I've started looking into suitable racks + pinions for the plasma cutter i've designed, and was wondering if anyone has any recommendations. I was thinking about 2MOD or 12DP, as the design involves the gantry running on the racks, with no other support.
My main reason for asking is that leadscrew come in suitable pitch (ie. 10tpi), which make working out the distance moved fairly easy given you know the number of turns. Whereas with gear racks, the figures aren't as easy to work with.
Is it a case of pick whatever gear pitch you think suitable, and then work everything out from there?
Or is there commonly used pitches, to make calculations easier? |