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Professionally provides dynamic balance detection, correction and dynamic balance cleaning equipment for all types of high speed rotating workpieces (from 500 to 10,000 rpm)
Zhuo Xuanjin explains how the balancing machine works
Rotary rotors are commonly used in production and life, such as motor rotors, machine tool spindles, internal combustion engine crankshafts, turbine rotors, gyro rotors, and clocks, etc., while any rotor rotates about its axis due to mass distribution relative to the axis. Uniformly produces centrifugal force. This unbalanced centrifugal force causes the rotor bearing to vibrate, generate noise and accelerate bearing wear, which can seriously affect the performance and service life of the product. Rotating components are subject to dynamic balance correction during the manufacturing process to achieve smooth and normal operation. Then how does the dynamic balancing machine perform dynamic balance detection on the rotor? How much do you know about the working principle of the dynamic balancing machine? Let's take a look at the Guangzhou Zhuo Xuan Jin Dynamic Balance Machine manufacturer:
Correcting the unbalance amount of the rotor according to the data measured by the balancing machine can improve the mass distribution of the rotor with respect to the axis, and reduce the vibration generated when the rotor rotates or the vibration force acting on the bearing to the allowable range. Therefore, the balancing machine is an indispensable device for reducing vibration, improving performance and improving quality.
How to balance rotor dynamic balance detection
The dynamic balancing machine is a typical mechatronic device, which can be divided into a mechanical body, a driving part and a transmission part, a signal collecting part, and a central processing unit, each of which performs its own functions and cooperates with each other.
The mechanical body is mainly divided into three parts: the bed body, the swing frame and the head box. It is used for the support of the rotor. The rotors of different weights and specifications need to be equipped with corresponding mechanical bodies to ensure the accuracy of the rotor dynamic balance and the safety of the operators. .
The drive section provides the power to rotate the rotor, and the drive section refers to the process shaft, link shaft or fixture required for the rotor to rotate.
The signal acquisition part is used for the collection and preliminary processing of the rotor vibration signal. It is divided into the speed collection and the centrifugal force. The balance machine first needs to measure the rotation speed of the workpiece to determine the magnitude of the centrifugal force. When the rotor rotates, it will cause the vibration of the mechanical part. The sensor collects the vibration signal and, after some processing, transmits it to the central processing unit.
The central processing unit is mainly divided into a main board, a filter board, an A/D acquisition card, and a passive backplane, which are used for conversion, screening, and calculation of the rotor vibration signal, thereby obtaining the phase and size of the rotor unbalance amount, and then displayed on the screen of the computer. on.
Dynamic balance machine performance indicators
The main performance of the dynamic balancing machine is represented by two comprehensive indicators of the minimum reachable residual unbalance and the unbalanced decrease rate. The former is the minimum value of the residual unbalance that the balance machine can reach. It is an indicator to measure the maximum balance capacity of the balance machine; the latter is the ratio of the imbalance between the unbalanced amount and the initial unbalance after a correction. It is a measure of the balance efficiency. The indicator is generally expressed as a percentage. When we purchase a dynamic balancing machine, these two performance indicators need to be considered.
In modern machinery, flexible rotor balancing machines have been developed due to the widespread use of flexible rotors. This kind of balancing machine must carry out stepless speed regulation within the working speed range of the rotor; in addition to measuring the vibration or vibration force of the support, it can also measure the deflection of the rotor. The flexible rotor balancing machine is sometimes installed in a vacuum protection room to suit the balance of a rotor such as a steam turbine. It is equipped with a large number of auxiliary equipment such as a vacuum system, a lubrication system, a lubricating oil degassing system, and a data processing computer system.
According to the needs of mass production, automatic balancing machines that can automatically perform balance measurement and balance correction for specific rotors, as well as balance automatic lines, Hyundai has been extensively equipped in the industrial sectors such as automobile manufacturing and motor manufacturing.