球头铣刀铣削轮廓曲面的有效切削速度分析
2019-11-15
作者：杨炬，胡小秋，程寓，方静弦
单位：南京理工大学；工信部高端装备制造技术协同创新中心
摘要：对球头铣刀加工轮廓曲面的有效速度进行研究，考虑到球头铣刀倾角变化和工件曲率半径变化，建立了球头铣刀切削凹凸轮廓曲面的干涉模型。采用相对加工倾角的方式解决了高角度铣削的干涉问题，并根据实际有效切削直径得到凹凸轮廓曲面的有效切削速度。研究结果表明:采用小切入角度和大切出角度切削加工曲面时，有效切削速度较小；铣削加工凹曲面时受切深影响较大，凸曲面主要受前后刀轨影响较大。
关键词：球头铣刀；轮廓曲面；曲率半径；刀具干涉；有效切削速度
中图分类号：TG714；TH162.1文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.11.010
Study on Effective Cutting Speed of Milling Contour Surfaces of
Ballend Milling Cutter
Yang Ju，Hu Xiaoqiu，Cheng Yu，Fang Jingxian
Abstract:The effective cutting speed of machining contour surfaces is studied with ballend milling cutter in this paper.Considering the variation of the inclination angle of the ballend milling cutter and the radius of the curvature of workpiece，the interference model of concave and convex contour surface milling by ballend milling cutter is established.The interference problem of highangle milling is solved by means of the relative machining inclination angle，and according to the actual effective cutting diameter，the effective cutting speed of machining the concaveconvex contour surface is obtained.The research results show that the effective cutting speed is small when milling the curved surface with a small plunging angle and a large cuttingout angle，and the concave surface is more affected by the depth of cut during the milling process，and the convex curved surface is mainly affected by the front and rear tool rails.
Keywords:ballend milling cutter； contour surface；radius of curvature；tool interference；effective cutting speed