324 Flashcards

1
Q

always check the lathe bed to make sure its

A

level

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2
Q

you should always cut off bar stock for machining

A

slightly longer than needed

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3
Q

longer workpieces should be

A

mounted between centers

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4
Q

when installing a faceplate

A

screw it on by hand

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5
Q

always select a lathe dog

A

not larger than necessary to accept the workpiece

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6
Q

always remember that your depth of cut will

A

reduce the overall diameter by twice the amount of cut

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7
Q

always use a righthand tool when

A

cutting right to left

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8
Q

depending on the hand of cut the cutting tool point should be __ degrees toward the headstock or tailstock

A

4 to 5

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9
Q

in rough turning the cutter point should positioned __ the centerline

A

5” above

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10
Q

with a constant depth cut

A

an increase in speed requires a decrease in feed

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11
Q

when a shoulder is to be turned close to the end of the workpiece use a scale and

A

hermaphrodite caliper to measure location

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12
Q

the bent leg of a hermaphrodite caliper is placed against the ___ of the workpiece

A

faced end

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13
Q

in order to lay off shoulder lengths more accurately when making more than one identical use a

A

parting tool

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14
Q

filleted shoulders are turned with a __ cutting tool

A

round nosed

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15
Q

different size fillets are made by changing

A

the nose radius on the cutting

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16
Q

the split nut assembly is used only when

A

cutting threads

17
Q

never engage the split nut assembly

A

when another automatic feed mechanism is in operation

18
Q

the distance from a point on one thread to the same point on the next thread parallel to the screw axis is the

A

pitch

19
Q

the distance which a point on one thread travels during one revolution of the screw is the

A

lead

20
Q

when threading long slender workpieces they should always be

A

supported with a follower or steady rest

21
Q

a 5/8 in.ft taper often used for twist drills reamers end mills and lathe centers is the

A

morse taper

22
Q

a taper whose calculation depends on its assigned number in the form of a numerator over a constant denominator of 8, 10, or 2 is a

A

Jarno taper

23
Q

the basic formula for calculating a taper is

A

Lg dia - small dia / length

24
Q

the taper turning method which requires work to be removed from the lathe for the setup is the ___ method

A

tailstock setover

25
Q

the amount of inward and outward feed on the lathes compound rest when using the taper attachment is controlled by the

A

guide bar