Lathe Components and Accessories, Lathe Operations, Milling and Drilling Flashcards
(122 cards)
1
Q
If you want to raise the turrit tool post you must
A
Shim-it
2
Q
Why should you use parallels under a workpiece when plunge cutting a through-hole
A
to prevent cutting into the table
3
Q
An infeed of .050 on a direct reading cross-slide results in a diameter reduction of?
A
.050 (same)
4
Q
An O-ring grove would be cut with?
A
A form tool
5
Q
Cutting fluids on a lathe are used mainly for?
A
decreasing heat and friction
6
Q
When a vise is being aligned on the table of a knee and column milling machine, how should a magnetic base dial indicator be mounted?
A
Dial base on column, pointer on the vise’s solid jaw and move the table
7
Q
The result of knurling is?
A
A work piece slightly larger in diameter
8
Q
What type of grinding wheel is best suited for grinding cemented carbide?
A
Silicon carbide
9
Q
What are the tapping threads procedures? name them in order sequence?
A
- Taper
- Plug
- Bottoming
10
Q
When using a sensitive drill press what should you do as the drill breaks through the workpiece?
A
Ease up on the pressure
11
Q
What is the use of the tang on a drill?
A
is for removal only, not for transmitting torque
12
Q
Other than it’s magnetic base and its ability to transport around the shop and to the floor. What is another advantage that a magnetic-base drill offers?
A
The ability to drill, tap, and ream
13
Q
Why should you clean and lightly oil milling machine tables?
A
to prevent rusting, which results in loss of accuracy
14
Q
A centre installed in the tailstock is a?
A
dead centre
15
Q
What is the amount of taper on a taper pin?
A
1/4
16
Q
Never climb mill on a milling machine unless it has a?
A
Backlash eliminator
17
Q
What is the floating reamer holder?
A
it reduces the effect of reamer misalignment because of its self centering when entering the hole
18
Q
The compound rest can swivel up to?
A
360°C
19
Q
What is one of the best methods use when drilling holes in two mating parts?
A
is to clamp the two pieces together and drill them as one
20
Q
A soft material drill have an included angle of?
A
60° - 90°
21
Q
The process of enlarging the top of an existing hole to accept the head of a bolt or screw?
A
Counter boring
22
Q
To achieve a good knurl you should?
A
flood the work piece with coolant, because it must fully lubricate
23
Q
What are the two types of shanks?
A
- Straight shank
* Taper Shank
24
Q
The weight of the machine refers to the rigidity of the bed it refers to?
A
the machine’s ability to resist a deflection on the heavy load, rather than the actual weight in pounds or kilograms
25
How are metric taper design?
as a ratio
26
A reamer is used to?
Produce a smooth accurate hole
27
Taper mandrels or arbors range from?
.006 to .008 taper per foot
28
Before changing the back gear on a lathe you must?
lockout the power supply and disconnect the machine
29
Which type of machine tap pushes the chip out ahead of the tap?
Spiral point (gun)tap
30
Sensitive drill presses have no?
Power Feed
31
How are Radial arm drilling machines size?
they are sized by the column diameter and by the greatest distance from the spindle axis to the edge of the column, when the drilling head is extended to the maximum distance along the radial arm
32
The four styles of milling cutters are?
* Solid high speed steel
* Solid carbide
* Carbide cutting edges brazed onto a solid shank
* Indexable inserts clamped in a holder
33
What are the main categories of cutting fluids?
* cutting oils
* emulsifiable oils
* chemical cutting fluids
34
The lip relief/ clearance angle on a drill should be?
8° + 12°
35
When grinding a work piece between centres you feed?
with the carriage feed
36
What are the two ways of sizing a sensitive or upright drill press?
* by the distance from the column to the tool
| * by the larges diameter of workpiece that can be centered under the tool
37
The hand drill is quicker and more versatile than any drill press for?
Drilling small non-vertical holes
38
What is the main purpose of stop blocks
to keep the workpiece from shifting under heavy cutting pressures
39
Most lapping is now done on?
flat surfaces
40
The manual oil pump on the carriage pumps oil to?
the ways
41
The included point angle of a countersunk hole for most flathead screws is?
82°
42
Cutting speed refers to?
Peripheral speed the cutting tool moves
43
When grinding HSS, you must remember to?
Quench
44
A pilot counter bore is usually how much of an inch smaller than the hole diameter?
.002 and .005 of an inch smaller than the hole
45
The pitch of a thread cut on a lathe is controlled by the?
lead screw
46
The three methods used for hole location transfers are the?
* Twist drill method
* Transfer punch method
* Transfer screw method
47
A hard materials drill have included angles of?
150°
48
The finish on a thread can be enhanced by using?
cutting oil
49
A face mill produces a surface that is?
Flat and perpendicular to the axis of the spindle
50
How can you convert a horizontal milling machine into a vertical milling machine?
By using vertical milling attachments
51
List the different standards used to size a drill or twist drills?
* Fractional size
* Number size
* Letter size
* Metric size
52
What must you ensure when attaching a collet in to the nut?
Make sure it snaps on
53
A followers rest has how many jaws?
2 adjustable jaws
54
The size of the lathe is determine by the?
maximum distance between centres and the amount of swing
55
Once you have set a taper attachment to the desired angle, what important step must you follow?
take a trial cut and measure the taper
56
Explain the two main advantages of a four jaw chuck
* is more accurate than the 3 jaw chuck
| * it can hold square or oddly shape work pieces
57
To remove a taped shank twist drill from the drill press spindle, use a?
Drill drift
58
What is the abbreviations used to express the feed rate on a drill press?
IPR
59
Electric hand drills are limited by?
