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100 Cards in this Set
- Front
- Back
High-speed steels with the "T" designation have a PRINCIPAL alloy element of |
b. tungsten |
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When a machining operation subjects the cutter to the shock of an interrupted cut, you do NOT select a cutter made of |
a. cemented carbide |
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The process of sintering is BEST described as |
b. holding a material under pressure just below the melting temperature until it fuses |
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A cutting tool that has a coating, which is not a surface covering but actually a part of the tool, BEST describes |
b. cubic boron nitrides |
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Polycrystalline diamond cutting tools are NOT effective on cobalt or nickel because |
c. they chemically react with the cutter and cause rapid wear |
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For GENERAL turning operation, you should grind a relief angle of |
b. 10 degrees |
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The lathe tool bit relief angle affected by a 14 1/2 degree tool holder angle is the |
a. end |
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To prevent formation of long shavings during turning operations, positive-negative rake inserts have |
a. a chip breaker |
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If you take TOO LIGHT a feed on a workpiece, you can |
b. work-harden the workpiece |
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The type of grinding wheel you should use for ROUGH GRINDING carbides is |
b. 80-grit, SiC |
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Because of its strength, the BEST type of advanced ceramic cutting tools is |
b. silicon nitride |
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The advanced ceramic that is EXTENSIVELY used in electrical applications is |
c. aluminum oxide |
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The SIZE of a lathe is designated by the maximum diameter of the workpiece swung over the ways, distance between centers, and |
c. overall length of the bed |
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The item that permits you to remove backlash between the compound rest and cross slide is the |
a. gib |
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You use the carriage clamp screw ONLY to lock the carriage in position when you are |
b. facing |
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The lathe chuck you DON'T use to hold parts with rough surfaces is the |
d. draw bar collet |
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When truing a faceplate for machining, your LAST option should be |
b. taking a light facing cut |
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What item can you mount on a faceplate to hold a workpiece that has a VERTICAL surface? |
b. Angle plate |
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A characteristic that faceplates and driveplates do NOT share is the |
d. provision for mounting work on the face |
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The factor NOT used in determining the size of a center hole is the |
a. length of cut |
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The SMALL end diameter of a 3/4" solid mandrel is |
b. 0.7495" |
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If you must manufacture 250 washers of the same outside diameter, it's BEST to use |
b. a gang mandrel |
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To machine a 1" diameter carbon steel rod with a selected cutting foot speed (cfs) of 80, you determine the lathe spindle revolutions per minute (rpm) with the formula RPM = CFS X 4 / D, which results in an rpm of |
c. 320 rpm |
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The RECOMMENDED feed rate for roughing and finishing on a lathe is |
c. 0.025" to 0.035" and 0.002" to 0.005", respectively |
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The TRUE statement regarding feed rates when machining long workpieces with small outside diameters is feed rates must be reduced |
a. because the long workpieces tend to spring |
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In GENERAL, the depth of cut when taking roughing cuts on workpieces over 3/4" should be |
d. 0.250" |
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For taking a finishing cut during straight turning operations, you should take a shallow cut for about 1/4" |
b. to see if the diameter is correct |
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To face a workpiece properly, the MAXIMUM length the workpiece should extend out of the lathe chuck is |
a. 1 1/2 times the workpiece diameter |
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When you machine an undercut in a workpiece, ensure the cutting tool has |
a. no side rake so you can cut in either direction |
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The process of feeding a parting tool into the workpiece, and then moving it slightly to once side for clearance is known as |
b. step parting |
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If you are parting to length 0.375" spacers with a 0.187" parting tool, you adjust the carriage for each cut |
c. 0.562" |
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The method of cutting radii on the lathe that requires SIMULTANEOUS COORDINATED movement of the carriage and cross slide is |
c. hand manipulation |
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The method of cutting radii on the lathe that requires a full-scale layout of the form of the work on a piece of thin sheet metal is |
d. template and pointer |
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The taper of American Standard taper pins is |
b. 0.2500 ipf |
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The TPF for the American Standard steep machine taper is |
c. 3 1/2 TPF |
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If after checking a taper you are machining with the compound rest on a lathe, you find the taper-per-inch is not correct even though you have determined the compound rest angle is accurately set, the PROBABLE cause is the tool bit is NOT |
a. set at center height |
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When you file work rotating in a lathe, you point the tip of the file at a 10 degree angle toward the tailstock end of the lathe, and hold the handle with your |
b. left hand and the file tip with your right |
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If you're using the offset tailstock method of machining a taper and you have the included angle and length of work given, you determine the actual angle to machine by |
a. dividing the included angle by 2 |
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One DISADVANTAGE of using the tailstock offset method of machining tapers is |
d. you can only machine external tapers |
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To take depths of cut when using the taper attachment, use the |
b. compound rest |
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If the shank of a taper-shank drill is TOO SMALL to fit into the tailstock spindle, use a |
c. socket reducer |
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You can keep drill from turning when you float it on the tailstock center by |
d. mounting it in a lathe dog and resting it on the compound rest |
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To produce a very accurate hand-reamed hole, you |
a. drill approximately 1/32" undersize, bore within 0.005", and hand ream |
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The revolutions per minute you should use for machine REAMING is |
b. one-half the drilling speed. |
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The position of the boring tool in relation to the work for boring is |
a. 5 degrees above center for straight and on-center for taper boring |
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In the thread designation 1/4-20 UNC-3B, the "3B" represents a |
a. close tolerance internal thread |
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Unless otherwise specified, ALL International Organization for Standardization metric threads are considered |
