lathe tool and work offsets
I have been running my converted lathe for a while now. but a problem keeps bugging me, I have a workaround but I would like to solve the problem the correct way.
G54 (Sets work space)
T0 M6 G43 (makes sure no tool is loaded)
I use T1, which has the x and z offset at 0.00 and is a CCMT insert, to set the machine offsets
I put the part in and set the Z offset using the "touch off" button
I take a cut on the diameter, measure the diameter and set that as the X using the "touch off" button.
I load T2, T3, T4 etc using for example T2 M6 G43, then I touch it off using a piece of thin paper (.001" thick) to the work piece and set the Z and X offset using the "tool touch off" button.
after all the tools are setup I can load work pieces touch off with T0 using the "touch off" button and run the program, everything works fine.
the problem:
if I am running the program and I am in a finish cut with T1 (which has no offset from T0) and say that I am measuring .001 oversized to my way of thinking I should be able to stop the program, with T1 loaded press the "touch off" button and correct the diameter. then start that line of the program again.
what actually happens is that the tool offsets to a strange measurement that doesn't correspond to the new part diameter.
my workaround is I use the MDI interface and set the tool back to T0 and set the diameter.
should it be that if I press the "touch off" that it should set the offset including the loaded tool offset?
Ray,
Life is a choice, death is choice poorly made.