Test 4
rotary burrs
"Power filing" is frequently performed with ____ A. a filing machine B. band filing C. rotary burrs D. disk filing
Provides for machining of more complex parts than a manual milling machine
A CNC milling machine ___. A. Requires highly trained operators to operate. B. Is used only in mass production operations. C. Can machine parts slower and more accurately than a manual milling machine D. Provides for machining of more complex parts than a manual milling machine
accurate rotation of the work piece through any desired arc of rotation
A dividing head is an accessory used with a milling machine primarily to provide what operation? A. rotation of a part 90 degrees so that additional machining can be performed on it B. rotation of a part 180 degrees C. accurate rotation of the work piece through any desired arc of rotation D. rotation of a group of parts so that the next piece in the group can be machined
holds (x) size (y)
A fixture is a specical workholding device that [x] the workpiece during machining or assembly operations and establishes [y] dimensions.
False
A fixture/jig should be design using the least number of standard elements as possible. True or False
True
A fixture/jig should be designed to tolerate variations in the workpiece. True or False
location
A jig is a special workholding device that determines ____ dimensions that are produced by machining or assembly operations.
two
A requirement for broaching is that _____ teeth be in contact with the workpiece. A. two B. one C. three D. five
True
Abrasive waterjet machining involves an abrasive grit carried with ultra high pressure water jet to cut metals and non-metals. True or False?
dull (x) flattening (y)
Attrition refers to the material property regarding the wearing action of the abrasive, resulting in [x] edges and [y] of the abrasive grit. A. dislodging B. sharp C. dull D. flattening
False
Broaching is a process that can be used only in mass-production. True or False
internal keyways
Broaching was orginally developed for the production of ____. A. splines B. internal keyways C. flat surfaces D. external keyways
hard (m) glass(n) ceramics (o) carbides (p)
By using extremely [m] materials for abrasives, it is possible to machine hardened steel, [n], [o], and [p]. Choices: hard, soft, glass, ceramics, carbides, diamonds, wood, and plastics
True
Centerless grinding is a process that is performed quickly. True or False
False
Centerless grinding is a process that must be performed manually by the machinist. True or False
False
Centerless grinding requires lots of operator skill to operate the machine. True or False
False
Centerless grinding requires that small grinding wheels be used in the grinding process. True or False
True
Centerless grinding requires the use of special, dedicated equipment to perform the grinding process. True or False
centrifugal gravity inertial cutting
Clamping forces must be greater than what four (4) forces? A. aerodynamic B. centrifugal C. frictional D. gravity E. inertial F. cutting
vise chuck
Common base elements for fixtures are a [x] for milling and a [y] for lathe operations.
False
Creep feed grinding is a process preformed on a conventional horizontal spindle, reciprocating table surface grinder. True or False
True
Crush dressing is a process which is used to continuously or intermittently dress and/or true the grinding wheel while the grinding process occurs. True or False
N=(12V)/(pi*D) f_m(table feed rate) = f_tNn(number of teeth) MRR = Wtf_m(table feed rate)
Determine the MRR in in^3/min, given the following data: Face milling 1020 steel, 55" long, 7" wide (W) 8" diameter, ? teeth, 9 tungsten carbide inserts Depth of cut (t) = 0.29" Feed/tooth (f_t) = 0.011 in/tooth Cutting speed (V) = 754 ft/min (ignore length of approach [L_a] and length of over-travel [L_o])
False
Dressing a grinding wheel refers to the process where the abrasive grit edges are dulled and flattened. True or False
False
Electrochemical machining is deplating process using high DC voltage, high current for the process. True or False?
