===== 啮合圆 =====

一对齿轮在啮合时的各个齿轮的[[齿轮知识:齿轮术语集:节圆|节圆]]叫做啮合圆。齿轮的啮合浅或者深时，啮合圆也会随之变化。

{{ :gear:nomenclature:meshing-of-profile-shifted-gears.jpg?nolink | 啮合圆直径 }}

[[齿轮知识:齿轮ABC基础篇:齿轮的变位|变位齿轮]]的啮合 ( x1 = +0.6, x2 = +0.36 )

d1, d2 : 分度圆直径\\ dw1, dw2 : 啮合圆直径

----
来源：[[https://khkchilun.com/gearknowledge/|KHK 齿轮知识]] · [[https://khkchilun.com/gearknowledge/gear-nomenclature/intermeshing-pitch-circle.html|原文链接]]