From the course: SOLIDWORKS: Modeling Gears

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English spur gear equations

English spur gear equations - SOLIDWORKS Tutorial

From the course: SOLIDWORKS: Modeling Gears

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English spur gear equations

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- Before we start modeling a gear it's important that you have a basic understanding of how gear equations differ between the metric and English system. We'll quickly go through the English for gear equations here. The diametrical pitch is the English equivalent to the metric module. As you can see it's actually the inverse of the module equation with the number of teeth divided by the pitch circle diameter. The number of teeth using that same equation can be derived as equal to the diametrical pitch times the pitch circle diameter. And of course you can also get the pitch circle diameter by taking the number of teeth and dividing it by the diametrical pitch. Just manipulating that same equation based on your knowns and unknowns. The center point distance equation is the same between English and metric. So, it still the sum of the mating gears pitched diameters divided by two. The English outer diameter is…

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