True
Electrochemical machining is used for machining hard, brittle materials (silicon nitride, quartz, ceramic composites). True or False?
vertical milling machine
End milling, drilling, and boring is typically performed using what type of knee-and-column milling machine? A. horizontal milling machine B. both vertical and horizontal milling machines C. vertical milling machine
the tooth pattern and the length of the file
For American pattern files, the coarseness of the file cut is given by: A. xx teeth/ inch B. the tooth pattern and the length of the file C. tooth pattern of the file D. the length of the file
False
For grinding wheels, glazing is the process to clean the grinding wheel and sharpen the abrasive particles. True or False
vertically down
For the DOWN milling process, complete the statements with the answers supplied: In slab milling operations, the direction of the cutting force is _______.
maximum
For the DOWN milling process, complete the statements with the answers supplied: The chip thickness is a _______ at the beginning of the chip formation.
with
For the DOWN milling process, complete the statements with the answers supplied: The mill cutter rotates _______ the direction of feed.
Up
For the UP milling process, complete the statements with the answers supplied: In the slab milling operations, the direction of the cutting force is ____. A. against B. toward the cutter C. toward the part D. maximum E. minimum F. with G. down H. up
maximum
For the UP 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. A. against B. toward the cutter C. toward the part D. maximum E. minimum F. with G. down H. up
minimum
For the UP milling process, complete the statements with the answers supplied: The chip thickness is a _____ at the beginning of the chip formation. A. against B. toward the cutter C. toward the part D. maximum E. minimum F. with G. down H. up
minimum
For the UP 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.
toward the part
For the UP milling process, complete the statements with the answers supplied: The direction of the cutting forces are ____. A. against B. toward the cutter C. toward the part D. maximum E. minimum F. with G. down H. up
against
For the UP milling process, complete the statements with the answers supplied: The mill cutter rotates ____ the direction of feed. A. against B. toward the cutter C. toward the part D. maximum E. minimum F. with G. down H. up
True
For the honing process the amount of material removed is less than 0.005" from the surface. True or False
fracture, producing new, sharp edges
Friability refers to the ability of the abrasive material to ____. A. form chips B. withstand high temperatures C. withstand exposure to water and cutting oils D. fracture, producing new, sharp edges
Two teeth less smoother (lower surface roughness value)
Helical teeth on a cutter allow ____ to contact the work surface at a time. This results in ____ chatter and shock and a ____ surface. A. one tooth B. multiple teeth C. more D. less E. rougher (higher surface roughness value) F. smoother (lower surface roughness value)
False
High ductile materials (i.e, aluminum) should be milled with the up milling process to prevent rapid dulling of the cutter teeth. True or False?
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) Deep slots with straight side walls A. form cutter B. twist drill C. T-slot cutter D. ball end mill E. end mill F. face mill G. fly cutter
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 flat-bottom groove in the surface of a part A. form cutter B. twist drill C. T-slot cutter D. ball end mill E. end mill F. face mill G. fly cutter
form cutter
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 A. form cutter B. twist drill C. T-slot cutter D. ball end mill E. end mill F. face mill G. fly cutter
face 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 A. form cutter B. twist drill C. T-slot cutter D. ball end mill E. end mill F. face mill G. fly cutter
ball 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 groove with a 1/8" diameter concave bottom A. form cutter B. twist drill C. T-slot cutter D. ball end mill E. end mill F. face mill G. fly cutter
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 A. form cutter B. twist drill C. T-slot cutter D. ball end mill E. end mill F. face mill G. fly cutter
form cutter
Identify the type of milling cutter that would be used for each of the following milling opeations in a horizontal milling machine. (Some answers may be used more than once.) 1/4" radius, convex shape along the edge of a part A. angle cutter B. form cutter C. slitting saw cutter D. staggered-tooth cutter E. plain cutter F. fly cutter G. side cutter
angle cutter
Identify the type of milling cutter that would be used for each of the following milling opeations in a horizontal milling machine. (Some answers may be used more than once.) 45 degree, V shaped groove in the surface of a flat bar A. angle cutter B. form cutter C. slitting saw cutter D. staggered-tooth cutter E. plain cutter F. fly cutter G. side cutter
staggered-tooth cutter
Identify the type of milling cutter that would be used for each of the following milling opeations in a horizontal milling machine. (Some answers may be used more than once.) Deep slots in a work piece A. angle cutter B. form cutter C. slitting saw cutter D. staggered-tooth cutter E. plain cutter F. fly cutter G. side cutter
form cutter
Identify the type of milling cutter that would be used for each of the following milling opeations in a horizontal milling machine. (Some answers may be used more than once.) Milling wood to produce wood trim A. angle cutter B. form cutter C. slitting saw cutter D. staggered-tooth cutter E. plain cutter F. fly cutter G. side cutter
slitting saw cutter
Identify the type of milling cutter that would be used for each of the following milling opeations in a horizontal milling machine. (Some answers may be used more than once.) deep, straight walled, narrow slots A. angle cutter B. form cutter C. slitting saw cutter D. staggered-tooth cutter E. plain cutter F. fly cutter G. side cutter
plain cutter
Identify the type of milling cutter that would be used for each of the following milling opeations in a horizontal milling machine. (Some answers may be used more than once.) finishing the top surface of a flat bar A. angle cutter B. form cutter C. slitting saw cutter D. staggered-tooth cutter E. plain cutter F. fly cutter G. side cutter
plastic
In ___ products, threads are frequently produced by casting.
