1 1 pr ogr amming examples, Example: convex sphere machined with end mill – HEIDENHAIN iTNC 530 (340 49x-03) ISO programming User Manual

Page 546

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546

11 Programming: Q Parameters

1

1

.1

1 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 *

Radius of the sphere

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 *

Define the workpiece blank

N140 G31 G90 X+100 Y+100 Z+0 *

N150 G99 T1 L+0 R+7.5 *

Define the tool

N160 T1 G17 S4000 *

Tool call

N170 G00 G40 G90 Z+250 *

Retract the tool

N180 L10.0 *

Call machining operation

N190 D00 Q10 P01 +0 *

Reset allowance

N200 D00 Q18 P01 +5 *

Angle increment in the X/Y plane for finishing

X

Y

50

100

100

Z

Y

-50

R45

50

R45

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