Calibration issues, advice needed

[Kernow Jim]

Hi Jazz and Neale,

Thank you both for your explanations, I am understanding things a lot better now. You Guys are legends to spend all this time typing all that info for a greenhorn like me. Lets hope it helps others as well.

I managed to sneak off to the workshop/mancave this afternoon.
I am working in mm's in Mach, the MS drivers now set to 1600, the ballscrews are 5mm pitch. After calibrating, 'steps per' worked out to 637.8 on x, 631.1 on y and 642.6 on z.

After another test cut all axes were faster, I then had a light bulb moment and checked the velocity and acceleration settings they were set to 600 and 200, the settings recommended in the instruction mini disk, which I haven't altered since initial set up. I changed them to 2000 and 1000 respectively, now I have much better speed.

After coming back and seeing Neale's in depth explanation, everything seems much more clearer now.

Thanks again guys, you are awesome.

The trouble with us Cornish boys, we are strong in arm and weak in head.

Jim

[JAZZCNC]

I managed to sneak off to the workshop/mancave this afternoon.
I am working in mm's in Mach, the MS drivers now set to 1600, the ballscrews are 5mm pitch. After calibrating, 'steps per' worked out to 637.8 on x, 631.1 on y and 642.6 on z.

Something is wrong here if your direct driving the ballscrews so this makes me think you have a 2:1 ratio so your affective pitch is 2.5mm.

If your direct driving the ballscrews then the steps per should be 320 exactly.

How are you coming up with the 637.8 figure .? Are you using the Axis calibration in Mach.?