False
In centerless grinding deep cuts are not possible due to the work support. True or False
rotating speed and axial feed of the work piece
In centerless grinding, the regulating wheel controls _____ in the grinding process. A. rotating speed of the grinding wheel B. axial feed of the workpiece C. rotating speed of the workpiece D. rotating speed and axial feed of the work piece
True
In centerless grinding, the work piece must be round and not include flats or keyways. True or False
Peripheral edge
In face milling, most of the cutting occurs at what area of the cutter? A. Equal amount of cutting both at the center and peripheral edge B. Peripheral edge C. center
bed milling machine
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? A. knee-and-column milling machine B. universal milling machine C. bed milling machine D. gantry milling machine
many (x) excellent (y)
In the abrasive machining process, [x] edges are cutting simultaneously resulting in a(n) [y] surface finish. A. Rough B. excellent (y) C. many (x) D. few E. two F.three
Parallel (x) horizontal (y)
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. A. perpendicular B. Parallel C. horizontal D. vertical
charged
Lapping is a surface finishing process where fine abrasive particles are _____ into a soft material. A. charged B. mounted C. lapped D. pasted
more than the machining operation
Loading and unloading of a fixture will often abuse the fixture ____ . A. less than the machining operation B. more than the machining operation C. equal to the machining operation
surface grinders
Magnetic chucks are commonly used on what type of machinery? A. Lathes B. Surface grinders C. Micro-drill presses D. Milling machines
vertical (z axis)
Match the axis movement with the knee-and-column milling component. The knee provides ____ movement on the column ways. A. rotation (B-axis) B. longitudinal (X-axis) C. transverse (Y-axis) D. vertical (Z-axis)
transverse (y axis)
Match the axis movement with the knee-and-column milling component. The saddle provides ___ movement on the knee ways A. rotation (B-axis) B. longitudinal (X-axis) C. transverse (Y-axis) D. vertical (Z-axis)
longitudinal (x axis)
Match the axis movement with the knee-and-column milling component. The table has ___ movement on the saddle ways. A. rotation (B-axis) B. longitudinal (X-axis) C. transverse (Y-axis) D. vertical (Z-axis)
Head
Match the part numbers on the schematic diagram with the names. Part 1
Table
Match the part numbers on the schematic diagram with the names. Part 2
Workpiece
Match the part numbers on the schematic diagram with the names. Part 3
Saddle
Match the part numbers on the schematic diagram with the names. Part 4
Knee
Match the part numbers on the schematic diagram with the names. Part 5
Base
Match the part numbers on the schematic diagram with the names. Part 6
Column Ways
Match the part numbers on the schematic diagram with the names. Part 7
Spindle
Match the part numbers on the schematic diagram with the names. Part 8
Column
Match the part numbers on the schematic diagram with the names. Part 9
negative 3-5
Milling cutters with carbide and ceramic cutting edges have a ____ rake angle and can be operated at ____ times faster than a HSS cutter. A. positive B. negative C. 10-15 D. 3-5
True
More flat surfaces are produced by the milling process than any other machining process. True or False
Removing material from a base using chemicals Removing material from a base using a tool vibrated at ultrasonic frequencies. Removing material using ultra high pressure water By an additive process where small, precise amounts of materials are built up into a shape
Non-traditional machining produces parts by which of the following (mark all that apply)? A. removing material from a base using chemicals B. Removing material from a base using a tool vibrated at ultrasonic frequencies. C. Removing material using ultra high pressure water. D. By an additive process where small, precise amounts of materials are built up into a shape E. Adding material to a base using high voltage electrical discharges.
