Feed (f) : Distance between newly machined surface and the chip evolved is called.
Clearance Angle : The angle we provide between the flank face of tool and newly machined surface so that no rubbing can take place between tool and machined surface. It is alwayes provided to the cutting tool to provide loss of energy and damages to both work piece and the tool. typical range of clearance angle is from 3 degrees to 5 degrees, depending upon tool work piece material and the type of machining operation like turning , boring , milling etc...
Rake angle : The angle formed between the rake face of the tool and cutted chip.
+ve rake angle : Positive rake angle helps reduces the cutting forces.
-ve rake angle : To increase edge strength and the life of the tool.
zero rake angle : To simplify the design of the tool.
Tool chip contact length : The point from where chip started and ditached the tool's rake face is called tool-chip contact length.
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