Im doing project like this Image .
My rotating table is bigger radius od 0.7M ( thats an outer gear radius) and i need to pick up right motor to do it. Precision is very important, thats why i want to use stepper.
Weight on table could be aroung 100kg ( human).
Ofc, motor is not handling all that mass, he is handling fricition and momentum for rotation.
Do you have some advice, or hunch what king of motor would do this job ( power, amps etc...)
Im thinking about taking this motor Link to motor site
Maybe it would be overkill for this task, but better more power than less
What kind of driver should i use for this motor?
If you have a human on the table you'll have to handle the torque generated by
the subject, which can be suprisingly large (the first thing people tend to do on a turntable is try to
turn it, people are like that).
Anyway you need further reduction gearing of about 10:1 based just on the size of your existing gears
and my guess that 30rpm is a suitable top speed. Most motors are around 4000rpm, so about 100:1
total reduction is about it, split into 10:1 gearmotor and 10:1 for the drive gear (estimated from
the example image). I'm assuming a standard DC motor here. A stepper might be more like 1000rpm
top speed, note.
Once you have 100:1 reduction, that changes your desired torque in proportion. Then pick a motor,
then pick a driver than can drive the motor chosen.