
32
88
A-78710E
Edit
Apprv. Desig.
Sheet
Title
Draw
No.
Date
Design
Descri
tion
Date
FANUC Series 16i –MB, 18i –MB5
Tool Radius Compensation For 5-Axis
machining Specifications
Dec.01.2001
02 Mar.22.2002
T.Mochia All revision
H.Kouzai
Sheet
T.Mochida H.Kouzai
03 Mar.28.2003
MTanaka All revision H.kouzai
04 Aug.05.2003
T.Horie Intersection offset, G-code unification add. H.kouzai
05 Jun.02.2004 Intersection offset(tool rotation type, Mixed type)
Up to two sets of such parameter settings can be specified. Thus, it is possible to
compensate a slant rotary head controlled with two rotary axes. For the calculation
of the compensation amount, calculation is performed on the first rotary axis, and
then calculation is performed on the second rotary axis. For two rotary axes, if the
rotary plane varies due to the rotation of another rotary axis, set the rotary plane
assumed when the position of the rotary axis is 0°. For a single rotary axis, set 0 for
the second rotary axis.
・Reference angles of rotary axes and directions of compensation vectors [19620 to 19623]
These parameters set the reference angles of rotary axes and the directions of
compensation vectors.
(1) Reference angles (θ0, φ0) of rotary axes [19620 and 19621]
Set the position of a rotary axis when setting a compensation vector as described
in (2). Usually, set 0.
(2) Directions of compensation vectors [19622 and 19623]
As the direction of a compensation vector, set the rotary angle (RA, RB) in
relation to the direction of linear axis 3 (usually, Z direction).
RA: The rotation from the forward direction of linear axis 2 to the forward
direction of linear axis 3 in the plane formed by linear axes 2 and 3 is
assumed to be forward rotation.
RB: The rotation from the forward direction of linear axis 3 to the forward
direction of linear axis 1 in the plane formed by linear axes 3 and 1 is
assumed to be forward rotation.
Linear axes 1, 2, and 3 are those specified for the parameters described in the
previous section.
If linear axis 3 is not set (type 1), linear axis 3 is assumed to be the Z-axis.
(Example1) In case of -Z direction
R
A
=0
R
B
=0
Line axis 1
(X)
Line axis 3 (Z)
Line axis 2
(Y)
(Example2) In case of -X direction
R
A
=0
R
B
=90.0
Line axis 3 (Z)
Line axis 1
(X)
Line axis 2
(Y)