How the electric drill works
Electromagnetic rotary or electromagnetic reciprocating small capacity motor rotor to do magnetic field cutting work, through the transmission mechanism to drive the operation device, drive gear to increase the power of the drill, so that the drill scraping object surface, better hole through the object.
Type of electric drill
Electric drill type: electric drill can be divided into 3 categories: hand electric drill, impact drill, hammer drill. According to the speed, there are infinitely variable speed and fixed speed difference. These 3 kinds of electric drill price from low to high arrangement, function also increases accordingly, choose to need to combine respective applicable scope and requirements.
Hand electric drill
Power minimum, the scope of use is limited to drilling wood and when an electric screwdriver, part of the hand electric drill can be changed according to the use of special tools, uses and models more.
Impact drill
The impact mechanism of electric drill has two kinds of canine type and ball type. Using the gear on the inner shaft to beat each other to achieve impact effect, can be used for natural stone or concrete, but the impact force is far less than the electric hammer, can be used for ordinary electric drill.
Hammer drill
Can drill holes on a variety of hard materials, the widest range of use. Creates a powerful impact force, accompanied by a drill effect. Strength divides stone into gold.