352 Programming: Q Parameters
9.12 Programming Examples
Example: Convex sphere machined with end mill
Program sequence
îš„ This program requires an end mill.
îš„ 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.
îš„ You can determine the number of contour cuts
through the angle increment in the plane
(defined in Q18).
îš„ The tool moves upward in three-dimensional
cuts.
îš„ The tool radius is compensated automatically.
0 BEGIN PGM SPHERE MM
1 Q1 = +50
Center in X axis
2 Q2 = +50
Center in the 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
Stepping angle 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 tool 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
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