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1st year millwright unit 2
millwright
129
Other
Not Applicable
01/31/2020

Additional Other Flashcards

 


 

Cards

Term
 

A gun tap would be used for

  • through holes
  • blind holes

 

Definition
through holes
Term
 

What is the included angle of a drill bit for hard material

 

Definition
135 to 150 degrees
Term
What is the included angle of a drill bit for soft material
Definition
60 to 90 degrees
Term
Why does a drill bit have its chisel edge thinned
Definition
the web gets thicker towards the shank
Term
What will happen if the cutting lip lengths on a drill bit are not equal
Definition
will cut oversized hole
Term
How can a Twist Drill be modified to drill soft materials such as brass
Definition
GRIND A SMALL FLAT ON THE CUTTING EDGE PARALLEL TO THE AXIS OF THE DRILL
Term
What are Core Drills used for
Definition
enlarge an existing hole
Term
How are Drill Chucks sized
Definition
by the largest drill size they will hold
Term
What is the definition of Drilling
Definition
making a hole where none existed before
Term
What size should a pilot hole be when drilling
Definition
slightly larger than the chisel edge
Term
What will happen if a pilot hole is too large when drilling a large hole
Definition
the drill will chatter
Term
At what height should the spacer block end of the strap clamp be in order to clamp properly
Definition
slightly higher than the workpiece
Term
How much clearance should there be behind the cutting edge of a drill bit
Definition
8 to 12 degrees
Term
Which is larger a D drill bit or a F drill bit
Definition
F
Term
What are the 4 sizing methods used for drill bits
Definition

fractional

letter

numbered

metric

Term
Where do reamers do all their cutting
Definition
on the chamfered end
Term
What is another name for a center drill
Definition
combination drill countersink
Term
What are straight fluted drill bits used for
Definition
soft materials
Term
What part of a drill bit forms the chisel edge
Definition
the web
Term
Where is the land located on a drill bit
Definition
between the flutes and the margin
Term
Where do you measure the diameter of a drill bit
Definition
across the margins
Term
Where do you measure the diameter of a drill bit
Definition

point

body 

shank

Term
What is a drill jig used for
Definition
to hold the workpiece and locate the cutting tool
Term
Where should the t-bolt be located when clamping a workpiece
Definition
as close as possible to the workpiece
Term
What is a drill drift used for
Definition
to remove tools from sleeves and spindles
Term
What is a drill socket used for
Definition

to decrease the size of the taper when the taper on a tool is too large for the spindle

 

Term
What is a drill sleeve used for
Definition

to increase the size of the taper when the taper on a tool is too small for the spindle

 

Term
What RPM should be used when spotfacing as compared to drilling a hole
Definition
1/4 what is used for drilling
Term
What RPM should be used when countersinking a hole compared to drilling
Definition
1/4 the drilling speed
Term
What is the most common included angle for a countersink
Definition
82 degrees
Term
Should a reamer be removed from a hole before or after the spindle is stopped
Definition
before
Term

What size should a hole be drilled before reaming a 3/8"

hole

 

Definition
23/64"       1/64" undersize
Term

What RPM should be used when reaming a hole compared to drilling a hole

 

What feed rate should be used

 

Definition

1/2 the rpm

 

twice the feed rate

Term
What safety precaution should you use if drilling a horizontal hole with a magnetic base drill
Definition
use a safety chain in case of power failure
Term
Which drill press can the head be raised with power
Definition
radial arm
Term
Which of the 3 main drill presses have/has only power feed
Definition
upright and radial arm
Term
Which part of a drill press does not revolve
Definition
the quill
Term
Which of the 3 main drill presses have/has only manual feed only 
Definition
sensitive
Term
What are the 3 main types of drill presses
Definition

sensitive

upright

radial arm

Term
What kind of taper is used to hold a drill chuck to its shank
Definition
jacobs
Term
A Morse taper has a taper of:
Definition
approx. 5/8"taper per foot
Term
how is an engine lathe sized
Definition
by the swing and distance between centers
Term
What are the 5 main parts of an engine lathe
Definition

Bed

Headstock

Quick change gear box

Carriage

Tailstock

 

Term
Where is the feed reverse lever located on an engine lathe
Definition
head stock
Term

What is the purpose of change gears on an engine lathe

 

