In a shaper, the metal is removed during
Forward stroke
Return stroke
Both the forward and return strokes
Neither the forward nor the return stroke
Correct Answer :
A. Forward stroke
Related Questions
The lip angle of a single point tool is usually
20° to 40°
40° to 60°
60° to 80°
None of these
The drill spindles are provided with standard taper known as
Morse taper
Seller's taper
Chapman taper
Brown and Sharpe taper
The guideways are of
Flat type
V-type
Dovetail type
Any one of these
The operation of making a cone-shaped enlargement of the end of a hole is known as
Counter-sinking
Counter-boring
Trepanning
Spot facing
An operation of embossing a diamond shaped pattern on the surface of a workpiece, is known as
Counter-boring
Grooving
Knurling
Facing
The tail stock set over method of taper turning is preferred for
Internal tapers
Small tapers
Long slender tapers
Steep tapers
The binding material used in cemented carbide tools is
Tungsten
Chromium
Silicon
Cobalt
The tool material, for faster machining, should have
Wear resistance
Red hardness
Toughness
All of these
When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and work, the process is known as
Electrochemical machining
Electro-discharge machining
Ultrasonic machining
None of these
Relief angles on high speed steel tools usually vary from
0° to 3°
3° to 10°
10° to 20°
20° to 30°
A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.
Soft grade
Medium grade
Hard grade
None of these
The method of grinding used to produce internal cylindrical holes and tapers, is
Internal cylindrical grinding
Form grinding
External cylindrical grinding
Surface grinding
Larger than 15° side cutting edge angle
Increases tool life
Decreases tool life
Produces chipping and decreases tool life
Results in excessive stress concentration and greater heat generation
In drilling Bakelite and fibrous plastics, the point angle of a drill is
90°
118°
135°
150°
Flank wear occurs mainly on the
Nose part, front relief face and side relief face of the cutting tool
Face of the cutting tool at a short distance from the cutting edge
Cutting edge only
Front face only
In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to
Circular interpolation in counter clockwise direction and incremental dimension
Circular interpolation in counter clockwise direction and absolute dimension
Circular interpolation in clockwise direction and incremental dimension
Circular interpolation in clockwise direction and absolute dimension
The velocity of tool along the tool face is known as
Shear velocity
Chip velocity
Cutting velocity
Mean velocity
In a gating system, the ratio 1: 2: 4 represents
Sprue base area: runner area: ingate area
Pouring basin area: ingate area: runner area
Sprue base area: ingate area: casting area
Runner area: ingate area: casting area
The cutting speed for counter-boring should be _________ that of drilling operation.
Equal to
Less than
Greater than
None of these
The material which on machining produces chips with built up edge is
Brittle material
Tough material
Hard material
Ductile material
Which of the following statement is correct for orthogonal cutting system?
The cutting edge of the tool is perpendicular to the direction of tool travel.
The cutting edge clears the width of the workpiece on either ends.
The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
All of the above
Allowance in limits and fits refers to
Maximum clearance between shaft and hole
Minimum clearance between shaft and hole
Difference between maximum and minimum sizes of hole
Difference between maximum and minimum sizes of shaft
Glazing in grinding wheels __________ cutting capacity.
Has no effect on
Increase
Decrease
None of these
A jig is defined as a device which
Holds and locates a workpiece and guides and controls one or more cutting tools
Holds and locates a workpiece during an inspection or for a manufacturing operation
Is used to check the accuracy of workpiece
All of the above
The angle made by the face of the tool and the plane parallel to the base of cutting tool is called
Rake angle
Cutting angle
Clearance angle
Lip angle
The process of removing metal by a cutter which is rotated against the direction of travel of workpiece, is called
Up milling
Down milling
Face milling
End milling
The specific cutting energy used for establishing the machinability of the metal depends upon its
Coefficient of friction
Microstructure
Work hardening characteristics
All of these
A feed gear box for a screw cutting lathe is designed on the basis of
Geometric progression
Arithmetic progression
Harmonic progression
None of these
In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth is called
Face
Fillet
Gash
Land
In centreless grinding, the surface speed of regulating wheel is
5 to 15 m/min
15 to 60 m/min
60 to 90 m/min
90 to 120 m/min