First steel diy CNC router build

[ivars211]

OK, on the positive note - all steppers and drivers/ PSU works!
Am I calculating steps per mm right?
I have 1605 ballscrew, so 5mm pitch
So if I want my cnc to move 1mm, it's 0.2revolutions (1/5).
I have set my driver to 200pulse/rev (http://www.longs-motor.com/productin...12_80_131.aspx) by putting SW5-SW8 ON
so thats 0.2*200 = 40 steps per mm, right?
I think I have calculated something wrong as my velocity is set to 31 000 but it moves quite slow compared to CNC's on youtube.
Btw, is there any point having microstepping turned ON on the driver?

[JAZZCNC]

First check in Native units that your running with Metric units not imperial.

Don't set drive to 200 micro steps as that will make the motors run rough. Set the micro stepping to at least 800 for smooth running. Higher MS will give smoother motors but don't go above 2000MS. The down side is that the higher the MS the lower the velocity you will be able to tune the motors for with a Given Kernal setting. Higher Kernal speed will allow higher motor tuning but will need a fast PC with a very good parallel port. Don't set it above 45,000Khz as it will make the system unstable.

Your Steps Per calculations are correct so just do the same for higher MS settings. With a 5mm pitch ballscrew and if running decent amount of volts then you'll top out around 5000-6000mm/min before steppers start losing torque and stall. Obviously this depends on many other factors but 5000 should be achievable.

If running 800MS Start motor tuning with 3000mm/min and 500s/s accel then tweak from there.! Golden rule is you can't have high Velocity and High acceleration. Adjust one then test then do other don't do both at same time. Don't go too high on acceleration otherwise you run the risk of missed steps. when you get above 1500 your in missed step territory.!