面齿轮磨削力建模与工艺影响分析

建立了碟形砂轮磨削面齿轮的理论模型.应用切斜面磨削理论,将不规则的曲面齿面等效转化为平面,结合Gleason点接触椭圆等特征,方便对磨削力进行分析求解.将砂轮上的工作磨粒数均匀划分成单颗磨粒成屑力与滑擦力个体,精确阐述砂轮在磨削面齿轮时的磨削力.经过实验结果与仿真数值的比照分析得到磨削力对磨削用量的影响参数,实验结果表明,砂轮转速与面齿轮磨削力成反比例关系,工件进给速度与磨削速度与面齿轮磨削力成正比例关系.通过磨削力的实验结果与仿真数值对比分析,可得出最大相对误差为１７.９％,此数据证明了建立的模型与实验结果较为契合,能够很好地反映磨削力与磨削用量之间的关系变化,在提高面齿轮磨削精度与工艺上提供了基础的理论依据.

Modeling and Processing Analysis of Grinding Force of Face Gear

The theoretical model of grinding face gear with disc wheel is established．Based on the theory of bevel grinding , the irregular curved tooth surface is equivalently transformed into a plane．Combined with the characteristics of Gleason point contact ellipse , it is convenient to analyze and solve the grinding force．The number of working abrasive grains on the grinding wheel is evenly divided into individual chip forming force and sliding friction force , and the grinding force of grinding wheel in grinding face gear is precisely described． By comparing the experimental results with the simulation results ,the influence parameters?of grinding force on grinding parameters are obtained ．The results show that the grinding wheel speed is inversely proportional to the grinding force of face gear , and the feed speed of workpiece is positively proportional to the grinding force of face gear．Compared with the experimental results of grinding force , the maximum relative error of simulation value is １７.９％．This data proves that the established model is highly consistent with the experimental results , which can well reflect the change of the relationship between grinding force and grinding amount , and provides a theoretical basis for improving the grinding accuracy and technology of face gear．