作　　者： ; ; ; ;

机构地区： 广东工业大学机电工程学院

出　　处： 《Transactions of Nanjing University of Aeronautics and Astronautics》 2007年第2期164-169,共6页

摘　　要： 在铣削型腔尖角加工过程中,当环切法加工的行间距离比较大时,型腔尖角处将会出现加工残余。由于刀具与工件的接触线增加,使得尖角处铣削力增大。因此,采用了双圆弧过渡来处理型腔中的尖角,该方法能保证以尽可能大的行距走刀,缩短了加工时间,提高了加工效率,同时还可以清除尖角处的残余留量。尖角处刀具轨迹进行合理优化后,刀具沿着改进的轨迹快速运行,满足了高速铣削型腔的加工要求。最后,实验验证了该方法的有效性。 In milling around sharp corners, residual materials are left at sharp corners when the stepover is extremely long in the contour-parallel tool path. Milling force at the sharp corner rises momentarily due to the increase of the cutter contact length, thus shortening the tool life and leading to machine chatter, even cutter breakage. Then a tool path improvement method by inserting biarc transition segments in the contour-parallel tool path is proposed for milling the pocket. Using the method, the cutter moves along the biarc transition tool path. And the corner material is removed. The improved tool path is continuous for clearing residual materials at the sharp corner. Finally, the machining experiment validates the proposed method.

关 键 词： 高速铣削 尖角 轨迹优化

领　　域： [自动化与计算机技术] [自动化与计算机技术]