The Amount of Feed Pressure (and RPM) that can apply to large-diameter drills
60
What holds a milling machine arbor securely in the spindle?
Draw bolt
61
Turning is usually done with a
right hand tool
62
The process of squaring the surface of a work piece to a drilled hole?
Spotfacing
63
The length of a keyseat it doesn't include?
Any runout or radius left by the cutter
64
The factor that determines RPM and feed rates, are?
* work piece materials
* cutting tool materials
* operation being perform
65
Cutting speed refers to?
Peripheral Speed
66
What are the different end-mill shank?
* Straight
* Weldon
* Threaded
* Double end
67
The tail stock has two piece adjustable casting to permit?
taper turning
68
Small drills require a higher ______ than larger ones
RPM and less feed per revolution than larger drills
69
The most common lathe operations is?
turning
70
What is a shim used for, on a milling machine?
to fill the gap under the workpiece
71
The main parts on an engine lathe
* the bed
* headstock
* the quick change gearbox
* the carriage
* the tailstock
* the ways
* back gears
72
How do you size knee and column type milling machines?
They are sized according to the range of movement possible and horse power rating of the main motor
73
Metric cutting speed formula
RPM=(CS(m)x320)÷Diameter of Cutter
74
The headstock of a lathe is located on the?
left and contains spindle
75
Most screw heads have an included angle of?
82°
76
A lathe dog is used to?
transmit drive power to a mandrel or work piece held between centres
77
The thread chasing dial when threading even numbers, at what graduation would you engage the split nut?
any graduation
78
A general-purpose drill for drilling metals has an included point angle of?
118°
79
The thread chasing dial is used to?
time engagement of the split nut when cutting a thread
80
Milling machine spindles have a standard steep machine taper of?
3-1/2 inch taper per ft (TPF)
81
Imperial cutting speed formula
RPM=(CSx4)÷Diameter of Cutter
82
The chuck best suited for holding odd shape pieces is the?
four jaw chuck
83
Cutting a taper with the compound rest has what major disadvantage?
there is no power feed
84
Which variable is the most important when determining spindle speed?
Diameter of the Drill
85
During what milling operation would you use a backlash eliminator?
For Climb milling
86
The six basic components to a knee and column milling machines are?
* base
* column
* overarm
* saddle
* knee
* table
87
What are the six approaches when drilling a hole or drill a hole?
* Drilling work held in a vise
* Drilling to an accurate layout
* Drilling large holes
* Drilling holes in matting parts
* Drilling round work
* Deep hole drilling
88
The quick change gearbox on the engine lathe is used to?
feed and speeds
89
What are the types of milling machines arbors?
* A arbors
* B arbors
* C arbors
90
What are the two main features on a plain horizontal?
* the main spindle is horizontal
| * the table does not swivel; rather , it moves at only right angles to the spindle
91
A revolving centre is installed in the?
tailstock
92
The thread-chasing dial?
tells you when to engage the split nut
93
What is boring?
enlarging an existing hole, but can not start a new one
94
A centre installed in the headstock is a?
live centre
95
A drill press spindle has a #2 morse taper. A twist drill with a #3 morse taper shank must be mounted in the spindle. How do you secure the drill in the spindle?
use a drill socket
96
Name the drill presses commonly found millwright shops
* sensitive drill press
* upright drill presses
* hand drills
* magnetic base drills
* radial drilling machine
97
To cut an angle of 60° on a work piece using a lathe you must set the tool post at what degree?
30° angles - because cuts are made at included angles
98
Any mechanical surface on a drill press that could rust must be?
Kept clean and oiled
99
Lathe are considered to be more dangerous than other machine because?
they have not evolved with safety features like most machines
100
The boring operation on a lathe is?
increasing the diameter of a hole in a work piece
101
When grinding on a lathe you should?
cover the ways with ply-wood
102
The apron hand wheel moves the carriage by means of?
rack and pinion
103
How does the feed in speed of a reamer is compare to a drill?
RPM is lower and feed is faster
104
The jacob taper per foot ranges from what sizes?
.591 to .979 inch taper per foot
105
The table on universal milling machines can swivel how many degrees?
up to 45° in either direction
106
Why should you store end mills separate from one another?
to protect their cutting edges from chip and wear
107
When a single point tool is used to machine on an internal feature is called the?
Boring
108
The depth of each cut varies with?
* the pitch of the thread
* the material being cut
* the type of cutting tool
* the rigidity of the set-up
109
The type of machine tool spindles include?
* lathe headstock spindles
* lathe tailstock spindles
* milling machine spindle
* drilling machine spindle
110
The four main parts of the carriage are?
* apron
* cross-slide
* saddle
* compound rest
111
When using power feed the workpiece must be?
clamped to the table
112
What is the maximum depth of cut for an end-mill?
1/2 the cutters diameter
113
A twist drill is divided into three parts which are?
* The point
* The body
* The shank
114
The thread chasing dial when threading odd numbers, at which graduation would you engage the split nut?
any main graduation
115
What is the negative result of using a tool post grinder on a lathe?
the dust destroys the ways
116
What type of taper is used in the tail stock?
a morse taper (self holding)
117
When filing a work piece in a lathe
hold the file in your left hand
118
What are the four main types of knee and column milling machine?
* Plain horizontal
* Universal horizontal
* Standard vertical
* Ram-type vertical
119
When finishing a work piece using an emery cloth, how should you hold it in position?
the end held in your left hand passes under the work piece and the end coming over the top is held in your right hand
120
The tailstock is locked in position on the ways of the lathe with the?
tailstock clamp
121
How is feed on a milling machine specified?
Inches Per Minute (IPM)
122
What is affected when drill bit tapers get damage?
the alignment and locking capabilities
