The approach includes : obtain cutter location points from cutter contact points ; interference pretreatment by convex box of data cloud and reducing check area ; interference detection and tool - position correction based on data cloud 通过计算点云模型的曲率,确定切削步长和行距,采用基于点云的干涉检查模型,推导出干涉处理的解析式,得到了无干涉加工刀轨。