切入磨削与纵向磨削的磨削力分析与比较

研究了同时包含切入磨削和纵向磨削的复杂外圆磨削过程。根据纵向磨削过程的特点,将砂轮等效成若干个小砂轮,在传统阶梯模型的基础上构建了砂轮磨损的抛物线模型。推导了基于两种模型的纵向磨削切向分力和切入磨削切向分力的比较公式,两切向分力的比值反映了切入磨削和纵向磨削转换时切向分力的变化情况,它主要与磨削系数、砂轮宽度和纵向进给速度有关。采用砂轮主轴功率信号分析磨削切向分力,通过实验验证了抛物线模型更符合实际情况的结论。研究结果为采用磨削力信号和功率信号研究复杂磨削过程的监控提供了参考依据。

Analysis and Comparison of Grinding Forces between Plunge Grinding and Traverse Grinding

Complex cylindrical grinding processes including both plunge grinding and traverse grinding were investigated.According to the traverse grinding characteristics,the grinding wheel was equivalent to a number of small wheels,a parabolic model for wheel wear was built based on the traditional steps model.The comparision formula of tangential grinding force was derived based on two tangential grinding forces of plunge grinding and traverse grinding the ratio of the tangential grinding force reflected tangential grinding varieties from the plunge grinding to the traverse grinding and was concerned with grinding coefficient,the wheel width and the traverse feed rate.The tangential grinding force was analyzed by the grinding wheel spindle power signals in experiments and the parabolic model is more realistic.Using force signals and power signals to monitor the complex grinding processes provides a reference method.