how do I get linear motion from a servo?

markallen

Hi, I'm trying to push an object back and forth about 3 inches, and I'd like to use a servo as the motive force. I understand the concept of rack and pinion, but I don't have an idea about how to assemble one in a concrete manner. Is it possible to find or buy some kind of assembly that the servo could be attached to? I'm hopefully looking for something that's somewhat "plug and play".

Bruce Bates

Mark -

The following unit will travel 4.5 inches in either direction:
http://www.herbach.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=HAR&Product_Code=TM95MEC2814&Category_Code=MEC

Here are a dozen or more pages of various surplus mechanical parts, gears, chains, etc:
http://www.herbach.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=HAR&Category_Code=MEC

Regards,

Bruce Bates

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bulkhead

You can hook up an arm to the servo's arm, held on by two of these connectors: www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXJPT7&P=ML

You can get them from hobby shops, and the threaded rods from homedepot.

If you need purely linear motion, you can use some kind of rail system to guide the movement.

ktekx

This linear servo conversion kit seems like it has a rather short travel, but I think you can use the idea and create your own with a longer travel. store.yahoo.com/e-clec-tech/lisekits.html

Steve Joblin

You can just use a Linear Servo like this.. http://www.bpesolutions.com/productimages/mec.parts/linservo.pdf



Post Edited (Steve Joblin) : 2/24/2006 1:41:14 AM GMT