基于盘形刀具的弧齿锥齿轮齿顶倒棱加工方法研究  

Research of Chamfering Tooth Crest of Spiral Bevel Gear based on Disc Cutter

作　　者：魏巍[1] 张连洪[2] Wei Wei;Zhang Lianhong(School of Mechanical Engineering,Yangtze University,Jingzhou 434023,China;Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education,Tianjin University,Tianjin 300072,China)

机构地区：[1]长江大学机械工程学院,湖北荆州434023 [2]天津大学教育部机构理论与装备设计重点实验室,天津300072

出　　处：《机械传动》2018年第7期14-18,共5页Journal of Mechanical Transmission

基　　金：国家自然科学基金(51275347);长江大学青年基金(2015cqn47)

摘　　要：为了解决弧齿锥齿轮齿顶倒棱效率低精度差的问题,提出一种采用盘形刀具进行齿顶倒棱的方法。创建包含齿顶倒棱特征的齿轮几何模型,以单个齿槽两侧棱线为扫描路径创建圆柱扫描体。以两圆柱扫描体的相交线为基础,确定倒棱加工时盘形刀具与齿轮的空间位置关系,进而计算倒棱加工参数。创建包含机床、盘形刀具和齿轮的仿真加工环境,设定多组加工参数后分别完成齿顶倒棱仿真加工。测量齿顶倒棱的形状误差数值,以形状误差最小为依据,确定加工参数的最优值。这种方法在弧齿锥齿轮铣齿机上安装盘形刀具即可实现,无需专用机床,而且相比于其他形状刀具,盘形刀具参与切削部分的长度较长,可有效提高刀具寿命。In order to solve low accuracy and inefficiency of tooth crest chamfering for spiral bevel gear,a method of tooth crest chamfering by using disc cutter is proposed. Gear solid model with the chamfering feature is established,crest lines are used as sweep path to create cylinder sweep volumes. Position relationship between gear and disc cutter is determined based on intersecting lines of cylinder sweep volumes,then machining parameters of chamfering are calculated. Simulation environment for chamfering is established including machine,disc cutter and gear,some groups of machining parameters are set to simulate machining process. The shape errors of chamfering are measured,optimized machining parameters are determined by aiming the minimization of shape errors. This method can be realized by installing disc cutter on gear milling machine which means special purpose machine is unnecessary. The disc cutter has longer cutting circumference compared to other shape cutter,which can prolong cutter life effectively.

关 键 词：弧齿锥齿轮 盘形刀具 倒棱 仿真加工 形状误差 

分 类 号：TG61[金属学及工艺—金属切削加工及机床]