Processes with a Significant Impact on the Initial Unbalance of the Rotor

The dynamic unbalance of the rotor is generated during the rotor processing. From the perspective of the rotor processing technology, analyze the main reasons for the rotor dynamic unbalance, and what are the processes and process control measures that have a significant impact on the initial rotor unbalance? Let’s learn about it with Jizhi.

1. Rotor iron core punching and lamination: Sampling check the thickness of the silicon steel sheet, punching burr, lamination tightness and unbalance, principalement par le contrôle de la qualité de la matrice d’emboutissage et le contrôle de l’épaisseur de la tôle d’acier au silicium pour limiter la flexion de l’arbre causée par le grand déséquilibre du noyau de fer. Les tôles d’acier empilées peuvent être tournées et empilées. Par exemple, Le rotor à 12 fentes peut être divisé en trois piles, et chaque pile peut être tournée 120 Degrés.

2. Enfoncement de l’arbre dans le noyau du rotor: La presse d’arbre adopte généralement une pression pneumatique ou hydraulique. En raison de la dispersion du processus de fabrication, L’arbre peut être plié en raison d’une force de pression excessive. En détectant la force de pression de l’arbre et en donnant une alarme lorsque la force de pression est trop importante, L’arbre peut être empêché d’être plié. Si l’arbre est limité et fixe lorsque la tête de presse presse presse l’arbre, so as to prevent the verticality deviation when pressing into the iron core

3. The fan blade is pressed into the shaft: Reasonably design the tooling for the fan blade to be pressed into the shaft to ensure that there is no deformation during pressing. Does not move after insertion

4. Rotor winding: The double-flying fork symmetrical winding method is adopted, and the tension of the left and right flying forks is required to be basically the same, and the enameled wire is evenly stacked.

5. Insulating paint: the rotor is required to keep rotating during the dripping and cooling process, the paint viscosity is required to be moderate, and a large number of air bubbles cannot be generated

A rotor with a large initial unbalance may cause unpredictable danger when rotating at high speed, so it is necessary to perform dynamic balance correction on the rotor. Rotor dynamic balance is an extremely important process in the motor manufacturing process, which is directly related to whether the performance of the motor’s noise and vibration indicators meets the standards. Defects in the electrical design of the motor can also cause excessive noise and vibration, which are intertwined with the mechanical imbalance problem, resulting in extremely complex motor noise and vibration problems. Jizhi has different types of rotor dynamic balancing machines with different deduplication methods.