HEIDENHAIN ITNC 530 User Manual page 575

Example: Concave cylinder machined with spherical cutter
Program sequence
Program functions only with a spherical cutter.
The tool length refers to the sphere center.
The contour of the cylinder is approximated by
many short line segments (defined in Q13). The
more line segments you define, the smoother
the curve becomes.
The cylinder is milled in longitudinal cuts (here:
parallel to the Y axis).
The machining direction can be altered by
changing the entries for the starting and end
angles in space:
Clockwise machining direction:
starting angle > end angle
Counterclockwise machining direction:
starting angle < end angle
The tool radius is compensated automatically.
0 BEGIN PGM CYLIN MM
1 FN 0: Q1 = +50
2 FN 0: Q2 =+0
3 FN 0: Q3 = +0
4 FN 0: Q4 = +90
5 FN 0: Q5 = +270
6 FN 0: Q6 = +40
7 FN 0: Q7 = +100
8 FN 0: Q8 = +0
9 FN 0: Q10 = +5
10 FN 0: Q11 = +250
11 FN 0: Q12 = +400
12 FN 0: Q13 = +90
13 BLK FORM 0.1 Z X+0 Y+0 Z-50
15 BLK FORM 0.2 X+100 Y+100 Z+0
15 TOOL DEF 1 L+0 R+3
16 TOOL CALL 1 Z S4000
17 L Z+250 R0 FMAX
18 CALL LBL 10
19 FN 0: Q10 = +0
HEIDENHAIN iTNC 530
Z
-50
Y
100
50
Center in X axis
Center in Y axis
Center in Z axis
Starting angle in space (Z/X plane)
End angle in space (Z/X plane)
Radius of the cylinder
Length of the cylinder
Rotational position in the X/Y plane
Allowance for cylinder radius
Feed rate for plunging
Feed rate for milling
Number of cuts
Define the workpiece blank
Define the tool
Tool call
Retract the tool
Call machining operation
Reset allowance
X
Y
X Z
100
575