Cutting speed
Cutting speed is nothing however the move speed of either the work or the cutter. it's measured by the unit—revolution per minute (rpm) and selected by N. In machining or metal removal operation, relative rate between cutter and work is necessary so as to chop (shear off) excess material to urge desired form, size and tolerance. This relative rate may be imparted in numerous directions reckoning on the need, maybe in straight turning operation in shaper the cutting speed and feed square measure given at the same time in perpendicular directions. the most cutting action is accomplished thanks to the cutting rate.
However, cutting rate may be provided either by rotating the cutter keeping work mounted or by rotating the work keeping cutter mounted. just in case shaper operations, akin to turning, grooving, centre drilling, parting, etc., a cylindrical work is employed. therefore the work is turned at sure speed whereas the cutter is unbroken mounted. Therefore, here the move speed of the cylindrical work is understood as Cutting Speed, that is measured in revolutions per minute.
On the opposite hand, for edge, drilling and grinding operations, the cutter (known as edge cutter, drill and wheel, respectively) is of cylindrical form and therefore it rotates at sure speed whereas the work is unbroken mounted. thus during this case, the move speed of the cutter is nothing however Cutting Speed, that is additionally measured in revolutions per minute. it's to be noted that aside from cutting speed, another 2 motions (feed motion and depth of cut) are needed to chop materials expeditiously and effectively.
Cutting Velocity
It is the tangential rate of either the rotating work or the rotating cutter. it's measured by the unit—meters per minute (m/min) and selected by Vc. Any rotating object includes a tangential rate at any purpose on its body except the axis of rotation. The way you go from the axis of rotation, the additional tangential rate you'll get for a similar move speed.
Since, in some machining processes, either the work or the cutter rotates, therefore the same will have sure tangential rate. The tangential rate of the work or cutter (whichever applicable) at the boundary is understood as Cutting rate. in contrast to cutting speed, that could be a scalar amount, cutting rate could be a vector and its direction changes from one purpose to a different on the boundary of the work or cutter. browse more: distinction between cutting rate and cutting speed.
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