03-20-2014, 10:52 PM
The electronics finally arrived. Spent an entire day trying to figure out the software but got the steppers to step. Have the steppers mounted and the cables fed through the raceways, sure neat to see it move.
They use partial stepping, 2000 pulses per revolution. With the 20 DP rack I cut the tooth spacing is 0.15708 inch per tooth, I made an 18 tooth pinion so 2.827 in per rev of the pinion, with a 3:1 belt reduction its 0.942 in per revolution of the stepper motor or 0.00047 resolution, more than a bit ridiculous for a torch drive. Still have to wire in the limit and homing switches then add a card to the plasma torch to measure the arc voltage and trigger the unit. May be making sparks in a couple of days.
They use partial stepping, 2000 pulses per revolution. With the 20 DP rack I cut the tooth spacing is 0.15708 inch per tooth, I made an 18 tooth pinion so 2.827 in per rev of the pinion, with a 3:1 belt reduction its 0.942 in per revolution of the stepper motor or 0.00047 resolution, more than a bit ridiculous for a torch drive. Still have to wire in the limit and homing switches then add a card to the plasma torch to measure the arc voltage and trigger the unit. May be making sparks in a couple of days.
Free advice is worth exactly what you payed for it.
Greg
Greg