Hammer Drills can also be called a roto
hammer or a rotary hammer drill; these devices are drills with a rotating
hammering action. They work by providing a hammering action, a short rapid
hammer thrust, which pulverizes hard brittle material, thus producing more
efficient and quicker drilling with much less effort. These drills are usually
lower powered units, whilst higher powered devices are generally known as
rotary hammers and are used to deliver much higher impact forces.Dry
Wall Hammer
There are many different makes and models,
prices can range from just a few pounds for a simple model which may be ideal
for the home DIY enthusiast, up to many hundreds of pounds for more serious use
and applications i.e.; building industry and automotive industry.
Hammer drills can be either cordless or
mains powered. Mains powered drills require some type of external power supply,
either mains power or power generated by some type of electrical generator
which are usually mobile.Stubby Claw
Hammer
Most of today's drills allow use of both
the hammer action and the rotatory action separately or even a combination of
both, depending on the material to be drilled. They were invented in 1975 by
James D Smith, who was a stonemason. These types of drill are very efficient
for drilling holes in brick, concrete, sandstone and some types of rock. The hammering
action chips away/ breaks up the masonry and the drill flutes transport the
debris away.Machinist's
Hammer
Hammer drills can have several different
features incorporated into them. These features may include:
Switchable hammer action ( the drill may be
set from normal action to hammer action )
Clutch (this enables a slipping action
should the drill bit encounter any difficulties; for example, get stuck or jam
up).
Adjustable clutch; this enables the correct
torque when using the drill for driving screws.
Reversible switch
Cordless power hammer drills carry their
own power supply in the form of a battery which is usually fitted onto the end
of the drills handle. With today's technology and the advancement in battery
design and performance, cordless power tools have become a very attractive
alternative to the more conventional mains powered power tool and can provide
many hours of use. This has made them extremely popular in the public and
commercial markets.
Another type of hammer drill uses a rotary
action, and these types of drill are known as rotary hammer drills. The rotary
type uses a piston mechanism instead of a special clutch which allows them to
deliver a much more powerful hammer blow.
Hammer drills use a specially designed
clutch which allows it to punch (hammer) and spin at the same time.
If you are in need of this service check
out our product pages, they contain many companies that specialise in this.
John Cheesman writes about Hammer Drills. Visit the Businessmagnet product page
for details and suppliers of Hammer Drills.