7Leaders

Table of Cutting Formula

Metric MM

MM

English INCH

INCH

π Dc N

π Dc N

Vc =

Vc =

1000

12 Vc 12 π Dc

Vc 1000

N = Vf = T =

N = Vf =

π Dc

N Z fz

N Z fz

Vf L

Vf L

T =

Vc= Cutting Speed

Vc= Cutting Speed

inch/min

m/min

Dc= Cutter Diameter

Dc= Cutter Diameter

inch

mm

N= RPM

N= RPM

rev/min

rev/min

Vf Feed Speed =

Vf Feed Speed =

inch/min

mm/min

fz

=

fz

=

Feed Per Tooth

Feed Per Tooth

inch/tooth

mm/tooth

fn

=

fn

=

Feed Per Revolution

Feed Per Revolution

inch/rev

mm/rev

Z

=

Z

=

Number of Flutes

Number of Flutes

Z

Z

T

=

T

=

Time of Cut In Minutes

Time of Cut In Minutes

inch

mm

L

=

L

=

Cut Length

Cut Length

mm

inch

Ap

=

Ap

=

Axial depth of cut

Axial depth of cut

mm

inch

Ae

=

Ae

=

Radial depth of cut

Radial depth of cut

mm

inch

375

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