基于过渡模型的连续小线段前瞻插补(英文)

为了高速插补连续小线段轮廓,开发了一种新型的速度规划算法。该算法首先根据小线段的变化规律定义了线段过渡模型,以描述连续小线段轮廓的曲率特征;然后根据曲率特征优化了小线段各衔接点的速度;最后对衔接点速度进行三次样条插值处理以生成连续光滑的速度曲线。该算法使得速度跟随曲率的变化,即由轮廓的低曲率部分向高曲率部分过渡时减小速度,由轮廓的高曲率部分向低曲率部分过渡时增大速度,从而即保证了加工精度,也提高了加工效率。

A look-ahead interpolation of continuous small lines contour based on transition patterns

To implement high-speed interpolating of continuous small lines contour(CSLC),a novel feedrate planning scheme is proposed.The scheme consists of three closely interrelated steps.First,transition patterns are defined based on the change law of lines to describe the curvature characteristic of the contour.Second,turning feedrate is optimized according to the curvature characteristic.Third,feedrate planning is performed based on the cube fit of turning points.The scheme enables feedrate to change inversely wi...