Millwright Flashcards
(77 cards)
1
Q
Taper in a bore of milling machine
A
Standard steep machine taper
2
Q
Does the table swivel on universal horizontal mill
A
Fuck yes
3
Q
What could be used in a heavy duty collet
A
Threaded shank end mill
4
Q
Faction size 1/16- 4
Number size 97-1
Letter size A-Z
Metric size0.04 to 80mm
A
5
Q
General purpose drilling
A
118
6
Q
Soft material
A
60-90
7
Q
Hard material
A
150
8
Q
Follower rest
A
Keeps workpiece from deflection away from cutting tool, by supporting the immediate area of cut
9
Q
Gib key taper
A
1/8 tpf
10
Q
ANSI taper
A
3.5 tpf
11
Q
Jacob’s taper
A
0.591 to .979
12
Q
How does the apron hand wheel move the carriage.
A
Rack and pinion
13
Q
3 auxiliary stops
A
Parreles, jack screws, table stop block
14
Q
Set screw to bit
A
Weldon
15
Q
Milling machine will
A
Except Morris taper into spindle
16
Q
Stop block
A
Keep work peice from shifting under high pressure
17
Q
Center drill angle
A
60
18
Q
Step drill bits
A
Drill and bore
19
Q
Pilot hole
A
From 3/4 and up
20
Q
Core drill
A
Used to enlarge hole
21
Q
Power hacksaw blades compared to hand
A
Thicker and wider, 12-40 inch and 5/8 to 2.5 in width
22
Q
Two types of power hacksaw blades
A
Fully hardened blades, and bimetal blades
23
Q
Fully hardened blades,
A
These blades are good for material such as stainless steel these blades withstand heavy feed pressures for faster cutting than other types of hacksaw blades
24
Q
bi-metal blades
A
High-speed steel tooth edge with a tough alloy steel back,
25
Toughness
Toughness refers to the resistance to fracture or the amount of energy a substance absorbs before it breaks
26
Hardness
Hardness is the ability of a material to resist penetration
27
Malleability
A material can be shaped or Moulded easy
28
Locking type pins
Quick release lock pin and spring locking pin ( hair pin)
29
Pratt and Whitney key
Used when a hub slides back and forth on the shaft and are usually attached with screws or buring The hub
30
Jam nuts
Thinner than a regular hex nut and are paired with hex nuts to lock them into position
31
Prevailing torque nuts
Have a deformed or crimped thread at the top of the crown that provides the locking Force against The mating thread
32
Flange lock nuts
Have a built-in external washer
33
Belt grinder
Used for polishing and grinding, the width of the belt ranges from a quarter inch to 26 in, great for quickly to buring and chamfering a work piece
34
Aluminum oxide
Gray, light gray and white
35
Silicone carbide green
Green silicone carbide wheels are used to grind cemented carbide ceramics and other hard materials
36
Black silicone carbide
Used to grind cast iron and non-ferrous metals, like brass copper and aluminum
37
Disc bonds
Vitrified, resinoid, and rubber
38
Vitrified
Designated by the letter v, this bond is used for 50% of all Wheels produced, it is made of clay. 6500
39
Resinoid
Designated by the letter b it is used for 33% of all Wheels produced, 9500 -1600 rpm
40
Rubber
Designated by the letter R, it is made by vulcanizing a mixture of grain crude rubber and sulfur, it's good up to 16,000 RPM
41
Power load types
22 caliber 25 and 27
42
Power load with a crimped end
Low velocity tools
43
Power load identification
Number one, is gray number two, is brown number three, is green number four, is yellow number 5, is red number 6, is purple
44
Do you need good ventilation for operating an explosive tool
Fuck yes
45
What is the transverse vial on a Master precision level 4
It's not as sensitive as the main vial it's to see if the level is positioned correctly
46
Bench and Carpenters level
Good to 0.1 of a degree or .020 of an inch per foot
47
What grout mixtures tend to shrink
Homemade
48
Formula for leveling a base
X = shim reading * a/b
49
Types of couplings
Rigid, flexible and special purpose
50
Types of special shims
Step shims elastomer shims
51
Elastomer setup
Sandwiched between a metal shim
52
Horizontal moves
Positive readings are toward the datum, and negative readings are away from the datum
53
The four types of steel rule
Spring tempered rule, flexible rule, narrow rule, hook rule
54
What is a basic measurement
1/64 or 0.5 mm
55
Measuring tape markings
Foot/inch, metric and continuous inch and metric
56
Nominal size
Is the purpose of general identification
57
Actual size
The size after it's being measured
58
Basic size
The theoretical size which tolerances are applied, basic size can refer to both mating parts
59
Limit of size
Limited size is the largest upper limit and the smallest lower limit a part can be and still be acceptable
60
Maximum metal condition
Smallest hole and largest shaft
61
Least metal condition
Largest hole smallest shaft
62
What is tolerance
Tolerance is the total amount of variation permitted in the size of duplicate parts
63
Limit dimension
Only maximum and minimum dimensions of the part are specified
64
Allowance
The intentional difference between two mating parts at maximum metal condition
65
Positive and negative allowances
A positive allowance is when the whole is larger than the shaft, a negative allowance the hole is smaller than the shaft
66
What do you need to do when dressing turning or balancing any grinding wheels
Wear a respirator or dust mask at all times
67
What is on a blotter wheel
Max rpm, size of wheel, type of wheel
68
Side wheel grinder
Same as bench and pedestal grinders except the side of the wheel is used for grinding instead of the face, usually with silicone carbide grinding wheel for sharpening carbide tool
69
What is a tool rest for on a grinder
It is slightly above the center, and it is to provide for resting the work piece on
70
What should you always do before installing a wheel on a grinder
F****** ring test it
71
What grit is courser on grinding wheel 46 or 60 grit
46
72
When would you use a diamond dresser
When a very fine finish is required
73
On a pedestal grinder the gap between the grinding wheel and the workrest should not exceed
1/8
74
What is the thread
The helical ridge that runs around the cylinder or cone
75
Thread profile
The view of the thread when the bolt or nut is cut in half lengthwise along its axis
76
Minor diameter
The smallest diameter of a screw thread, on an external thread it is measured across the root of the thread, on an internal thread it is the inside diameter
77
The crest
