3 cont our appr oac h and depar tur e – HEIDENHAIN iTNC 530 (60642x-03) User Manual
Page 224
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Programming: Programming contours
6.3 Cont
our appr
oac
h
and depar
tur
e
Approaching on a straight line with tangential
connection: APPR LT
The tool moves on a straight line from the starting point P
S
to an
auxiliary point P
H
. It then moves to the first contour point P
A
on a
straight line that connects tangentially to the contour. The auxiliary
point P
H
is separated from the first contour point P
A
by the distance
LEN.
Use any path function to approach the starting point P
S
Initiate the dialog with the APPR/DEP key and APPR LT soft key:
Coordinates of the first contour point P
A
LEN: Distance from the auxiliary point P
H
to the first
contour point P
A
Radius compensation RR/RL for machining
Example NC blocks
Approaching on a straight line perpendicular to
the first contour point: APPR LN
The tool moves on a straight line from the starting point P
S
to an
auxiliary point P
H
. It then moves to the first contour point P
A
on a
straight line perpendicular to the first contour element. The auxiliary
point P
H
is separated by the distance LEN plus the tool radius from the
first contour point P
A
.
Use any path function to approach the starting point P
S
Initiate the dialog with the APPR/DEP key and APPR LN soft key:
Coordinates of the first contour point P
A
Length: Distance to the auxiliary point P
H
. Always
enter LEN as a positive value!
Radius compensation RR/RL for machining
Example NC blocks
X
Y
20
10
20
P
A
RR
P
S
R0
15
P
H
RR
RR
40
35
35
7 L X+40 Y+10 R0 FMAX M3
Approach P
S
without radius compensation
8 APPR LT X+20 Y+20 Z-10 LEN15 RR F100
P
A
with radius comp. RR, distance P
H
to P
A
: LEN=15
9 L X+35 Y+35
End point of the first contour element
10 L ...
Next contour element
X
Y
10
10
20
P
A
RR
P
S
R0
P
H
RR
RR
40
15
35
20
7 L X+40 Y+10 R0 FMAX M3
Approach P
S
without radius compensation
8 APPR LN X+10 Y+20 Z-10 LEN15 RR F100
P
A
with radius comp. RR
9 L X+20 Y+35
End point of the first contour element
10 L ...
Next contour element