22.322 Mechanical Design II Spring 2013.

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22.322 Mechanical Design II Spring 2013

Note how planet gear orbits around sun gear Lecture 12 Planetary Gear Trains The conventional gear trains described in the previous lectures are all one-degree-of-freedom devices. Planetary gear trains are two-DOF devices  two inputs are needed to obtain a predictable output. Planetary gear trains are used because they can obtain very large or small gear ratios and are able to transmit more power than ordinary gear trains. Note how planet gear orbits around sun gear

Lecture 12 The Formula Method Usually an input Usually an unknown

Lecture 12 The Formula Method

Lecture 12 The Formula Method

Lecture 12 The Formula Method

Lecture 12 The Formula Method

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