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Q:
Explain 6 correct ways to install DC geared motor

  • A:

    DC geared motors are also called geared motors. They are usually assembled and assembled by professional DC geared motor manufacturers. There are applications in various machinery industries, and the installation and use of DC geared motors are directly related to the operating effect of DC geared motors, so the installation of DC geared motors must comply with the installation standards and technical specifications. Next, the editor of Longhui explained in detail the 6 correct methods of installing DC geared motors.


    1. Make sure that the motor and the reducer are intact before installation, and strictly check whether the dimensions of the parts connected to the motor and the reducer match. Here are the dimensions and matching tolerances of the positioning boss of the motor, the input shaft and the groove of the reducer.

    2. Unscrew the screw on the dustproof hole on the outside of the reducer flange, adjust the PCS system clamping ring so that the side hole is aligned with the dustproof hole, insert the hexagon socket to tighten it, and then remove the motor shaft key.

    3. Connect the motor and reducer naturally. When connecting, you must ensure that the concentricity of the output shaft of the reducer and the input shaft of the motor are consistent, and the outer flanges of the two are parallel. Like the inconsistency, it will cause the motor shaft to break or the reducer gear to wear. In addition, it is strictly forbidden to hit with a hammer during installation to prevent excessive axial or radial forces from damaging the bearings or gears. Be sure to tighten the mounting bolts before tightening the tightening bolts.


    DC Geared Motor

    4. Before installation, wipe the anti-rust oil of the motor input shaft, positioning boss, and reducer connection area with gasoline or zinc-sodium water. The purpose is to ensure the tightness of the connection and the flexibility of operation, and to prevent unnecessary wear.

    5. Before the motor is connected to the reducer, the key groove of the motor shaft should be perpendicular to the tightening bolt, and the mounting bolts at any diagonal position should be screwed on first, but do not tighten, then install the other two diagonal positions. Finally, tighten the four mounting bolts one by one.

    6. Finally, tighten the bolts. All tightening bolts need to be fixed and checked with the torque wrench according to the indicated fixed torque data.

    The above is the content compiled by Shenzhen Longhui Xiaobian about "the 6 correct ways to install DC geared motors in detail". If you want to learn more about DC geared motors, you can click the relevant keywords and the webpage will automatically jump Related content pages, I hope this article can help everyone.

    Reproduced please explain is provided by the editor of Shenzhen Longhui (cmhrdwja.icu)

Q:
Brushless DC motor_Brushless DC motor principle

  • A:

    The brushless DC motor is composed of a motor body and a driver, and is a typical mechatronic product. The brushless motor refers to a brushless and commutator (or slip ring) motor, also known as a commutatorless motor. When the motor was born in the nineteenth century, the practical motor produced was a brushless form, that is, an AC squirrel cage asynchronous motor, which has been widely used. However, asynchronous motors have many insurmountable shortcomings, resulting in the slow development of motor technology. Transistors were born in the middle of the last century, so DC brushless motors using transistor commutation circuits instead of brushes and commutators came into being. This new type of brushless motor is called an electronic commutated DC motor, which overcomes the defects of the first generation of brushless motor.


    DC Countless Motor Principle:

    The brushless DC motor is composed of a motor body and a driver, and is a typical mechatronic product. The stator winding of the motor is mostly made of three-phase symmetrical star connection, which is very similar to the three-phase asynchronous motor. A magnetized permanent magnet is attached to the rotor of the motor. In order to detect the polarity of the motor rotor, a position sensor is installed in the motor. The driver is composed of power electronics and integrated circuits. Its function is to accept the start, stop, and brake signals of the motor to control the start, stop, and brake of the motor; to receive position sensor signals and forward and reverse signals to control the inverse The on-off of each power tube of the bridge produces continuous torque; it accepts speed commands and speed feedback signals to control and adjust the speed; provides protection and display and so on.


