Approaching On A Straight Line With Tangential Connection: Appr Lt; Approaching On A Straight Line Perpendicular To The First Contour Point: Appr Ln - HEIDENHAIN TNC 620 User Manual

Approaching on a straight line with tangential
connection: APPR LT
The tool moves on a straight line from the starting point P
an auxiliary point P . It then moves to the first contour point P
H
on a straight line that connects tangentially to the contour. The
auxiliary point P is separated from the first contour point P
H
distance LEN.
Use any path function to approach the starting point P
Initiate the dialog with the APPR/DEP key and APPR LT soft key:
Coordinates of the first contour point P
LEN: Distance from the auxiliary point P
first contour point P
Radius compensation RR/RL 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
Use any path function to approach the starting point P
Initiate the dialog with the APPR/DEP key and APPR LN soft key:
Coordinates of the first contour point P
Length: Distance to the auxiliary point P
enter LEN as a positive value!
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 LEN15 RR F100
9 L X+20 Y+35
10 L ...
TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 3/2014
Approaching and departing a contour
to
S
by the
A
.
S
A
to the
H
A
P without radius compensation
S
P with radius comp. RR, distance P
A
End point of the first contour element
Next contour element
.
S
A
. Always
H
Approach PS without radius compensation
PA with radius comp. RR
End point of the first contour element
Next contour element
A
6.3
zu P : LEN=15
H A
195
6