To complete calculations, enter known data into
the empty boxes on the left hand side below.All mandatory fields for calculations are indicated by (*).All calculations are based on industry
formulas and are intended to provide theoretical values.Actual results could vary and SGS Tool
Company assumes no responsibility.

Surface Meters per Minute

Solution

Revolutions per
Minute*

Constant

End Mill Diameter

Surface
Meters per Minute

0.00314

SMM

Revolutions per Minute

Solution

Surface Meters per
Minute

Constant

End Mill Diameter

Revolutions
per Minute

318.057

RPM

Millimeters per Minute

Solution

Millimeters per
Tooth (Chipload)*

Revolutions per Minute

Cutting
Edges

Millimeters per Minute

mmPM

Millimeters per Tooth (Chipload)

Solution

Millimeters per
Minute

Revolutions per Minute

Cutting
Edges

Millimeters per Tooth (Chipload)

mmPT

Millimeters per Revolution

Solution

Millimeters per
Tooth (Chipload)

Cutting
Edges

Millimeters per Revolution

mmPR

Actual Working Diameter Parameter Adjustment

Solution

When machining at axial depths
less that 1/2 the radius of the cutting tool, the actual diameter engaged in
the cut changes and your parameters must be adjusted.The Effective Cutting Diameter engaged must
be used for the calculations.

Effective
Cutting Diameter

Deff

Revolutions
per Minute for Deff

RPM

This new Spindle Speed has been
optimized for the Depth of Cut

Metric Radial Chip Thinning Feed Calculator

Solution

Whenever the axial depth is less
than half the tool diameter (as in Ad2) the chip thickness is less than the
feed per tooth and additional feed is possible using the chip thinning
calculation.The Effective Diameter
(Deff) must be used to properly calculate.

Millimeters per Minute w/ Thinning

mmPM

This new Feedrate has been
optimized for the Depth of Cut

Surface Finish Calculator

Solution

Cusp Height gives an idea of
Surface Finish and is most accurate when applied to a flat surface.By
reducing the Pitch of Step Over distance, Cusp Height is reduced and a finer
finish is produced.If a desired Cusp Height is known, the appropriate Pitch
can be calculated.

Enter the Pitch
(Step Over) to Calculate Cusp Height

Cusp Height

mm

Enter Cusp Height
to Calculate Pitch (Step Over)

Pitch (Step
Over)

mm

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