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: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?

As we all know, a hand drill is an AC power supply or a DC battery powered drilling tool. It is a kind of hand held power tool.

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:What power tools are used as cage birds?

An electric drill or a small bench drill, drill speed is the best because of the speed change drill, drill hole spacing and easy consumption. If you want to do with special accessories can also change the distribution of wood milling, milling machine, special safety and easy to do.

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

As the mechanical component, the electric screw driver can work without the electric batch power supply, and the batch power supply provides the energy and the related control function for the electric screwdriver. Drive the motor. Since the parameters of the motor are different, the speed will be different when the power of the batch power supply is the same.

Q:What safety problems should we pay attention to when using electric drills or hand-held power tools?

All of the wires must be more tough and durable rubber covered wire. When the wire enters the shell of the motor, the rubber ring is used to protect the insulation layer of the wire from being worn out.

Q:What kind of material does the power tool case have?

In 1895, the German overtone produced the world's first direct current drill. The outer shell is made of cast iron and can drill holes in the steel plate 4mm. Then there was a three-phase power frequency (50Hz) electric drill, but the motor speed failed to break through the 3000r/min. In 1914, there was a single-phase electric motor driven by a series of exciting motors, and the motor speed was over 10000r/min. In 1927, the power supply frequency of intermediate frequency electric tool 150~200Hz, it not only has the advantages of high speed single-phase series motor, and has the advantages of simple structure, reliable three-phase motor, but because the need if current supply is limited.