Electric Drill

Drilling machine using electricity as power. Is an electric tool in the conventional products, but also the largest demand for power tools products. The number of production and marketing accounts for 35% of China's power tools. The main specifications of electric drill has 4 6, 8, 10, 13, 16, 19, 23, 32, 38, and 49mm, digital refers to the tensile strength of the drill maximum diameter of 390N/mm2 steel drill. For non-ferrous metals, plastics and other materials, the largest diameter of the hole can be larger than the original size of 30 ~ 50%.

The drill can be divided into 3 categories: electric drill, impact drill, hammer drill. 1 hand drill: the minimum power, the scope is limited to the use and when a electric screwdriver drill for wood, part of drill can be changed according to the use of special tools, more applications and models 2 impact drill: the impact mechanism of impact drill with ball type two and type. Electric hand drill . Ball type impact drill is composed of a moving plate, plate, steel ball etc.. Brake disc is connected with a main shaft through threads, and with 12 balls; fixing by pins fixed on a casing, and a 4 ball, in the role of thrust, 12 ball 4 ball rolling along, the hard alloy bit to produce rotary impact motion, can drill a hole in the brick, brick, concrete and other brittle materials. Take off the fixed pin, disc rotates with the drive plate, no impact, can be used as an ordinary electric drill. 3 hammer (hammer): drill holes in a variety of hard materials, the most widely used.