CAJ | 학술논문

在五轴高档数控加工中，为了提高刀具与加工曲面的碰撞干涉检测速度，在构造层次包围盒时融合 OBB 与胶囊体包围盒的优点，能首先将多数明显不相交物体对快速排除。干涉检测分为粗检测和精检测两个阶段，先采用球包围盒与刀具胶囊体包围盒进行粗检，然后分层OBB 结合工件八叉树OBB的算法，快速检测出可能存在干涉碰撞的叶子节点，在构建OBB和更新OBB方面分别采用“有数据再建立”和“用到再更新”的方法。在包含干涉节点的三角面片和刀具之间采用全局干涉的径向检测和局部干涉的轴向检测，实现详细干涉检测。此方法在VERICUT和MFC中得到很好的验证，充分证明在实际加工中具有高效性、实用性。
재오축고당수공가공중，위료제고도구여가공곡면적팽당간섭검측속도，재구조층차포위합시융합 OBB 여효낭체포위합적우점，능수선장다수명현불상교물체대쾌속배제。간섭검측분위조검측화정검측량개계단，선채용구포위합여도구효낭체포위합진행조검，연후분층OBB 결합공건팔차수OBB적산법，쾌속검측출가능존재간섭팽당적협자절점，재구건OBB화경신OBB방면분별채용“유수거재건립”화“용도재경신”적방법。재포함간섭절점적삼각면편화도구지간채용전국간섭적경향검측화국부간섭적축향검측，실현상세간섭검측。차방법재VERICUT화MFC중득도흔호적험증，충분증명재실제가공중구유고효성、실용성。
In five-axis NC machining, in order to improve the detection rate of collision interference, take the advantages of OBB bounding box and capsule body bounding box when constructing bounding box, can eliminate most obvious disjoint objects first quickly. Interference detection is divided into rough detection and fine detection, first use ball bounding box and tool capsule body bounding box for coarse interference, and then use algorithm by combination layered OBB and workpiece OBB, detect possible collision interfer-ence of leaf nodes quickly. In the construction of OBB and update the OBB respectively by using "if have data then to build" and "if nodes are used then to update" strategy. In order to achieve precise interference detection between leaf node which contains the interference triangles and tool,the article use radial detection when global interference and axial detection when radial interference. This method well validated in VERI-CUT and MFC, also proved that is efficient and practical in the actual processing fully.