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Talking about the types of electric tools
①Electric drill: The primary specifications are 4, 6, 8, 10, 13, 16, 19, 23, 32, 38, 49mm, etc. The numbers refer to the maximum diameter of a drill drilled on steel with a tensile strength of 390N/mm. For non-ferrous metals, plastics and other materials, the maximum drilling diameter can be 30-50% larger than the original specifications.
②Electric grinder: something that uses a grinding wheel or a grinding disc for grinding. There are straight electric grinders and electric angle grinders.
③Electric wrench and electric screwdriver: used for loading and unloading threaded connections. The transmission arrangement of the electric wrench is composed of planetary gear and ball spiral groove impact arrangement. The specifications are M8, M12, M16, M20, M24, M30, etc. The electric screwdriver chooses the clutch transmission arrangement or gear transmission arrangement, and the specifications are M1, M2, M3, M4, M6, etc.
④ Electric hammer and electric percussion drill: used for drilling, grooving, and roughening concrete, brick walls and building components. The use of contact expansion bolts can advance the speed and quality of various pipelines and machine tools.
⑤Concrete vibrator: used to compact concrete when pouring concrete foundations and reinforced concrete components to eliminate air holes and advance strength. Meanwhile, the high-frequency disturbance power of the electric direct-coupled vibrator is formed by the rotation of the electric motor, which is powered by a 150Hz or 200Hz intermediate frequency power supply.
⑥Electric planer: used for planing wood or wooden structural parts. It can also be used as a small table planer when installed on a bench. The knife shaft of the electric planer is driven by the motor shaft through a belt.