行星齿轮传动比怎么计算?我这里有一个行星齿轮,不知该如何计算传动比? 已知中间齿轮15齿,三个行星齿都是20齿,最外的大

我英语能耐一般,不过希望对你有用!
This article from the small tooth number difference planetary gear drive theory, introduces the development history of ring reducer, which also introduced some scholars on the ring reducer research. This paper focuses on tricyclic and double ring gear reducer transmission principle, body types, as well as on their way to overcome dead point position, compares the similarities and differences.This paper focuses on the research of Double-ring Gear reducer, using PRO / E software on the double ring gear reducer were accurate 3D modeling, and all the parts are assembled into a whole. In order to verify the gear parameter selection is reasonable, the assembly end of the double ring gear reducer for interference checking, and the movement simulation animation, more clearly see the motion characteristics of Double-ring Gear reducer. Based on the double-loop reducer of stress analysis, found that the research object of this paper has some shortcomings, the research object of this paper is to put forward to modify an opinion, and on the modified structure of the theory of stress analysis, the stress variation.

不大明白你的意思
是不是动力从行星轮架输入,太阳轮不动,齿圈输出?
传动比=输入转速/输出转速

谢谢48824305 ：我的减速机是太阳轮齿数Z=40,行星轮齿数Z=40,齿圈齿数Z=120,三个行星轮均布,都是标准齿轮.是否合理.查看原帖

如果你说的是辛普森式单排行星齿轮变速机构.
太阳轮1为主动件,行星架3为从动件,齿圈2固定,有：
i13=n1/n3=1+a=1+Z2/Z1
（Z1、Z2分别为太阳轮、齿圈的齿数,a为齿圈与太阳轮的齿数比）