I wanted to ask a relatively simple question:
Currently I am using a 3 phase AC motor that has a Gearbox torque of 5.1 Nm. A 16 teeth gear is attached to the shaft and this is connected to a 72 teeth gear using a gear belt.
So straightforward calculation would be:
Gear Ratio = 4.5 : 1
Output torque = 5.1 x 4.5 = 22.95 Nm ~ 23Nm
I need to replace this motor with a stepper motor with a holding torque of 2.7Nm.
Am I right in thinking that when the stepper motor is unloaded, each step (1.8deg) gives a torque of 2.7 Nm?
If that's the case, using the current gear ratio, would the output torque be 2.7 Nm x 4.5 = 12.15 Nm?
Secondly, if I was to use microstepping (32), does this calculation make sense?
1.8 step angle/ 32 microsteps = 0.05625 deg
Does each microstep angle output 2.7 Nm of torque or 2.7Nm / 32 = 0.084 Nm of torque?