
- Notes on circular interpolation and helical interpolation, when the workpiece coordinate system
is used as the programming coordinate system
• The start point, end point, and center of an arc change as the rotation axis
rotates.
• In case of Type 1 , I, J, K commands the vector from the start point to the center
of the arc.
• With the mixed type and table rotation type machines, circular or helical
interpolation is possible with the following conditions.
<1> The rotation axis for table whose center is perpendicular to the plane
selected for the circular or the helical interpolation can be commanded in
those interpolation.
<2> Other rotation axes for table whose center are not perpendicular to the
plane must be at the positions which are the same as those at G43.4(or
G43.5) block.
If these conditions are violated, the alarm (No.5421) occurs.
And, as to the rotation axes for tool, they can be commanded in any case.
<Program examples>
• In the case of a mixed type machine
Descriptions are based on the following machine configuration.
C-axis
Center of C-axis rotation
Z-axis
Y-a xis
X-axis
B-axis
Center of B-axis rotation
Tool center point
Workpiece
coordinate system
B-63534EN/02-05
Edit
Apprv. Desig.
Sheet
Title
Draw
No.
Date
Design
Description
Date
FANUC Series 16i/160i/160is-MB,18i/180i/180is-MB5,
18i/180i/180is-MB OPERATOR’S MANUAL
Concerning the addition of TOOL CENTER POINT
CONTROL FOR 5-AXIS MACHINING
Oct.27.2003
T. Horie
22/22