HEIDENHAIN TNC 407 (280 580) User Manual User Manual
Page 181
6-7
TNC 425/TNC 415 B/TNC 407
6
Subprograms and Program Section Repeats
100
–20,2
Y
X
Z
–30
–51
–70
11
50
89 100
21,646
78,354
R30
100
8
Y
X
Z
9
10
11
22
21
20
19
Example for exercise: Milling without radius compensation using program section repeats
Machining sequence:
• Upward milling direction
• Machine the area from X=0 to 50 mm (pro-
gram all X coordinates with the tool radius
subtracted) and from Y=0 to 100 mm : LBL 1
• Machine the area from X=50 to X=100 mm
(program all X coordinates with the tool radius
added) and from Y=0 to 100 mm : LBL 2
• After each upward pass, the tool is moved by
an increment of +2.5 mm in the Y axis.
The illustration to the right shows the block
numbers containing the end points of the
corresponding contour elements.
Part program:
0
BEGIN PGM BUMP MM
1
BLK FORM 0.1 Z X+0 Y+0 Z–70 ........................ Note: the blank form has changed
2
BLK FORM 0.2 X+100 Y+100 Z+0
3
TOOL DEF 1 L+0 R+10
4
TOOL CALL 1 Z S1000
5
L X–20 Y–1 R0 FMAX M3
6
LBL 1
7
L Z–51 F MAX
8
L X+1 F100
9
L X+11.646 Z–20.2
10
CT X+40 Z+0
11
L X+41
12
L Z+10 F MAX
13
L X–20 IY+2.5
14
CALL LBL 1 REP40/40
15
L Z+20 F MAX
16
L X+120 Y–1
17
LBL 2
18
L Z–51 F MAX
19
L X+99 F100
20
L X+88.354 Z–20.2
21
CT X+60 Z+0
22
L X+59
23
L Z+10 F MAX
24
L X+120 IY+2.5
25
CALL LBL 2 REP40/40
26
L Z+100 F MAX M2
27
END PGM BUMP MM
Program section repeat 1: machining from
X=0 to 50 mm and from Y=0 to 100 mm
Program section repeat 2: Machining from X=50 to
100 mm and from Y=0 to 100 mm
Retract, re-position