HEIDENHAIN TNC 370 - Examples for Exercise

8 Cycles
4
8.4 Cycles for Machining Hole Patterns
Examples for exercise
Roughing and finishing rectangular pockets on a pitch circle
Input values for CYCL 220:
Center X axis: +50 mm (Q216)
Center Y axis: +50 mm (Q217)
Pitch circle diameter:
+70 mm (Q244)
Starting angle: +o o (Q245)
Stopping angle: +360 ’ (0246)
Angular step: +O” (Q247)
No. of math. operations:
8 (Q241)
Setup clearance: +2 (Q200)
Workpiece surface: +0 mm (Q203)
2nd setup clearance:
+I 00 mm (0204)
Input values for CYCL 4 (pocket roughing)
Length of pocket in X: 22 mm
Width of pocket in Y: 12 mm
Input values for CYCL 212 (pocket finishing)
Length of pocket in X:
24 mm
Width of pocket in Y: 14 mm
Allowance in X: +I mm
0 BEGIN PGM 3702802 MM
1 BLK FORM 0.1 Z X+0 Y+O Z-30
2 BLK FORM 0.2 X+1 00 Y+lOO Z+O
3 TOOL DEF 1 L+O R+3
4 TOOL CALL 1 Z S2500
5 L Z+200 RO F MAX M3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Retract tool, spindle ON
6 CYCL DEF 4.0 POCKET MILLING
7 CYCL DEF4.1 SETUP2
8 CYCL DEF 4.2 DEPTH -20
9 CYCL DEF 4.3 PECKG 5 F150
10 CYCL DEF 4.4 X+22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Length for roughing
in X
11 CYCL DEF 4.5 Y+12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Width for roughing in Y
12 CYCL DEF 4.6 F250 DR+
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Define cycle for pocket roughing
13 CALL LBL 1 . . . . . . . .._._.._........................................ Call subprogram in which the coordinate system is defined
14 CYCL DEF 212 POCKET FINISHING
Q200=0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not to be entered,
in effect from cycle 220
Q201=-20
Q206=250
Q202=5
Q207=350
Q203=+0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not to be entered, in effect from cycle 220
Q204=0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not to be entered, in effect from cycle 220
Q216=+0
Q217=+0
Q218=24
Q219=14
Q220=4
Q221 =+I ._._........................................................ Define cycle for pocket finishing, 1 mm finishing allowance
15 CALL LBL 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call subprogram in which the coordinate system is defined
16 L Z+200 RO F MAX M2 Retract tool, end of main program
Continued... u
8-38
TNC 370