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volume 3
  • Zion W

  • 問題数 100 • 4/28/2024

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    問題一覧

  • 1

    an example of a primary use for high carbon steel is

    a file

  • 2

    high carbon steels lose their hardness above a machining speed of

    50 fpm

  • 3

    when cooled to room temperature high speed steel retains Rockwell hardness value of

    63 to 65

  • 4

    straight carbide, cutting tools should not be used to machine plain carbon steel because they

    Crater and fail quickly

  • 5

    polycrystalline diamond cutting tools are not effective on cobalt or nickel because

    They chemically react with the cutter and cause rapid wear

  • 6

    during ordinary, turning operations with a lathe tool, the edge that does most of the cutting is the

    side cutting edge

  • 7

    Delay tool bit relief angle affected by a 14 1/2° tool holder angle is the

    end

  • 8

    if you take too light a feed on a workpiece

    work harden the work peice

  • 9

    The type of grinding wheel you should use for rough, grinding carbides is

    80 grit silicon carbide

  • 10

    which is not a common nano oxide matrice

    aluminosiliate

  • 11

    because of his strength, the best type of advance, ceramic cutting tool for mechanical, and where applications is

    silicon nitride

  • 12

    The advance ceramic that retains its straight at temperatures as high as 1400°C is

    Silicon carbide

  • 13

    The advanced ceramic that is extensively used in electrical applications is

    aluminum oxide

  • 14

    The size of a lid is designated by the maximum diameter of the workplace swung over the way distance between centers and

    Overall length of the bed

  • 15

    The item that permits used to remove the backlash between the compound rest, and the cross slide is the

    Gib

  • 16

    you can use the carriage clamp screw only to lock the carriage in position when you are

    Facing

  • 17

    The lever on the lathe apron you must engage to cut threads with a lathe is the

    Split nut

  • 18

    on a leave, adjust the Gibbs on the compound rest

    snuggly, but not tight on the compound rest

  • 19

    The lathe Chuck that has the greatest holding power is the

    Four jaw independent

  • 20

    The lathe chug that can hold duplicate pieces of irregular shape is the

    Four jaw combination

  • 21

    when truing a faceplate for machining, your last option should be

    Taking a light facing cut

  • 22

    when you take a light cut to true the face of a face plate, you should make only one or two

    shallow cuts 0.001 to 0.003

  • 23

    What item can you mount on a face plate to hold a work piece that is vertical surface

    Angle plate

  • 24

    A characteristic that face place and dry place do not share is the

    provision, for mounting work on the face

  • 25

    The lathe center use only with facing work, held between centers is the

    half

  • 26

    The lathe center you used to support hollow work is the

    pipe

  • 27

    The amount of eccentricity for an eccentric mandrel is determined by the

    Distance between the offset and center holes

  • 28

    The Mandot type you should use to machine surfaces, concentric to threaded holes is the

    nut

  • 29

    The machine, a one diameter carbon steel rod with a selected cutting foot speed of 80 U determine the lace spindle revolutions per minute with the formula RPM equals CFS times four, divided by D which results in an RPM of

    320 RPM

  • 30

    when machining, long work pieces with small outside damage to feed rates must be reduced

    Because long work pieces tend to spring away

  • 31

    The amount of material that should be left on the outside diameter for finishing is

    0.010 to 0.020

  • 32

    The least accurate method of facing to length is

    Facing to split the layout line

  • 33

    The purpose of filleted shoulders is to

    Strengthen parts

  • 34

    You can break a square corner by

    Using a file to remove the burr

  • 35

    A process of feeding a parting tool into the work piece and then moving it slightly to one side for clearance is

    Step parting

  • 36

    The method of cutting radii on the lathe that requires simultaneous coordinated movement of the carriage and cross slide is

    Hand manipulation

  • 37

    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

    Template and pointer

  • 38

    to cut a convex radius while using the compound rest you

    position the cutting tool behind the compound rest pivot point

  • 39

    Compared to speed for rough turning leg spindle speed for filing metal is

    4to5 times faster

  • 40

    With the offset tail stock method of cutting tapers, as the length of the work increases the

    Amount of taper decreases

  • 41

    One disadvantage of using the tailstock, offset method of machining tapers is

    You can only machine external tapers

  • 42

    The lathe taper, turning attachment component that prevents backlash from developing in the cross slide during operation is the

    Drawbar

  • 43

    To take depth of cut when using the taper attachment, use the

    Compound rest

  • 44

    You can keep a drill from turning when you float it on the tailstock center by

    mounting it in a lathe dog and resting it on the compound rest

  • 45

    when preparing for hand reaming you should rough drill a hole

    1/32 undersized

  • 46

    to produce a very accurate hand, reamed hole you

    drill approximately 1/32 undersize bore within 0.005 and then hand ream

  • 47

    The revolutions per minute you should use for machine reaming is

    1/2 of the drilling speed

  • 48

    The end relief of a boring tool varies with the

    Diameter of the hole

  • 49

    The position of the boring tool in relation to the work for boring is

    5° above center for straight and on center for taper boring

  • 50

    to prevent producing bell mouthed holes when boring

    Take free cuts to reduce springing

  • 51

    in the thread designation 1/4–20 UNC – 3B, the 3B represents a

    Close tolerance internal thread

  • 52

    Unless otherwise, specified all international organization for standardization, metric, threats are considered

