Title: Power Tools
1Power Tools Equipment
2Compressed Air Systems
- Air Compressor-
- A machine by which outside air is drawn in,
compressed into a tank or cylinder, and stored,
so that its expansion or release may be utilized
as a source of pneumatic power.
3Compressed Air Systems
- The recommended maximum operating air pressure
for a shop is 150psi.
4Compressed Air Systems
- Quick Disconnect Couplings
- Quick disconnect couplings are designated as
connecting devices designed to permit easy and
immediate connection and separation of air or
fluid for pneumatic or hydraulic lines without
the need for tools.
5Compressed Air Systems
- Air Pressure Regulator
- A pressure regulator automatically sets and
controls the compressors operating pressure.
Regulators are used to allow high-pressure supply
lines or tanks to be reduced to safe and/or
usable pressures for various applications.
6Typical Compressed Air System
Compressor
7Air Tools
- Pneumatic tools or air tools are tools driven by
compressed air supplied by a compressor. - Air tools need to be periodically lubricated to
minimize wear and to assure maximum service life. - Air wrenches are designed to remove and install
metal fasteners, rapidly.
8Air Tools
- Air impact rotation is typically controlled by a
lever or button. - Since the air tool has a great amount of power or
torque, the technician must use great care not to
damage bolts, nuts, or fasteners when using an
air wrench.
9Air Tools
- Air Ratchet-
- An air ratchet is used to work in hard-to-reach
places where other tools might be difficult or
impossible to use. The drive-end of an air
ratchet is typically 3/8 inch square, however,
they also come in ¼ or ½ sizes as well.
The air ratchet, like the air impact, does not
accurately tighten bolts or nuts, so a torque
wrench must be used for final tightening to
assure correct torque is applied to the bolts or
nuts.
10Air Tools
- Air Hammer
- An air hammer is a device that uses highly
pressurized air to drive a hammer into a work
piece for shaping, scoring, or cutting. Air
hammers have variable tips. For shaping and
plenishing, a hammer tip is used. For scoring or
cutting, a chisel tip is used. Whatever tip is
used, it will be pounded thousands of times per
minute into the targeted object, so operators
must take care and use caution. The air hammer
must be placed directly against the work surface
to prevent the driven bit from flying out of the
end of the tool and causing personal injury or
damage. These tools are very noisy, so ear
protection is a must.
11Air Tools
- Solvent Gun-
- A solvent gun is used to clean parts that do not
fit into a solvent tank. Care must be taken with
the solvent used, not to contaminate the
environment. - Blow Gun-
- An air-powered blow gun is used to dry off or
clean out the inside of hard to reach areas of
parts. Caution must be used with the blow gun to
prevent personal injury from air embolism. This
happens when the air is injected into or under
the skin. Only safety tipped nozzles should be
used on blow guns.
12Air Tools
- Air Drill-
- Features and Benefits Lightweight, compact size
is easy to handle, and provides full power in
forward and reverse drilling applications.
Aluminum body with rubber handle grip. Easy
control trigger for operator convenience and
variable speed control. - Rotary files and abrasive disks can be used with
the air drill at slow speeds to clean heavy
gasket deposits and de-burr rough metal edges
easily.
13Electric Tools
- Bench Grinder-
- Usually has two wheels, a grinding stone and a
wire wheel. It may be used for sharpening cutting
tools such as lathe tools or drill bits.
Alternatively it may be used to roughly shape
metal prior to welding or fitting. - Wire brush or buffing wheels are often mounted in
place of the grinding wheels and are used to
clean or polish work-pieces.
14Electric Tools
- Bench Grinder Safety Rules
- 1. The tool rest (or work rest) should be mounted
slightly below the center of the grinding wheel
with less than 3 mm clearance from the wheel.
This prevents the work from jamming between the
tool rest and the wheel. - 2. Grinding wheels designed for steel should not
be used for grinding softer metals, like
aluminum. The soft metal gets lodged in the pores
of the wheel and expand with the heat of
grinding. This can dislodge pieces of the
grinding wheel. - 3. Wire brushes require particular attention for
the safety of the operator and bystanders as the
metal wires may become dangerous projectiles as
they could bind with the object being brushed and
so throw it away with great energy. - 4. The machine needs to be securely mounted to a
pillar or a bench to be used safely and
effectively, often with an emergency stop switch
or pedal fitted close by the machine, for use in
emergencies.
15Electric Tools
- Drill Bits and the Drill Chuck
- Drill bits are cutting tools used to create
cylindrical holes. Bits are held in a tool called
a drill, which rotates them and provides axial
force to create the hole. They are commonly made
of high-speed steel, while some specialized drill
bits can be made of high-carbon steel or
titanium. The drill bits are clamped into the
drill chuck using the chuck key to tighten it.
