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    EXHIBITION

    2018-05-10 08:24:40


    Zhejiang Sankai Machine&Electric Co.,Ltd specializes in the production of high-quality reducer products such as helical planetary reducer and worm gear reducer. Welcome to purchase gear reducer.

    In the family of speed reducers, planetary speed reducers are widely used in servo, stepper, and direct current transmission systems because of their advantages such as small size, high transmission efficiency, wide deceleration range, and high precision. Its role is mainly to reduce the speed increase torque and reduce the load / motor moment of inertia ratio under the premise of ensuring the precision transmission. When the concentricity of the assembly between the motor and the speed reducer is very good, the output bearing of the motor is only subjected to rotational force and will be smooth during operation.

    However, when the center of gravity is different, the output shaft is subjected to a radial force from the input terminal of the reducer. This long-term effect of the radial force will cause the output shaft of the motor to be forced to bend, and the direction of bending will change as the output shaft rotates. For each rotation of the output shaft, the direction of the lateral force changes by 360 degrees. If the error of concentricity is large, the radial force increases the temperature of the output shaft of the motor, and its metal structure is continuously destroyed. Finally, the radial force will exceed the radial force that the output shaft of the motor can bear, resulting in the final drive. Broken motor output shaft. When the error of the concentricity is greater, the shorter the output shaft of the drive motor is broken.

    When the output shaft of the drive motor is broken, the input of the reducer will also receive the radial force from the motor. If the radial force exceeds the maximum radial load that both can withstand, the result will also be Causes the reducer input to deform or even break. Therefore, ensuring concentricity during assembly is critical!

    Intuitively speaking, if the motor shaft and the input of the speed reducer are concentric, the cooperation between the motor and the speed reducer will be very tight. The contact surfaces between them are tightly connected, and if they are not concentric when assembling, the contact surface between them There will be gaps between them.

    In the same way, the output shaft of the reducer is also broken or bent, for the same reason as the broken shaft of the drive motor. However, the output of the reducer is the product of the output of the drive motor and the reduction ratio, and the output is greater than that of the motor. Therefore, the output shaft of the reducer is more likely to be broken. Therefore, when the user uses the reducer, the output concentricity of the output should also be very careful! In addition to the broken shaft of the reducer caused by the poor concentricity of the output assembly of the reducer, the output shaft of the reducer is broken if the following reasons are not exceeded.

    First of all, the wrong selection results in insufficient output of the gearbox. Some users mistakenly believe that as long as the rated output torque of the selected gearbox meets the working requirements, it is not true. First, the rated output torque of the assigned motor is multiplied by the reduction ratio, and the obtained value is in principle smaller than the product. The rated output torque of the similar reducer provided by the sample is the same as the overload capacity of the drive motor and the maximum operating torque required in practice. In theory, the user's maximum operating torque must be less than twice the rated output torque of the reducer. Especially for some applications, this criterion must be strictly observed. This is not only the protection of the gear inside the reducer, but also the main reason is that the output shaft of the reducer is not broken.

    This is mainly because, if there is a problem with the installation of the equipment, the output shaft of the reducer and its load are jammed. At this time, the overload capacity of the drive motor will continue to increase its output. As a result, the output bearing of the reducer may be affected. The force exceeds its rated output torque by 2 times and the output shaft of the reducer is broken. Secondly, in the process of acceleration and deceleration, if the momentary torque received by the output shaft of the speed reducer exceeds twice its rated output torque, and this acceleration and deceleration are too frequent, it will eventually break the shaft of the speed reducer.

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