You want to tool length not a z axis offset. If you are using a pivot point then the only important length is the distance from the tool tip to the pivot point. A pivot point length plus a tool length should be the distance from the tool tip to the pivot point.
A G68 could invoke a macro in your kinematics to calculate the xyz points of the circular interpolation. In the fanuc control you use G17/18/19 to circular interpolate when using G68. It cuts 3D circles on the imaginary plane. On Sun, Jun 7, 2020, 1:04 PM andy pugh <bodge...@gmail.com> wrote: > On Sun, 7 Jun 2020 at 18:47, Stuart Stevenson <stus...@gmail.com> wrote: > > Are the tool lengths you use an actual tool length or a distance from > > machine zero. > > > Typically they are the height above the table of a tool upside down in the > presetting fixture on my mill table as measured with my height gauge. > > But I could easily change this, maybe making a presetting block for the > height gauge. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is designed > for the especial use of mechanical geniuses, daredevils and lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1912 > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
