Q80
Larger end cutting edge angle _________ tool life.
A.
Increases
AnswerB.
Decreases
C.
Does not effect
D.
None of these
Answer: Option A
Solution
Answer: Option A
Solution:
At the same feed rate, increasing the side cutting edge angle increases the chip contact length and decreases chip thickness. As a result, the cutting force is dispersed on a longer cutting edge and tool life is prolonged.