HEIDENHAIN iTNC 530 (60642x-04) - Manual (Page 233)

HEIDENHAIN iTNC 530 233
6.3 Cont
our appr
oac
h
and depar
tur
e
Departing on a straight line with tangential
connection: DEP LT
The tool moves on a straight line from the last contour point P
E
to the
end point P
N
. The line lies on the extension of the last contour
element. P
N
is separated from P
E
by the distance LEN.
 Program the last contour element with the end point P
E
and radius
compensation
 Initiate the dialog with the APPR/DEP key and DEP LT soft key:
 LEN: Enter the distance from the last contour element
P
E
to the end point P
N
Example NC blocks
Departing on a straight line perpendicular to the
last contour point: DEP LN
The tool moves on a straight line from the last contour point P
E
to the
end point P
N
. The line departs on a perpendicular path from the last
contour point P
E
. P
N
is separated from P
E
by the distance LEN plus the
tool radius.
 Program the last contour element with the end point P
E
and radius
compensation
 Initiate the dialog with the APPR/DEP key and DEP LN soft key:
 LEN: Enter the distance from the last contour element
to P
N
Always enter LEN as a positive value!
Example NC blocks
X
Y
20
P
E
RR
P
N
R0
RR
12.5
23 L Y+20 RR F100
Last contour element: P
E
with radius compensation
24 DEP LT LEN12.5 F100 Depart contour by LEN=12.5 mm
25 L Z+100 FMAX M2
Retract in Z, return to block 1, end program
X
Y
20
P
E
RR
P
N
R0
RR
20
23 L Y+20 RR F100 Last contour element: P
E
with radius compensation
24 DEP LN LEN+20 F100
Depart perpendicular to contour by LEN=20 mm
25 L Z+100 FMAX M2 Retract in Z, return to block 1, end program