Manufacturing And Production Technology
The effect of setting a boring tool above center height leads to

Increase in the effective rake angle and a decrease in the effective clearance angle
Increase in both effective rake angle and effective clearance angle
Decrease in the effective rake angle and an increase in the effective clearance angle
Decrease in both effective rake angle and effective clearance angle

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Manufacturing And Production Technology
In ultrasonic machining, the metal is removed by

Erosion caused by rapidly recurring spark discharges between the tool and work
Using abrasive slurry between the tool and work
Maintaining an electrolyte between the work and tool in a very small gap between the two
Direct contact of tool with the work

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