Force, Torque, and Power

Calculate Tangential Force, Torque, and Machining Power for Face Milling Applications.

Unit

Conversion of Workpiece Material Rockwell (Optional)

Skip this step if you already know the Brinell hardness number(HB)

Hardness HRB OR HRC into Brinell Hardness (HB)

Characteristics of Workpiece Materials

Brinell Hardness: HB

Ultimate strength: PSI N/mm 2

Note: Ultimate Strength shown for generic steel. Please enter the actual value of your workpiece material if available, for better accuracy You may look up this info through websites such as www.matweb.com

Face Mill Nomenclature

d1 Effective cutting diameter: in mm

z Number of inserts in the cutter:

Machining Conditions

V_c Cutting speed: (SFM) m/min

a_p Axial Depth of cut: in (DOC) mm (DOC)

a_e Ratio of radial width of cut to cutting diameter: in (WOC) mm (WOC)

f_z Required feed per tooth: in. (IPT) (chip load) mm

f_z Radial engagement factor:

Most Common Workpiece Materials	W/D  ratios:
Most Common Workpiece Materials	W/D < = 0.66	0.66 < W/D < 1.0	W/D = 1.0
Aluminum alloys	1.0	1.05	1.1
Carbon and alloy steels	1.0	1.15	1.3
Cast irons	1.0	1.15	1.3
Titanium alloys	1.0	1.20	1.4
Stainless steel, High-temperature alloys	2.0	2.15	2.3

E Machine efficiency factor:

Direct Belt Drive	.9
Back Gear Drive	.75
Geared Head Drive	.7-.8
Oil - Hydraulic Drive	.6-.9

Calculate

Calculated Machining Conditions

n Spindle speed: rpm

V_f Feed rate: (IPM) (no productivity formula) mm/min (no productivity formula)

Reduced feed per tooth: in. (chip load at the cut) mm (no productivity formula)

F_p Feed rate: (IPM) (with productivity formula) mm/min (with productivity formula)

Q_p Metal removal rate: (MRR) (no productivity formula) cm3/min (no productivity formula)

Q Metal removal rate: (MRR) (with productivity formula) cm3/min (with productivity formula)

A calculator.CrossSectionalAreaOfChip in.2 mm2

z_c Number of inserts in the cut:

a_e/d₁ Ratio of radial width of cut to cutting diameter:

Calculated Required Power

F_t Tangential cutting force: lb N

T Torque at the cutter: Nm in.-lb ft-lb Nmm

Machining Power

P_s at the cutter: (HPc) KW

P_m at the motor: hp KW

These calculations are based upon theoretical values and are only intended for planning purposes. Actual results will vary. No responsibility from Kennametal is assumed.

Force, Torque, and Power

Calculate Tangential Force, Torque, and Machining Power for Face Milling Applications.

Conversion of Workpiece Material Rockwell (Optional)

Characteristics of Workpiece Materials

Face Mill Nomenclature

Machining Conditions

Calculated Machining Conditions

Calculated Required Power

Machining Power

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