Author：DanielDate：2022-8-17
Electric tools are mainly divided into metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools. Common electric tools include electric drills, electric grinders, electric wrenches and screwdrivers, electric hammers and impact drills, concrete vibrators, and electric planers.
① Electric drill: The main specifications include 4, 6, 8, 10, 13, 16, 19, 23, 32, 38, 49mm, etc. The number refers to the diameter of the drill bit used to drill holes on steel with a tensile strength of 390N/mm. The drilling diameter for materials such as non-ferrous metals and plastics can be 30-50% larger than the original specifications.
② Electric planer: used for planing wood or wooden structural components, and can also be used as a small planer when mounted on a platform. The cutting shaft of the electric planer is driven by an electric motor shaft through a belt.
③ Electric wrench and electric screwdriver: used for loading and unloading threaded connectors. The transmission mechanism of an electric wrench consists of a planetary gear and a ball spiral groove impact mechanism. The specifications include M8, M12, M16, M20, M24, M30, etc. The electric screwdriver adopts a tooth embedded clutch transmission mechanism or a gear transmission mechanism, with specifications such as M1, M2, M3, M4, M6, etc.
④ Hammer and impact drill: used for drilling, slotting, and roughening holes in concrete, brick walls, and building components. Combined with the use of expansion bolts, the installation speed and quality of various pipelines and machine equipment can be improved.
⑤ Electric grinder: a tool used for grinding with a grinding wheel or disc. There are direct electric grinding machines and electric angular polishing machines.
⑥ Concrete vibrator: used to compact concrete when pouring concrete foundations and reinforced concrete components to eliminate air pockets and improve strength. The high-frequency disturbance force of the electric direct connected vibrator is formed by the motor driving the eccentric block to rotate, and the motor is powered by a 150Hz or 200Hz intermediate frequency power supply.
