Overview and types of power tools - Yuhuan Jingde Power Tool Co., Ltd.

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Overview and types of power tools

1895, Germany successfully developed the world's first DC exercise. With cast iron, steel shell in the hole, drill more than three phase motor speed, frequency conversion (device) can not break exercise 3000r/ minutes.
1914, a single-phase series motor drive power tools, automotive 10000r/ minute speed rate.
In 1927, the 150~200Hz intermediate frequency power frequency electric tools, it has both single-phase series excitation motor speed, and high frequency three-phase motor, it has the advantages of simple and reliable structure, but because of the current power supply, the daily use of frequency constraints. In 1960s, with the development of production technology, the charging power supply without battery power tools. But because of expensive, slow progress.
In the mid 1970s, because of low prices, rechargeable batteries, this time also shortened the power tools, in Europe and the United States, Japan is widely used. Electric tools, the original iron Aluminum Alloy shell after use.
In 1960s, thermoplastic engineering plastic power tools and applications, and the realization of a double insulated electric tools, maintenance of safe use of electric tools. Due to the development of electronic technology, also appeared in 1960s electronic tube power tools. The silicon controlled electronic circuit components and other power tools, the switch button is pressed to adjust the speed of information in different depth, can be used for electric tools, should be based on different things (such as material, size of hole diameter and so on), choose a different speed.
Power tools, can be divided into metal cutting tools, power tools, power tools, assembly of railway power tools. Common drill, grinder starting electric wrench, electric screwdriver, hammer and drill, concrete vibrator, planer.
1: main specifications of the power has been 4, 6, 8, 10, 13, when, 19,23 years old, aged 32, 49mm, etc., the number of 38 years refers to the strength of the steel 390N/ mm diameter drill. For non-ferrous metals, plastics and other materials specifications larger drilling diameter than the original 30-50%.
2 and grinding plate mill, electric or process. Direct electric grinder, electric angle grinding wheel.
3 electric wrench, electric screwdriver: used for loading and unloading threaded connections. Influence mechanism of planet gear and ball groove of electric spanner transmission mechanism. M8, M20M12 specifications such as M30, M37, M24M16******,,,,,,, etc.. Electric screwdriver uses tooth clutch transmission or gear drive mechanism, specifications and M3M1 have a square meter, M6. M4 gun,
4 hammer and percussion drill, brick and concrete building components: for burrowing, slotting, shaving. With the expansion screw, can improve the use of various pipes, machine tool installation speed and quality.
5 for casting concrete vibrator: reinforced concrete foundation, reinforced concrete concrete, the elimination of pores, increase the time. The high frequency interference including electric direct coupled vibration is driven by motor driven eccentric block composed of 150Hz or 200Hz rotary motor if power supply.
6 machine used to cut wood, wood or small bench can also use the Taiwan taxi. Planer rotor shaft of motor drive belt.

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