一种钛合金圆弧铣刀的设计及切削性能研究  

Design and Cutting Performance of a Titanium Alloy Arc Milling Cutter

作　　者：张善晶 李增彬[1] 刘道明 ZHANG Shan-jing;LI Zeng-bin;LIU Dao-ming(Department of Machinery Manufacturing,Xinxiang Vocational and Technical College,He'nan Xinxiang 453000,China;School of Mechanical and Power Engineering,Zhengzhou University,He'nan Zhengzhou 450001,China)

机构地区：[1]新乡职业技术学院机械制造系,河南有新乡453000 [2]郑州大学机械与动力工程学院,河南商郑州450001

出　　处：《机械设计与制造》2024年第11期210-215,共6页Machinery Design & Manufacture

基　　金：2021年产学合作协同育人项目(21A690026)。

摘　　要：针对钛合金加工难度问题,研究了一种新型大曲率刃的圆弧铣刀的设计及切削性能。首先采用微分几何方法建立了圆弧铣刀轮廓曲面的几何模型和螺旋切削刃线的数学模型,引入砂轮坐标与工件坐标的转换矩阵,推导了凸轮前表面磨削时砂轮轨迹方程,并通过对自行设计的圆弧铣刀进行了精度测试。最后通过圆弧铣刀和球头铣刀对TC4钛合金进行侧铣削试验对比研究,得到了两种情况下的铣削力、磨损形貌和加工表面质量的变化规律。结果表明与球头铣刀相比,圆弧铣刀能有效降低主铣削力,提高铣削的稳定性,具有磨损速度慢的特性。Aiming at the difficulty of machining titanium alloy,the design and cutting performance of a new arc milling cutter with large curvature edge are studied.Firstly,the geometric model of the contour surface of the circular arc milling cutter and the mathematical model of the spiral cutting-edge line are established by using the differential geometry method.The transformation matrix between the grinding wheel coordinate and the workpiece coordinate is introduced,and the grinding wheel trajectory equation during the grinding of the front surface of the cam is deduced.The accuracy of the self-designed circular arc milling cutter is tested.Finally,the side milling experiments of TC4 titanium alloy with arc milling cutter and ball end milling cutter are compared,and the variation laws of milling force,wear morphology and machined surface quality under the two conditions are obtained.The results show that the milling speed of the main cutter is lower than that of the milling head,and the milling force of the main cutter is lower than that of the milling head.

关 键 词：圆弧铣刀 钛合金TC4 铣刀的设计 切削性能 表面质量 

分 类 号：TH16[机械工程—机械制造及自动化] TG714[金属学及工艺—刀具与模具]