Siemens SINUMERIK 880 Programming Manual page 52

3 Directions of Movement, Dimensioning
3.10 Coordinate rotation
3.10 Coordinate rotation
By coordinate rotation the coordinate system of the workpiece can be defined independently of
the coordinate system of the machine. Thus, a workpiece does not have to be oriented along
the machine axes. The settable coordinate rotation is intended for this purpose.
If several identical contours pointing in different directions have to be machined on one
workpiece, you can use the programmable coordinate rotation.
Example: The workpiece W with coordinate system X
coordinate system X and Y
M
which are identical but have different positions and orientations.
Y
machine
Y
workpiece
Y
Y
Y
Y
E
Settable and programmable coordinate rotation
% 10
N005 G55
N010 G00 F500 X.. Y..
N015 G01 ...
N020 ...
N025 G58 X 1 Y 1 A 1
N030 L10
N035 G58 X 2 Y 2 A 2
N040 L10
N045 G58 X 3 Y 3 A 3
N050 L10
N055 M02
3–22
at the angle A . Three geometrical shapes are to be cut out
M E
3
A
2
2
A
1
1
X X
2 1
X
E
( X , Y , A , settable coordinate rotation )
E E E
( Machining the outside edge of the workpiece )
Z..
( Programmable coordinate rotation )
( Subroutine e.g. for elongated hole machining )
© Siemens AG 1991 All Rights Reserved
and Y is clamped to machine
W W
A
3
X
A
workpiece
E
X
3
X
SINUMERIK 880, (PG)
01.93
machine
6ZB5 410-0HD02