Hello, This is my first CNC machine and I ran into a problem with the motors or drive system, They seem to be running too slow, I mean about 5 min just to move 3 cm with no load !
I bought this kit http://www.download.sstecnica.com.ar..._MAXI_2311.pdf, consisting of a parallel port interface, 3 10A microcontrolled driver boards, 3 motion king 23HS6602 hybrid stepper motors and a standard 500 Watt pc power supply.
I built a basic frame about 50cm wide by 60cm long, using and unsupported course thread screw and a 2.12mm pitch.
I talked with the supplier of the kit and he helped me step by step to configure TurboCNC and MAch3 with same results, we played around with varios settings trying to increase pulses but motor will stall.
Now I read a little and decided to test motors with a bench top, regulated supply at 12V 1.5A and motors seem to run a little faster but I lost torque, I can stop the gantry with one finger.
I have some questions which I haven´t been able to answer, for example..
1. what are these motors working frequency or RPM?
2. what voltage should I feed the motors (5V,12V,24V etc)
3. supplier of kit says if I install larger motors I will only gain torque not speed. Is this true?
Also looking at the driver boards I do not see any sense resistors, normaly 1 ohm 2 - 5 watts, nor do I see a similar sense scheme as the linistepper yet it is advertise as soo..
So if you can shine some light as to why this happens or how to solve it I would greatly apreciated..
Motor Specs (23HS6602):
23HS Stepper Motor 57mm 1.8degree, MotionKing Stepper Motor
Step Angle (deg): 1.8
Motor Length (mm): 55
Rated Current (A): 1.5
Phase Resistance (ohm): 3.2
Phase Inductance (mH) : 5.5
Holding Torque (N.cm Min): 80
Detent Torque (N.cm Max): 3.5
Rotor Inertia (g.cm²): 280
Lead Wire (No.): 6
Motor Weight(g): 680