Manufacturing And Production Technology
Tool life is measured by the

Number of pieces machined between tool sharpenings
Volume of material removed between tool sharpenings
Time the tool is in contact with the job
All of the listed here

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Manufacturing And Production Technology
Which of the following statement is wrong as regard to down milling?

The chips are disposed off easily and do not interfere with the cutting.
It can not be used on old machines due to backlash between the feed screw of the table and the nut.
The surface milled appears to be slightly wavy.
The coolant can be poured directly at the cutting zone where the cutting force is maximum.

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