Manufacturing Lab
Milling cutters are sharp. Protect your hands with a cloth or _____ when handling them.
gloves
The _____ tooth pattern is also recommended for most nonferrous metallic materials.
hook
Face milling cutters over 6" (150 mm) in diameter are usually of the _____ type.
inserted tooth
The _____ is almost identical to the hand reamer except that the shank has been designed for machine use.
jobber's reamer
The process of forming horizontal or diamond-shaped serrations on the circumference of the work is called ______.
knurling
Stop the machine before making adjustments and _______.
measurements
The surface being machined is parallel with the periphery of the cutter in ______ milling.
peripheral
The _______ punch has a sharper point than the center punch.
prick
The _____ type saw has a back-and-forth cutting action.
reciprocating
The pitch of a thread can be determined with a(n) _____________.
screw pitch gage
Straight layout lines are drawn with a(n) _________.
scriber
In general, use the _____ arbor possible that permits adequate clearance between the arbor support and the work.
shortest
The _____ tooth pattern is preferred for cutting aluminum, magnesium, copper, and soft brass.
skip
When sawing (slitting) thin stock, the _____ diameter cutter that provides adequate clearance should be used.
smallest
The device used to permit a drill with a taper shank too large to fit the spindle opening is called a(n) _____.
socket
A(n) _____ expansion reamer provides rigidity and accuracy not possible with conventional expansion reamers.
solid
The _____ tooth pattern is best suited for cutting most ferrous metals.
standard
_____ shank drills are used with a chuck.
straight
Long flat surfaces can be checked for trueness with a(n) _______.
straightedge
A(n) __________ is the flat granite or cast iron surface used for layout and inspection work.
surface plate
_____ shank drills fit directly into the drill press spindle.
taper
The _____ is fitted to many lathe carriages. It meshes with the lead screw and is used to indicate when to engage the half-nuts to permit the thread cutting tool to follow exactly in the original cut.
thread dial
Internal and external grinding can be done on the lathe with a(n) _____.
tool post grinder
Large circles and arcs are drawn with a(n) _________.
trammel
Before removing a machine's guards or covers, be sure that all power to the machine is _____.
turned off
A(n) ______ end mill is used when the cutter must be fed into the work like a drill.
two-flute
Blind keyseats or slots are made with a(n) _____ end mill.
two-flute
The cutting speed for a high-speed reamer is approximately _____ that for a similar-sized drill.
two-thirds
The vernier-type tool for measuring angles is called a(n) ____________________?
universal vernier bevel protractor
A(n) _____ scale on the spindle head of a vertical milling machine ensures accurate angular settings.
vernier
Cutting fluids are used to _____.
- Cool the drill - Improve the finish of a drilled hole -Aid in chip removal
A groove is cut at the point where a thread is terminate. It is cut to the depth of the tread and serves to:
- Provide a place to stop the threading tool after cutting -Permits a nut to be run up to the end of the thread -Terminate the thread
List the three basic types of metal-cutting saws.
- Reciprocating, continuous band-type, and circular type
The spiral grooves in a drill body are used to ____.
- help form the cutting edge of the drill point - curl chips fro easier removal - form channels through which the chips can escape the hole
Treat all small cuts and skin punctures as potential sources of infection. Which of the following should be done?
-Clean -Apply antiseptic and cover with a bandage -Report injury to instructor
A(n) ______ can be used to locate the first hole of a series to be drilled on a vertical milling machine.
-Edge finder -Wiggler -Centering Scope
Knurling is commonly done to _____.
-Provide a gripping surface -Change the appearance of work - Increase the work's diameter (squeezes material into the diamonds, raising the highest diameter)
On the table saw, how far above the work should the blade be when cutting?
1/8 of an inch.
_____ teeth per inch for cutting on the majority of light-duty machines, where work is limited to small sections and moderate to light feed pressures.
10 and 14
The included angle of a drill point sharpened for general drilling is _____ degrees.
118°
What is the minimum number of people that must be in the shop for you to work?
2
_____ teeth per inch for cutting large sections or readily machined materials.
4
_____ teeth per inch for cutting harder alloys and miscellaneous cutting.
6
The compound rest is set at ______ when cutting threads to permit the cutting tool to shear the material better than if it were fed straight into the work.
60°
What number do you call in case of an emergency?
911
What is a blind hole?
A hole that does not go all the way through the work.
What is "three-tooth rule" for sawing?
A minimum of three teeth must be cutting at all times.
When using the table saw, what do you use to push the material by the blade?
A push stick.
What is a spur gear?
A spur gear is a toothed wheel that has teeth that run straight across the face and are perpendicular to the sides. The teeth are shaped so contact between the mating gears is continually maintained while in operation.
Where do you place your work on the belt and disk sander?
Against the rest.
An air gage employs air pressure to measure deep internal openings and hard-to-reach shaft diameters. It operates on the principle of ____________.
Air pressure leakage between the plug and hole walls.
What do you use to push a piece through the bandsaw?
Always use a push piece.
Where should the guards be set on the bandsaw?
As close to the workpiece as possible.
Some lathes come equipped with a(n) ______ allowing for slower speeds with greater power.
Back Gear
Cutting speeds can be increased 300% to 400% by using _____ cutting tools.
Carbide
The tip of a cutting tool to cut a Sharp V thread is sharpened using a(n) _____ to check that it is the correct shape.
Center Gauge
Before work can be mounted between centers, a(n) ______ must be drilled at each end of the stock.
Center Hole
What should you do before starting a machine?
Check to see if it is clear by operating it manually.
What tasks do you need to complete after you are done working?
Clean up your area, wipe down the machines, and put all your tools away.
