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Maintenance Practices > Tools > Flashcards

Tools Flashcards

1
Q

When using a hack saw, how many teeth must be in contact with the metal?

A

More than one

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2
Q

What technique is used to produce a good cut with a hack saw?

A 
Hold at an angle 
Forward stroke under pressure 
Return stroke without pressure
Use whole blade 
Near end of cut, reduce pressure
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3
Q

What has to be remembered when fitting normal hacksaw blades and junior hacksaw blades?

A

Normal - Teeth pointing away from handle

Junior - Teeth pointing towards handles

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4
Q

What prevents the hacksaw blade from binding in the material when in use?

A

Blade is waved

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5
Q

What is a Double-Cut file?

A

Two sets of teeth overlaid for faster material removal

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6
Q

When would a double-cut file be used?

A

Fast metal removal

Where rough finish is permissible

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7
Q

What types of cuts of files are there?

A

Single
Double
Rasp
Curved (dreadnought)

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8
Q

How is a file best used?

A

Bench vice 5-8cm below elbow
Gentle pressure on forward stroke
One hand on handle, other on file itself

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9
Q

Purpose of draw-filing?

A

Finishing off a material

Smooth finish

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10
Q

What is the purpose of the flute on a drill?

A

Removal of swarf

Allow cutting fluid to reach cutting lips

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11
Q

What elements make up the body of the drill?

A

Lip, land, margin, flute

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12
Q

What type of drill is best for sheet metal work?

A

Jobber drill

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13
Q

What is the drill point angle utilised for general purpose drilling?

A

118 degrees
140 degrees
80 degrees

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14
Q

A pillar drill makes it possible to do what?

A

Precision work

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15
Q

Advantages of pneumatic drills

A

Less hazardous

Control

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16
Q

Probable causes if a drill won’t feed into the material?

A

Blunt

Drill too large (pilot hole required)

17
Q

Purpose of a drill guide?

A

Keeps the drill 90 degrees to the skin surfaces

18
Q

How is a hole-finder used?

A

Resembles a clamp that slips over the new skin
Pin underneath which fits through the hole in the structure
Shows drill where next hole will be

19
Q

How is a drill gauge used?

A

Tip of drill inserted into holes until one fits

20
Q

Advantages of a drill agent?

A

Lubricates
Cools
Improves tool life

21
Q

Two systems of fits?

A

Hole based

Shaft based

22
Q

Common factors that affect the size of a reamed hole

A 
Pilot-hole diameter 
Hardness of material 
Speed 
Sharpness 
Feed
23
Q

What is knife-edging?

A

Sheet metal being countersunk entirely through the sheet

24
Q

What countersink angles are in aviation?

A

82 degrees
120 degrees
100 degrees

25
Q

Purpose of a microstop countersink?

A

Controls countersink depth and keeps cutter perpendicular to the work surface

26
Q

What device is used to countersink inaccessible fastener holes?

A

Back counter sinker

27
Q

What is Spot facing?

A

Cutting flat area for a bolt head or nut on a contoured or uneven surface

28
Q

In what situations should you allow extra depth when adjusting a Microstop Countersinker?

A

Because it is done with skin tape, allow for this added thickness

29
Q

What common fastener thread forms are used on aircraft?

A

UNC

UNF

30
Q

What does a regular Hand Tap Set consist of?

A

A taper, an intermediate and a bottoming tap

31
Q

Benefit of synthetic oil over mineral oil?

A

Can produce very consistent quality base stocks of different viscosities

32
Q

What is the problem with putting synthetic oil in a mineral system and vice versa?

A

Can break down the seals, destroying effectiveness

33
Q

With a micrometer, what should be used to turn the thimble?

A

Ratchet stop

34
Q

How is a micrometer calibrated?

A

Zero check

Slip gauge

35
Q

What different types of measurements can be taken with Vernier Callipers?

A

Imperial and metric
External
Internal
Depth

36
Q

Most common vernier calliper?

A

1/20th or 0.05mm

37
Q

What maintenance occasionally needs carried out on punches?

A

Deburring of striking face

Maintenance Practices (7 decks)

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