The difference between all kind drills

The working principle of the electric drill is that the motor rotor of the electromagnetic rotary type or electromagnetic reciprocating type small capacity motor does magnetic field cutting to do the work operation, and drives the gear to increase the power of the drill bit through the transmission mechanism, so that the drill bit scrapes the surface of the object and better penetrates the object.

Electric drills can be divided into 3 categories: hand drills, impact drills, hammer drills

1. Hand drill: the minimum power, the scope of use is limited to drilling wood and when an electric cone is used, some hand drills can be changed into special tools according to the use, the use and model are more

2. Impact drill: The impact mechanism of the impact drill has two kinds of canine tooth type and ball type. Ball impact drill is composed of moving disc, fixed disc, steel ball and so on. The moving disc is connected to the spindle by thread and has 12 steel balls; the fixed disc is fixed to the casing with pins, and with 4 steel balls, under the action of thrust, 12 steel balls roll along the 4 steel balls, so that the carbide drill bit produces a rotational impact movement, which can drill holes in brittle materials such as bricks, blocks, and concrete. Take off the nail, so that the fixed disc rotates with the moving disc, does not produce impact, and can be used as an ordinary electric drill.

3. Hammer drill (Rotary hammer): can drill holes in a variety of hard materials, the widest range of use.

The price of these three kinds of electric drills is arranged from low to high, and the functions are also increased, and the selection needs to be combined with their respective scope of application and requirements.

The difference between an electric drill, an impact drill, a hammer drill and an Demolition Hammer.

The hang drill is simply based on the motor to drive the transmission gear to increase the strength of the drill rotation, so that the drill bit in the metal, wood and other substances to do scraping form hole penetration.

When the impact drill works, there is an adjustment knob at the drill bit chuck, which can be adjusted in two ways: drilling and impact drilling. However, the impact drill uses the gears on the inner shaft to beat each other to achieve the impact effect, and the impact force is far less than that of the electric hammer. It can also drill reinforced concrete, but the effect is not good.

Hammer drill (electric hammer) is not the same, it is the use of the bottom motor to drive two sets of gear structure, one set to achieve it drilling, and the other set to drive the piston, just like the engine hydraulic stroke, generating a strong impact force, accompanied by the effect of drilling. Strength can split stones and divide gold.

The Demolition Hammer is to let the motor drive the swinging of the flinging hammer to do the bouncing form of operation, so that the pickaxe has the effect of chiseling the ground. The hydraulic pump pickaxe is the use of the gas pressure transmitted by the air compressor to drive the pump hammer in the electric pickaxe to bounce back and forth, thus producing the effect of the pickaxe chiseling the ground, but the electric pickaxe is only chiseled, and its pickaxe does not rotate.

All in all, the electric drill can only drill, and the impact drill can also have a slight hammering effect. Hammer drills can drill and higher hammer strikes, while Demolition Hammer can only do hammering and cannot drill.