Need Help!- Stepper Motor

[rene0051]

Hello to everybody

I have builted my first cnc and I need help for my stepper motor calibration with Mach3
2 NEMA34 Stepper Motors 4.2 AMP 637 oz/in, 1.8 degree, 8 Wires
1 NEMA23 Stepper Motors 2.8 AMP 254 oz/in, 1.8 degree, 8 Wires

My ball screw have 16 MM - 5 MM pitch

I have tried different value in motor tuning window but with the Z axis I have only nose and vibration if I turn my ball screw by hand everything is running free

Thanks

[wildwestpat]

The set up procedure for Mach3 is set out in both the manual and the settup instructions available for down load on the Artsoft website.

You need to start with low values of speed and acceleration. If you demand too much torque from the motors they stall and you get a nasty buzz. It is also necessary to have some load on the motor as they don't necessarily like running unloaded at certain speeds.

You also need to take into account that the use of micro-stepping drastically reduces the available torque so try and use full step if possible with gearing if you are looking for high accelerations and traverse speeds.

Try the set up procedures in the manual as this may sort out your problem if not then post the results of following the set up .

Hope this is enough to get you going - Regards - Pat

[rene0051]

Thank you for your comments