High Durability Two batteries power tools drill

High Durability Two batteries power tools drill
Principle:
The working principle of the electric drill is that the motor rotor of the electromagnetic rotary or electromagnetic reciprocating small-capacity motor performs magnetic field cutting and work operation, and the operating device is driven by the transmission mechanism to drive the gear to increase the power of the drill bit, so that the drill bit scrapes the surface of the object and penetrates the object better.
Application:
1. Construction and Industry
It is widely used in the reinforcement of building beams, slabs, columns, walls, etc., decoration, wall installation, brackets, railings, billboards, air conditioner outdoor units, guide rails, satellite receiver elevators, steel structure workshops, etc.
2. Medical applications
(1) Dental:
At the beginning of the 20th century, a wall-mounted three-bend dental drill appeared, with a speed of 4000 r/min, and some even reached 10,000 r/min. The rope wheel-driven three-bend dental drill that we are still widely used is its derivative. thing.
(2) Otology:
Julius Lempert, the father of modern otology, pioneered the use of electric drills for ear surgery in New York in 1938 to treat chronic ear diseases and reduce the incidence of facial nerve damage. But the electric drills of the time were difficult to control and were very noisy. Modern electric and air drills greatly increase the rotational speed and enhance the cutting capacity. The use of fast cutting drills, diamond drills and irrigation-suction systems enables otologists to quickly complete accurate surgical dissections and greatly reduce operating time.
3. Marine flexible rod drill
The utility model relates to a new type of marine drilling equipment, which is mainly used for coring and sampling of the bottom layer of the seabed, and exploration of marine geology and minerals. First, it was successfully developed by the French Institute of Petroleum (IFP). It was initially used to drill 300-meter and 500-meter boreholes on land, and later cooperated with the Soviet Union to drill oil wells up to 3,000 meters deep. In 1965, it was successfully tested at sea for the first time, and the drilling depth reached 2,500 meters. ECSM offshore flexible rod coring drill is to install the flexible rod, electric drill, coring tube, drill bit and submersible pump on the same frame, lower it to the seabed with wire rope, and supply power from the ship surface through the cable to realize remote control drilling. It can drill up to 100 meters in water depth of 500 meters and take out 3.5 inches of core. The machine weighs about 10 tons.
Production
Electric drill products used at home (known as DIY abroad) have low requirements for service life, work efficiency, processing accuracy, etc., and the number of products is large, accounting for about 70~80% of the total electric drill products; another 30~20%. Electric drill products are professional tools, that is, products commonly called "industrial electric tools" in China, have higher technical requirements, including machining accuracy, reliability of use (such as one failure time, number of damages), service life, and performance level. (such as torque, coaxiality), etc. are higher than household products.
Double insulation technology provides a safe, reliable and advanced insulation structure to prevent electric shock accidents for the use of hand-held power tools, which is the development trend of power tool safety technology. Since the 1960s, my country's power tool manufacturing industry has begun to study the application of double insulation in power tools, and trial-produced product prototypes such as electric drills. In 1998, the products of double insulation power tools accounted for more than 90% of the industry's annual output.
Accessories
1. Drill chuck
The drill chuck is the main accessory of electric drill power tools, accounting for 10%-15% of the cost of the electric drill. Common key drill chucks, the development and production of light, hand-tight drill chucks have also achieved remarkable results.
An important indicator of hand-tightening and self-tightening drill chucks is that the output torque of the drill chuck can be more than 90% greater than its input torque.
High-end drill chucks are mainly used in high-demand professional power tools, bench drills and other occasions, and the demand for high-performance self-locking drill chucks and heavy-duty wrench drill chucks is increasing. The high-performance self-locking drill chuck has the characteristics of high precision, high technology content, high added value and high efficiency, and is mainly matched with the impact drill above 850W and the 24V DC impact drill in professional power tools.
As the quality and performance of electric tools are improving, drilling operations are required to be performed reliably under vibration and impact conditions. Therefore, the matching drill chuck is required to have a locking function, which can ensure that the drill bit and other tools held by the electric drill are not loose during use. take off. The global demand for self-locking drill chucks is expected to be about 19 million by 2010.