HEIDENHAIN TNC 320 (340 55x-05) ISO programming - Manual (Page 267)

HEIDENHAIN TNC 320 267
8.12 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.
%SPHERE G71 *
N10 D00 Q1 P01 +50 * Center in X axis
N20 D00 Q2 P01 +50 * Center in Y axis
N30 D00 Q4 P01 +90 * Starting angle in space (Z/X plane)
N40 D00 Q5 P01 +0 * End angle in space (Z/X plane)
N50 D00 Q14 P01 +5 * Angle increment in space
N60 D00 Q6 P01 +45 * Sphere radius
N70 D00 Q8 P01 +0 * Starting angle of rotational position in the X/Y plane
N80 D00 Q9 P01 +360 * End angle of rotational position in the X/Y plane
N90 D00 Q18 P01 +10 * Angle increment in the X/Y plane for roughing
N100 D00 Q10 P01 +5 * Allowance in sphere radius for roughing
N110 D00 Q11 P01 +2 * Set-up clearance for pre-positioning in the tool axis
N120 D00 Q12 P01 +350 * Feed rate for milling
N130 G30 G17 X+0 Y+0 Z-50 * Definition of workpiece blank
N140 G31 G90 X+100 Y+100 Z+0 *
N150 T1 G17 S4000 * Tool call
N160 G00 G40 G90 Z+250 * Retract the tool
X
Y
50 100
100
Z
Y
-50
R45
50
R45