HEIDENHAIN TNC 360 User Manual - Manual (Page 172)

8-19 TNC 360
8 Cycles
8.3 SL Cycles
Y
X
15 70
20
60
R12
LBL
1
2
3 4
5
6
9
8
7
Example: Roughing out a rectangular pocket
Rectangular pocket with rounded corners
Tool: center-cut end mill (ISO 1641),
radius 5 mm.
Coordinates of the island corners:
X Y
1 70 mm 60 mm
2 15 mm 60 mm
3 15 mm 20 mm
4 70 mm 20 mm
Coordinates of the auxiliary pocket:
X Y
6 –5 mm –5 mm
7 105 mm –5 mm
8
105 mm 105 mm
9
–5 mm 105 mm
Starting point for machining:
5
X = 40 mm Y = 60 mm
Setup clearance: 2 mm
Milling depth: 15 mm
Pecking depth: 8 mm
Feed rate for pecking: 100 mm/min
Finishing allowance: 0
Rough-out angle: 0 0
Feed rate for milling: 500 mm/min
Cycle in a part program
0 BEGIN PGM 360819 MM
1 BLK FORM 0.1 Z X+0 Y+0 Z–20
2 BLK FORM 0.2 X+100 Y+100 Z+0
3 TOOL DEF 1 L+0 R+3
4 TOOL CALL 1 Z S1000
5 CYCL DEF 14.0 CONTOUR GEOM.
6 CYCL DEF 14.1 CONTOUR LABEL 2/1
7 CYCL DEF 6.0 ROUGH-OUT .............................. Cycle definition ROUGH-OUT
8 CYCL DEF 6.1 SET UP –2 DEPTH –15
9 CYCL DEF 6.2 PECKG –8 F100 ALLOW +0
10 CYCL DEF 6.3 ANGLE +0 F500
11 L Z+100 R0 FMAX M6
12 L X+40 Y+50 FMAX M3 ..................................... Pre-positioning in X, Y, spindle on
13 L Z+2 FMAX M99 ............................................... Pre-positioning in Z, cycle call
14 L Z+100 FMAX M2
15 LBL 1
16 L X+40 Y+60 RR
17 L X+15
18 RND R12
19 L Y+20
20 RND R12
21 L X+70
22 RND R12
23
L Y+60
24 RND R12
25 L X+40
26 LBL 0
27 LBL 2
28 L X–5 Y–5 RL
29 L X+105
30 L Y+105
31 L X–5
32 L Y–5
33 LBL 0
34 END PGM 360819 MM
Subprogram 2:
Geometry of the auxiliary pocket
External limitation of the machined surface
(From radius compensation RL and counter-clock-
wise machining, the control concludes that contour
element 2 is a pocket)
Subprogram 1:
Geometry of the island
(From radius compensation RR and counterclockwise
machining, the control concludes that contour element 1
is an island)