What Is a Balancing Machine?

The balancer is an instrument used to measure the imbalance of the rotor. The balancer is a hard-supported balancer. The stiffness of the swing frame is very large. The measurement of the dynamic balancer is used to correct the amount of imbalance of the rotor, so that the vibration generated during the rotation of the rotor may act on it. The vibration on the bearing is reduced to the allowable range to achieve the purpose of reducing vibration, improving performance and improving product quality.

An unbalanced rotor supports its support structure during its rotation and

In terms of application: Yes

The main performance of the balancing machine is expressed by two comprehensive indicators: the minimum reachable unbalance amount and the unbalance reduction rate: the balance accuracy unit is g.cm, the smaller the value, the higher the accuracy; the period of measuring the unbalance amount of the same workpiece is also one of the performance indicators This directly affects the production efficiency. Under the condition of ensuring accuracy, the shorter the balancing period, the better.

The development of balancing machines has a history of more than 100 years. In 1866, the German company Siemens invented the generator. Four years later, Canadian Henry Martinson applied for a patent for balancing technology, which opened

Among the problems related to the detection of dynamic balancing machines: Common machines include a large number of components that perform rotational motion, such as various drive shafts, spindles, motors, and rotors of steam turbines, collectively referred to as slewing bodies. Under ideal circumstances, when the slewing body rotates and when it does not rotate, the pressure on the bearing is the same. Such a slewing body is a balanced slewing body.

problem

However, due to various factors such as uneven material or blank defects, errors in processing and assembly, and even asymmetrical geometric shapes during design, various rotating bodies in the project make the rotating body The centrifugal inertial force generated by a small particle cannot offset each other. The centrifugal inertial force acts on the machine and its foundation through the bearing, causing vibration, generating noise, accelerating bearing wear, shortening the life of the machine, and can cause destructive accidents in severe cases. For this reason, the rotor must be balanced to reach the allowable balance accuracy level, or the amplitude of the mechanical vibration generated thereby can be reduced within the allowable range. The difference between rotor dynamic and static balance.

Static balance

Correction balance is performed on one correction surface of the rotor, and the remaining imbalance after correction is to ensure that the rotor is in the specified range of allowable imbalance when it is static.

Dynamic balance

Correction balance is performed on two correction surfaces of the rotor at the same time, and the remaining imbalance after correction is to ensure that the rotor is within the specified range of allowable imbalance during dynamic.

Selection and determination of rotor balance

How to choose the balance of the rotor is a key issue. Its selection has such a principle: as long as the static balance can be done under the premise of meeting the needs of the rotor after balancing, do not do dynamic balance, and if it can do dynamic balance, do not do static and dynamic balance. The reason is simple. Static balance is easier to do than dynamic balance, saving effort, labor and cost.