In an orthogonal cutting process, rake angle of the tool is 220 and friction angle is 260. Using Merchant’s shear angle relationship, the value of shear angle will be
As per Merchant’s analysis:
During an orthogonal machining operation on mild steel, the results obtained are:
What is the coefficient of friction between the tool and the chip?
Match the List-I (Cutting tool material!) with List-II (Value of ‘n’ in equation, VTn = C):
The approximate value of the tool life exponent 'n’ of cemented carbide tool is
Which of the following work material has highest machining constant?
In an orthogonal cutting process, rake angle of the tool is 200 and friction angle is 240. Using Lee's and Shaffer's shear angle, the value of shear angle will be
Using the Taylor equation for tool life and letting n = 0.5 and C= 400, calculate the percentage increase in tool life when the cutting speed is reduced by 50%.
In material removal process, chipping is used to describe
Which isotherms have severe temperature gradient of the following temperature distribution in the cutting zone?
Severe temperature exists at the tool-chip interface.
Optimum cutting speed for minimum cost (Vcmin) and optimum cutting speed for maximum production rate (Vr max) have which one of the following relationship?
Minimum cost implies for minimum tool wear. Maximum production rate means higher speed irrespective of tool wear.
∴ Vr max < Vc min