Manufacturing And Production Technology
The tool life is said to be over if

Overheating and fuming due to heat of friction starts
All of these
Poor surface finish is obtained
There is sudden increase in cutting forces and power consumption

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Manufacturing And Production Technology
The facing is an operation of

Embossing a diamond shaped pattern on the surface of a workpiece
Beveling the extreme end of a workpiece
Machining the ends of a workpiece to produce a flat surface square with the axis
Reducing the diameter of a workpiece over a very narrow surface

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Manufacturing And Production Technology
Trepanning is an operation of

Smoothing and squaring the surface around a hole
Sizing and finishing a small diameter hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
Making a cone-shaped enlargement of the end of a hole

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