HEIDENHAIN NC 124 - Manual (Page 50)

4 Positioning with MDI
50 TNC 124
Example: Entering data and executing bolt hole circles
The work steps “Enter circle pattern data,” “Display graphic” and
“Drill” are described separately in this example.
Hole data
Enter the hole data separately (see pages 43 and 44) before enter-
ing the circle pattern data.
Clearance height:
+50 mm
Setup clearance A : 3 mm
Workpiece surface: 0 mm
Hole depth B : – 20 mm
Pecking depth C : 5 mm
Dwell time: 0.4 s
Feed rate: 80 mm/min
Circle pattern data
Number of holes: 8
Center point coordinates: X = 50 mm
Y = 50 mm
Bolt hole circle radius: 20 mm
Starting angle: angle between
X axis and first hole 30°
Bolt Hole Circle Patterns
Y
X
30°
R20
50
50
0
0
A
B
C
Z
1st step: Enter circle pattern data
Operating mode: POSITIONING WITH MDI
/
Select Circle Pattern.
Go to the second soft-key row in the operating mode
POSITIONING WITH MDI
.
Select Full Circle.