FANUC Series 16/18/160/180-Model C Machining Center Operators Manual

OPERATION
B–62764EN/01
3. MANUAL OPERATION
569
Assume that the rotary axes for basic axes X, Y, and Z are A, B, and C,
respectively. Assume also that the Z–axis represents the tool axis.
Depending on the axis configuration of the machine, four types of tool
axis directions are available. Specify the direction with parameter No.
7120.
XX
XY
Y
Y
Y
C
A
C
B
B
B
A
A
(1) A–C axis type
(2) B–C axis type
Z (tool axis)
Z (tool axis)
(3) A–B axis (A–axis master) type (4) A–B axis (B–axis master) type
Z (tool axis)
Z (tool axis)
The figure below shows handle pulse (Hp) distribution to the X–axis,
Y–axis, and Z–axis for each of the four directions.
(1) A–C axis type
Xp = Hp sin (a) sin (c)
Yp = –Hp sin (a) cos (c)
Zp = Hp cos (a)
Z
a
X
Zp
Hp
Xp
Hpxy
Yp
Y
a
c
Explanations
D Axis configuration
D Pulse distribution to
basic axes

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