Thread: Lead Screw or Linear Motion Source
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Unread 12-02-2006, 01:51
Dillon Compton Dillon Compton is offline
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FRC #1391 (Metal Moose)
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Join Date: Jan 2005
Rookie Year: 2004
Location: Malvern, PA
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Re: Lead Screw or Linear Motion Source
Last year my team ran the first stage of our arm extension (about 50 inches, I believe) on a "lead screw" that was just a piece of 5/8 threaded rod. We used a nut with an inch outer diameter, and tied it into a home-made bracket(I forget how). Driven by a CIM motor, this lead screw was used for the entire competition season, and still works today. Other than a single design modification we made on the first day of philly regional and the occaisonal(read: twice since we built the thing) application of a lubricant, we have not touched the thing since we installed it in mid-january 2005. The screw runs to full extension in under 4 seconds.


That was really just a convoluted way to say that threaded rod works fine, just use a hardy nut and I suggest coupling the motor shaft directly to the rod (mcmaster sells shaft couplings that will stage the sizes for you).

Good luck!

Dillon Compton
Team 1394
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