HEIDENHAIN iTNC 530 (60642x-03) - Manual (Page 368)

368 Programming: Q parameters
9.12 Pr
ogr
amming examples
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 Q1 = +50 Center in X axis
2 Q2 = +50 Center in Y axis
3 Q4 = +90 Starting angle in space (Z/X plane)
4 Q5 = +0 End angle in space (Z/X plane)
5 Q14 = +5 Angle increment in space
6 Q6 = +45 Sphere radius
7 Q8 = +0 Starting angle of rotational position in the X/Y plane
8 Q9 = +360 End angle of rotational position in the X/Y plane
9 Q18 = +10 Angle increment in the X/Y plane for roughing
10 Q10 = +5 Allowance in sphere radius for roughing
11 Q11 = +2 Set-up clearance for pre-positioning in the spindle axis
12 Q12 = +350 Feed rate for milling
13 BLK FORM 0.1 Z X+0 Y+0 Z-50 Definition of workpiece blank
14 BLK FORM 0.2 X+100 Y+100 Z+0
15 TOOL CALL 1 Z S4000 Tool call
16 L Z+250 R0 FMAX Retract the tool
X
Y
50 100
100
Z
Y
-50
R45
50
R45