classification

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

1. hand drill: small power, use range is limited to drill wood and when the electric screwdriver, drill part can change 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. The ball impact electric drill consists of a moving plate, a fixed plate, a steel ball and so on. 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. The driven plate can rotate with the moving disk without impact, and can be used as an ordinary electric drill.

3. hammer (hammer): drill holes in a variety of hard materials, the use of a wide range of.

The price of these 3 kinds of electric drills is arranged from low to high, and their functions are also increased. The selection of them needs to be combined with their respective scope of application and requirements.

The difference between electric drill, impact drill, drill and the electric hammer

Drill only by motor drives the drive gear to increase the strength of the drill bit rotation, do scraping in metal, wood and other forms of perforated material.

There are two ways of adjusting drill knob, adjustable drill and percussion drill when drilling percussion drill. But the impact of drilling is the use of internal gear to achieve mutual beat of impact, the impact force is far less than the hammer. It can also drill reinforced concrete, but it doesn't work very well.

Hammer (hammer) is not the same, it is to use the bottom two sets of motor driven gear structure, a realization of it drill, and another one is to drive the piston, a hydraulic engine stroke, resulting in a strong impact force, along with drilling results. Strength can split rocks into gold.

Electric motor drives is to make the swinging of the swing weight do bounce run, make pickaxe have gouge ground effect. The hydraulic pump pick is the gas pressure using the air compressor transmission pump is driven by the electric hammer in moving back and forth, resulting in pickax hit the ground effect, but only the Diangao chisel, it does not turn head.

In a word, the electric drill only can drill, the impact drill can drill, also can have the slight hammering effect. Hammer drill drill and high hammer, hammer and hammer only do not drill.

application

1. architecture and Industry

Widely used in the construction of beams, plates, columns, walls and other reinforcement, decoration, wall installation, support, railings, billboards, outdoor air conditioning units, rails, satellite receivers, elevators, steel plant buildings and other installation.

2. medical applications

(1) dentistry:

In early twentieth Century, the three curved arm hanging type dental drill, its speed up to 4000r/min, some even up to the speed of 10000r/min, we are still in the three curved arm tooth drill rope drive is widely used and its derivatives.

(2) ear:

The father of modern otology Julius Lempert, 1938 in New York to use the drill for ear surgery to cure chronic disease and reduce the incidence of facial nerve injury rate. But the electric drill was difficult to control, and the noise was great. Modern electric and pneumatic drill can greatly improve the speed, strengthen the cutting ability, fast cutting drill, diamond bit and flushing system makes use of suction aurist can quickly complete surgical anatomy, shorten the operation time.

3. marine soft pole drill

A new type of offshore drilling equipment, which is mainly used for coring sampling in seabed sediment layer, and explores Marine Geology and mineral resources. First developed by the French Petroleum Research Institute (IFP), it was first drilled for 300 meters and 500 meters of land drilling, and later drilled with the Soviet Union to drill oil wells up to 3000 meters. Successful drilling at sea in 1965, drilling water up to 2500 meters. ECSM marine soft rod coring drill is soft rod, electric drill, coring pipe, drill and submersible pump installed on the same frame, wire rope for it to the bottom of the sea, and realize the remote control by deck power drilling through the cable. It can drill 100 meters deep in the depth of 500 meters and take out 3.5 inch core. The machine weighs about 10 tons.