What are the four misunderstandings in choosing a dynamic balancing machine?
Balance speed and balance accuracy
Due to the lack of understanding of dynamic balancing machines, customers usually feel that the higher the balancing speed, the better the balancing accuracy. Actually not. A good balancer with a hard support (one with a rigid pendulum) can correctly detect the magnitude of the unbalance at lower speeds, but not at higher speeds, the balance accuracy will be better. For rotors of different quality and shape, we will use different balancing speeds to achieve higher detection efficiency and accuracy of the dynamic balancing machine. Generally speaking, the speed of the hard support dynamic balancing machine is controlled within 200-1500r/min, which can meet most of the standards of rotor dynamic balancing. For a soft support dynamic balancing machine, the balancing speed and balancing accuracy will be related to a certain extent, and within a certain speed range, the balancing speed and balancing accuracy are linear.
Rotor mass and large load-bearing mass of dynamic balancing machine
In the selection process of the dynamic balancing machine, the rotor mass and the maximum bearing mass of the dynamic balancing machine are important reference indicators. Different types and specifications of dynamic balancing machines will be used for rotors of different quality. The rotor mass is typically maintained between 25% and 80% of the larger bearing mass of the balancing machine. The dynamic balancing machine has higher balancing accuracy and efficiency, and has a longer service life.
Rotor balance state and working state
Some customers think that the support method of the rotor dynamic balance should be the same as the working method, so that the accuracy of the rotor dynamic balance can reach the working standard, which is mainly due to the lack of understanding of the dynamic balance machine. The dynamic balancing machine measures and corrects the unbalance within the unit mass of the rotor to ensure that the rotor can reach a small unbalance value within the rotor mass range under the current dynamic balancing technical standard. machine. Rotor dynamic balance is the adjustment of the rotor's own unit mass range. Its accuracy is independent of the equilibrium state. Customers only need to install the rotor correctly to use the equipment easily.
Working speed and balancing speed
After collecting and sorting out customers' opinions and suggestions, some customers believe that the dynamic balance accuracy of the rotor can only meet the requirements when the balance speed reaches the working speed of the rotor, which is mainly due to the customer's unclear understanding of the dynamic balance of the rotor. Concept of balancing speed. Balance Speed: The speed of the dynamic balancer during dynamic balance verification. For rigid rotors, on the premise of ensuring accuracy, a lower speed should be selected as much as possible, that is, the dynamic balancing machine can efficiently measure the unbalance of the rotor at the calibrated balancing speed. In general, the larger the rotor mass, the lower the balancing speed, regardless of the operating speed.
