HEIDENHAIN ITNC 530 User Manual page 577

Example: Convex sphere machined with end mill
Program sequence
This program requires an end mill.
The contour of the sphere is approximated by
many short lines (in the Z/X plane, defined in
Q14). The smaller you define the angle
increment, the smoother the curve becomes.
You can determine the number of contour cuts
through the angle increment in the plane
(defined in Q18).
The tool moves upward in three-dimensional
cuts.
The tool radius is compensated automatically.
0 BEGIN PGM SPHERE MM
1 FN 0: Q1 = +50
2 FN 0: Q2 =+50
3 FN 0: Q4 = +90
4 FN 0: Q5 = +0
5 FN 0: Q14 = +5
6 FN 0: Q6 = +45
7 FN 0: Q8 = +0
8 FN 0: Q9 = +360
9 FN 0: Q18 = +10
10 FN 0: Q10 = +5
11 FN 0: Q11 = +2
12 FN 0: Q12 = +350
13 BLK FORM 0.1 Z X+0 Y+0 Z-50
14 BLK FORM 0.2 X+100 Y+100 Z+0
15 TOOL DEF 1 L+0 R+7.5
16 TOOL CALL 1 Z S4000
17 L Z+250 R0 FMAX
HEIDENHAIN iTNC 530
Y
100
50
50
Center in X axis
Center in Y axis
Starting angle in space (Z/X plane)
End angle in space (Z/X plane)
Angle increment in space
Radius of the sphere
Starting angle of rotational position in the X/Y plane
End angle of rotational position in the X/Y plane
Angle increment in the X/Y plane for roughing
Allowance in sphere radius for roughing
Set-up clearance for pre-positioning in the tool axis
Feed rate for milling
Define the workpiece blank
Define the tool
Tool call
Retract the tool
Y
X
100 -50
Z
577