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Compound Train Example

To obtain the gear ratio, TV = (output rate)/(input rate), of a compound gear train, an illustrated example is presented in this section.

The procedure is to start with the input, and to calculate how the angular velocity propagates through each successive intermeshing pair of gears based upon the number of teeth.

Consider a compound gear train below.

Suppose that the input gear speed (rotation rate) is 1600 rpm clockwise, i.e.,

The gear ratio between w1 and W2 is inversely proportional to the teeth numbers, n, i.e.,

Hence,

where the negative sign represents for counter-clockwise direction.

Similarly,

and

The final gear ratio TV can thus be obtained,

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.