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General Mach Discussion / Re: Lost Steps
« on: July 04, 2011, 04:48:51 AM »
Thanks. I just hate having to ask tons of questions without offering some form of suggestion.
So, Your Z is physically short on dimension when coming back to zero and Mach is OK. I would guess at two possibilities;
1) Missed steps and the cause being that the motor does not have enough torque to raise the axis under all conditions. This could be stiffness in the axis (which you have already eliminated) or the motor drive electronics (drop in voltage from the PSU, insufficient current setting, etc).
2) Something physically loose (motor coupling, leadscrew nut, etc.)
Don't know if this helps.
Tweakie.
So, Your Z is physically short on dimension when coming back to zero and Mach is OK. I would guess at two possibilities;
1) Missed steps and the cause being that the motor does not have enough torque to raise the axis under all conditions. This could be stiffness in the axis (which you have already eliminated) or the motor drive electronics (drop in voltage from the PSU, insufficient current setting, etc).
2) Something physically loose (motor coupling, leadscrew nut, etc.)
Don't know if this helps.
Tweakie.