Siemens SINUMERIK 880 GA2

8 Contour Definition 05.91
8.2 Contour definition programming
N.. G02 (or G03) A... B... X
3
... Z
3
...
L
F
The circular arc must not exceed 180°. The
sequence A (angle) followed by B (radius) must be
used.
1
, Y
1
X
2
, Z
2
X
3
, Z
3
Z
X
B -
(4)
Chamfer
N... X
2
... Z
2
... B-...
L
F
N... X
3
... Z
3
...
L
F
1)
B- ...means insert a chamfer
B ...means insert a radius
(The “minus” character is not a sign here; instead it
is a special identifier for B = chamfer)
Function Programming Example
A
B
X
3
, Z
3
X
2
, Z
2
X
3
, Z
3
B
Z
X
Z
X
(5)
Radius
N... X
2
... Z
2
... B...
N... X
3
... Z
3
...
L
F
1)
The inserted radius must not be larger than the
smaller of the two paths.
(7)
Circular arc -
straight line
(tangent)
N.. G02 (or G03) B... A... X
3
... Z
3
...
L
F
The circular arc must not exceed 180°. The sequence
B, A must be used. A radius must not be inserted in
X
3
, Z
3
.
A,
X
3
, Z
3
B
Z
X
(6)
Straight line -
circular arc
(tangent)
K
1
J
1
J
2
K
2
X
3
, Z
3
Z
X
(8)
Circular arc -
circular arc
(tangent)
N.. G02 (or G03) I
1
... K
1
... I
2
... K
2
... X
3
... Z
3...
L
F
Circle 1
The preparatory function is programmed for the first
circular arc. The second preparatory function is
always the opposite of the first one and is not
programmed. The interpolation parameters of the
second circle are referred to the end position of this
circle. Both interpolation parameters must be
programmed, even if one of the values is zero.
_______
1) Second block can also be a contour definition
8–4 © Siemens AG 1991 All Rights Reserved 6ZB5 410-0HD02
SINUMERIK 880, (PG)