HEIDENHAIN PT 855 for Turning - Manual (Page 35)

I - 3 Programming POSITIP
36 Operating Instructions POSITIP 855
Multipass cycle
The multipass cycle enables you to turn a shoulder in any number
of infeeds.
You only need to enter three blocks into a program:
• CYCL block
• X coordinate
• Z coordinate
The multipass cycle contains all information required for the opera-
tion.
Do not delete any blocks from the cycle.
When the program is run, POSITIP always displays the distance-
to-go to the two nominal positions immediately following the
CYCL
block.
Example: Entering the Multipass cycle into a program
Operating mode: PROGRAMMING AND EDITING
Example: Turning a shoulder in any number of infeeds
Workpiece diameter
before machining:
X = 50 mm
Shoulder diameter: X = 10 mm
Start of shoulder: Z = 0 mm
End of shoulder: Z = –30 mm
Go to the third soft key row.
Select Edit .
/
Select the Multipass cycle.
The program block
CYCL 3.0 MULTIPASS appears on the screen.
Z
30
X
10 50
0