Countersinking is an operation of bevelling the end of a drilled hole. The tool used is called a countersink.
15) The process of beveling the end of existing hole is called
Answer is:
Counter-sinking
Explanation:
Related Drilling and Reaming MCQ - Machinist(Set-1) with Answers
Answer is:
Drift
Explanation:
Drift tool is used to remove taper shank drills from the machine spindle.
Answer is:
Arbor
Explanation:
The drill chucks are held on the machine spindle by means of an arbor fitted on the drill chuck.
Answer is:
Smaller than the machine spindle
Explanation:
Drill sleeve is used when the taper shank of the drill is smaller than the machine spindle.
Answer is:
8 Degree to 12 Degree
Explanation:
The lip clearance angle of twist drill for general purpose should be 8 Degree to 12 Degree.