    Right hand

  • 53

    Thread micrometers are designed to give a direct reading of thread

    Pitch diameter

  • 54

    when you grind a thread, cutting tool for cutting unified threads, you grind the cutting edge to ensure an included angle of

    60°

  • 55

    The amount of side relief angle ground on a threading tool, depends upon the

    Helix angle of the thread

  • 56

    During a threading operation takes successive cuts by setting a depth of cut with the

    Compound arrest

  • 57

    Before you cut internal threads on a work piece, you must bore the hole to the

    Minor diameter of the thread

  • 58

    During internal threading operation, positioned the compound rest

    29 to 30° to the left of the perpendicular position

  • 59

    The main difference between cutting right hand and left-hand threads is when you cut

    Left-hand threads, you swivel the compound rest to the left for the external threads

  • 60

    The size of the undercut machine in a shot as the star port for a left hand threading tool should be

    Equal to a least one thread pitch, wide and slightly deeper than the single thread depth

  • 61

    The method of cutting multiple lead threads on the lathe that works best for cutting ACME, and square threads is

    Positioning the compound rest parallel to the ways

  • 62

    When you set the cutting tool center gauge for cutting taper thread, as you said it to the

    Straight portion of the pipe

  • 63

    they included angle on the a ACME thread is

    29°

  • 64

    How wide should you grind the point of a square 13 tool for cutting internal Square threads

    slightly less than 1/2 pitch

  • 65

    when coming to the end of a cut while machining metric threads on a standard lathe you

    Back out the cutting do not disengage the split nut

  • 66

    The spindle speed you should use when power tapping a whole with a lathe is

    10 to 30 RPM

  • 67

    if you’re considering a power tapping operation, restrict the operation to taps of at least a

    1/2 diameter

  • 68

    The setting for your finish cut when you thread with a geometric dye is the

    Actual screw pitch

  • 69

    if you allow the work piece to stop without relieving the nursling tool, pressure the

    Work May spring

  • 70

    if the diametrical pitch and work, blank diameter are not in relation to each other, the nurl

    tool does not track properly

  • 71

    When dressing a grinding wheel on the post grinder, the final depth of the cut should be

    0.0005

  • 72

    During an internal grinding operation, the grinding wheel and work piece should rotate

    In the same direction at the point of contact

  • 73

    by using the micrometer carriage stop, you can position the carrots to a tolerance within

    0.0001

  • 74

    The factors use identify milling machines are

    Size horsepower model and type

  • 75

    The size of a milling machine is determined by the

    Longitudinal table travel in inches

  • 76

    Before you tighten in or loosen the arbor nut on a horizontal milling machine you should

    Install the arbor support

  • 77

    The backlash and the vertical feet screw of a milling machine table is eliminated by

    The weight of the knee

  • 78

    The feature on a milling cutter that keeps the cutter tooth from rubbing in the cut as it passes is the

    Primary clearance angle

  • 79

    The feature of a plane milling cutter that reduces shock and permits a smooth cutting action is

    helical tooth

  • 80

    The type of milling cutter you would selected, cut off work or mill narrow slots is the

    Metal slitting saw

  • 81

    The corner on a shill mill easiest to grind is the

    chamfered corner

  • 82

    While rotating in mills with a right hand cut are designed to

    Counterclockwise only

  • 83

    The type of email that is best for interrupt the cuts is a

    helical fluted

  • 84

    what is the width and diameter of a 404 wood rough key seat cutter

    1/8 wide and 1/2 diameter

  • 85

    The number 54M on a mailing machine taper adapter means the adapter has a number

    50 milling machine taper outside, and a number for Morse internal taper

  • 86

    if you have a spindle speed of 80 revolutions per minute a chip thickness of 0.004 inch and a card with a 12 teeth what is the correct feed rate determined by using the formula F = T x NT x RPM

    3.8 inches per minute

  • 87

    The process of milling, a flat surface parallel to the cutters, axis is an example of

    Plain milling

  • 88

    The process of mailing a flat surface perpendicular to the cutter axis is an example of

    Face milling

  • 89

    When you select a milling cutter for face milling select one that

    Is slightly larger and diameter than the material surface

  • 90

    If after taking your first boring cut you notice the hole is not properly located adjust the

    Table to bring the spindle to the proper location

  • 91

    To mail a square ended keyway in a shaft. You should use a.

    Plain milling cutter

  • 92

    you align the index head with the longitudinal axis of the milling machine table by using

    Keys on the base plate

  • 93

    solve the plane indexing solution to machine a hexagon on a round workpiece use of formula T = 40 divided by by N

    6 turns 26 holes using a 39 – hole circle

  • 94

    when you turn a index crank one complete turn on a 40:1 index the work rotates

  • 95

    The type of indexing attachment that is quick and easy to set up and is adjusted by the use of a clutch lever is

    Super spacer

  • 96

    The milling machine attachment used to machine complex. Compound angles is the.

    Toolmakers knee

  • 97

    when using the Cartesian system, the spindle axis is

    The Z axis

  • 98

    If line segments do not begin, and in at the same point when creating geometry for a computer numerical control

    Do you have problems? Converting them tool paths.

  • 99

    The purpose of a post processing a completed computer, edit design/computer. Edit manufacturing file is it

    Converse the program into G code

  • 100

    If the toilet offset is not set during the programming phase

    Manually set it at the machine before cutter begins