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为便于连接岛中含湖型截面上的环切刀轨,根据偏置环的旋向以及是否从外轮廓偏置而来,将其划分为CCW(逆时针)I型、CCW II型、CW(顺时针)型3种.从减少开槽切削,降低刀具负荷的原则出发,确定CCW I型与CCW II型从内环往外加工、CW型从外环往内加工的方法.通过包含关系分析与环间距离分析,确定3类环的具体构成以及环与环之间的父子关系.在此基础上,通过支链搜索获得多条局部支链,根据避免过切削的原则确定支链中各偏置环上的相应连接点.最后,通过支链与支链之间的环序号比较,判断是否合并,从而输出加工路径.对于粗加工,增加残区补加工刀轨.该方法避免了树型结构与指针的使用,不涉及复杂的深度优先遍历,算法简单,思路清晰,便于实施.木雕实验证实了该方法的可行性.
In order to facilitate the connection of the circular cutter path on the lakeshaped section in the island, it is divided into CCW (Counterclockwise) Type I, CCW Type II, CW, according to the direction of bias ring rotation and whether it is offset from the outer contour (Clockwise) type 3. Starting from the principle of reducing grooving and reducing the tool load, the methods of CCW I and CCW II machining from the inner ring to the outer ring and the CW type from the outer ring are determined, And ring distance analysis to determine the specific composition of the three types of rings and the relationship between the ring and the ring between the father and son.Based on this, through the branch search to obtain a number of local branches, according to the principle of avoiding overcut to determine the branch The corresponding connecting point on the bias ring, and finally, comparing the ring numbers between the branches and the branches to judge whether to merge and output the machining path. The use of structure and pointer does not involve complex depth-first traversal, the algorithm is simple, the idea is clear and easy to implement.The wood-carving experiment proves the feasibility of the method.