Principle Elements of Metal Machining

Principle Elements of Metal Machining:
1: Cutting Speed:
The cutting speed can be defined as the relative surface speed between the tool and the job. It is a relative term since either the tool or the job or both may be moving during cutting. It is expressed in m/min.
2: Feed:
It may be defined as the relatively small the cutting tool relative to the work piece in a direction which is usually perpendicular to the cutting speed direction. It is expressed in mm/rev or mm/stroke.
It is more complex element as compare to the cutting speed. It is expressed differently for various operations.
3:Depth of cut:
The depth of cut is the thickness of the layer of the metal remove in one cut or pass measured in a direction perpendicular to the machine surface. The depth of cut is always perpendicular to the direction feed motion.

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