
B–63523EN–1/03
10. TOOL FUNCTIONS
1285
Set offsets relative to the rotation angles of the rotation axes in parameter
No. 19659. The compensation vector calculation formula is the same as
that used for rotation axis origin compensation, except that Bp and Cp are
changed to rotation axis offsets.
When rotation axis origin compensation and rotation offsetting are set at
the same time, both compensations are performed.
When the tool axis is on the Z–axis, and the rotation axes are the B–axis
and C–axis, compensation vector calculation is performed as follows :
Xp = Lc * sin(B–(Bz+Bo)) * cos(C–(Cz+Co))
Yp = Lc * sin(B–(Bz+Bo)) * sin(C–(Cz+Co))
Zp = Lc * cos(B–(Bz+Bo))
Bz,Cz : B–axis and C–axis origin compensation values
Bo,Co : B–axis and C–axis rotation axis offset values
Normally, the control point of tool length compensation along the tool
axis is the point of intersection of the centers of two rotation axes. The
machine coordinates also indicate this control point.
This section explains the compensation that is performed when the
centers of the two rotation axes do not intersect and also explains how to
place the control point at a convenient position on the machine.
D Rotation axis offset
10.4.3.2
Control point
compensation of tool
length compensation
along tool axis
General