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Technical data

Formulas

Cutting speed (vc)

v c = D c × π × n 1000 [ m / m i n ] v_c=\frac{D_c\times\pi\times n}{1000} [m/min]

Spindle speed (n)

n = v c × 1000 π × D c [ o b r . / m i n ] n=\frac{v_c\times1000}{\pi\times D_c} [obr./min]

Feed per revolution (fn)

f n = v f n [ m m / o b r . ] f_n=\frac{v_f}{n} [mm/obr.]
f n = f z × z   [ m m / o b r . ] f_n=f_z\times z [mm/obr.]

Feed speed (vf)

v f = f n × n   [ m m / m i n ] v_f=f_n\times n [mm/min]

Feed per tooth (fz)

f z = v f n × z [ m m ] f_z=\frac{v_f}{n\times z_c} [mm]

Machining efficiency (Q)

Q = a p × a e × v f 1000 [ c m 3 / m i n ] Q=\frac{a_p\times a_e \times v_f}{1000} [cm^3/min]
Parameter Meaning Unit
ae Cutting width mm
ap Cutting depth mm
Dc Diameter mm
fn Feed per revolution mm/obr.
fz Feed per tooth mm
n Number of revolutions obr./min
Q Machining efficiency cm³/min
vc Cutting speed m/min
vf Feed speed mm/min
z Number of teeth