球面渐开线齿形弧齿锥齿轮精密切齿方法  

Precision Cutting of Spiral Bevel Gear With Spherical Involute Tooth Profile

作　　者：呼咏[1] 张学成[1] 杨兆军[1] 张军[1,2] 

机构地区：[1]吉林大学机械科学与工程学院,长春130025 [2]空军航空大学航理系,长春130022

出　　处：《北京工业大学学报》2011年第5期641-647,共7页Journal of Beijing University of Technology

基　　金：吉林省科技支撑计划重点资助项目(20080346)

摘　　要：为了对具有球面渐开线齿形的收缩齿制弧齿锥齿轮实现精密切削,在切削形成齿轮齿面时,使工件的基圆锥与假想球面大圆平面做纯滚动运动,并以位于大圆平面上的圆弧曲线为刀刃.圆弧刀刃绕自身回转,基锥、大圆平面和刀刃三者按定比传动关系的回转运动在形成齿面所需要的运动关系的同时,形成切削齿面所需要的切削速度,使刀刃尾端沿齿根切出,避免干涉.设计了球面渐开线齿形弧齿锥齿轮切削试验的装置和刀具,验证了切削方法的正确性、有效性和可行性.结果表明:用合适的圆弧刀刃可以1次切削成形整个齿面,可以实现正确退刀,大、小齿轮及凸、凹齿面可以在一台机床上完成切削加工,且无需更换刀具,所加工的齿轮可以互换并实现定比传动.In order to realize the finish machining of the tapered tooth spiral bevel gear with spherical involute tooth profile,a circular arc on the imaginary great circular plane is taken as the cutting edge to cut the workpiece when the base cone of the gear purely rolls on the great circular plane.The circular cutting edge revolves on its own axis.The kinematic relations to forming the tooth surface of the bevel gear can be achieved by the constant rotational speed ratios among the basic cone,the great circular plane and the cutting edge,and thereby forming the cutting speed and guaranteeing that the end of the cutting edge is kept on the tooth root without interference.The experiment device and the cutting tool for finishing spiral bevel gear with spherical involute tooth profile are designed,and the correctness,validity,and the feasibility of gear cutting method are proved by experiments.The results show that using a proper circular cutting edge can form the whole tooth surface by cutting at one time,accompanied by correct tool retract.Convex surfaces and concave sides of the bull wheel and the pinion can be machined on the same machine tool without changing the cutting tool.The gears machined by this method are interchangeable and can achieve constant speed ratio transmission.

关 键 词：弧齿锥齿轮 切齿方法 球面渐开线 

分 类 号：TH132.41[机械工程—机械制造及自动化]