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General Mach Discussion / Re: Z drive confusion
« on: April 19, 2016, 02:02:16 AM »
Hi Vince,
Welcome to the forum.
The fact that it used to work good but now it doesn’t is a bit suspicious.
From what you say it is my understanding that…
If you zero the Z axis DRO and your dial test indicator then MDI a command Z 0.100 the Z axis moves ~ 0.1125 but the Z axis DRO now shows 0.1000 ?
It is unusual for a Z axis to move further than commanded on the way up (assuming there is not a counter-balance system in use).
Try the same thing on the way down. Zero everything then MDI Z -0.100. Do you still get approx. the same error between the dial test indicator and DRO ?
Tweakie.
Welcome to the forum.
The fact that it used to work good but now it doesn’t is a bit suspicious.
From what you say it is my understanding that…
If you zero the Z axis DRO and your dial test indicator then MDI a command Z 0.100 the Z axis moves ~ 0.1125 but the Z axis DRO now shows 0.1000 ?
It is unusual for a Z axis to move further than commanded on the way up (assuming there is not a counter-balance system in use).
Try the same thing on the way down. Zero everything then MDI Z -0.100. Do you still get approx. the same error between the dial test indicator and DRO ?
Tweakie.