Re: [CAD_CAM_EDM_DRO] Re: EMC and lead screw compensation

Maybe we should be installing laser positioning devices on the machines now
to indicate actual backlash "on the fly"? Would that work well with ACME
screws? That way we could eliminate the use of ball screws altogether.
This would be ideal for designing new machines....especially lathes...where
some people want both CNC and Manual capabilities..

Smoke

>-----release notes-----
>7. Added bidirectional lead screw compensation. Files of compensation
>points look like this (these sample comp values are exaggerated):
>
>0.000000 0.000000 -0.001279
>0.100000 0.098742 0.051632
>0.200000 0.171529 0.194216
>0.300000 0.292485 0.291030
>0.400000 0.439511 0.367981
>0.500000 0.451323 0.493962
>0.600000 0.618011 0.618044
>0.700000 0.669925 0.735979
>0.800000 0.798637 0.787879
>0.900000 0.889286 0.927685
>1.000000 1.007024 0.959853
>...
>
>where the first column is the commanded axis position, the second
>column is the measured position (like with a laser) in the forward
>direction, and the last column is the measured position in the reverse
>direction.
>