
B–63523EN–1/03
1. AXIS CONTROL
135
1) Relationships between rotation and linear axes
(when A = 0 and B = 0)
First set: 5 (B–axis), 1 (X–axis), 3 (Z–axis)
First set: 4 (A–axis), 3 (Z–axis), 2 (Y–axis)
First set: 0, 0, 0 (Z–axis)
2) Reference angle and reference fixture offset value
X: F
0X
Y: F0Y
Z: F0Z
A: f0
B: q0 If the above data is set up, the method of calculating fixture
offset values is as follows:
O: Rotary table center
W: Workpiece zero point offset value
F
0: Fixture offset value for A = f0 and B = q0
FA: Fixture offset value for A = 0 and B = 0
F
1: Fixture offset value for A = 0 and B = q
F: Fixture offset value for A = f and B = q
X
A
FA
O
F
F1
F0
B
Y
Z
FA = (FAX, FAY, FAY)
F
1 = (F1X, F1Y, F1Z)
F = (F
X, FY, FZ) Assuming the above, the following are obtained:
FAX= cos(–q0) cos(–q0) –sin(–q0)10 0 F0X
FAY = 0 1 0 0 cos(f0) –sin(f0)F0Y
FAX= sin(–q0) 0 cos(–q0) 0 sin(f0) cos(f0)F0Z
F1X= cos(q) 0 –sin(q)F0X
F1Y=0 1 0 F0Y
F1Z= sin(q) 0 cos(q)F0Z
FX=1 0 0 F1X
FY= 0 cos(–f) –sin(–f)F1Y
FZ= 0 sin(–f) cos(–f)F1Z
Method of calculating
fixture offset values