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Mill 1310 - Midterm Exam > Review Questions > Flashcards

Review Questions Flashcards

1
Q

What is the range of FEED & SPEED for knurling?

A

Low speed, High feed

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2
Q

What is the purpose of a mandrel?

A

Turning an outside diameter concentric to the bore

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3
Q

How do you ensure parallel turning on the lathe?

A

Align the tail stock with the headstock spindle bore

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4
Q

What’s the relative speed for centre drilling?

A

High

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5
Q

Cemented Carbide vs HSS operating speeds

A

Carbide is 3x faster (2-3/3-4 depending on setup)

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6
Q

To cut a taper smallest near the headstock, which way would you offset the tail stock?

A

Away from the operator

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7
Q

When is it best to change speeds using a spindle gearbox?

A

When the drive is at rest

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8
Q

What is the included angle of an ACME thread?

A

29 degrees

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9
Q

Which chuck can be adjusted to create the most concentric shaft diameters?

A

4 jaw chuck

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10
Q

What is the most accurate way of finishing a large hole on a lathe?

A

Face plate and boring bar

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11
Q

What is a concern for keeping gears engaged to complete a metric thread?

A

Once engaged, never disengage the split nut

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12
Q

What’s the most accurate way to check the tail stock alignment?

A

Use a precision test bar and run a dial indicator end to end

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13
Q

What’s changed from turning a LH thread vs RH thread on a lathe?

A

Lead screw rotation

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14
Q

When creating a nominal radius in multiple parts to be turned, which operation is best?

A

Purchase a cemented carbide form tool and corresponding holder

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15
Q

What to do with an imbalanced part being turned off a face plate?

A

Counter balance the part and use a reduced speed

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16
Q

60 degrees is the included angle for?

A

Centre drill

17
Q

When 3 diameters are turned and run accurately around the same centre of axis, it is called?

A

Concentric

18
Q

What is done on a thread diameter to allow the tool bit to run out?

A

Undercut at the shoulder to the thread depth before turning the thread

19
Q

What is the included angle of a UNF thread?

A

60 degrees

20
Q

The cutting speed for aluminum when using HSS urging tools is?

A

54 M/min or 200 ft/min

21
Q

Feed rate is the amount of tool travel every?

A

Machine revolution

22
Q

Why would a gear made of fibre be used in the drive train of a lathe?

A

Easily replaced if damaged from overload or mechanical impact

23
Q

What is the most common way to create a nominal, accurate hole with good internal finish on a lathe?

A

Drill slightly undersized and finish with a reamer

24
Q

To cut a triple start thread wanting 12 TPI, what would you set the lead screw to?

A

4 divided by the # of starts into the TPI

25
Q

What’s the best way to align lathe centres?

A

Test bar and dial indicator

26
Q

What’s the most common holding device used on a drill press?

A

Drill vise

27
Q

Define feed rate for a gear driven drilling machine?

A

Rate of tool advancement per revolution

28
Q

What’s the largest letter drill?

A

Z

29
Q

What’s the largest # drill?

A

1

30
Q

What would cause a blued cutting edge on a drill bit?

A

RPM too high

31
Q

What’s the best holding device for drilling through round stock?

A

V blocks

32
Q

What’s the proper tool for spreading taper shank drill bits from a sleeve?

A

Drill drift

33
Q

Which drilling operation is used to create a flat smooth surface on a casting bolt head?

A

Spot facing

34
Q

What’s the approximate taper per foot of a Morse Taper?

A

5/8” per foot

35
Q

To drill a 3” inch diameter hole in a thin cutting plate, which too to use?

A

Hole saw

36
Q

Compared to drilling what is the relative feed rate for reaming?

A

2-3x the drilling feed rate

Mill 1310 - Midterm Exam (1 decks)

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