沿曲面交线多坐标数控加工的算法研究

 分析了曲面交线加工中刀具的偏置类型，提出了新的交线加工刀位轨迹生成算法。该算法利用曲面跟踪求交算法计算两曲面交线，并根据交线处曲面局部微分几何性质推算刀具的初始位置，然后采用牛顿迭代算法精确刀位。该算法的优点是能够精确控制刀具与曲面的加工误差，可处理单支点、双支点偏置情况下球头刀、平底刀、圆角刀的交线域加工，算法稳定、统一。

STUDIES ON THE ALGORITHM FOR 5 AXIS MILLING OF INTERSECTION CURVE OF SCULPTURED SURFACES

The tool offsetting status in the milling was analysed, and a new algorithm for cutter locations generation was presented. Tracing method was used to calculate the intersection curve between two surfaces in the algorithm, initial cutter locations can be derived from the points on the intersection curve,and Newton iteration can be used to accurately determine the cutter location finally.The advantage of the algorithm is that the machining error can be controlled accurately,and not only ball end cutter,but also flat end cutter can be processed by the algorithm.