straight helical
Plain cutters are used in slab milling operations and can have ___ or ___ teeth located around the circumference of the cutter. A. straight B. pointed C. spiral D. helical
horizontal milling machine
Slab milling is typically performed using what type of knee-and-column milling machine? A. horizontal milling machine B. vertical milling machine C. both horizontal and vertical milling machines
honing
Superfinishing is a variation of what process to finish flat surfaces. A. lapping B. None of these C. surface grinding D. honing
finish cutting on molds to produce a desired angle
Tapered end mills are used for ____ A. rough cutting in the machining of molds B. both rough and finished cutting in the machining of molds C. Finish cutting on molds to produce a desired angle D. machining a chamfer on finished parts
fool proofing
The ability to load a part into a fixture only one way is called? A. proofing B. fool proofing C. robotic design D. auto loading
plowing (x) rubbing (y) cutting (z)
The abrasive machining process is a mixture of three processes; [x] moves material, [y] causes friction and [z] forms chips. A. Cutting (z) B. digging C. plowing (x) D. rubbing (y) E. scrapping F. planning
True
The advantage of spiral flutes on a tap is that the chips are pulled out of the hole during the threading process. True or False?
.001"
The amount of material removed in lapping is usually less than _____ A. None of these B. 1 millionth of an inch C. 0.0005" D. 0.001"
radius
The blade width of the saw blade determines the minimum ____ that can be cut with a bandsaw blade A. depth of cut B. radius C. rate of cutting D. thickness
single-stroke (x) multi (y) a single pass (z)
The broaching process can be described as: A [x] process using a [y]-tooth cutter to remove material with roughing and finishing operations performed in [z] of the cutter. A. single-stroke B. multi-stroke C. single D. multi E. a single pass F. multiple passes
True
The chemical machining process is used in mass-production of parts True or False?
True
The creep feed grinding process is used to grind complex profiles in difficult-to-grind materials. True or False
True
The creep feed grinding process is used to grind deep slots with straight parallel sides into parts. True or False
False
The depth of cut in creep feed grinding is 1,000 to 10,000 times less than conventional grinding processes. True or False
True
The filing process is used to remove small amounts of material from a part. True or False
sewing machines
The first grinding machines were made by Brown and Sharpe in the 1860s for the grinding of parts for what device? A. revolvers B. sewing machines C. bicycle bearings D. steam engines
The strength of the bonds between the abrasive grits
The grade of a grinding wheel refers to ____. A. the ratio of bonding material volume to abrasive material volume B. the strength of the bonds between the abrasive grits C. the spacing of the abrasive particles in the wheel D. the ratio of bonding material weight to abrasive material weight
crosshatch
The honing process involves rotation and oscillatory motion to form what type of final surface finish lay pattern on the walls of the hole? A. no defined pattern B. circular C. crosshatch
Truing of holes
The honing process is not used for which of the following: A. truing of holes B. removing taper, waviness, and tool marks from the boring process C. sizing and finishing of bored holes D. removing tooling marks
False
The honing process used stones with a grit size of 1200 or more particles per inch. True or False
False
The lapping process must be performed only by hand without machinery. True or False
30 40
The maximum operator force in loading/unloading a part should be less than [x] to [y] lbf.
