HEIDENHAIN TNC 310 (286 140) - Manual (Page 74)

62 6 Programming: Programming Contours
Approach P
S
without radius compensation
P
A
with radius comp. RR, distance P
H
to P
A
: LEN=15
End point of the first contour element
Next contour element
X
Y
10
10
20
P
A
RR
P
S
R0
P
H
RR
RR
40
15
35
20
Approach P
S
without radius compensation
P
A
with radius comp. RR
End point of the first contour element
Next contour element
X
Y
20
10
20
P
A
RR
P
S
R0
15
P
H
RR
RR
40
35
35
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 from P
H
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.
ú Use any path function to approach the starting point P
S
.
ú Initiate the dialog with the APPR/DEP key and APPR
LT soft key:
ú Coordinates of the first contour point P
A
ú LEN: Distance from the auxiliary point P
H
to the
first contour point P
A
ú Radius compensation for machining
Example NC blocks
7 L X+40 Y+10 R0 FMAX M3
8 APPR LT X+20 Y+20 Z-10 LEN15 RR F100
9 L X+35 Y+35
10 L ...
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 from P
H
to the first contour point P
A
on a straight line perpendicular to the first contour element. The
auxiliary point P
H
is separated from the first contour point P
A
by the
distance LEN plus the tool radius.
ú Use any path function to approach the starting point P
S
.
ú Initiate the dialog with the APPR/DEP key and APPR LN soft key:
ú Coordinates of the first contour point P
A
ú Length: Distance from the auxiliary point P
h
to the
first contour point P
A
Always enter LEN as a positive value!
ú Radius compensation RR/RL for machining
Example NC blocks
7 L X+40 Y+10 R0 FMAX M3
8 APPR LN X+10 Y+20 Z-10 LEN+15 RR F100
9 L X+20 Y+35
10 L ...
6.3 Cont
our
Appr
oac
h and Depar
tu
re