HEIDENHAIN TNC 426 (280 476) - Manual (Page 422)

HEIDENHAIN TNC 426, TNC 430 395
1
0
.1
1 Pr
ogr
amming Examples
Example: Convex sphere machined with end mill
Program sequence
n This program requires an end mill.
n 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.
n You can determine the number of contour cuts
through the angle increment in the plane
(defined in Q18).
n The tool moves upward in three-dimensional
cuts.
n The tool radius is compensated automatically.
0 BEGIN PGM BALL MM
1 FN 0: Q1 = +50 Center in X axis
2 FN 0: Q2 = +50 Center in Y axis
3 FN 0: Q4 = +90 Starting angle in space (Z/X plane)
4 FN 0: Q5 = +0 End angle in space (Z/X plane)
5 FN 0: Q14 = +5 Angle increment in space
6 FN 0: Q6 = +45 Radius of the sphere
7 FN 0: Q8 = +0 Starting angle of rotational position in the X/Y plane
8 FN 0: Q9 = +360 End angle of rotational position in the X/Y plane
9 FN 0: Q18 = +10 Angle increment in the X/Y plane for roughing
10 FN 0: Q10 = +5 Allowance in sphere radius for roughing
11 FN 0: Q11 = +2 Setup clearance for pre-positioning in the tool axis
12 FN 0: Q12 = +350 Feed rate for milling
13 BLK FORM 0.1 Z X+0 Y+0 Z-50 Define the workpiece blank
14 BLK FORM 0.2 X+100 Y+100 Z+0
15 TOOL DEF 1 L+0 R+7.5 Define the tool
16 TOOL CALL 1 Z S4000 Tool call
17 L Z+250 R0 F MAX Retract the tool
X
Y
50 100
100
Z
Y
-50
R45
50
R45