渐开线螺旋齿轮成形磨削砂轮的修整

Form Grinding Wheel Dressing for the Involute Helical Gear

针对渐开线螺旋齿轮磨削加工要求,对磨削螺旋齿轮的砂轮进行研究。基于螺旋面形成的基本思路,得出直母线作螺旋运动形成的渐开螺旋面方程,建立了渐开线螺旋齿轮的数学模型。提出了通过MATLAB软件编程计算磨削砂轮轴向截形的方法。根据截形数据,提出了通过CNC砂轮修整器修整砂轮的方法,对砂轮进行数控修型。用修整好的砂轮对渐开线螺旋齿轮进行数控成形磨削加工。计算结果表明磨削法与其他方法相比可显著提高螺旋齿轮的齿形精度和表面质量,提高磨削效率。

For the grinding processing requirement of the involute helical gear,the grinding wheel for the involute helical gear is studied. Based on the forming principle of the helicoid,the equation of the involute helicoid which is formed by the straight generatrix of the spiral movement is derived,and the mathematical model of the involute helical gear has been established. The axial section of Grinding wheel for grinding Involute helical gear is calculated by MATLAB programs. According to the sectional shape data,the method of dressing grinding wheel by CNC grinding wheel dresser is putted forward to trim the grinding wheel,then the finished grinding wheel is carried out on the CNC form grinding processing for the involute helical gear.The results showthat forming grinding can improve the helical gear profile precision and surface quality more significantly than other methods. It can also improve the grinding efficiency.