基于曲率圆的恒磨除率变速磨削模型分析

Speed Grinding Model Analysis of Curvature-based Circle of Cnstant Removal Rrate

汽车凸轮轴加工的精度主要取决于它的轮廓曲线,要获得好的轮廓精度和表面品质,在磨削中采用恒定磨削线速度,使工件速度根据轮廓曲线的变化而变化,这样可以达到很好的轮廓品质,这个理论已经通过加工试验得到了很好的验证。但是随着技术的发展和凸轮轮廓数学建模的不断完善,现在又向着恒定磨除率的方向发展,理论研究表明可以获得更高的加工精度,利用凸轮的曲率圆方程,建立了恒磨除率模型,根据实际加工条件进行速度分析并利用MATLAB进行了仿真。

the machining precision of the camshaft mainly depends on its contour curve. In order to obtain the good outline and the surface quality, a constant grinding of speed is used to change the workpiece speed with the contour curve in the grinding. This theory is verified through the machining test perfectly, however with the development of technology and mathematical model of the cam, it is directed towards the constant removal rate. Theoretical studies show that the higher precision cam can be machined. This paper uses the cam curvature equation to establish can model of the grinding removal constant rate. The speed is analyzed based on the actual processing conditions and the model is simulated by matlab.