Simeon North
The milling machine was invented in approximately 1816 by ____. A. Thomas Edison B. Simeon North C. James Watt D. Eli Whitney
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. True of False
multi tooth cutting tool interrupted
The milling process uses [x] and involves [y] cutting. a) single-point tool b) multi-tooth cutter c) continuous d) interrupted
150
The milling process will produce a surface finish with a surface roughness measurement of 60 to ____ microinches.
vertical
The most common type of broaching machine construction is ____. A. vertical B. Horizontal
bandsaw
The most common type of sawing machine for cutting metal is : A. cold saw B. power hacksaw C. bandsaw D. milling machine
True
The operator should not have to reach past the tool to load/unload parts for machining. True or False
set
The pattern used to offset the saw blade teeth from the centerline of the blade is called ____. A. pitch B. rake C. set
three perpendicular planes
The principle of 3-2-1 uses location points to define ___. A. three (3) intersecting planes B. 6 points C. 3 axis, 2 rotations, 1 point D. three (3) perpendicular planes
Thread milling
The process for machining threads which requires a CNC machining center capable of circular interpolation is ____.
.003 .006
The range of rise per tooth for external broaching is (x) to (y) inches/tooth.
.001 .0025
The range of rise per tooth for internal broaching is (x) to (y) inches/tooth. A. 0.0015 B. 0.001 C. 0.0005 D. 0.003 E. 0.0025 F. 0.005
kerf
The slot cut int eh material by a saw blade is called ____. A. slot B. groove C. kerf D. gullet
lap
The soft material used in the lapping process is called _______. A. felt B. rouge C. lap D. None of these
the spacing of the abrasive grit in the wheel
The structure of a grinding wheel refers to ____. A. the strength of the bonds between the abrasive grit in the wheel B. The ratio of the bonding material volume to the abrasive material volume C. The ration of the bonding material weight to the abrasive material weight D. the spacing of the abrasive grit in the wheel
32 (x) 125 (y)
The surface finish obtained from the broaching process has a surface finish measurement of (x) to (y) microinches
circumference and the face of the cutter
The teeth of an end mill cutter are located on the ___. A. circumference and the face of the cutter B. circumference of the cutter C. face of the cutter
True
The truing of a grinding wheel is a process preformed to restore the desired shape to the wheel. True or False
taper plug bottom
To thread a blind hold the three types of taps used, in order are ___, ___, and ___. A. plug B. spiral C. fluteless D. taper E. bottom
72
Vertical broaching machines are usually limited to strokes of ____ inches due to height and load considerations. A. 100 B. 72 C. 48 D. 60
False
Waterjet machining is used to cut metal parts using ultra-high pressure water as the cutting agent. True or False?
die
What device is used to manually produce external threads? A .file B. taps C. Die D. grinding wheel
self opening die head
What device is used to produce external threads with lathes, screw machines, and threading machines? A. self closing die head B. self opening die head C. die attachment D. threader
straddle milling
What is the milling of two parallel surfaces with side cutters called? A. saddle milling B. twin milling C. parallel milling D. straddle milling
aluminum oxide
What is the most common material used for abrasives? A. plastic media B. silicon carbide C. diamond D. aluminum oxide E. dry ice F. CBN
T slot milling cutter
What is the type of mill cutter used to machine the slots for bolt heads in base plates, bed plates, and work tables ? A. L-Slot milling cutter B. T-slot milling cutter C. Staggered-tooth mill cutter D. Plain milling cutter
.1 in^3/min/1000 amps
What is the typical MRR for electrochemical machining? A. in^3/ min/ 1000 amps B. .1 in^3/min/1000 amps C. 100 in^3/min/1000 amps
taps
What is used to produce internal threads?
