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
Summary of Contents for TNC 620 Programming Station
Page 4: ......
Page 5: ...Fundamentals ...
Page 28: ...Contents 28 HEIDENHAIN TNC 620 ISO Programming User s Manual 9 2016 ...
Page 57: ...1 First Steps with the TNC 620 ...
Page 77: ...2 Introduction ...
Page 110: ......
Page 111: ...3 Fundamentals file management ...
Page 166: ......
Page 167: ...4 Programming aids ...
Page 194: ......
Page 195: ...5 Tools ...
Page 234: ......
Page 235: ...6 Programming contours ...
Page 284: ......
Page 285: ...7 Data transfer from CAD files ...
Page 304: ......
Page 305: ...8 Subprograms and program section repeats ...
Page 323: ...9 Programming Q parameters ...
Page 384: ......
Page 385: ...10 Miscellaneous functions ...
Page 407: ...11 Special functions ...
Page 433: ...12 Multiple axis machining ...
Page 475: ...13 Pallet management ...
Page 480: ......
Page 481: ...14 Manual Operation and Setup ...
Page 549: ...15 Positioning with Manual Data Input ...
Page 554: ......
Page 555: ...16 Test Run and Program Run ...
Page 590: ......
Page 591: ...17 MOD Functions ...
Page 622: ......
Page 623: ...18 Tables and Overviews ...