Definition
Transfer motion from the spindle to the quick change gear box
Term

What are the 3 common methods for mounting work holding devices on an engine lathe

 

Definition

Threaded spindle nose

Taper and key spindle nose

Cam lock spindle nose

Term
How is feed rate expressed on a Metric engine lathe
Definition
millimeters per revolution of the spindle
Term
What transmits motion from the quick change gear box to the carriage  on an engine lathe
Definition
lead screw and feed rod
Term
What are the three main parts of the carriage on an engine lathe
Definition

Saddle

Cross slide

Apron

 

Term
What provides perpendicular movement to the spindle axis on an engine lathe
Definition
cross slide
Term
Where is the tool post commonly mounted on an engine lathe
Definition
compound rest
Term
Where is the feed change lever located on an engine lathe
Definition
on the apron
Term
What allows tools to be mounte in the tailstock spindle
Definition

morse taper

 

Term
Where would a live center be located
Definition
head stock spindle
Term
Where would a dead center be located
Definition
tail stock spindle
Term
What is a microset adjustable centre used for
Definition
cutting slight tapers
Term
What is the purpose of lathe dogs
Definition

To apply a driving force to the workpiece when turning between centers

 

Term
What type of lathe chuck uses a scroll plate
Definition
3 jaw universal
Term
What is the main purpose for using a collet chuck
Definition

Small work that requires high RPM

 

Term

[image]

What type of work holding device is being shown

Definition
face plate
Term
What is the taper per foot for a solid mandrel
Definition
.006" to .008" taper per foot
Term
Where is the size stamped on a solid mandrel
Definition
on the large end
Term
What are mandrels used for
Definition

Hold workpieces by their bore

 

Term
What are threaded mandrels used for
Definition

Holding workpieces with internal threads

 

Term
What are steady rests used for
Definition

support the end of a workpiece when a tail stock center can not be  used

    

support the middle of a workpiece when deflection or vibration is a problem

 

Term
What is a follower rest used for
Definition

Support long thin workpieces to minimize deflection

 

Term
Where is a steady rest mounted
Definition
to the lathe bed
Term
Where is a follower rest mounted
Definition
to the lathe saddle
Term
What are two types of taper attachments
Definition

plain

telescoping

Term
Name three ways to cut a taper on an engine lathe
Definition

Compound rest

Tail stock offset

Taper attachment

Form tool

 

Term

[image]

What style tool holder is being shown

What hand is it

Definition

American style

 

Right hand

 

Term
What are the purposes for knurling
Definition

Grip

Appearance

Fits

 

Term

Which would be more wear resistant:

High Speed Steel or Carbide

Definition

Carbide

 

Term
What are two types of high speed steel
Definition

molybdenum

tungsten

Term
What kind of grinding wheel would be used for carbide cutting tools
Definition
silicon carbide
Term
What kind of grinding wheel would be used for high speed steel
Definition
aluminum oxide
Term
What does tool signature refer to
Definition

The effective angles when the tool is in the tool holder

 

Term

 

What cutting tool angle will cause the chip to be thinner and longer 

Definition

Side cutting edge angle

 

Term
What cutting tool angle provides clearance between the end of the tool and workpiece
Definition
end cutting edge angle
Term
What cutting tool angle allows the tool to advance along the work
Definition
side relief
Term
Where are relief angles found on a cutting tool
Definition
below the cutting edge
Term
What cutting tool angles affect the shape of the chip and the direction the chips flows
Definition
rake angles
Term

What cutting tool angle makes the cutting tool stronger

  • a positive rake angle
    or                                                  
  • a negative rake angle
Definition
negative rake angle
Term

What cutting tool angle would be better when dealing with an interrupted cut

  • positive rake angle
    or                                              
  • negative rake angle
Definition
negative rake angle
Term
What rake angle must a threading tool have
Definition

zero rake

or

neutral rake

Term
Three ways to align a tail stock are:
Definition

Alignment marks

Taking trial cuts and measuring

Using a parallel bar and checking with a dial indicator

 

Term

An american tool holder with a left hand offset is used to hold

  • a left hand tool
  • a right hand tool
Definition
a right hand tool
Term
The angle of keeness on a lathe tool is formed by what other two angles
Definition

Side relief and side rake

 

Term
An ANSI milling machine taper has a taper of:
Definition
3 1/2 " taper per foot
Term