What is the name of the operation used to cut a chamfer in a hole to receive a flat-head screw?
Countersinking
What should be done to protect the lathe from the abrasive dust and grit created during grinding operations?
Cover the bed and moving parts with a heavy duty cloth.
What instrument is used to check for eccentricity?
Dial indicator
_____ mills are the cutters normally used on a vertical milling machine.
Face and end
T/F: The two basic types of a dial indicator are as follows: discrete and unbalanced.
False
_____ is used to indicate the distance that the cutter moves in one revolution of the work.
Feed
Drills are made from _____.
HSS and carbon steel
In most lathe operations, you will be using a single-point cutting tool made of ______.
HSS.
After tightening the collet on the milling machine, what do you do with the wrench?
Immediately remove it.
Boring is a(n) ______.
Internal machining operation in which a single-point cutting tool is used to enlarge a hole.
Gage blocks are often referred to as _______________ blocks.
Jo
What should you wear on your hands when using solvents?
Latex gloves
What is wrong with using a pencil to make layout lines on metal?
Lines will rub off and would be too wide
When using the drill press, do you ever hold the work with your hands?
No, always use a vise.
Can you use compressed air to clean up the machines?
No.
Do you ever use a taper shank tool in a drill chuck?
No.
Do you ever use the cord to move the hand power saw?
No.
When using the parting tool, the spindle speed of the machine is about _____ the speed used for conventional turning.
One-third
What do you do for 5 minutes after you are done in the shop?
Perform general cleaning around the shop.
Large drills require a considerable amount of power and pressure to get started. They also have a tendency to drift off center. These conditions can by minimized by first drilling a(n) _____ hole.
Pilot
What should you remove or secure before you work on the machinery?
Rings, necklaces, long hair, and loose clothing.
A drill works by ____.
Rotating against material with sufficient pressure to cause penetration
What does "gang milling" mean?
Several cutters being used at the same time to machine a job
What do you have to do to the cylinder valves when the welding job is done?
Shut them off.
Before changing a blade or making an adjustment on the hand saw, what do you do?
Shut-off the power.
What do you do to a machine before cleaning?
Shut-off the power.
What is the procedure if you need to remove tools from the laboratory?
Sign the check-out sheet near the door.
_____ is the operation that machines a circular spot on a rough surface for the head of a bolt or nut.
Spotfacing
What do you do if the drill binds in a hole on the drill press?
Stop the machine and turn the spindle backwards by hand.
Drills that are used on the lathe are fitted with ______ shanks.
Straight and taper
The size of a lathe is determined by the ______ and the length of the bed.
Swing
Automatic turning centers, also known as ______ machines can produce tiny precision parts in quantity.
Swiss-type
On the milling machine, what do you check in relation to the cutter before cutting metal?
The direction of rotation.
The largest piece that can be turned between centers is equal to ______.
The length of the bed minus the space taken up by the headstock and the tailstock.
What type of protection do people within the welding area have to wear for their eyes?
The recommended shades.
Who do you have to get approval from before using welding equipment?
The shop staff.
On the lathe, how far do you let the toolbit overhang the toolholder?
The shortest amount possible to avoid chatter.
In or up-convectional milling, _____.
The work is fed into the rotation of the cutter
The lathe operates on the principle of ______.
The work rotating against the cutting tool, which is controllable
What will happen to your laboratory privileges if you do not clean up after yourself?
They will be suspended and you will not pass the class.
T/F: Optical flats employ light waves as a measuring standard.
True
T/F: A micron is one-thousandth part of a meter.
True.
T/F: A ring gage is used to check whether diameters are within the specified tolerance range.
True.
T/F: One-millionth part of a standard inch is known as a "microinch".
True.
Round stock is usually supported on _________ for layout and inspection.
V-Blocks
Angular lines that must be very accurate should be laid out with a(n) _________.
Vernier protractor
When possible, what should you use instead of solvents?
Water based cleaners.
When do you need to wear safety glasses in the shop?
Whenever you are in the laboratory.
Should you remove flammable liquids from the welding area prior to welding?
Yes
What happens if you do not listen to the laboratory technician?
You lose your laboratory privileges and fail the course.
After you turn the power off on the drill press, how do you stop the spindle from turning?
You never use your hand and let it stop on its own.
After tightening the chuck on the lathe, what do you do with the chuck key?
You remove it immediately.
When chips or strings form on the lathe during an operation, how do you remove them?
You use a brush or tool and never try to remove them with your hand.
How do you remove chips from the work area?
You use a brush so you do not cut yourself.
A mandrel is usually pressed into the work with a(n) ______.
arbor press
If you are not sure about something in the laboratory, what should you do?
ask
The power hacksaw only cuts on the _____ stroke.
back
Work that is too large or too heavy to be turned in the horizontal position is turned on huge machines called vertical lathes or _____.
boring mills
There are times when a shaft is unsuitable as a bearing surface and connot be used with a steady rest. When this occurs, a(n) _____ can be used so the shaft can be supported with the steady rest.
cat head
The center of round stock can be found quickly with the ______ and rule of a combination set.
center head
The operation used to prepare a hole for a fillister or socket head screw is called _____.
counterboring
When drilling a pilot hole, the hole should be as large as or slightly larger than, the width of the _____ of the drill point.
dead center
The most accurate way to align a vise on a milling machine is with a(n) _____.
dial indicator
Circles and arcs are drawn on work with a(n) _________.
divider
The _____ should be used frequently when sharpening to ensure a correctly sharpened drill.
drill point gage
The surface being machined is parallel with the cutter face in _____ milling.
face
Polishing is an operation used to produce a(n) _____ on the work.
fine finish
