Power tools are mainly divided into metal cutting power tools, grinding power tools, assembly power tools and railway power tools. Common electric groundbreaking has electric drill, electric grinder, electric wrench and electric screwdriver, electric hammer and impact drill, concrete vibrator, electric plane.
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 drill bit drilled on the steel with tensile strength of 390N/mm. For non-ferrous metals, plastics and other materials, the maximum drilling diameter is 30 ~ 50% larger than the original specification.
② Electric grinder: grinding tools with grinding wheel or grinding disc. There are direct electric grinder and electric Angle grinder.
Electric wrench and 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. The specifications are M8, M12, M16, M20, M24, M30, etc. The electric screwdriver adopts the toothed clutch drive mechanism or the gear drive mechanism. The specifications include M1, M2, M3, M4, M6, etc.
④ Electric hammer and impact drill: used for concrete, brick walls and building components on the hole, slot, hair. Combined with expansion bolts, it can improve the installation speed and quality of various pipelines and machine tools.
⑤ Concrete vibrator: used to pour concrete foundation and reinforced concrete members when compacting concrete, in order to eliminate pores, improve strength. Among them, the high frequency disturbance power of the electric direct-connected vibrator is formed by the motor driving the eccentric block to rotate, and the motor is powered by 150Hz or 200Hz medium frequency power supply.
⑥ Electric plane: used for planing wood or wood structural parts, mounted on the platform can also be used for small platform planing. The cutter shaft of the electric plane is driven by the rotating shaft of the motor through the belt.
