公开(公告)号：US4706201A

公开(公告)日：1987-11-10

申请号：US776205

申请日：1985-09-09

申请人： Hajimu Kish ,  Masaki Seki ,  Takashi Takegahara ,  Yasushi Onishi

发明人： Hajimu Kish ,  Masaki Seki ,  Takashi Takegahara ,  Yasushi Onishi

IPC分类号： B23Q15/00 ,  B23C3/00 ,  B23H7/20 ,  B23Q15/013 ,  G05B19/4093 ,  G05B19/41

CPC分类号： G05B19/41 ,  G05B2219/49381 ,  G05B2219/49392

摘要： The present invention provides an area cutting method for cutting the interior of an area (AR) bounded by a closed curve (OFC'). The area cutting method includes the steps of: (1) calculating a centroid (W) of an area bounded by the closed curve; (2) determining whether each line segment (L1-L10) connecting the centroid with each vertex (P1-P10) of the area intersects the closed curve; (3) partitioning each line segment into a predetermined number of partitions if the line segment does not intersect the closed curve, and (4) performing area cutting by moving a tool along plural closed paths (CPT1, CPT2 . . . ) each of which is obtained by connecting corresponding ones of the partitioning points of respective line segments. If at least one line segment intersects the closed curve, the method includes the steps of: partitioning the area (AR) into a plurality of regions; (5b) calculating the centroid of each partitioned region; (5c) partitioning each line segment connecting the centroid with each vertex of the partitioned region corresponding to the centroid into a predetermined number of partitions; (5d) finding plural closed curves, for each and every partitioned region, obtained by connecting corresponding ones of the partitioning points of the line segments; and (5e) performing area cutting by successively moving the tool along each closed path.

摘要翻译： PCT No.PCT / JP85 / 00008 Sec。 371日期：1985年9月9日 102（e）1985年9月9日PCT 1985年1月10日PCT PCT。 第WO85 / 03023号公报 日期：1985年7月18日。本发明提供一种用于切割由闭合曲线（OFC'）限定的区域（AR）的内部的区域切割方法。 区域切割方法包括以下步骤：（1）计算由闭合曲线限定的区域的质心（W）; （2）确定将质心与区域的每个顶点（P1-P10）连接的每个线段（L1-L10）是否与闭合曲线相交; （3）如果线段不与闭合曲线相交，则将每个线段划分成预定数量的分区，以及（4）通过沿多个封闭路径（CPT1，CPT2 ...）移动刀具来执行区域切割 通过连接各个线段的相应的分割点来获得。 如果至少一个线段与闭合曲线相交，则该方法包括以下步骤：将区域（AR）划分成多个区域; （5b）计算每个划分区域的质心; （5c）将连接质心的每个线段与对应于质心的分割区域的每个顶点分隔成预定数量的分区; （5d）通过连接线段的对应的分割点而获得的每个分割区域的多个闭合曲线; 和（5e）通过沿着每个封闭路径连续地移动工具来执行区域切割。