The width of cutting edge of a parting off tool varies from
A. 3 to 12 mm
B. 5 to 20 mm
C. 8 to 30 mm
D. 15 to 40 mm
Answer: Option A
Solution (By Examveda Team)
The width of the cutting edge of a parting-off tool depends on the type of material being cut and the rigidity required for the operation.A typical range for parting-off tools used in lathe operations falls between 5 mm to 20 mm, which provides a balance between strength and precision.
Narrower tools (closer to 5 mm) are used for smaller workpieces and precision cuts, while wider tools (up to 20 mm) are preferred for heavier and tougher materials to reduce deflection and ensure stability.
Maximum possible Clearance=max.Hole size - Min.Shaft size
Max.hole size = 25.02
Min.Shaft size = 24.99
Max.clearance=25.02 - 24.99 = 0.03mm
In micron 30