Feed per toothchart

Metric - 12mm/Shank Diameter. Produces closed slots for woodruff keys to DIN 6888. For milling structural, carburizing and heat treated steel up to 900N/mm2. Manufactured to BS 122 : Part 4 : 1980. Made to DIN 850. Shank to DIN 1835/D.

As the depth of cut increases, use the largest diameter cutter available to maintain a depth to diameter ratio of 1 : 1.

Feed per toothcalculator

Surface Feet Per Minute (SFPM) – The is the cutting speed of the end mill in the United States. It is the number of feet per minute that a given point on the circumference of a cutter travels per minute.

Depth of Cut (DOC) – The depth of cut of the end mill into the part surface axially. With CNC milling, it is measured in the Z axis direction.

Feed per toothformula

Meters Per Minute (MPM) – The cutting speed of the end mill. This system is used in all countries that use the Metric system. MPM represents the rate of the surface of the cutter passes over the surface of the part. Cutting speed is measured in Meters per minute.

MACHINING FORMULAS S.F.M. = 0.262 x D x R.P.M. R.P.M. = (3.82 x S.F.M.) / D I.P.R. = I.P.M. / R.P.M. or CHIP LOAD x F I.P.M. = R.P.M. x I.P.R. CHIP LOAD = I.P.M. / (R.P.M. x F) or I.P.R. / F F= number of flutes D= diameter of cutter R.P.M= revolutions per minute S.F.M= surface feet per minute I.P.M= feed rate: inches per minute I.P.R= inches per revolution

Feed per toothin inches

Revolutions Per Minute (RPM) – The spindle speed rate of the cutter. This value will be calculated from a selected S.F.P.M. or MPM.

Inches Per Revolution (IPR) – Feed rate of the cutter for each revolution of the cutter. In the inch system, the feed rate of the cutter can be calculated for each revolution of the cutter.

Metric Limits of Tolerances: Diameter +0.000 -0.127. Width 2 up to 4: - 0.014 -0.028; 4 up to 7: - 0.020 -0.038; 7mm up: - 0.025 -0.047.

Millimeters Per Revolution (MMPR) – Feed rate of the cutter each revolution of the cutter. In the metric system, the feed rate of the cutter can be calculated for each revolution of the cutter.