单圆头留磨滚刀齿形参数设计与分析  

Parameter Design and Analysis of Tooth Profile of Single-thread Round-head Pregrinding Hob

作　　者：黄灵 毛应才 王聪 高宏兴 

机构地区：[1]宁波东力传动设备股份有限公司,浙江宁波315033

出　　处：《机械传动》2011年第10期89-91,共3页Journal of Mechanical Transmission

摘　　要：重载齿轮以硬齿面齿轮为主,齿面硬度在HRC57~61,一般工艺为：滚齿—渗碳淬火—磨齿。为消除热处理变形并保证齿面磨削量,热前滚齿所用滚刀多采用留磨滚刀。渗碳淬火后磨削齿形要求满足：有效渐开线的起始点直径等于或小于理论有效渐开线起始点直径,避免磨削台阶的出现。本文对单圆头留磨滚刀参数进行阐述,采用软件对滚刀及零件进行理论模拟加工来优化滚刀设计参数。Nowadays most of the heavy-duty gears are case-hardened gear of surface hardness of HRc57~61,and the general process is hobbing-carburizing and quenching-grinding.With a view of distortion after heat-treating,a flank allowance should be preserved,and the pregrinding hob will be adopted.The tooth profile after grinding should assure that the actual form diameter may not exceed the theoretical form diameter;therefore the grinding steps could be avoided.The parameters of single-thread round-head pregrinding hob are summarized,and based on the model cutting process of the workpiece,the hob parameters will reach the optimum design.

关 键 词：单圆头留磨滚刀 齿形设计 参数分析 设计校验 硬齿面齿轮 

分 类 号：TG721[金属学及工艺—刀具与模具]