平磨磨削力的数学模型改进与实验

为了实现操作人员对最佳磨削参数的可重复性使用,研究改进磨削力的数学模型,以此分析磨削参数对磨削力的影响。磨削力数学模型以力的加速度为核心,使用加速度规测量磨削加工时所产生的振动量,将振动加速度测量值、磨削力模型及牛顿第二运动定律进行计算求得磨削常数,将磨削常数及加工时磨削参数代入磨削力模型得到理论值,与实验结果进行验证并探讨实验值与理论值的误差大小。实验结果表明:实际测量的磨削力造成的振动加速度值与改进的磨削力模型的预测值结果误差相当接近,改进的磨削力数学模型是可行的。

Improvement and Experiment of Mathematical Model of Grinding Force in Flat Grinding

In order to realize the repeatability of the best grinding parameters for operators, a mathematical model is studied to improve the grinding force, based on which the effect of grinding parameters on the grinding force is analyzed. Firstly, the mathematical model of grinding force was centered on the acceleration of force. Secondly, the acceleration gauge was used to measure the amount of vibration generated during grinding process. Thirdly, the vibration acceleration measurement, grinding force model and Newton second law of motion were calculated to obtain the grinding constants. Finally, the grinding constants and grinding parameters were substituted into the grinding force models to compute the theoretical values. The results were verified by experimental results, and the error between experimental values and theoretical values was also discussed. The experiments show that the actual vibration acceleration measured by grinding force is quite close to the predicted result of the improved grinding force model. And the improved mathematical model of grinding force is feasible.