What are the classifications of electric drills and the differences between them?

Electric drill can be divided into 3 categories: electric drill, impact drill, hammer drill.

1, electric drill: the smallest power, the use of the scope is limited to drilling and when a power cone, part of the electric drill can be changed into a specialized tool according to the purpose, the use and more models.

2, impact drills: impact drill impact mechanism has a dog tooth type and ball type two kinds. Ball type impact drill by the moving disk, fixed disk, steel ball and other components. Dynamic disk connected to the spindle through the thread, and with 12 steel ball; fixed disk using the pin fixed in the casing, and with 4 steel ball, under the action of the thrust, 12 steel ball rolling along the 4 steel ball, so that the tungsten carbide drill bit to produce a rotary impact movement, can be drilled in brittle materials such as bricks, blocks, concrete and so on. Take off the pin, so that the fixed disk rotates with the moving disk, does not produce impact, can be used as an ordinary electric drill.

3, hammer drill (electric hammer): can be drilled in a variety of hard materials, the widest range of use.

These three kinds of drill price from low to high arrangement, the function also increases, the choice needs to be combined with their respective scope of application and requirements.

Differences between electric drills, impact drills, hammer drills and electric picks

Electric drill is only single by motor driven transmission gears to increase the force of the drill bit rotation, so that the drill bit in the metal, wood and other materials to do scraping form of piercing.

Impact drill work in the drill chuck at the adjustable knob, adjustable drill and impact drill two ways. But the impact drill is the use of the gears on the inner shaft to jump each other to achieve the impact effect, the impact force is far less than the electric hammer. It can also drill reinforced concrete, but the effect is not good.

Hammer drill (electric hammer) is different, it is the use of the bottom of the motor to drive two sets of gear structure, a set of realization it drill, while the other set is driven piston, as if the engine hydraulic stroke, resulting in a powerful impact, accompanied by the effect of drilling. The power can crack the stone and split the gold.

The electric pickaxe is to let the motor drive the flinging weight to do the bounce form operation, so that the pickaxe has to produce the effect of chiseling the ground. Hydraulic pump pick is the use of air compressor transmission of gas pressure to drive the electric pick in the pump hammer bouncing back and forth, so as to produce the effect of pickaxe chiseling the ground, but the electric pickaxe is only chiseling, its pickaxe head does not rotate.

In short, the electric drill can only drill alone, the impact drill can drill can also have a slight hammering effect. The hammer drill drills and hammers at a higher level, while the electric pick only hammers and does not drill.