How are electric drills classified:
Electric drills can be divided into three categories: drill drivers, impact drills, and hammer drills. You need to choose according to your actual needs and their respective scope of use.
1. Hammer drill:
This type of drill can produce a strong impact, accompanied by the effect of the drill. It can split stones and divide gold. And also drill holes in a variety of hard materials and has the widest application range.
2. Drill driver:
Some electric drills can be changed into special tools according to their purposes, and there are many uses and models. The power is the smallest, and the scope of use is limited to drilling wood and acting as an electric screwdriver.
3. Impact drill:
It can be used for natural stone or concrete, but the impact force is far less than that of electric hammer, and can be used as ordinary electric drill. There are two types of impact mechanisms for impact drills: dog tooth type and ball type. Use the gears on the inner shaft to jump to each other to achieve the impact effect.
Correct use of electric drill:
1.Wear protective glasses when drilling holes in pig iron castings to protect your eyes. Wear a protective mask when working with the face up. The bit holder should be properly installed.
2.The drill bit is in a hot state during operation, so be careful to burn your skin. When drilling a hand-held electric drill with a diameter of 12mm or more, a pistol drill with a side handle should be used.
3.Standing on a ladder or working at a height should take measures for falling from a height, and the ladder should be supported by ground personnel.
Electric drill bit replacement:
Normally, the replacement method of the above three electric drills is the same, but the drill chuck on the drill bit on them is divided into a self-tightening drill chuck and a hand-tightening drill chuck. The electric drill with a self-tightening drill chuck is used to replace the drill bit. At the same time, we need to hold the drill chuck with one hand, and turn on the reverse switch of the electric drill at the same time, so simply replace the original drill bit and use the same method to put the drill bit up. The most important thing is that the switch is forward and reverse. In order to dial back, if it is a hand-tight drill chuck, it can be replaced by opening the drill chuck key.