Advanced Metalcutting
Calculators contains four
calculators for major metalcutting operations: Milling,
Turning, Boring, Drilling; and a fifth for
calculating exact Machining Time when facing, cutting off,
and deep grooving. All calculators are developed in Microsoft Excel
and execute all parameters in both U.S. and metric units. These
calculators provide computations more accurate than any other
calculators on the market and can be used by anyone involved in
manufacturing, including machinists, technicians, and
engineers.
Advanced
Computations:
Power requirements when milling, turning, boring, or drilling are
calculated by tangential force and cutting speed, or by torque and
the number of revolutions per minute. These requirements are
calculated when cutting inserts are sharp and prior to indexing or
changing them
MILLING
CALCULATOR
- Cutting
force versus ultimate tensile strength of the work material and
area of the chip.
- Torque
at spindle versus cutting force and the cutter
diameter.
- Adjustments to feed rate
depending on the cutter geometry and width of cut
TURNING
CALCULATOR
- Cutting
force components tangential force versus depth of cut, feed rate,
and the work materials power constant; feed and radial forces
versus tangential force and the coefficients of proportionality,
depending on the group of work materials.
- Torque
at spindle versus tangential force and the workpiece
diameter
BORING
CALCULATOR (in addition to the
same two features immediately above)
- Deflection versus
resulting cutting force, unsupported length of the boring bar,
moment of inertia of the bar cross-sectional area, and the modulus
of elasticity of the bar material. Note: The method of determining
feed and radial forces when turning and boring, and the calculators
that utilize this method are patented (US Patent #
6,836,697)
DRILLING
CALCULATOR
- Tangential force versus
drill diameter, feed rate, power constant of the work material, and
the drill wear factor.
- Thrust
(axial force) versus tangential force and the coefficient of
proportionality establishing thrust-to-tangential force
ratio.
- Torque
at the drill versus tangential force and the drill
diameter.
MACHINING TIME:
- Radius
of the workpiece when the machine tool spindle runs at the maximum
rpm.
- Machining time (in
minutes) when facing or cutting off to the center of the workpiece;
or when deep grooving, facing, or cutting off to a shoulder of the
workpiece.
