力的因素,且磨削深度的影响程度最大,工件进给速度最小。切向和法向磨削力会随着磨削深度和工件进给速度的增加、磨削速度的降低而增大。对磨削力比影响程度最大的是磨削深度,最小的是磨削速度。磨削力比会随着磨削速度、磨削深度的增加或工件进给速度的降低而增大。本研究为提高磨削淬硬加工质量提供了依据。

Grinding force has important effects on the forming and quality of the hardened layer. The grinding-hardening test of 42CrMo steel was carried out on a forming grinding machine. The results show the chief influence factor on the tangential and normal grinding force is the grinding depth, the grinding speed takes the second place and the workpiece speed is the last. When the grinding depth and workpiece speed increases, the tangential grinding force and normal grinding force both increase. The tangential grinding force and normal grinding force are declining as the grinding speed increasing. The results also show the chief influence factor on the ratio of the tangential and normal grinding force is the grinding depth, and the workpiece speed takes the second place and the grinding speed is the last. With the increase of the grinding speed and grinding depth, the grinding ratio increases. However, with the increase of the workpiece speed, the grinding ratio decreases. It provides the foundation for improving the quality of the grinding-hardening.