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22.322 Mechanical Design II. Spring 2013. 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.
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22.322 Mechanical Design II Spring 2013
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