From: TADGUNINC@...
OK, at the risk of beating a dead horse, If you have access to .0001" DRO
scales, wouldn't they provide a more accurate method of locating the table,
than indirectly with encoders?
Yes! But, who can afford these? There are a number of innacuracies introduced
by using ballscrews and encoders. but, you should be aware that linear
scales are not a panacea! If the ways are worn such that the axes are not
orthogonal, or that an axis doesn't travel straight, then the linear scales won't
provide accuracy, either.
If not I'll be installing encoders on my mill, if so can the programs you
guys are running be set up to read from scales?
The computer should not be able to tell the difference.
Finally, does anybody have info about how well the BOBCAD program works? And
can it be used with the Linux programs for a source of the G codes?
It does not run on the Linux machine. they do have a DOS emulator, but I hear
news that the Windows emulator may be up and running. But, anyway, I
use Bobcad/CAM Ver 16.1 on a Windows 95 machine, and then send the
files over by network to the Linux CNC machine. I really haven't set Bobcad
up to have all the beginning and end functions I should have there, but it definitely
does work. I have cut several parts using Bobcad designs run through the
G-code generator of the CAM function. I find Bobcad cumbersome, and
the added things I have to do to specify roughing passes and finish offsets
to be pretty difficult. But, if the geometry is complicated, it definitely does
the job!
Jon
