gangtool setup / backtools
Yes John, I read further on g10 coordinate system rotation and it does sound like that would work nicely for lathes with front/rear tooling.
I would be interested to see how it goes. if it works then it is a simple G-code remap (as described in that link I posted earlier).
One good thing about G68/69 is that if you prefer not to use it, then you can use negative X diameters still.
I believe that the commercial controllers for front/rear turrets have the 180 degree rotation done in a init string or similar considering the value would always be 180 degrees. No need for a operator to set this every time, he just selects front or rear tooling by putting a G68 or G69 along with his toolchange.
This is looking pretty good. After evaluation, it would be good to document it in the lathe docs.
Why not remap G69 to issue G10 L2 R180 and G68 to issue G10 L2 R0?
I don't think it is a g code remap situation. The G10 would be used to set the rotation (180 deg in this case), the G68/G69 would have to be setup to merely toggle that predefined rotation on and off.
Anyway, I am not at all sure that this is going to work. Someone with a lathe config in front of them needs to experiment before we go too far down this route.
WIsh you had some of those suggestions earlier in this thread. Using axis coordinate system rotation for handling front/rear lathe tools was never suggested. Once known, using remap and the command formats are pretty obvious. I try not to ask things with obvious answers that can be found with a bit of research.
WIsh you had some of those suggestions earlier in this thread
I wish it had occurred to me.
I only ever thought of it as useful for skewed work in a mill.
You have been extremely helpfull Andy. It looks like rotation was implemented mostly with milling in mind. Searching the web is where I found coordinate system rotation referenced to lathe front/rear tools. My friend told me about using G68 and G69 on several lathes he operated.
Its been a valuable learning experience. This question won't stump us next time ! LOL
I will report back later on how it works.