Mild steel
Copper
Aluminium
Brass
A. Mild steel
Finishing a drilled hole
Producing a large hole without drilling
Truing a hole for alignment
Enlarging a drilled hole
Made by cold pressing of aluminium oxide powder
Available in the form of tips
Brittle and have low bending strength
All of these
Wear of bond
Breaking of abrasive grains
Wear of abrasive grains
Cracks on grinding wheel
Arithmetical progression
Geometrical progression
Harmonical progression
Any one of these
Tool steels
Sintered carbides
Glass
All of these
By a form tool
By setting over the tail stock
By a taper turning attachment
By swivelling the compound rest
10 r.p.m.
20 r.p.m.
120 r.p.m.
180 r.p.m.
Water
Soluble oil
Dry
Heavy oils
Counter-sinking
Counter-boring
Trepanning
Spot facing
Improve the accuracy of location
Reduce the tendency to over-index
Improve upon the acceleration and deceleration characteristics
Reduce the cycle time
Body centred cubic
Base centred cubic
Hexagonal closed packed
Body centred tetragonal
0° to 8°
9° to 15°
16° to 20°
21° to 25°
Against the rotating cutter
At angle of 60° to the cutter
In the direction of the cutter
At the right angle to the cutter
Smoothing and squaring the surface around a hole
Sizing and finishing a small diameter hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
Cutting helical grooves on the external cylindrical surface
At its recrystallisation temperature
Above its recrystallisation temperature
Below its recrystallisation temperature
At two thirds of the melting temperature of the metal
Work material
Tool material
Working conditions
Type of chip produced
Wheel is too hard or wheel revolves at a very high speed
Wheel is too soft or wheel revolves at a very slow speed
Wheel is too hard and wheel revolves at very slow speed
Wheel is too soft and wheel revolves at a very high speed
Machining horizontal surface
Machining vertical surface
Machining angular surface
All of these
Counter-boring
Grooving
Knurling
Facing
πd
πdn
πdn sinα
πdn cosα
Grinding at high speed results in the reduction of chip thickness and cutting forces per grit.
Aluminium oxide wheels are employed.
The grinding wheel has to be of open structure.
All of the above
Boring
Drilling
Reaming
Internal turning
By which the face of the tool is inclined towards back
By which the face of the tool is inclined sideways
Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Bevelling the extreme end of a workpiece
Embossing a diamond shaped pattern on the surface of a workpiece
Reducing the diameter of a workpiece over a very narrow surface
Machining the ends of a workpiece to produce a flat surface square with the axis
Counter-sinking
Counter-boring
Trepanning
Spot facing
Cracking at the cutting edge due to thermal stresses
Chipping of the cutting edge
Plastic deformation of the cutting edge
All of these
20.56
26.56
30.56
36.56
A to H
I to P
Q to Z
A to P
Incomplete penetration
Shrinkage void
Slag Entrapment (Inclusions)
Incomplete fusion
Drill remover
Drill puller
Drift
Drill drawer