EML2322L-Mechanical Power Transmission

EML2322L-Mechanical Power Transmission - EML 2322L...

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EML 2322L Designing Hubs (Mechanical Power Transmission) Hubs are used to transmit mechanical power from a drive motor by coupling it to an output such as a wheel or an arm. The picture above shows an exploded view of a typical hub/motor/wheel assembly. In this picture the hub slides over the output gear of the drive motor and is secured using set screws. The wheel is pressed onto the hub and can be secured in several ways. Below is a more detailed picture of the hub used in the above assembly.
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Things to Consider When Designing Hubs: 1. Attaching the hub to the motor 2. Attaching the wheel or other power transmission device to the hub 3. Transmitting power through the hub 1. Attaching the hub to the motor The first step in designing a hub is determining how it will be attached to the drive motor; this is done by measuring the output shaft of the motor and designing the hub to fit. The hub shown previously is designed so the bore on one side is a line fit with the outside diameter of the gear on the drive motor; this allows the hub to slide onto the drive gear of the motor without excessive clearance. 2. Attaching the wheel or other power transmission device to the hub The second step in designing a hub is determining how it will be attached to the wheel or other power transmission device. Wheels, for example can be attached in several ways. The two most common ways are to mate the hub to the center hole in the wheel, or to mate the hub to the face of the wheel. The hub shown previously is designed so it presses into the center hole of the wheel with an interference fit. The wheel hub manufactured in lab during the first part of the semester is designed to mate to a wheel face. 3. Transmitting the power through the hub
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This note was uploaded on 10/18/2011 for the course EML 2023L taught by Professor M.braddock during the Spring '11 term at University of Florida.

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EML2322L-Mechanical Power Transmission - EML 2322L...

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