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Explain any two of the following: Countersink drill, Blind hole, Swarf, Reamer. - Leaving Cert Engineering - Question 1 - 2019
Question 1
Explain any two of the following: Countersink drill, Blind hole, Swarf, Reamer.
Worked Solution & Example Answer:Explain any two of the following: Countersink drill, Blind hole, Swarf, Reamer. - Leaving Cert Engineering - Question 1 - 2019
Step 1
Countersink drill
Answer
A countersinking drill is a specialized cutting tool that is used to widen the opening of a pre-drilled hole, allowing for the insertion of a countersunk screw. This type of drill creates a conical shape, thereby enabling the screw head to sit flush with the surface of the workpiece. Countersinking drills are available with point angles of either 60° or 90°, which determines the angle of the hole created.
Step 2
Blind hole
Answer
A blind hole refers to a type of hole that is created by reaming, drilling, or milling to a specified depth but does not extend through to the other side of the workpiece. This technique is used in applications where it is necessary to avoid breaking through, offering accuracy in depth control for various manufacturing processes.