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WorksheetsChapter 20 - Theory of Metal Machining
Total questions: 13
Worksheet time: 10mins
Which of the following manufacturing processes are classified as material removal processes (two best answers)
Casting
Machining
Extrusion
Grinding
Spinning
A lathe is used to perform which one of the following manufacturing operations
Broaching
Drilling
Lapping
Milling
Turning
With which one of the following geometric forms is the drilling operation most closely associated
External Cylinder
Flat Plane
Round Hole
Screw Threads
Sphere
If the cutting conditions in a turning operation are cutting speed = 300 ft/min, feed = 0.010 in/rev, and depth of cut = 0.100 inch, which one of the following is the material removal rate
0.025 in3/min
0.3 in3/min
3.0 in3/min
3.6 in3/min
A roughing operation generally involves which one of the following combinations of cutting conditions where v = cutting speed, f = feed, and d = depth
high v, f, and d
high v, low f and d
low v, high f and d
low v, f, and d
Which of the following are characteristics of the orthogonal cutting model (three best answers)
a multiple-cutting-edge tool is used
only two dimensions play an active role in the analysis
the cutting edge is parallel to the direction of cutting speed
the cutting edge is perpendicular to the direction of cutting speed
the two elements of tool geometry are rake and relief angle
The chip thickness ratio is which one of the following where tc = chip thickness after the cut, to = chip thickness before the cut, f = feed, d = depth, and w = width of cut
tc/to
to/tc
f/d
to/w
Which one of the four types of chip would be expected in a turning operation conducted at low cutting speed on a brittle work material
Continuous
Continuous with built-up edge
discontinuous
serrated
According to the Merchant equation, an increase in rake angle would have which of the following results, all other factors remaining the same (two best answers)
Decrease friction angle
decrease in power requirements
decrease in shear plane angle
increase in cutting temperature
increase in shear plane angle
In using the orthogonal cutting model to approximate a turning operation, the chip thickness before the cut to corresponds to which one of the following cutting conditions in turning
Depth of cut d
feed f
speed v
Which one of the following metals would usually have the lowest unit horsepower in a machining operation
Aluminum
Brass
Cast Iron
Steel
For which one of the following values of chip thickness before the cut to would you expect the specific energy in machining to be the greatest
0.010 inch
0.025 inch
0.12 mm
0.50 mm
Which of the following cutting conditions has the strongest effect on cutting temperature
feed
speed
