Author Topic: Rack and Pinion.  (Read 530 times)

Offline NeoTech

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Rack and Pinion.
« on: October 08, 2016, 11:07:31 AM »
So at least its made on CNC.. I modeled this up in Fusion 360 using Excel and some quite annoying math.

<a href="http://www.youtube.com/watch?v=ysMKXS5mY6U" target="_blank">http://www.youtube.com/watch?v=ysMKXS5mY6U</a>

And today i put to use making a section of 250mm, and a small 40mm 8 pin wheel .. Better way for this would be to make the pins pressed in.

<a href="http://www.youtube.com/watch?v=Obs-gwR9BXg" target="_blank">http://www.youtube.com/watch?v=Obs-gwR9BXg</a>

But at least it works and have what i can feel no looseness or play in it. The benefits of this type of rack is that there is always 2 points of opposite contact. The bad thing is that you can't move very fast with them without putting each pin in the wheel on a needle bearing first.
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/