R = 20 y x z – HEIDENHAIN TNC 360 User Manual User Manual
Page 110
TNC 360
5-26
5
Programming Tool Movements
RND
5.4
Path Contours – Cartesian Coordinates
Example for exercise: Rounding a corner
Coordinates of
the corner point:
X
= 95 mm
Y
=
5 mm
Rounding radius:
R
= 20 mm
Milling depth:
Z
= –15 mm
Tool radius:
R
= 10 mm
100
5
–15
100
95
R = 20
Y
X
Z
Part program
0
BEGIN PGM 360526 MM ................................... Begin program
1
BLK FORM 0.1 Z X+0 Y+0 Z–20 ........................ Define the workpiece blank
2
BLK FORM 0.2 X+100 Y+100 Z+0
3
TOOL DEF 1 L+0 R+10 ...................................... Define the tool
4
TOOL CALL 1 Z S1500 ....................................... Call the tool
5
L Z+100 R0 FMAX M6 ....................................... Insert the tool
6
L X–10 Y–5 FMAX ............................................... Pre-position the workpiece
7
L Z–15 FMAX M3
8
L X+0 Y+5 RR F100 ............................................ First contour element
9
L X+95 ................................................................ First straight line for the corner
10
RND R20 ............................................................. Round the corner with a tangential arc with radius
R = 20 mm between the two sides
11
L Y+100 .............................................................. Second straight line for the corner
12
L X+120 Y+120 R0 FMAX .................................. Retract the tool and end program
13
L Z+100 R0 FMAX M2
14
END PGM 360526 MM
To program a tangential arc between two contour elements:
ROUNDING OFF RADIUS R?
Enter the rounding radius, for example R = 10 mm.
FEED RATE? F=
Enter the feed rate for the rounding radius, here F = 100 mm/min.
Resulting NC block: RND 10 F 100
1
e.g.
0
ENT
0
1
e.g.
0
ENT