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Slot Milling Horsepower

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

Slot Mill Nomenclature

d₁ Effective cutting diameter: in.

z Number of inserts in the cutter:

Machining Conditions

V_c Cutting speed: sfm

a_e Radial depth of slot: in.

a_p Axial width of slot: in.

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

Radial engagement factor: Help

E Machine efficiency factor: Help

Calculated Machining Conditions

n Spindle speed: rpm

V_f Feed rate: (IPM) (no productivity formula)

Reduced feed per tooth: in. (chip load at the cut)

F_p Feed rate: (IPM) (with productivity formula)

Q_p Metal removal rate: (MRR) (no productivity formula)

Q Metal removal rate: (MRR) (with productivity formula)

A Cross-sectional area of the chip: in.²

z_c Number of inserts in the cut:

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

Calculated Force, Torque, and Required Power

F_t Tangential cutting force: lb

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

Machining power

P_s at the cutter: (HPc)

P_m at the motor: hp

These calculations are based upon theoretical values and are only intended for planning purposes; not precise projections of cutting forces. Actual results will vary. No responsibility from our company is assumed.