d. right-hand |
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The "g" in the metric thread designation "M10 x 1.5 - 8" means |
c. external |
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Thread micrometers are designed to give a direct reading of the thread |
a. pitch diameter |
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The back-rake angle you should grind on a threading tool is |
a. 0 degrees |
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The amount of side relief angle ground on a threading tool depends upon the |
b. helix angle of the thread |
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During a threading operation, take successive cuts by using the |
d. compound rest |
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You can produce a mirror-like finish on a workpiece while single-pointing if you take |
d. light cuts of 0.0005" |
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Before you cut internal threads on a workpiece, you must bore the hole to the |
b. minor diameter of the thread |
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The MAIN difference between cutting right-hand and left-hand threads is, when you cut |
c. left-hand threads, you swivel the compound rest to the left for external threads |
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The method of cutting multiple lead threads on the lathe that works BEST for cutting Acme and square threads is |
d. positioning the compound rest parallel to the ways |
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The taper per foot setting on a taper attachment when machining pipe threads is |
c. 3/4" |
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The NOMINAL size of an external taper pipe thread is the |
b. approximate inside diameter of the pipe |
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The included angle of an ACME thread is |
a. 29 degrees |
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To cut a metric thread on a standard lathe, one of the replacement gears must have |
a. 127 teeth |
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The spindle speed you should use when power tapping a hold with a lathe is |
a. 10 to 30 rpm |
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The setting for the finish cut when you thread with a geometric die is the |
b. actual screw pitch |
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If the diametral pitch and work blank diameter are NOT in relation each other, the knurl |
c. tool does not track properly |
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When dressing a grinding wheel on the toolpost grinder, the FINAL depth of cut should be |
a. 0.0005" |
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The tool you use in conjunction with a center rest to support hexagonal or square stock is a |
d. cathead |
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By using the micrometer carriage stop, you can position the carriage to a tolerance within |
c. 0.0010" |
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The feature of the quick-change toolpost that provides a positive hold and accurate setting for multiple tool holders is |
a. dovetailed surfaces |
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When a lathe must be lifted during installation , it is BEST to lift it with |
d. heavy straps |
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When leveling a lathe during installation, you should use a |
c. precision level |
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On a lathe, the gibs on the compound rest should be adjusted |
b. snug, but not tight, on the compound rest. |
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The size of a milling machine is determined by the |
c. longitudinal table travel in inches |
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The knee on a milling machine attaches to the column by |
c. dovetail ways |
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BEFORE you tighten or loosen the arbor nut on a horizontal milling machine, you should |
a. install the arbor support |
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When you install a milling machine, level it by placing a precision level |
c. longitudinally and laterally on the table |
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The taper on MOST STANDARD milling machine arbors is |
d. 3 1/2 ipf |
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The feature of a plain milling cutter that eliminates shock and permits a free cutting action |
d. helical teeth |
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The type of milling cutter you would select to cut off work or mill narrow slot is the |
c. metal slitting saw |
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While rotating, end mills with a right-hand cut are designed to cut |
b. counterclockwise only |
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What's the diameter and width of a #404 Woodruff keyseat cutter? |
b 1/8" wide and 1/2" diameter |
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If you have a spindle speed of 80 rpm, a chip thickness of 0.004", and a cutter with 12 teeth, what is the correct feed rate determined by using the formula F = T x nt x rpm? |
a. 3.8 ipm |
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The process of milling a flat surface PERPENDICULAR to the cutter axis is an example of |
a. face milling |
|
VOID |
VOID |
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The MOST LIKELY cause of a parallelogram slot when milling is |
a. tool deflection in the slot |
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When you mill flutes on a reamer, cut the teeth with |
b. 2 degrees variation in spacing |
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To mill a square ended keyway in a shaft, you should use a |
b. plain milling cutter |
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You align the index head with the longitudinal axis of the milling machine table by using |
b. keys on the base plate |
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The MAIN purpose of the sector arms on an index head is to |
d. count the number of holes needed to index |
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The type of indexing attachment is quick and easy to setup, and is adjusted by the use of a clutch lever is the |
c. super spacer |
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On the rotary table surface grinder, you get the depth of cut by feeding the |
d. work up into the wheel |
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For FINISH grinding, the depth of cut should NOT exceed |
d. 0.0005" |
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BEFORE you shut off the machine, you should let the wheel run and |
d. turn off the coolant |
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Discoloration or burning of a part is MOST LIKELY caused by |
d. insufficient coolant |
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When starting a surface grinder, you should jog start the spindle to |
a. allow the wheel to come up to speed slowly |
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On a tool and cutter grinder, when the crossfeed handwheel is rotated 2 1/2 full revolutions, the amount of travel is |
c. 0.250" |
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If you're setting up to cylindrically grind a reamer, position it so the grinding wheel strikes the reamer |
c. cutting edge heel first |
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The tool and cutter grinding wheel that can grind the face and shoulder of a workpiece at the SAME TIME is the |
d. angular wheel |
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The only point a computer numerical control machine knows WITHOUT programmer intervention is the |
b. reference point |
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The G-code that indicates a tool change is |
a. T |
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To eliminate the portions of the radius not needed when constructing a computer numerical control program, use the |
d. trim feature |
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The purpose of post processing a completed computer-aided design/computer-aided manufacturing file is it |
a. converts the program into G-code |