HEIDENHAIN PT 855 for Milling - Manual (Page 40)

I - 3 Hole Patterns and Rectangular Pocket
38 Operating Instructions POSITIP 855
Bolt hole circle patterns
2nd step: Display graphic
The graphic makes it easy to verify the entered data.
The solid circle represents the currently selected hole.
POSITIP displays the bolt hole
circle graphically on the screen.
Here, a full circle with 8 holes is
shown. The first hole is at 30°.
The coordinates of the hole are
given at the bottom of the screen.
3rd step: Drill
The bolt hole circle graphic can be influenced with oper-
ating parameters P 88 and P 89 (see chapter II - 2).
Parameter P 88 (direction of rotation) also influences
working on the bolt hole circle.
Start the bolt hole circle function.
Move to hole:
Traverse each coordinate of the working plane to display value zero.
The frame of the positioning aid is a solid line for these axes.
After drilling, retract in the tool axis.
Drill the remaining holes in the same manner.
Drill:
Traverse to display value zero in the tool axis.
The frame of the positioning aid is a dashed line for this axis.
Functions for drilling and graphic
Function Soft Key
Go to next hole
Return to last hole
End drilling
Drill the remaining holes in the same manner.