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Home » Customer Support » Metalworking » Calculators » Turning » Cutting Forces, Torque, and Horsepower When Turning with KM Quick-Change Tooling

Cutting Forces, Torque, and 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)

Turning Tool Dimensions

KM Input KM size:

f Distance from the centerline to the nose radius of the insert: in.

l₁ Distance from the flange face to the nose radius of the insert: in.

Workpiece

D_m Diameter: in.

Brinell Hardness: HB

p Power constant: hp/ln.³/min. Help

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Machining Conditions

a_p Depth of cut: in.

l_m Length of cut: in.

f_n Feed rate: ipr.

V_c Cutting speed: sfm.

E Machine tool efficiency factor: Help

n Spindle speed: rpm.

Q_z Metal removal rate: ln.³/min.

t_c Cutting time: min sec

Safe Operating Conditions

C_L Empirical coefficient for load:

F_max Maximum permissible load applied to KM joint: lb.

F_tmax Maximum permissible tangential force: lb.

C_T Empirical coefficient for torque:

T_tmax Maximum permissible torque applied to KM joint: ft-lbs..

T_p Maximum permissible actual torque: ft-lbs..

Cutting Forces, Torque, and Horsepower Results

F_t Actual tangential force: lb. should not exceed F_{t max}

F_f Feed force: lb.

F_r Radial force: lb.

R Resultant force: lb.

T Actual torque: ft-lbs.. should not exceed T_p

HPc Horsepower at the cutting tool: hp.

P_m Horsepower 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.