Q:What's the role of carbon brushes in electric tools?

Carbon brush specific function1. the external current (excitation current) is added to the rotor by carbon brush (input current);2., the static charge on the big shaft is introduced into the earth (carbon brush) through the carbon brush (output current);3. lead the main shaft (ground) to the protection device for rotor ground protection and measure the positive and negative voltage of the rotor;

Q:What material does the power tool housing fit?

The hammer and drill: used for concrete, brick and building components on drilling, slotting, dehairing. Combined with expansion bolt, various pipelines can be improvedInstallation speed and quality of machine tools.Concrete vibrator: used for pouring concrete foundation and reinforced concrete members, tamping concrete to eliminate air holes and increase strength. Among them, electric straightThe high frequency disturbing force of the combined vibrator is driven by the motor to rotate the eccentric block, and the motor is powered by 150Hz or 200Hz intermediate frequency power supply.The planer: used for planing wood or wood structure, mounted on the bench can be used as a small bench plane. The planer cutter shaft by the motor shaft through the belt drive

Q:How about plug wires and cables for power tools?

Class I tools are common type power tools with a rated voltage of over 50 volts. Class I tools not only rely on basic insulation but also include an additional safety measure in the protection against electric shock. The method is that the accessible conductive parts and protection has been installed in the fixed line in the (ground) wire together, make accessible conductive parts in the basic insulation does not become damaged in the charged body. Plug for three pin plug type tool.

Q:What's the name of an electric tool for riveting screws into wood? Not understand!

An electric drill can be used! But it can't adjust the torque! There are four types of professional screw twisting tools!

Q:What other tools are there for the furniture except the pistol hole?

It is mainly used in construction, decoration, furniture industry, opening for objects or objects in the past, also known as hammer in some industries.Well, there are more drilling tools on the market now.

Q:Which is good between pneumatic tools and power tools?

Pneumatic tools are the mainstream trend, pneumatic tools more suitable for long time work, rather than power tools, permanent fever, and even burned out the internal parts, pneumatic tools can be seen more secure. Power tools initial investment is low, but long-term use of energy consumption is higher, and tool maintenance and replacement costs are higher, and pneumatic tools more environmentally friendly, long-term use cost is much lower than the electric.

Q:What kind of power tools are hand drills? 1, 2 or 3?

You can see the cable plug, the aluminum shell is inserted three I tools, is grounded, the aluminum shell and some II tools, because it has a plastic insulation between the stator and the aluminum shell, so it is the installation of two wire plug.

Q:What devices must be available for all hand held electric tools?

Hand held electric tools, insulation measures are in good condition, must be equipped with qualified leakage protection device, forbid to change the power cord and plug, use special flow switch box.

Q:How are hand powered tools classified into class I, class II, class III?

Class I protection against shock of the product depends not only on the basic insulation of the equipment, but also on additional safety precautions. The method is to connect the electrically conductive parts that may be touched with the protective wires in the installed stationary lines so that the accessible, electrically conductive parts are not electrified in the event of basic insulation damage. Such products are: hand-held power tools, mobile daily appliances, mobile mechanical and electrical equipment.

Q:What's the difference between a flashlight and an electric screwdriver?

A flashlight is a drilling tool powered by alternating current or direct current batteries. It is a hand-held electric tool.The main components of a drill are a drill chuck, an output shaft, a gear, a rotor, a stator, a casing, a switch and a cable.Electric torch (pistol drill) -- a tool used for drilling metal, wood, plastics, etc.. When equipped with positive and negative reverse switch and electronic speed regulating device, it can be used as electric screwdriver. Some models are equipped with rechargeable batteries, which can work normally within a certain period of time without external power supply.