For example, the Power Tools Carbon Brush can be used
Into 2 ~ 4 groups of dc motor rotor coil, electric tool is the main function of carbon brush can make different coil in different rotation Angle on electricity, to ensure that the permanent magnet fitness pole of the stator and the rotor magnet instead, drive the rotor rotation. It ACTS as an electric current. Now everyone knows the Power Tools Carbon Brush.
Power Tools Carbon Brush:
The external current is added to the rotor of rotation through the Power Tools Carbon Brush.
2. The electrostatic charge on the large axis is introduced by the Power Tools Carbon Brush to the earth, which is what we say (the output current).
3. In the commutator motor, the brush also ACTS as a commutator. In summary, it changes the direction of the current.
4. The main shaft (ground) is drawn to the protective device for the rotor grounding protection and the measuring rotor positive and negative voltage.
Electric tools are there in most of the motor carbon brush, it is the important component parts of the machine, it is used for motor commutator, etc., its conductive, thermal conductivity, lubrication performance is strong, and contains a certain mechanical strength and commutation spark, the characteristics of and the types of brush and with the development of motor industry, more and more.
But what if the car's electric tools are not exposed to the carbon brush? In fact, as long as the Power Tools Carbon Brush is replaced early, and its price is low, the replacement is convenient, do not wait for the commutator magnetic field to change, that is late.
In fact, poor contact as long as on the outside of the copper rectifier with sand paper no. 100, use glue to the joint cement, according to the electric tool on the carbon brush, use hand motor in a few minutes will be smooth and commutator close union.
As long as the commutator is changed in this way, the problem of carbon brush contact with electric vehicle is reduced.
Electric tools carbon brush is not lighter is better in the operation, Power Tools Carbon Brush current under rating, spring pressure is normal, slip ring (or commutator) smooth, electric tools flat carbon brush contact surface lubrication, wear uniform, Power Tools Carbon Brush will be not in a blaze. Electric tools by the quality of carbon brush is by the influence of homework, a damaged Power Tools Carbon Brush, brush can bring a lot of trouble in the work time for homework, motor brush quality how to distinguish. The Power Tools Carbon Brush is a long and vulnerable part. His quality is mainly based on the following points:
1. Finish (with bright light)
2. Conductivity (the smaller the internal resistance should be)
3. Hand feeling (smooth and smooth by hand)
Only the commutator or the motor of the slip ring has Power Tools Carbon Brush, common ac asynchronous motor is the cage structure, no Power Tools Carbon Brush. The motor is the abbreviation of the motor, which is the motor. Motor can be divided into dc and ac motor, dc motor due to the rotation of the rotor, need according to the coil position change and constantly switching current in the constant magnetic field direction, so the dc motor coil needs a commutator.
The motor (motor) used in the electric drill is AC series motor.
In addition to induction ac induction motors. Other motors are available, as long as the rotor has a commutator ring.
The role of Power Tools Carbon Brush in motor:
The external current (excitation current) is added to the rotating rotor (input current) through the Power Tools Carbon Brush.
2. The electrostatic charge on the large shaft is introduced to the earth by the Power Tools Carbon Brush (the carbon brush of the grounding electric tool) (the output current).
The shaft (earth) is brought to the protective device for the rotor grounding protection and the measuring rotor positive and negative voltage
Change the direction of the current (in the commutator motor, the brush also serves as a commutator)
The commutator consists of a brush and a commutator ring, and the Power Tools Carbon Brush is one of the brushes. Due to the rotation of the rotor, the brush will always rub with the commutator ring, and in the moment of the commutation, the electric spark will be burned, so the brush will be the vulnerable part of the dc motor.