What is the approximate % change in the life, t, of the tool with zero rake angle used in orthogonal cutting when its clearance angle, a, is changed from 10 to 7 deg? (Hints : Flank wear rate is proportional to cot a) (a) 30% increase (c) 70% increase (b) 30% decrease (d) 70% decrease

What is the approximate % change in the life, t, of the tool with zero rake angle used in orthogonal cutting when its clearance angle, a, is changed from 10 to 7 deg? (Hints : Flank wear rate is proportional to cot a) (a) 30% increase (c) 70% increase (b) 30% decrease (d) 70% decrease

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Machining Processes and Machine Tools

Machining is represented as the process in which an excessive amount of substance is eliminated from the particular element in the form of pieces. In machining, cutting tools such as rotary tools, lathe, drill press, grinder, chop saw, welders, and many more are applied to get the desired shape. As compared to other manufacturing processes, machining is precise and versatile.

Question

What is the approximate % change in the life, t,
of the tool with zero rake angle used in orthogonal
cutting when its clearance angle, a, is changed
from 10 to 7 deg?
(Hints Flank wear rate is proportional to cot a)
(a) 30% increase
(c) 70% increase
(b) 30% decrease
(d) 70% decrease

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