80-90
What percentage of EDM is used to produce tool and die sets? A.10-20% B. 80-90% C. 70-80% D. 50-60%
cylindrical external
What type of grinding machining would be used for the grinding of camshafts and crankshafts? Hint: See table 27-4. A. cylindrical external B. surface grinder C. None of these D. cylindrical internal
woodruff keyseat milling cutter
What type of milling cutter is used to mill a semi-circular keyway in a shaft used in power transmission equipment? A. end mill cutter B. T-slot milling cutter C. woodruff keyseat milling cutter D. Slitting saw cutter
bonded
Which is the most frequently used mounting system for abrasives? A. free B. bonded C. mounted D. coated
Plasma arc cutting involves superheated gas at 30,000 to 60,000 F for cutting conductive metals.
Which of the following applies to plasma arc cutting? A. Plasma arc cutting involves superheated gas for cutting only steel plates B. Plasma cutting involves super high pressure gas propelled at mach 30 for cutting conductive metals. C. Plasma arc cutting involves superheated gas at 30,000 to 60,000 F for cutting conductive metals.
A process involving a rotating tool and X Y Z linear movement of the work piece
Which of the following best describes the tool and workpiece movement for the milling process? A. A process involving a rotating work piece and rotating tooling B. A process involving a rotating tool and X-Y-Z linear movement of the work piece. C. A process involving a rotating work piece and X-Y-Z linear movement of the tooling D. A process involving a total fixed work piece and a rotating tooling that moves X-Y-Z with linear movements.
A harden steel tool is vibrated at high frequencies (>20,000 Hz) with an small amplitude (~0.003") with an abrasive slurry pumped between the material being machined and the tool as a process to remove material.
Which of the following describes the ultrasonic machining process? A. A harden steel tool is vibrated at high frequencies (>20,000 Hz) with an small amplitude (~0.003") with an abrasive slurry pumped between the materail being machined and the tool as a process to remove material. B. A harden steel tool is vibrated at high frequencies (>20,000 Hz) and large amplitudes (>0.10") with an abrasive slurry pumped between the material being machined and the tool as a process to remove material. C. A harden steel tool is vibrated at low frequencies (<1000 Hz) and large amplitudes (>0.10') with an abrasive slurry pumped between the material being machined and the tool as a process to remove material. D. A harden steel tool is vibrated at low frequencies (<1000) with an small amplitude (~ 0.003") with an abrasive slurry pumped between the material being machined and the tool as a process to remove material.
mounted
Which of the following is NOT a type of mounting method that is used with the abrasive machining process? A. bonded B. coated C. free D. mounted
Rapid prototyping is an additive manufacturing process that can produce parts from various materials using various processes.
Which of the following is a correct statement for rapid prototyping? A. Rapid prototyping is an additive manufacturing process that can be produce parts fro various materials using various processes. B. Rapid prototyping is very expensive process and has very limited applications C. Rapid prototyping is a new additive manufacturing process that has been developed in the last 5 years.
flushing agent
Which of the following is a function of the dielectric in the electical discharge machining process? A. Flushing agent B. heating agent C. lubricant D. protective coating for the finished part
CBN
Which of the following is not a common material used for the teeth of a band saw blade? A. tungsten carbide B. diamond C. high speed steel D. CBN
square
Which of the following is not a common tooth for saw blades? A. square B. regular C. skip
insert tooth
Which of the following is not a type of broach construction? A. segment B. shell C. insert tooth D. solid
aluminum chips
Which of the following is not an abrasive material used in commercial cleaning applications? A. walnut shells B. dry ice C. aluminum chips D. plastic media
can be used for cutting metal based composite materials
Which of the following is not an advantage of plasma arc cutting? A. small heat-affected zone B. Can be used for cutting metal based composite materials C. very fast cutting D. smooth cuts free of contaminants are produced
cutting thick materials
Which of the following is not an application for laser beam machining? A. welding B. cutting thin materials C. Drilling micro-sized holes D. cutting thick materials
Horizontal spindle, reciprocating table
Which of the following is the most common type of surface grinding machine? A. Horizontal spindle, reciprocating table B. Horizontal spindle, rotary table C. Vertical spindle, reciprocating table D. Vertical spindle, rotary table
aluminum
Which of the following materials is not commonly used as a lap? A. Aluminum B. Copper C. Cloth D. Cast iron
air
Which of the following materials is not used a a carrier to charge the lap with abrasive particles? A. grease B. oil C. water D. air
The mask is applied to the area of the part that is desired to not remove material from the part
Which of the following statements correctly describes the purpose of the mask in chemical machining? A. The mask is applied to the area of the part that is desired to not remove material from the part B. The mask is applied to the area of the part that it is desired to removal material from the part. C. The mask enhances the chemical machining process. D. None of the above.
