Power tools are mainly divided into metal cutting power tools, grinding power tools, assembly power tools and railway power tools. Common electric tools include 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 the 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 plane: used for planing wood or wood structural parts, installed on the bench can also be used as a small table plane. The knife shaft of the plane is driven by the motor shaft through the belt.
③ Electric wrench and electric screwdriver: used for loading and unloading threaded connectors. The transmission mechanism of the electric wrench is composed of a planetary gear and a ball spiral groove impact mechanism. Specifications are M8, M12, M16, M20, M24, M30 and so on. Electric screwdriver adopts tooth clutch drive mechanism or gear drive mechanism, specifications are M1, M2, M3, M4, M6, etc.
④ Electric hammer and impact drill: used in 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.
④ Electric hammer and impact drill: used in 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.
⑥ Concrete vibrator: used to pour concrete foundation and reinforced concrete components when compaction concrete, to eliminate pores, improve strength. The high frequency disturbance power of the electric direct-connected vibrator is formed by the rotation of the eccentric block driven by the motor, and the motor is powered by the 150Hz or 200Hz medium frequency power supply
