Mech Test 4
Tapered end mills are used for ____
Finish cutting on molds to produce a desired angle
The numeric control programming language used for computer-aided manufacturing (CAM) is called
G-code
Which of the following statements is false regarding the thread rolling process?
Thread rolling is a hot forming process.
Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) producing a groove with a 1/8" diameter concave bottom
ball end mill
In mass-production opeations, a milling machine with the capability of making heavy cuts, having 1,2, or 3 spindles, and no vertical table movement is often used. This describes what type of milling machine?
bed milling machine
The process for machining threads which requires a CNC machining center capable of circular interpolation is ___.
thread milling
The creep feed grinding process is used to grind deep slots with straight parallel sides into parts.
true
The filing process is used to remove small amounts of material from a part.
true
The use of a spiral fluted tap is to force chips up (rearward) and out of a hole during the threading process.
true
The honing process is not used for which of the following:
truing of holes
Match the axis movement with the knee-and-column milling component. The knee provides ____ movement on the column ways.
vertical (z-axis)
End milling, drilling, and boring is typically performed using what type of knee-and-column milling machine?
vertical milling machine
Which of the following is the most common type of surface grinder machine?
Horizontal spindle, reciprocating table
What is the type of mill cutter used to machine the slots for bolt heads in base plates, bed plates, and work tables ?
T-slot milling cutter
A dividing head is an accessory used with a milling machine primarily to provide what operation?
accurate rotation of the work piece through any desired arc of rotation
Which is the most frequently used delivery system for abrasives?
bonded
The teeth of an end mill cutter are located on the ___.
circumference and the face of the cutter
What type of grinding machining would be used for the grinding of camshafts and crankshafts?
cylindrical external
Attrition refers to the material property regarding the wearing action of the abrasive, resulting in _____ edges and _____ of the abrasive grit.
dull, flattening
Lapping is a surface finishing process using fine abrasive particles ____ into a soft material.
embedded
Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) Deep slots with straight side walls
end mill
Centerless grinding is a process that must be performed manually by the machinist.
false
Centerless grinding requires a high degree of skill to operate the machine.
false
Centerless grinding requires that small grinding wheels be used in the grinding process.
false
For grinding wheels, glazing is the process to clean the grinding wheel and sharpen the abrasive particles.
false
Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) bearing pocket in gearbox housing
form cutter
Friability refers to the ability of the abrasive material to ____.
fracture, producing new, sharp edges
Which of the following is NOT a type of broach construction?
insert tooth
Match the axis movement with the knee-and-column milling component. The table has ___ movement on the saddle ways.
longitudinal (x-axis)
In the abrasive machining process, _____ edges are cutting simultaneously resulting in a(n) _____ surface finish.
many, excellent
For the down milling process, complete the statements with the answers supplied The chip thickness is a ___ at the beginning of the chip formation.
maximum
The milling process uses _____ and involves ______ cutting.
multi-tooth cutter, interrupted
In the slab milling process, the finished surface is _____ to the axis of rotation of the cutter and is normally performed on a ____ spindle milling machine.
parallel, horizontal
Which of the following free-abrasive machining processes is safe in the event of accidental skin contact?
ultrasonic
For the down milling process, complete the statements with the answers supplied In slab milling operations, the direction of the cutting force is ____.
vertically down
Which type of surface grinding machine is often made to automatically load/unload parts?
Vertical spindle, rotary table
What is the most common material used for abrasives?
aluminum oxide
Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) Producing a flat-bottom groove in the surface of a part
end mill
Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) producing a pocket in a workpiece
end mill
Identify the best type of cutter that would be used for each of the following milling operations in a vertical milling machine. (some answers maybe used more than once) finishing the top surface of a work piece
face mill
For the down milling process, complete the statements with the answers supplied The chip thickness is a ___ at the end of the chip formation as the tool exits the work piece.
minumum
Threads are frequently produced in _____ products by casting or molding where excellent surface finish can be realized.
plastic
The blade width of the saw blade determines the minimum ___ that can be cut with a bandsaw blade.
radius
The structure of a grinding wheel refers to ___.
the spacing of the abrasive grit in the wheel
The grade of a grinding wheel refers to ____.
the strength of the bonds between the abrasive grits
Match the axis movement with the knee-and-column milling component. The saddle provides ___ movement on the knee ways
transverse (y-axis)
In centerless grinding, the work piece must be round and not include flats or keyways.
true
More flat surfaces are produced by the milling process than any orher machining process.
true
The conversational controller does not require programming the machine.
true
What is the milling of two parallel surfaces with side cutters called ?
straddle milling
The range of rise per tooth for surface broaching is
0.003 to 0.006
The milling process will produce a surface finish with a surface roughness measurement of 60 to ___ microinches.
150
The milling machine was invented in approximately 1816 by ___.
Simeon North
The depth of cut in creep feed grinding is 1,000 to 10,000 times less than conventional grinding processes.
false
The milling process is characterized by low MRR, good to excellent finished surface (low surface roughness), and is used in mass-production, tool and die work, and prototype work.
false
Milling cutters with carbide and ceramic cutting edges have a ____ rake angle and can be operated at ____ times faster than a HSS cutter.
negative, 3 to 5
For the down milling process, complete the statements with the answers supplied The mill cutter rotates ____ the direction of feed.
with
What type of milling cutter is used to mill a semi-circular keyway in a shaft used in power transmission equipment?
woodruff keyseat milling cutter
