基于MMR的三角网格曲面五轴加工刀轨生成算法  

5-axis Tool Path Generation Algorithm for Triangular Mesh Surface Machining Based on Maximal Material Removal Rate

作　　者：陈晓兵[1,2] 廖文和[1] 戴宁[1] 吴海兵[3] 陈前亮[3] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]淮阴工学院计算机工程学院,淮安223003 [3]淮阴工学院数字化制造技术重点实验室,淮安223003

出　　处：《机械科学与技术》2013年第7期1065-1068,1073,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家科技支撑计划项目(2009BAI81B02)资助

摘　　要：为了提高三角网格曲面五轴加工的加工效率,提出了基于最大材料去除率(maximal materialremoval rate,MMR)的平底刀五轴加工刀轨生成算法。首先计算无曲率干涉且具有最大材料去除率的网格曲面五轴加工的刀具方位角;然后在确定网格曲面可能干涉区域的基础上,提出刀触点处干涉性假设,并以最大材料去除率、刀具无曲率干涉和全局干涉为约束条件,采用二分法确定具有最大材料去除率的无干涉刀具方位角;最后采用截面线法生成三角网格曲面MMR平底刀五轴加工刀轨。通过实验验证了采用文中算法生成的刀轨进行加工能够获得较高的加工效率和表面质量。In order to enhance the efficiency of triangular mesh surface machining , we propose the 5-axis tool path generation algorithm based on maximal material removal rate （MMR）. The cutter orientation angles of mesh surface without curvature interference are calculated. After determining the possible interference region of the mesh sur- face, we propose the cutter contact points＇ interference hypothesis, and the cutter orientation angles with MMR but without interference are determined with the dichotomy method under the constraints of MMR but without curvature and global interference. Finally, the MMR tool paths of a flat-end cutter for triangular mesh surface machining are generated with the section line method. The experimental results indicate that the 5-axis tool path generation algo- rithm can achieve higher machining efficiency and surface quality.

关 键 词：三角网格曲面 最大材料去除率 无干涉 刀具方位角 五轴加工刀轨 

分 类 号：TP391.73[自动化与计算机技术—计算机应用技术]