Re: Retrofit options for hurco Hawk 5
Servo motors, both AC and DC are rated by torque and rated RPM. Unlike a stepper motor torque curve which drops off very fast as the RPM increases, servo motors have a much flatter torque curve from 0 to the rated RPM, almost flat through the operating range.
I am not aware of any new machines using DC servos, AC servos are the norm today.
Yes, AC servos need to be tuned, but many have auto tuning software. Even with the autotuning function, they still normally require a bit of manual tweaking.
Tuning by ear and feel is the way I do it also. I need to adjust mine one of these days.
Jim Dawson
Sandy, Oregon, USA