Molded line representation method of steel ball speed reducer cycloid disc

The invention discloses a molded line representation method for a cycloid disc of a steel ball speed reducer, and the method comprises the following steps: obtaining a cycloid disc data model; determining node vectors of cycloid disc molded line data points according to the data model; inversely solving a control vertex of the NURBS interpolation curve by utilizing the node vector of the data point; obtaining an interpolation spline curve output result; and performing curve fitting accuracy error verification. The method has the beneficial effects that the molded line of the cycloid plate canbe locally modified, and the local characteristics of the molded line are improved on the premise that the performance in other intervals is not influenced, so that the molded line of the cycloid plate is optimized. 本发明公开了一种钢球减速器摆线盘的型线表示方法，包括以下步骤，获取摆线盘数据模型；根据所述数据模型确定摆线盘型线数据点的节点矢量；利用数据点的节点矢量反求得出NURBS插值曲线的控制顶点；得到插值样条曲线输出结果；曲线拟合精度误差验证。本发明的有益效果：能够对摆线盘型线进行局部修改，在不影响其他区间内性能的前提下，改善型线的局部特性，从而优化摆线盘的型线。