A very specialized process for machining developed for machining parts for NASA rocket engine parts.
Which of the following statements for electical discharge machining is incorrect? A. A matt finished is produced by the EDM process B. A very specialzied process for machining developed for machining parts for NASA rocket engine parts. C. Metal is removed from the part by melting tiny particles using electrical sparks between the tool and work piece. D. Most frequently used of NTM processes.
one or more axes are always accelerating in a 3D cut
Which of the following statements is FALSE for high speed machining/milling? A. Low cutting forces are produced B. Acceleration rate is greater than 2 m/sec2. C. Cutting speed for steel is less than 1500 m/min D. One or more axes are always accelerating in a 3-D cut. E. A high material removal rate is obtained
the threads produced by thread rolling have a lower strength than cut threads
Which of the following statements is FALSE for rolled threads? A. Rolled threads have a hard, wear resistance, smooth surface. B. the threads produced by thread rolling have a lower strength than cut threads. C. Rolled threads have a major diameter larger than the diameter of the base stock.
Thread rolling is a hot forming process
Which of the following statements is FALSE regarding the thread rolling process? A. Thread rolling is a hot forming process B. Thread rolling can be used to form threads on tubular products C. Thread rolling is used to produce bolts in large quantities at a rate of 1 per second.
only coarse threads can be produced
Which of the following statements is FALSE regarding thread grinding? A. only coarse threads can be produced B. threads in hardened steels can be produced C. using a centerless grinding process, 1/2" long set screws can be produced at 1 piece/sec. D. very accurate, fine pitched threads can be produced
the clamping forces should be spread over a small area
Which of the following statements is false for clamping forces? A. The clamping forces should force the workpiece against the fixed points of location and work support. B. The cutting forces should act toward the fixed part of a fixture. C. The clamping forces should be spread over a small area.
Vertical spindle, reciprocating table
Which of the following surface grinder requires the wheel diameter to exceed the width of the part being abrasively machined? A. Horizontal spindle, reciprocating table B. Horizontal spindle, rotary table C. Vertical spindle, reciprocating table D. Vertical spindle, rotary table
horizontal spindle, rotary table
Which of the following surface grinder types is typically NOT used due to limited type of work which it will accommodate? A. Horizontal spindle, reciprocating table B. Horizontal spindle, rotary table C. Vertical spindle, reciprocating table D. Vertical spindle, rotary table
vertical spindle, rotary table
Which of the following surface grinding machines is frequently used in production operations? A. Horizontal spindle, reciprocating table B. Horizontal spindle, rotary table C. Vertical spindle, reciprocating table D. Vertical spindle, rotary table
Vertical spindle, rotary table
Which surface grinder can be equipped with multiple grinding heads and automatic loading and unloading of the parts? A. Horizontal spindle, reciprocating table B. Horizontal spindle, rotary table C. Vertical spindle, reciprocating table D. Vertical spindle, rotary table
False
With centerless grinding tubes will automatically have concentric inside and outside diameters. True or False
True
With centerless grinding, no distortion of the part occurs dues to grinding forces. Therefore, it is possible to obtain very accurate finished part dimensions. True or False
True
Without proper chip disposal from a jig/fixture, chips can cause the workpiece to not seat properly. True or False
False
Without proper chip disposal from a jig/fixture, tool life will be increased due to increased heating of the tool. True or False
electrostatic chuck
You need to hold several small non-magnetic, thin stainless steel parts for machining. Which if the following would be a good choice? A. electrostatic chuck B. vise C. toggle clamps D. magnetic chuck
