HEIDENHAIN iTNC 530 (340 49x-06) - Manual (Page 231)

HEIDENHAIN iTNC 530 231
6.5 P
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th Cont
ours—P
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lar Coor
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Zero point for polar coordinates: pole CC
You can define the pole CC anywhere in the part program before
blocks containing polar coordinates. Set the pole in the same way as
you would program the circle center.
U Coordinates : Enter Cartesian coordinates for the pole
or, if you want to use the last programmed position,
enter no coordinates. Before programming polar
coordinates, define the pole. You can only define the
pole in Cartesian coordinates. The pole remains in
effect until you define a new pole.
Example NC blocks
Straight line LP
The tool moves in a straight line from its current position to the
straight-line end point. The starting point is the end point of the
preceding block.
U Polar coordinate radius PR : Enter the distance from
the pole CC to the straight-line end point
U Polar coordinate angle PA : Angular position of the
straight-line end point between –360° and +360°
The sign of PA depends on the angle reference axis:
„ If the angle from the angle reference axis to PR is counterclockwise:
PA
>0
„ If the angle from the angle reference axis to PR is clockwise: PA<0
Example NC blocks
X
Y
CC
X
CC
Y
CC
12 CC X+45 Y+25
X
Y
45
25
60°
60°
30
CC
12 CC X+45 Y+25
13 LP PR+30 PA+0 RR F300 M3
14 LP PA+60
15 LP IPA+60
16 LP PA+180