EXERCISE NO. 2 (Part 1) - POWER TOOLS - DRILLING
Mark out of 10 Marks:
No 1. The sketches below show views of a drill in a number of different positions. The drill parts are numbered.
Write the number of each drill part opposite its proper name in the list below:
Flank of the point Lip clearance angle
Cutting lip Chisel edge angle
Face of the flute Chisel edge
Flute Outer corner
Body clearance Trailing edge
Point angle Land
No 2. Circle the letter of the drill profile above that shows the point angle.
No 3. Drill flutes are used for: (Circle the most appropriate letter.)
(a) Helping to form the cutting edge of the drill point
(b) Curling the chips for easy removal
(c) Forming channels to allow the chips to escape from the hole
(d) All of the above purposes
(e) None of the above purposes.