| Attaching a Servo Horn to the Omni Wheel |
Last Modified: 2006-10-20
This idea demonstrates a way to securely attach a servo motor to a omni wheel. It is a low cost way to non destructively mount the wheel to a servo motor mounting horn. You will need the following parts:
Most of these parts can be found at home building supply stores such as Lowes, Home Depot, etc. The 2-56 machine screws and hex nuts can be found at Radio Shack. Total estimated cost for all the parts is around $16.00.
Use the T-Nut as a template to drill the holes in the servo horn. Drill holes with a #48 size drill. Then use the 2-56 screws to fasten the T-Nut to the servo horn as shown below. Also place the 5/16" copper finishing washer over the T-Nut so that the wheel hub will have a flat surface to rest against. Then place the 5/16" internal splined tooth washer over the T-Nut, so the wheel will not come loose.
Cut the 1/4"-20 nylon screw to a length of 1-3/8". Place the hub of the wheel over the T-Nut in step(1) as shown below:
Insert the second T-Nut into the front of the wheel hub.
Finally, place the 5/16" internal splined tooth washer on the shaft of the nylon screw. Then, thread the nylon screw into the second T-nut and into the first T-Nut as shown below and you are finished with the modification.
Thanks to Abraham L. Howell for contributing this example and images!
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