From the course: SOLIDWORKS: Modeling Gears

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Metric spur gear equations

Metric spur gear equations - SOLIDWORKS Tutorial

From the course: SOLIDWORKS: Modeling Gears

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Metric spur gear equations

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- [Instructor] Before we begin modeling our Spur gear, let's go over some of the main equations that we'll need. As you recall, the module is the measure of the tooth size for metric gears. It's calculated by dividing the pitch circle diameter by the number of teeth. Based on your knowns and unknowns, you can also manipulate the same equation to calculate the number of teeth if you knew what the pitch circle diameter and the module were. And if you know the module and number of teeth, you can use the same equation to calculate the pitch circle diameter. The center point distance between two mating gears is simply the two gears respective pitch diameters added together and divided by two. The outer diameter is calculated by taking the number of teeth, adding two and then multiplying it by the module. The circular pitch is simply PI times our module. The circular tooth thickness is our circular pitch divided by two and…

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