    DC motors have fast response, large starting torque, and have the ability to provide rated torque from zero speed to rated speed. However, the advantages of DC motors are also its disadvantages, because DC motors must produce constant rotation at rated load. The torque performance requires the armature magnetic field and rotor magnetic field to be maintained at a constant 90 °. This requires carbon brushes and commutators. Carbon brushes and commutators generate sparks and toner when the motor rotates. Therefore, in addition to causing damage to components, the use occasions are also limited. AC motors do not have carbon brushes and commutators. They are maintenance-free, rugged, and widely used. However, in order to achieve the performance equivalent to DC motors, complex control technology can be used. Nowadays, the rapid development of semiconductors has accelerated the switching frequency of power components, which has improved the performance of drive motors. The speed of the microprocessor is also getting faster and faster, which can realize the control of the AC motor in a rotating two-axis rectangular coordinate system, and appropriately control the current component of the AC motor in the two axes to achieve similar control to the DC motor and have the equivalent of the DC motor. performance.


    In addition, many microprocessors have built the functions necessary to control the motor into the chip, and the size is getting smaller and smaller; like analog-to-digital converter (adc), pulse wide modulator, pwm) ... etc. DC brushless motor is an application that controls the commutation of AC motor electronically, and obtains an application with similar DC motor characteristics without missing from DC motor mechanism.


Q:
Miniature Geared Motor

  • A:

    Definition of geared motor: 1: Low vibration, low noise, high energy saving, high-quality forged steel material, steel cast iron box body, and high-frequency heat treatment of gear surface.

    2: After precision processing to ensure positioning accuracy, all these constitute the gear reduction motor of the gear transmission assembly, which is equipped with various types of motors, forming a mechatronics, which fully guarantees the quality characteristics of the product.

    3: The product adopts a series and modular design concept and has a wide range of adaptability. This series of products has extremely many motor combinations, installation positions and structural schemes. Any speed and various structural forms can be selected according to actual needs.

    Geared motor types:

    First, single-phase induction motor

    Capacitive induction motor can be used for continuous operation, high power and low noise.

    Second, reversible motor

    With instantaneous switching forward and reverse function, almost no inaccurate steering switching occurs. Because it adopts balanced winding method and built-in simple brake mechanism. It can switch forward and reverse in an instant.

    Three, electromagnetic brake motor

    It can brake in a short period of time, and starts at 2 to 3 revolutions when no load is applied. It exerts safe braking performance.

    Fourth, speed control motor

    With the speed controller, it has a wide adjustable speed range: 90 ~ 1400RPM. There is a speed sensor inside and feedback control is implemented. Therefore, the frequency of the power supply changes and its specified number of revolutions never changes.

    Five, three-phase motor

    The speed of the three-phase motor can be adjusted by adding an inverter; the speed of the DC motor can be adjusted by changing the voltage applied to achieve the speed adjustment function.


    Advantages of geared motors:

    1.High speed regulation accuracy

    Second, the speed range is wide, and the output speed ratio can be changed from 1: 3 to 1: 1800;

    Third, high strength and long life. Fourth, the speed is convenient.

    Fifth, it can work continuously, and can run in the forward and reverse directions, the operation is stable, the performance is stable, and the noise is low.

    Six, fully sealed, low environmental requirements. 7. The mechanism is compact and small in size.

    Eight, using high-quality aluminum alloy die-casting, beautiful appearance, light weight, and never rust. Nine, good adaptability. Wanxin reducer can be combined with reducer to achieve low speed stepless speed change.

Q:
What is a DC motor?

  • A:

    Motors are devices that convert electrical energy into mechanical energy. It is made by using the phenomenon of energized coils rotating in a magnetic field and distributed to various users. Motors are divided into DC motors and AC motors according to different power sources. Most of the motors are AC motors, which can be synchronous motors or asynchronous motors (the magnetic field rotation speed of the motor stator and the rotor rotation speed do not maintain synchronous speed). The motor is mainly composed of a stator and a rotor. The direction in which a conducting wire is forced to move in a magnetic field is related to the direction of the current and the direction of the magnetic induction line (the direction of the magnetic field). The working principle of the motor is that the magnetic field acts on the current to force the motor to rotate.


    Application

    The most widely used of all kinds of motors are AC asynchronous motors (also known as induction motors). It is easy to use, reliable in operation, low in price, and solid in structure, but has a low power factor and difficult speed adjustment. Synchronous motors are commonly used for large-capacity and low-speed power machines (see Synchronous Motors).


    Synchronous motors not only have a high power factor, but their speed has nothing to do with the size of the load. Work is more stable. DC motors are often used where wide-range speed regulation is required. But it has a commutator, which has a complicated structure, is expensive, difficult to maintain, and is not suitable for harsh environments.