HEIDENHAIN TNC 620 Programming Station, Руководство пользователя

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Approaching and departing a contour 6.3
6
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
247
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
G41/G42
for machining
R0=G40; RL=G41; RR=G42
Example NC blocks
N70 G00 X+40 Y+10 G40 M3*
Approach P
S
without radius compensation
N80 APPR LT X+20 Y+20 Z-10 LEN15 G42 F100*
P
A
with radius comp. G42, distance P
H
to P
A
: LEN=15
N90 G01 X+35 Y+35*
End point of the first contour element
N100 G01 ...*
Next contour element
Approaching on a straight line perpendicular to the
first contour point:
APPR LN
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
G41/G42
for machining
Example NC blocks
N70 G00 X+40 Y+10 G40 M3*
Approach PS without radius compensation
N80 APPR LN X+10 Y+20 Z-10 LEN15 G24 F100*
PA with radius comp. G42
N90 G01 X+20 Y+35*
End point of the first contour element
N100 G01 ...*
Next contour element