The drill motor is usually sized by the largest
diameter drill bit that will fit into the drill
chuck. Common chuck sizes include ¼, 3/8, and
½.
16Electric Tools - Parts of a Drill Press
A bench-top or stationary power tool used to spin
a drill at a controlled speed, a controlled
location, and to a controlled depth. The drill
press gives you precision and controlled drilling.
17Electric Tools
- 5 Drill Press Safety Rules
- 1. Be careful not to drill into the vises or
drill press table. - 2. Use vises clamped to the drill press table if
there is the chance that your work piece might
spin when drilling. - 3. Only change drill press speed while the drill
press is running. - 4. Do not run the drill speed too fast. If you
hear any squeaking, the drill speed is too fast
or you are not plunging fast enough. Ask for help
if you are not sure what speed to use. - 5. Be sure to clean up the drill press table top,
base, and surrounding floor immediately when
finished with the machine.
18Hydraulic Tools
- Hydraulic tools use high pressure fluid to exert
the necessary forces. Examples of Automotive
Tools that are hydraulic include - Floor Jack
- Transmission Jack
- Bottle Jack
- Vehicle Hoist
- Engine Hoist
19Hydraulic Tools
Floor Jack
Bottle Jack
Transmission Jack
Engine Hoist
Vehicle Hoist
Hydraulic Press
20Hydraulic Tools
- Floor Jack Used to lift vehicles by placing
under the frame, suspension arms, or specific
lift points. - Transmission Jack Used to raise and lower
transmissions during clutch jobs and transmission
repairs. It uses specially designed attachments
to hold the transmission securely to the jack and
allows the unit to be tilted as necessary to
facilitate transmission installation. - Bottle Jack Has many varied lifting
applications. - Vehicle Hoist Used to raise vehicles in order
to make repairs under the vehicle faster and more
convenient. - Engine Hoist Used to remove and install engines
or other heavy engine parts, such as intake
manifolds or cylinder heads. - Hydraulic Press used to remove, reassemble, and
re-install bearings, gears, shafts, and other
subassemblies requiring great controlled pushing
or pulling force.
21Other Shop Equipment
- Arbor Press is similar to a hydraulic press but
uses a screw type jack to exert force.
22Other Shop Equipment
- Jack Stands Never work under or around a
vehicle that is not properly supported by jack
stands!
23Other Shop Equipment
- Engine Stand Once the engine has been removed
from the vehicle, it can be mounted securely to
an engine stand to facilitate working on the
engine.
24Other Shop Equipment
- Cold Solvent Tank contains a cleaning solution
used to sanitize automotive parts and
subassemblies before repair and reinstallation.
25Other Shop Equipment
- Pressure Washer - A pressure washer is an engine
powered device that uses high-pressure water to
remove deposits of dirt and grease from
automotive assemblies and subassemblies.
26Other Shop Equipment
- Oxy-Acetylene Torch - An Oxy-Acetylene torch is
used to weld metals. Welding metal results when
two pieces are heated to a temperature that
produces a shared pool of molten metal. The
molten pool is generally supplied with additional
metal called filler. Filler material depends upon
the metals to be welded. - In Oxy-fuel cutting, a cutting torch is used to
heat metal to kindling temperature. A stream of
oxygen then trained on the metal combines with
the metal which then flows out of the cut (kerf)
as an oxide slag - Oxy-fuel welders can also be used for heating and
bending metals. By controlling the rate of cool
down different hardness of metal can be achieved.
27Other Shop Equipment
28Other Shop Equipment
- Battery Charger - An electronic device that
provides a controlled voltage and current to a
battery to maintain the battery in a fully
charged state
CAUTION! Car batteries that are being charged,
give off hydrogen gas which is flammable and
explosive. Keep open flame and sparks away from
battery! Always unplug charger before
disconnecting clamps from battery!
29Other Shop Equipment
- Drop Light - provides light when working under
the hood or under a vehicle.
30Other Shop Equipment
- Jumper Cables can be used to start a vehicle
with a dead battery by connecting to another
vehicle that has a good battery.
31Other Shop Equipment
- Creeper - is used by a technician to lay on when
working under a vehicle, and should always be
stood up out of the way when not in use.
32Other Shop Equipment
- Tool Carts or Utility Carts are used to hold a
limited number of tools for easy access for a
specific task.
33Other Shop Equipment
- Fender Covers - protect the finish and visual
appearance on any vehicle being worked on.
34QUESTIONS?
- CHECK THE TEXTBOOK IF YOU CAN NOT FIND SOME OF
THE ANSWERS! - THEN CHECK WITH THREE OTHER STUDENTS TO FIND THE
ANSWERS! - FINALLY, CHECK WITH THE INSTRUCTOR
- Sincerely, Mr. Bloom