Manufacturing And Production Technology
The lip clearance angle is the angle formed by the

Leading edge of the land with a plane having the axis of the drill
None of the listed here
Flank and a plane at right angles to the drill axis
Chisel edge and the lip as viewed from the end of a drill

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Manufacturing And Production Technology
In plunge grinding

The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face
The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face

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