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Machine Theory > Quiz #2 - Lathes > Flashcards

Quiz #2 - Lathes Flashcards

1
Q

When filing on a lathe the file handle is held in:

  1. the right hand
  2. the left hand
  3. either hand
  4. no required
A
  1. the left hand
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2
Q

Lathes are commonly determined by:

  1. the maximum distance between centres and the swing over the ways
  2. the maximum shaft diameter it can accomodate
  3. the length of the bed
  4. horsepower at the cutting tool
A
  1. the maximum distance between centres and the swing over the ways
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3
Q

The feed directional lever is found on ___________, the feed revers lever is found on __________, and the feed engage lever is found on _________ of the lathe.

A
  • Apron
  • Head Stock
  • Apron
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4
Q

The four main parts of the carriage are:

  1. Knee, saddle, cross-slide and tool post
  2. Compound rest, saddle, apron and tool post
  3. Compound rest, apron, cross-slide and tool post
  4. Compound rest, apron, cross-slide and saddle
A
  1. Compound rest, apron, cross-slide and saddle
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5
Q

The tool post of a lathe is attached to:

  1. the cross-slide
  2. the saddle
  3. the compound rest
  4. the carriage
A
  1. the compound rest
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6
Q

The quick change gearbox on the engine lathe is used to:

  1. change the speed of the lathe
  2. change the feed rate of the lathe
  3. change the back gear ratio
  4. reverse the rotation of the headstock spindle
A
  1. change the feed rate of the lathe
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7
Q

The comound rest:

  1. can cut a taper
  2. has a graduated collar
  3. can swivel 360 degrees
  4. all of the above
  5. none of the above
A
  1. all of the above
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8
Q

The tailstock has a two piece adjustable casting to permit:

  1. oversize drilling
  2. threading
  3. taper turning
  4. boring
A
  1. taper turning
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9
Q

The headstock and tailstock have a _____ taper. A center installed in the headstock is a _____ center, or installed in the tailstock is a _____ center.

A
  • Morse
  • Live
  • Dead
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10
Q

Explain two advantages of a four jaw chuck.

  1. _________
  2. _________
A
  1. Can be used with irregular shaped work pieces.
  2. More accurate when dialed in correctly.
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11
Q

The follower rest is usually mounted on the:

  1. bed
  2. saddle
  3. cross-slide
  4. apron
A
  1. saddle
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12
Q

The thread chasing dial attaches to the __________ and indicates when to __________.

A
  • Apron
  • Close the split nut.
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13
Q

When can the split nut be engaged with:

  1. Odd numbered TPI’s: __________
  2. Even numbered TPI’s: __________
A
  1. Any main graduation
  2. Any graduation
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14
Q

The size of a tapered mandrel is usually stamped on the:

  1. small end
  2. large end
  3. middle
  4. not stamped
A
  1. large end
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15
Q

A taper mandrel has a taper per foot:

  1. 7 degrees
  2. .005 - .010 inches
  3. .006 - .008 inches
  4. not stamped
A
  1. .006 - .008 inches
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16
Q

Identify the four methods to produce a taper on a lathe:

  1. __________
  2. __________
  3. __________
  4. __________

“Dammit” is not an acceptable answer.

A
  1. Tail stock offset
  2. Taper attachment
  3. Compiund rest
  4. Form tool
17
Q

What is the lathe RPM set to when parallel turning a 2” diameter shaft with a cutting speed of 90 SFPM?

  1. 180
  2. 360
  3. 90
  4. 2
18
Q

What units are used to specify lathe feed rates?

______________________________________

A

Inches or mm per revolution

19
Q

To turn a diameter on the end of a long square work piece, the work piece can be inserted into a __________ and supported in a steady rest.

  1. spider
  2. cathead
  3. collet
  4. chuck
20
Q

Never part off work held:

  1. in a four jaw chuck
  2. In a three jaw chuck
  3. between centres
  4. with a parting tool
A
  1. between centres
21
Q

A right handed cutting tool cuts towards the tailstock.

  1. True
  2. False
22
Q

What is the purpose of boring on a lathe?

A

Accurately enlarging an existing hole to an exact size.

23
Q

When machine reaming holes up to 1/2” diameter, they are first drilled _____ under the finished size and holed over 1/2” are drilled _____ under the finished size. Lathe RPM is set to _____ and the feed is _____ of that used for drilling.

A
  • 1/64
  • 1/32
  • 1/2
  • twice
24
Q

When knurling on a lathe, the spindle speed and feed should be set to:

  1. fast speed, high feed
  2. slow speed, low feed
  3. fast speed, low feed
  4. slow speed, high feed
A
  1. slow speed, high feed
25
Q

Three reasons why knurling is done on a workpiece:

  1. for tool handles, to resist corrosion, and for appearance.
  2. increase diameter, appearance, and provide a gripping surface.
  3. to cover up errors of a part, for tool handles, and press fits.
  4. none of the above
A
  1. increase diameter, appearance, and provide a gripping surface.
26
Q

List three qualities of a good cutting fluid:

  1. __________
  2. __________
  3. __________
A
  • Lubricate
  • Resist Corrosion
  • Remain stable
  • Resist rancidity
  • Non-toxic
  • Transparent
  • Low viscosity
  • Non-flammable
27
Q

Cutting oils are best suited for __________ applications.

28
Q

For a lathe toolbit to cut efficiently, the tool must be set to the centre of:

  1. the bed axis
  2. the chuck axis
  3. the headstock axis
  4. the spindle axis
A
  1. the spindle axis
29
Q

When machining the length of the workpiece parallel to the axis of a lathe, it is called:

  1. turning
  2. chamfering
  3. boring
  4. facing
30
Q

The steady rest is attached to the __________ and supports the work end of a long part.

  1. bed
  2. headstock
  3. tailstock
  4. saddle
31
Q

When using the compound rest to cut a thread, the angle it should be set to is:

  1. 29 degrees
  2. 31 degrees
  3. 27 degrees
  4. 30 degrees
A
  1. 29 degrees
32
Q

When the work piece must be held accurately, use a:

  1. a drive plate
  2. a universal chuck
  3. a four jaw chuck
  4. a three jaw chuck
A
  1. a four jaw chuck
33
Q

A face plate is:

  1. used for round work
  2. used with couterweights
  3. used for pipe work
  4. drives a lathe dog
A
  1. used with counterweights.

A faceplate is a large disc that may be attached to the lathe spindle nose. It is similar to a drive plate, but is larger. Faceplates are used to hold oddly shaped workpieces that cannot be held in a chuck or between centres.

A workpiece is clamped to the surface of the faceplate with a combination of bolts, straps, step blocks and angle plates, depending on the shape of the workpiece. There are slots and holes in the faceplate to accommodate the bolts.

A faceplate setup must be balanced. If it is not, the lathe will vibrate, causing poor surface finish and loss of accuracy. It can even be very hazardous to the machine and operator if the spindle speed is set too high. Counterbalances must be used on a faceplate setup when balancing is required.

When fastening a very heavy workpiece to a faceplate, it is easier to remove the faceplate from the lathe and set it on a horizontal surface. Then, set the workpiece on the faceplate and fasten it in place.

34
Q

A tapered pin has a _____ taper.

  1. 1/8” TPF
  2. .006-.008” TPF
  3. 1/4” TPF
  4. 5/8” TPF
A
  1. 1/4” TPF

Machine Theory (7 decks)

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