Re: Motor drive ratios and speed
Originally Posted by
kennected
[COLOR=#000000]I
I'm considering ClearPath servos, so the question is which model would be best.
Since we're using step/direction, the SDSK series is probably obvious but which stock number? I see the differences in speed and torque between motors in the nema34 choices and see motor torque goes down when speeds go up,
Am I on the right track? Thanks, Ken
As far as servo's are concerned they have a much better continuous torque curve compared to steppers, Servo's , like steppers. have maximum torque at zero RPM and generally stays fairly flat over the rated rpm range. Steppers on the other hand do not fare well as rpm increases.
The drive usually has to be built to take higher voltage in order to keep the current (torque) constant.
Servo's generally also have a higher rpm working range.
Another thing to keep in mind when using dual motor for one axis is the ability for each to track correctly, sometimes done with electronic gearing when using servo's.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.