The spindle speed formula calculates the recommended rotation speed of the tool or the part involved in the machining. Beneath tooth pitch the chart lists the blade speed and cutting rate for each type of material size. The faster the spindle turns andor the larger the diameter the higher the SFM.
Cutting Speed The cutting speed v of a tool is the speed at which the metal is removed by the tool from the work piece.
First calculate the cutting length per min. To determine this you might need to break out the calculator simply multiply the recommended cutting speed by the value 382 round up to 4 and then divide by the tool diameter. Do you need to figure out what your cutting time will be. SFM is based on the various properties of the given material.