MAYDOWN SOLID CARBIDE END MILLS, SLOT DRILLS and BALL NOSE CUTTING DATA Cutters from page E2, E3

Material	Surface Speed		Feed per tooth fz (diameters stated in mm)
	Vc M / Min
	Uncoated	Coated	0.4-1	2	3	4	5	6	7-8	9-10	11-15	16-20
			mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
Steel	60-120	80-160	.008	.010	.013	.016	.018	.022	.030	.038	.052	.060
Stainless	30-70	50-130	.008	.010	.013	.016	.018	.022	.030	.038	.052	.060
Cast Iron	30-80	50-140	.010	.014	.017	.021	.025	.030	.045	.055	.070	.090
Titanium	20-70	40-130	.008	.010	.013	.016	.018	.022	.030	.038	.052	.060
Copper	100-180	190-390	.012	.018	.022	.027	.035	.045	.060	.075	.095	.130
Aluminium	150-450	-	.012	.018	.022	.027	.035	.045	.060	.075	.095	.130
Aluminium	50-90	-	.012	.018	.022	.027	.035	.045	.060	.075	.095	.130
(high silicon)
Plastics	70-140	-	.012	.018	.022	.027	.035	.045	.060	.075	.095	.130

RPM =	Vc x 1000		Table Feed = RPM x fz x Number of teeth
	Dia x π
Note: Feed rate should be reduced by around 50% of Long Series cutters

For:	To Relieve:
Harder materials - lower speed and feed rate Easily machined materials - raise speed and feed rate Improving finish - raise speed, lower feed Abrasive materials - lower speed, raise feed	"Chatter" - increase feed rate Frail set-up - raise speed, lower feed Excessive edge wear - reduce speed, raise feed Excessive edge chipping - raise speed, lower feed.
Solid carbide cutters have hardness approaching twice that of High Speed Steel, and the mechanical properties produce rigidity virtually without deflection under bending stress. Machine tools and fixtures should be robust, rigid and free of 'play'. Speeds and feeds should be selected with care and adjusted as found expedient for each particular job.

G21 Previous Page Next Page