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Drilling:
D = 10 mm
Cutting speed V=18 m/min
Spindle speed = $\frac{320 V}{D}$ = 576 rpm
Assume, Feed = 0.2 mm/rev
$\quad$ = 0.2 $\times$ mm/rev = 0.2 $\times$576
$\quad$ = 115 mm/min
Milling:
D = 6 mm
Cutting speed V=15 m/min
Spindle speed =$\frac{320 V}{D}$ = 800 rpm
Assume, f = 0.15 mm/tooth
Feed = Spindle speed $\times$2 $\times$f
$\quad$ = 800 $\times$4 $\times$ 0.15
$\quad$ = 480 mm/min
Drilling- Drill dia:
10 mm (Tool 1)
Program | Description |
---|---|
N010 G00 G71 G90 G40 G80; | Rapid, Metric, Absolute, Cancel Tool comp & canned cycle |
N020 M06 T01; | Tool change, Use tool 1 |
N030 G00 X25 Y25 S576 M03; | Rapid, go to point 1, spindle speed, clockwise ON |
N040 G44 M07; | Tool length offset, coolant ON |
N050 G81 G99 X25 Y25 Z-14 R0 F115; | canned Drill cycle at point 1 |
N060 X125 Y75; | canned Drill cycle at point 2 |
N070 G80 G00 Z0 M09; | cancel canned drilling cycle, Return to initial level, coolant OFF |
N080 M05; | spindle stop |
Milling- End Mill cutter dia:
6 mm (Tool 2)
Program | Description |
---|---|
N090 G00 G71 G90 G40 G80; | Rapid, Metric, Absolute, Cancel Tool comp & canned cycle |
N100 M06 T02; | Tool change, Use tool 2 |
N110 G42 M07; | Tool length comp, coolant ON |
N120 G00 X0 Y-5 S800 M03; | Rapid to point 3, spindle speed, clockwise ON |
N130 G01 Z-10 F480; | Feed depth at point 3 |
N140 X0 Y0; | Machine till point 4 |
N150 X120; | Machine till point 5 |
N160 G02 X150 Y30 R30; | Machine till point 6 |
N170 G01 Y100; | Machine till point 7 |
N180 X50; | Machine till point 8 |
N190 X0 Y50; | Machine till point 9 |
N200 Y0; | Machine till point 4 |
N210 G00 X0 Y-5 M09; | Rapid to point 3, coolant OFF |
N220 G00 Z0 M05; | Rapid to Z axis, spindle OFF |
N230 M30; | End of program, m/c stop |