20.56
26.56
30.56
36.56
B. 26.56
Gang milling
Straddle milling
String milling
Side milling
For holding and guiding the tool in drilling, reaming or tapping operations
For holding the work in milling, grinding, planing or turning operations
To check the accuracy of workpiece
None of the above
Between the tool face and the ground end surface of flank
Made by the face of the tool and the plane parallel to the base of the cutting tool
Between the face of the tool and a line tangent to the machined surface at the cutting point
None of the above
Side cutting edge angle
Tool nose radius
Rake angle
End cutting edge angle
Shank, material and diameter
Shank, lip angle and size of flute
Material, length of body and helix angle
Any one of these
Chip thickness ratio
Forces during metal cutting
Wear of the cutting tool
Deflection of the cutting tool
High temperature involved
Frequent wheel clogging
Rapid wheel wear
Low work piece stiffness
3 to 12 mm
5 to 20 mm
8 to 30 mm
15 to 40 mm
Vertical boring machine
Horizontal boring machine
Precision boring machine
Jig boring machine
Truing
Dressing
Facing
Clearing
Single point cutting tool
Two point cutting tool
Three point cutting tool
Multipoint cutting tool
Cool the tool
Improve surface finish
Cool the workpiece
All of these
350°C
500°C
900°C
1100°C
Help in the movement of the sparks
Control the spark discharges
Act as coolant
All of these
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
V-threads
Whitworth threads
Buttress threads
Acme threads
Toughness
Ductility
Elasticity
Work hardening
30°
45°
60°
90°
3° to 8°
20° to 30°
60° to 90°
90° to 120°
Carbide, ceramic, cermet, borazon
Ceramic, carbide, borazon, cermet
Cermet, carbide, ceramic, borazon
Borazon, ceramic, carbide, cermet
Is zero
Is maximum
Decreases from maximum to zero
Increases from zero to maximum
90°
118°
135°
150°
Increases continuously
Decreases continuously
Decreases, becomes stable and then increases.
Increases, becomes stable and then decreases.
2 to 3 times lower
2 to 3 times higher
5 to 8 times higher
8 to 20 times higher
GTAW
Open air cut voltage
Kerf
Gouging
Amount of material to be removed
Hardness of material being ground
Finish desired
All of these
Reduce built up edge
Break up chips
Improve machinability
All of these
Between the upper and lower critical temperature and cooled in still air.
Above the upper critical temperature and cooled in furnace.
Above the upper critical temperature and cooled in still air.
Between the upper and lower critical temperature and cooled in furnace.
Tungsten carbide
Brass or copper
Diamond
Stainless steel
On universal milling machine
On plain milling machine
In a tank containing an etching solution
Any one of these