Learning Task 1: Match the name of the tool in column A to its
meaning at column B. Write the letter of your answer in the Answer
Column.
Column A
1. Wire stripper
2. Long Nose v
3. Philip
4.Pilers
5.Flat Screwdriver
Column B
A.A versatile tool that has long,
tapering jaws with pointed tip.
Among their many uses are
gripping, bending, and cutting small
gauge wire. They can reach into
tight places that are inaccessible to
other types of pliers.
B. Used to loosen or tighten screws
with a head that has a "plus" shaped
to its grooves.
C. A tool with wedge-shaped flat
Screwdriver
tip, used to tighten or loosen screws
that have a straight linear notch in
their heads.
D.It is a hand tool used to hold firmly, possibly developed from tongs used to handle hot metal in Bronze Age Europe. They are also useful for bending and compressing a wide range of materials.
E.It is capable of stripping the end portions of an electric wire in order to connect them to other wires or to terminals.
Answers
Explanation:
for an hour to get 20 minutes of use, 20 minutes of charge can run the tool for an
hour. Lithium-ion batteries also have a constant discharge rate. The power output
remains constant until the battery is depleted, something that nickel-cadmium
batteries also lack, and which makes the tool much more versatile. Lithium-ion
batteries also hold a charge for a significantly longer time than nickel-cadmium
batteries, about 2 years if not used, vs. around 4 months for a nickel-cadmium
battery.
Drill press
Fig. A drill press.
A drill press (also known as pedestal drill, pillar drill, or bench drill) is a fixed style
of drill that may be mounted on a stand or bolted to the floor or workbench. A drill
press consists of a base, column (or pillar), table, spindle (or quill), and drill head,
usually driven by an induction motor. The head has a set of handles (usually 3)
radiating from a central hub that, when turned, move the spindle and chuck
vertically, parallel to the axis of the column. The table can be adjusted vertically
and is generally moved by a rack and pinion; however, some older models rely on
the operator to lift and reclamp the table in position. The table may also be offset
from the spindle's axis and in some cases rotated to a position perpendicular to
the column. The size of a drill press is typically measured in terms of swing.
Swing is defined as twice the throat distance, which is the distance from the
center of the spindle to the closest edge of the pillar. For example, a 16-inch drill
press will have an 8-inch throat distance.
A drill press has a number of advantages over a hand-held drill:
less effort is required to apply the drill to the workpiece. The movement of the
chuck and spindle is by a lever working on a rack and pinion, which gives the
operator considerable mechanical advantage.
the table allows a vise or clamp to position and lock the work in place making the
operation secure.
the angle of the spindle is fixed in relation to the table, allowing holes to be drilled
accurately and repetitively.Pin chuck, a small hand-held jewellers drill
Hammer Drill
The hammer drill is similar to a standard electric drill, with the exception that it is
provided with a hammer action for drilling masonry. The hammer action may be
engaged or disengaged as required.
Rotary hammer drill
The rotary hammer drill (also known as roto hammer drill or masonry drill) is an
electric drill type dedicated to drilling holes in masonry. The rotary hammer drill is
a percussion drill that uses a weight to create the impact force on the masonry bit.
Generally, the drill chuck of the rotary hammer drill is designed to hold SDS drill
bits. Some styles of this drill are intended for masonry drilling only and the
hammer action cannot be disengaged. Other styles allow the drill to be used
without the hammer action for normal drilling.