小型化、少齿数齿轮传动最少齿数的研究  

Study on the minimum teeth with less teeth gear transmission

作　　者：柳青松[1] 

机构地区：[1]扬州工业职业技术学院机械工程学院,江苏扬州225127

出　　处：《机械设计与制造工程》2015年第5期68-72,共5页Machine Design and Manufacturing Engineering

摘　　要：研究了少齿数齿轮的存在范围和啮合界限点,推导出了少齿数齿轮在利用仿形法加工过程中齿顶变尖和齿槽变尖时的压力角,得出少齿数齿轮的存在范围为:直齿圆柱齿轮最少齿数为3个齿,斜齿圆柱齿轮的最少齿数为2个齿。以小齿轮的齿根干涉限制条件为依据,通过数学变换简化了齿轮变位系数求解模型,以齿轮端面啮合角α't的设计和加工经验数据值域,求解超越方程、选择变位系数组、设计齿轮副参数,应用Y38卧式滚齿机加工了3齿齿轮,证明研究成果具有实用价值。It introduces the existence scope and meshing boundary point on less teeth gear, derives the pressure angle and forms addendum to pointy in copying method processing, obtains the less teeth scope to spur gear in 3 and helical gear in 2. Based on pinion dedendum Interference, it simplifies the mathematical model for selecting modificalion coefficient with mathematical manipulation. With design experience and experience of machining op- eration and empirical data domain, it solves the transcendental equation and obtains the array of modification α- efficient. The example shows that the hobbing process for the three teeth gear at Y38 machine tool has practical value.

关 键 词：存在范围 啮合界限点 变位系数 最少齿数 滚齿加工 

分 类 号：TH12[机械工程—机械设计及理论]