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How are power tools classified?

2020-12-30

Power tools are mainly divided into metal cutting power tools, grinding power tools, assembly power tools and railway power tools. There are vibrator, electric hammer, electric drill, electric hammer, electric tool. ① Electric drill: the main specifications are 4, 6, 8, 10, 13, 16, 19, 23, 32, 38, 49mm, etc. the number refers to the maximum diameter of the drill bit drilled on the steel with tensile strength of 390n / mm. For nonferrous metals, plastics and other materials, the maximum drilling diameter can be 30-50% larger than the original specification. ② Electric planer: it is used for planing wood or wood structural parts. It can be installed on the bench and also used as a small planer. The cutter shaft of the electric planer is driven by a motor shaft through a belt. ③ Electric spanner and electric screwdriver: used for loading and unloading threaded connectors. The transmission mechanism of electric wrench is composed of planetary gear and ball spiral groove impact mechanism. Specifications include M8, M12, M16, M20, M24, M30, etc. The electric screw driver adopts tooth clutch transmission mechanism or gear transmission mechanism, and the specifications are M1, M2, m3, M4, M6, etc. ④ Electric hammer and impact drill: used for drilling, slotting and roughening of concrete, brick wall and building components. Combined with expansion bolt, the installation speed and quality of various pipelines and machine tools can be improved. ⑤ Electric grinder: a tool for grinding with a grinding wheel or disc. There are direct electric grinder and electric angle grinder.

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