HEIDENHAIN PT 880 - Manual (Page 107)

POSITIP 880 107
I – 9 POSITIP 880 T
u
rn
ing F
unctions
Multipass
The multipass cycle enables you to turn a shoulder in any number of
passes. See Fig. I.83.
Three blocks are needed to enter into a program:
„ Cycle block
„ X coordinate
„ Z coordinate
The multipass cycle contains all information required for the operation.
Do not delete any blocks from the cycle.
When the program is operating, POSITIP 880 will display the distance-
to-go to the two nominal positions immediately following the cycle
block. See Fig. I.84.
Example: Turning a shoulder in any number of passes
Workpiece diameter after machining: X = 10 mm
End of shoulder: Z = –30 mm
LINE soft key opens the program form for
machining a line.
ARC soft key opens the program form for
machining an arc.
BLEND soft key opens the program form and
NORMAL ARC, INVERTED ARC and CLOSED
CONTOUR soft keys for performing a blend.
CHAMFER soft key opens the program form
and the CLOSED CONTOUR soft key to create
a chamfer.
MORE soft key allows the operator to toggle
through the different soft keys rows.
Function Soft key
Fig. I.83 Example of MULTIPASS