Posted inTheory of Machines
Length of Arc of Contact
Arc of contact is the path traced by a point on the pitch circle from…
Posted inTheory of Machines
Length of Path of Contact
Consider a pinion driving wheel as shown in figure. When the pinion rotates in clockwise,…
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Systems of Gear Teeth
The following four systems of gear teeth are commonly used in practice: 1. 14 ½O Composite…
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Advantages of Cycloidal gear teeth
1. Since the cycloidal teeth have wider flanks, therefore the cycloidal gears are stronger than the…
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Forms of Teeth
Involute Profile The following examples are involute spur gears. We use the word involute because the contour…
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Conjugate Profiles
To obtain the expected velocity ratio of two tooth profiles, the normal line of their profiles must…
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Constant Velocity Ratio
For a constant velocity ratio, the position of P should remain unchanged. In this case, the motion…
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Terms Used in Gears
Fig. 4.2. Spur Gear and Pinion pair Terms used in Gear Addendum: The radial distance between…
Posted inTheory of Machines
Neither parallel nor intersecting shafts
Helical gears may be used to mesh two shaftsthat are not parallel, although they are…