HEIDENHAIN TNC 370 User Manual page 131

5
Programming Tool Movements
4
5.5 Path Contours - Polar Coordinates
Circular path CTP with tangential connection
The tool moves on a circular path, starting tangentially (at 0) from a
preceding contour element (0 to 0).
Input:
l
Polar coordinate angle PA of the arc end point @
l
Polar coordinate radius PR of the arc end point @
Fig. 5.39: Circular path around a pole,
tangential connection
* The transition paints must be defined exactly.
* T&3 PQLE
is not the center of the cw~tour arc.
Select polar coordinates.
Enter the distance from the pole to the arc end point, for example
PR = 10 mm.
r 1
R%A.R CoOm~A~ ANGLE PA B
c
d
Enter the angle from the reference axis to PR, for example PA = 80".
-
If necessary, enter also:
Radius compensation
Feed rate
Miscellaneous function
Resulting NC block: CTP PR + 10 PA +f?O
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