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how to power a circular rail Carriage Answered

Hello. Looking for ideas on how a circular rail carriage could be powered.

Here is what i am looking at 
http://www.ghbinroth.com/nadella/nadella-multimotion-line-fsr-system.pdf
https://www.alibaba.com/product-detail/High-Quality-And-Precision-Circular-Guide_1974565028.html

On a linear rail its common to use 8mm Acme Lead Screw to translate the nema rotation movement..how is this done on circular carriage like the links above.  thanks

5 Replies

user
rickharris (author)2017-12-16

The technical term your looking for is Rack and Pinion railway. See image.

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user
iceng (author)2017-12-13

If simple transport accuracy a linear stepper motor should do.. A gear race and a worm gear under the carriage..

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user
steveastrouk (author)2017-12-13
user

+1
Or by driving them with a motor mounted in the centre.
Basically like a bike wheel only with he bearings on the outside in your case.

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