by Cre8ivdsgn » Mon Aug 15, 2011 1:06 am
I have a copy of the handbook over my head, and so of course I looked, but my edition (#23) doesn't seem to have anything on timing belts or pulleys (flat belts, V belts, and everything else). But it occurs to me that the pulses per inch is figured out based on pulses per revolution divided by pitch circumference. For example, 200 steps x 10 microsteps per step equals 2000 microsteps per revolution. Divide this by pitch diameter times pi and you get ppi - in this case an 18 tooth pulley has a diameter of 0.458 and so I get 1389.9995 pulses per inch. But the calculator throws back 1388.889. The difference isn't much, but I'd be curious as to what the MH formula was, if you could list it.