HEIDENHAIN TNC 406 - Manual (Page 135)

114 6 Programming: Programming Contours
6.5 P
a
th Cont
ours — P
o
lar Coor
dinat
e
s
Programming a helix
8 Polar coordinates angle: Enter the total angle of
tool traverse along the helix in incremental
dimensions. After entering the angle, identify the
tool axis with an axis selection key.
8 Coordinate : Enter the coordinate for the height of the
helix in incremental dimensions.
8 Enter the coordinate for the angle-synchronous
rotation of the electrode in incremental dimensions,
e.g., IC -1800.
8 Direction of rotation DR
Clockwise helix: DR–
Counterclockwise helix: DR+
8 Radius compensation RL/RR/R0
Enter the radius compensation according to the table
above.
Example NC blocks: Thread M6 x 1 mm with 5 revolutions
„ Always enter the same algebraic sign for the direction
of rotation DR and the incremental total angle IPA. The
tool may otherwise move in a wrong path and damage
the contour.
„ For the total angle IPA, you can enter values from
–5400° to +5400°. If the thread has more than 15
revolutions, program the helix in a program section
repeat
(see ”Program Section Repeats” on page 176)
„
If you are using an electrode with tool compensation in
the XY plane, you must rotate the electrode in
synchrony with the angle on circular arcs. Enter the
same angle in incremental dimensions for the C axis as
for the total angle.
12 CC X+40 Y+25
13 L Z+0 R F M37
14 LP PR+3 PA+270 RL F M
15 CP IPA-1800 IZ+5 IC-1800 DR- R F M
Y
X
Z
25
40
5
270°
R3
CC