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Airframe Repairs > Tools > Flashcards

Tools Flashcards

1
Q

How are files categorised? (4)

A

Length
Section
Grade
Cut

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2
Q

Name the 9 different types of file

A

Hand
Flat
Half-round
Round
Square
Triangular or Three square
Knife Edge
Warding
Rasp

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3
Q

Name the different types of hammer (3)

A

Ball pein
Cross pein & straight pein
Nylon faced

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4
Q

How are toolmakers clamps classified?

A

Overall length

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5
Q

How should measuring equipment be treated?

A

Kept free from rust and not subjected to rough usage

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6
Q

How to test an engineers square for accuracy?

A

Draw a line against a true edge, flip the square, draw another line.

Any gap will show twice the error

Or check against a master square

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7
Q

How do you sharpen a spring divider point?

A

Should close the divider legs and outside of legs be honed on an oilstone

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8
Q

What are the two types of hacksaw blades and how many teeth per inch does each type have?

A

Fine tooth blade - 24 to 32 teeth per inch

Coarse tooth blade - 18 teeth per inch

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9
Q

What are 3 different types of hacksaw

A

Standard
Radial (for contours, radii)
Junior (for small diameter)

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10
Q

Why is a chisel used in airframe repair?

A

To remove the heads from rivets

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11
Q

How is a chisel sharpened?

A

By grinding on an emery wheel (grindstone)

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12
Q

How are vee blocks classified?

A

By the maximum diameter of the work they can hold

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13
Q

What are the three heads of a combination set and what do they do?

A

Square head (engineers square)

Centre head (for finding the centre of the end of a round bar or tube)

Protractor head (angles)

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14
Q

What should you check before using a hammer?

A

The head is securely fixed to the shaft and the shaft is free from cracks

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15
Q

What should you check before using a file?

A

The hand is securely fitted

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16
Q

How to sharpen the scribing nib of a vernier height gauge?

A

Using an oilstone

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17
Q

What does SWG stand for?

A

Standard wire guage

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18
Q

Whats the difference between measuring and gauging?

A

Measurements are dimensions measured using an instrument while gauging means comparing the dimension without reference to its size

19
Q

What information is on a calibration label? (5)

A

Date of calibration
Date of next calibration
Serial number
Certificate of calibration number
Calibration centre

20
Q

What are three main types of standard gauges?

A

Plug gauge - holes an screw threads GO/NO GO (feeler gauge)

Calliper gauge - wire & drill size

Profile gauges - radius & screw pitch

21
Q

3 types of pneumatic hand drill

A

Straight drill
Angled drill
Pistol grip drill

22
Q

Why are tools in aircraft environments air driven? (2)

A

Avoid possibility of static discharge around fuels and oils

Controllable rotational speed and high torque

23
Q

6 main attachments for a pneumatic drill

A

Twist drill
Cone cutters
Rotational files
Hole saws
Abrasive pads
Countersinking tool

24
Q

What are the two grades of twist drill?

A

Carbon steel
High speed steel

25
Q

Whats the purpose of the helical shape on a drill bit?

A

To allow swarf to be cleared from the hole and allow lubricant to reach the cutting edge

26
Q

What shank does a drill below 12.5mm have?

A

A parallel shank

27
Q

What shank does a drill above 12.5mm have?

A

Tapered shanks

28
Q

What lubricant is recommended for drilling mild steel?

A

Soluble oil

29
Q

What lubricant is recommended for drilling High-carbon & alloy steels and aluminium alloys?

A

Kerosene

30
Q

What lubricant is recommended for drilling cast iron and brass?

A

Usually no lubricant required

31
Q

Whats the taper of an imperial reamer?

A

1 in 48

32
Q

Whats the taper of a metric reamer?

A

1 in 50

33
Q

What are the three types of tap?

A

Taper tap

Secondary tap

Plug tap

34
Q

Which tap is used to finish a thread in a blind hole?

A

Plug tap

35
Q

Whats the difference between a taper tap and a secondary tap?

A

A taper is used to start the thread cutting process

The second tap is used afterwards to deepen the thread

36
Q

To cut an internal screw thread, what size should the hole be?

A

Equal to the minor diameter of the thread

37
Q

What size diameter should a rod be to cut an external thread on it?

A

Equal to the major diameter of the thread

38
Q

What two reasons is a wire thread insert used?

A

For repairing a damaged thread

For providing a hard wearing thread in a material which is otherwise not hard wearing

39
Q

What is used to extract a broken stud?

A

An ezy out

40
Q

Whats screw pitch?

A

The distance between threads

41
Q

What are the 4 Cs for pre use checks of vernier calliper?

A

Calibrate
Clean
Close
Check out

42
Q

What material is used to manufacture a chisel?

A

High carbon steel

43
Q

When using a vernier calliper for internal readings what myst you remember to do?

A

Add the thickness of the jaws to the reading

Airframe Repairs (11 decks)

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