Here's a way to drive the gantry with roller chains. Using fewer changes of
drive is always better since going from a shaft, to worm gear, to rack and
pinion has more places for backlash. The same mechanism as in this video can be
used with lengths of toothed belt.
Roller chain drive Plasma table - YouTube
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Roller chain drive Plasma table - YouTube
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On Thursday, October 4, 2018, 6:50:45 AM MDT, Leonardo Marsaglia
<ldmarsag...@gmail.com> wrote:
About how to drive and home the gantry. From what we've been talking and
thinking it through a little more, I'm thinking that the best solution is
the one Gregg suggested. To have a transversal shaft on the gantry driven
by the servo motor by a worm and gear reduction with the timing pulleys on
each end of the shaft driving the pinions. This way I can adjust and square
the two columns and it should stay squared at any time. This is really
important because this is going to be used by a regular operator, so this
has to be as reliable and fail proof as possible.
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