CBlair
Diamond
- Joined
- Sep 23, 2002
- Location
- Lawrenceville GA USA
I have a TL-1 and although I am generally pleased with the machine I have been chasing a accuracy problem all day. Most of the time I only run parts in lots of 4-6 ea. Today I am trying to cut 40 small shafts. 1" CRS with a 20mm bearing journal, .0004 total tolerance on diameter. I have programed for the middle of the tolerance band and I am roughing with one tool and using another to cut one finish pass to size. However I keep chasing my dimention all over the place from part to part.
This is a very simple part, held tight to the chuck, consistant tool pressure and yet my parts are comeing out with +/- .0006 from nominal. I try and adjust the tool .0001 to get back to the middle and then it will be .0004 in the opposite direction on then next part and then without making any changes back to the other side of the tolerance band.
Does anyone know what the actuall tolerance capability of this machine is supposed to be? I would have to believe that it should be expected to run within +/- .0004 at least.
Charles
This is a very simple part, held tight to the chuck, consistant tool pressure and yet my parts are comeing out with +/- .0006 from nominal. I try and adjust the tool .0001 to get back to the middle and then it will be .0004 in the opposite direction on then next part and then without making any changes back to the other side of the tolerance band.
Does anyone know what the actuall tolerance capability of this machine is supposed to be? I would have to believe that it should be expected to run within +/- .0004 at least.
Charles