A Morse taper is an example of a:

 

Self holding taper

 

Self releasing taper

Definition
self holding taper
Term
Three scales used on lathe taper attachments to set the taper are:
Definition

taper per foot

 

included angle

 

centerline angle

 

Term
When the workpeice feeds against rotation of cutter(Up Milling) it is called
Definition
conventional milling
Term
When workpiece feeds w/ rotation of cutter (Down Milling)  it is called
Definition
climb milling
Term
what method of milling causes the chip to start thin and get progressively thicker?
Definition
conventional
Term
What is a downside of conventional milling?
Definition
-Needs more horsepower
-Surface Finish is not as good
-Need Rigid Setup because it tends to lift the workpiece off the table
Term
what is needed to climb mill?
Definition
a backlash eliminator
Term
What type of milling reduces breakout? and burnishes the workpiece
Definition
climb milling
Term
What milling cutter leaves surface perpendicular to the spindle
Definition
face mill
Term
Where does most of the cutting taking place on face mills
Definition
the periphery
Term
Where is a keyway and keyseat?
Definition

Keyway in a bore, keyseat on a shaft

 

Term
What type of cutter leave run-outs when cutting a slot
Definition
side milling cutter
Term
What kind of endmill do you use for blind slots?
Definition
center cutting end mill or slot drill
Term
When cutting keyseats, what tool allows you to cut up to shoulder?
Definition
end mills
Term
What does the 3-4 digits on a woodruff key mean?
Definition

First Two Digits x 1/32= Width
Second Two Digits x 1/8= Diameter

 

Term
Where is the depth of a keyseat measured from?
Definition
from the flats
Term
What is the usable length of a keyseat?
Definition

Length which does not include any run out or radius left by the cutter on either end

 

Term
Ways of centring the shaft under the cutter
Definition

paper method

edge finder

Term
Name the 4 types of knee and column milling machines
Definition

UniversalHorizontal

Plain Horizontal

Standard Vertical

Ram Vertical

 

Term

What makes a

 milling machine universal

Definition
table can swivel
Term
What part gives a knee and column milling machine gives transverse movement
Definition
the saddle
Term
Which part of a knee and column milling machine gives longitudinal movement
Definition
the table
Term
What does an arbour support attach to on a knee and column milling machine
Definition
the over arm
Term
Where should a dial indicator be attached when aligning the table on a universal knee and column milling machine
Definition

To the table, indicating on the machine column

 

Term
What would be the calculated feed rate using a 6" cutter rotating at 300 rpm and having 8 teeth and a chip load of 0.005 inches per tooth
Definition

12 inches per minute

 

(300 x 8 x 0.005)

 

Term
Where should you run the dial when aligning a vise on a milling machine table
Definition

The solid jaw of the vise              

 

Term

What style of arbour would be used with the cutter shown

[image]

Definition

c type arbor

 

Term
What prevents the knee, saddle or table from over travel
Definition
limit stops
Term
What size is a #810 woodruff cutter
Definition

1/4" wide and 1 1/4" diameter              

 

Term

Identify the style of arbor shown

[image]

Definition
A style
Term
the four main parts of the carriage are
Definition

apron

saddle

cross slide

compound rest

Term

feed rate on a lathe is expressed in

 

how is the feed rate set on a lathe

Definition

inches or mm per revolution of the spindle

 

with the quick change gear box

Term
the main disadvantage of using the tail stock offset method for cutting tapers on a lathe is
Definition
the centers become misaligned and have to be realigned
Term
the split (half) nut on a lathe is used for
Definition
threading
Term
when a work piece needs to be centered to run true which work holding device should be used
Definition
4 jaw independent chuck
Term
what needs to be done if the lathe cuts an undesired taper and the workpiece is larger toward the head stock
Definition
adjust the tailstock away from you
Term

on the lathe you should never part off between centers

 

true

or

false

Definition
true
Term
on a lathe with a direct reading cross slide dial, to reduce the diameter by 1/8" the tool will advance into the workpiece by how much
Definition
1/16"
Term

the feed reverse lever on a lathe controls what

 

where is the feed reverse lever is mounted

Definition

longitudinal and cross feed

 

on the apron

Term
irregular shaped workpieces being held in a lathe should use what work holding device
Definition
4 jaw independent chuck
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