Parallel gears - Geometric study | Techniques de l'Ingénieur

Overview

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AUTHOR

Georges HENRIOT : Arts et Métiers engineer - Former Technical General Manager of Engrenages et Réducteurs

INTRODUCTION

A gear is a device that connects two shafts, transmitting rotational motion from one of the shafts (the driving or motor shaft) to the other (the driven shaft), with a constant ratio of angular speeds.

Depending on the relative position of the two shafts to each other, we have three main gear classes:

Parallel gears: the two axes are parallel (figure 1 a).

Concurrent gearing: the two axes intersect along their extensions (figure 1 b).

Left-hand gear: the two axes occupy any relative position; they are neither parallel nor intersecting (figure 1 c).

Note :

This section on gears is made up of several articles.

The first two articles deal with parallel gears, the first being devoted to geometrical studies, the second to tooth corrections. .

In the following article, we'll be taking a closer look at left-hand and right-hand gears. and, in a fourth section, loads on gears and strength calculations. .

The final section deals with manufacturing methods and planetary gear trains. .