P0 1 8 – HEIDENHAIN TNC 407 (280 580) User Manual User Manual
Page 136

5-37
TNC 425/TNC 415 B/TNC 407
5
Programming Tool Movements
CT
Path Contours - Polar Coordinates
P
0
1
8
ENT
0
ENT
Circular path CTP with tangential connection
The tool moves on a circular path, starting tangentially (at
2
) from a
preceding contour element (
1
to
2
).
Input:
• Polar coordinate angle PA of the arc end point
E
• Polar coordinate radius PR of the arc end point
E
Fig. 5.42:
Circular path around a pole,
tangential connection
•
The transition points must be defined exactly.
•
The pole is not the center of the contour arc.
COORDINATES ?
Select polar coordinates.
POLAR COORDINATES-RADIUS PR ?
Enter the distance from the pole to the arc end point, for example
PR = 10 mm.
POLAR COORDINATES-ANGLE PA ?
Enter the angle from the reference axis to PR, for example PA = 80°.
If necessary, enter:
Radius compensation R
Feed rate F
Miscellaneous function M
Resulting NC block: CTP PR +10 PA +80
CC
PA
PR
E
2
1
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