Circular path ctp with tangential connection – HEIDENHAIN TNC 310 (286 140) User Manual
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6 Programming: Programming Contours
6.5 P
ath Cont
ours
—
P
olar Coor
dinat
es
6.5 P
ath Cont
ours
—
P
olar Coor
dinat
es
Example NC blocks
18 CC X+25 Y+25
19 LP PR+20 PA+0 RR F250 M3
20 CP PA+180 DR+
For incremental coordinates, enter the same sign for DR
and PA.
Circular path CTP with tangential connection
The tool moves on a circular path, starting tangentially from a
preceding contour element.
ú
Select circle functions: Press the „CIRCLE“ soft key
ú
Select the circular path CT: Press the CT soft key
ú
Select entry of polar coordinates: Press the P soft
key (2nd soft-key row).
ú
Polar coordinates radius PR: Distance from the arc
end point to the pole CC.
ú
Polar coordinates angle PA: Angular position of the
arc end point.
Example NC blocks
12 CC X+40 Y+35
13 L X+0 Y+35 RL F250 M3
14 LP PR+25 PA+120
15 CTP PR+30 PA+30
16 L Y+0
The pole CC is not the center of the contour arc!
X
Y
40
35
CC
30°
120°
R30
R25