Общий каталог Palbit - страница 128

CUTTING DATA CALCULATION

A Cálculo de condições de corte | Cálculo de datos de corte

Formulas

Spindle Speed (rev/min)

vc 1000 n = . π Dc

Cutting Speed (m/min)

n π Dc vc = 1000

Feed Speed (mm/min) Feed per Revolution (mm/rev)

vf = n Zn fz f = Zn fz

Feed per Tooth (mm/tooth) Metal removal Rate (cm³/min)

vf

fz = . ae ap vf

n Zn Q = 1000

Cutting Speed and Spindle Speed for Copying

POWER REQUIREMENT CALCULATION

Cálculo de potência requerida | Cálculo del requerimiento de potencia A

Calculating the power demand

Pc - Power (kW) ap - Depth of cut (mm)

ap x ae x vf ae - Width of cut (mm)

Pc = x kc ae

60 000 000 x vf - Feed speed (mm/min)

- Efficiency kc - Cutting force per mm²

Calculating average chip thickness (hm) and cutting force per mm² (kc)

hm - Average chip thickness (mm)

πxDcxω ω e e - Engagement angle kr - Lead angle

1 mc* - Exponent kc = x kcx hmmc kcx* - Cutting force for 1 mm chip thickness (N/mm²) * Please see these values on page 797.

Engagement angle

Nomenclature ω

e ae - Width of cut mm/radial depth of cut (mm) ap - Depth of cut mm/radial depth of cut (mm)

. Engagement Engagement Engagement Engagement

vc 1000 n - Spindle Speed (rev/min) ω ω

n = . (RPM) ae / Dc angle e ae / Dc angle e

π Dw Q - Material removal Rate (cm³/min)

Zn - Nº of theeth