SME Tools, Speeds and Feeds Log

Useful Formulas for Machining

Note: These speeds were designed for maximum tool life, conservative in nature, and are a good place to start for higher maching speeds.

#1.Machining Speed N=12V/( pi*D) =>Approx. 4V/D V=SFM N=RPM D=inches	#2. Feed Rate, Mill F=fnN (mill) F=Feed Rate (ipm) f=feed rate (ipt) n=# of teeth N= RPM
#3. Feed Rate, Lathe F=fN(lathe, drill)	#4.Material Removal Rate, Mill MRR=FWt W=width of cut t=depth of cut
#5. Material Removal Rate, Lathe MRR=12VFt t=depth of cut	#6. Taylor's Tool Life V*T^n=C

Material	Tool Material	Operation	Cutting Speed (V) (ft/min)	Feed (f)
Aluminum and Brass	Carbide Inserts	Mill Turn, Face(lathe)	800 SFM 800 SFM	.001 IPT .003 IPR
Aluminum and Brass	High Speed Steel	Mill End Mill Turn, Face(lathe) Drill, Counterbore Ream Centerdrill	150 SFM 75 SFM 150 SFM 80 SFM 40 SFM 600 SFM	.002 IPT .003 IPT .003 IPT .013 IPR .032 IPR Handfeed
Low Carbon Steel	Carbide Inserts	Turn, face(lathe)	200 SFM	.006IPR
Low Carbon Steel	High Speed Steel	Turn(lathe) Plunge Cut Mill Drill, Counterbore End Mill Thread Centerdrill	80SFM 30 SFM 50 SFM 40 SFM 20 SFM 12 SFM 500 RPM	.006 IPR Hand .001 IPT Hand Hand Thds./In Handfeed

Tools, Speed and Feeds LOG
SME's Haas CNC Mill

Material	Tool	Length	Flutes	Speed rpm	Feed ipm	D.O.C in.	StepOver in.
Delrin	1/4" endmill		4	1500	40
Delrin	1" endmill	3	4	1000	20
Aluminum	1/2" ball mill	3	4	1000	13	.15	.15
Aluminum	1" endmill	3	4	900	14	.20	.75