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Vibration Diagnosis Analysis of the Failure of the Riveting Machine Shaft

2019-10-21

Vibration diagnosis analysis of the shaft failure of the riveting machine.

The rotating shaft of the Taicang riveting machine may cause uneven distribution of the quality of the shafting due to problems in the process of manufacturing and installation, such as damage to parts or bending of the shaft during operation. The eccentric inertial force will form a cyclical surge of lateral forced vibration on the rotating shaft. Force, this periodic stirring force may form the resonance of the shafting system, causing great damage to the shafting system, so the damage caused by the imbalance of the rotating shaft must be highly valued. The vibration characteristic of the shaft imbalance fault is that the direction of the vibration is mainly radial, and the vibration frequency is directly related to the rotation frequency, and the rotation frequency accounts for the main component. The phase of the unbalanced vibration wave of the shaft and the rotation mark have synchronization, and the amplitude thereof It is generally proportional to the rotational speed of the shaft. The faster the speed, the larger the amplitude, and the smaller the speed, the smaller the amplitude, but a large amplitude is formed at the resonance. When considering the vibration diagnosis of the shaft type, another case should be considered, that is, the vibration caused by the mechanical alignment during the shaft alignment due to equipment errors, box deformation, and the like. The amplitude of the vibration caused by the poor alignment of the shaft riveting machine is not large, and there is no obvious proportional relationship between the rotation speed of the rotating shaft, and the vibration direction is generally axial vibration instead of radial vibration, so it does not cause resonance problem. .


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