Manufacturing And Production Technology
The tool life in case of a grinding wheel is the time

Taken for the wheel to be balanced
Between two successive regrinds of the wheel
Taken for a wear of 1 mm on its diameter
Taken between two successive wheel dressings

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Manufacturing And Production Technology
Side relief angle of a single point tool is the angle

Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
By which the face of the tool is inclined sideways
Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
By which the face of the tool is inclined towards back

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