
B--63003EN--1/02
3. MANUAL OPERATION
320
(1) A--C axis type (2) B --C axis type
(Tool axis )
Z
C
X
A
Y
(Tool axis )
B
C
Z
XY
Output pulse (Hp) distribution by the manual pulse generator to the
X--axis, Y--axis, and Z--axis for the four types is expressed below.
(1)A--C axis type (X axis direction)
Xp = Hp × cos (c)
Yp = −Hp × sin (c)
Zp = ∞
(2)A--C axis type (Y axis direction)
Xp = −Hp × cos (a) × sin (c)
Yp = Hp × cos (a) × cos (c)
Zp = Hp × sin (a)
(3)B--C axis type (X axis direction)
Xp = Hp × cos (b) × cos (c)
Yp = Hp × cos (b) × sin (c)
Zp = −Hp × sin (b)
(4)B--C axis type (Y axis direction)
Xp =− Hp × sin (c)
Yp = Hp × cos (c)
Zp = ∞
In the above expressions, a, b, and c represent the positions (angles) of the
A--axis, B--axis, and C--axis relative to the machine zero point; those
values that are present when tool axis direction handle feed mode is set,
or when a reset occurs, are used. To change the feed direction, reenter tool
axis direction handle feed mode, or press the reset key.
The coordinates (angular displacement) of the rotation axis, required to
determine the direction of the tool axis, can be specified by setting bits
3D1 and 3D2 (bits 3 and 4 of parameter No. 7104) and parameters No.
7144 and 7145.