Method for obtaining balance correction information and device for acquiring balance correction information

WO2025069547A1 Publication Date: 2025-04-03IHI CORP
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Patent Information

Application Number
PCT/JP2024/018167
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-28
Filing Date
2024-05-16
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

The prior art is difficult to accurately obtain the dynamic balance correction information of the rotating body, especially when the rotating body is supported by a non-contact pneumatic bearing, it is difficult to effectively remove the eccentric vibration components during operation.

Method used

By collecting the first and second sets of vibration data at a specified rotation speed and a frequency lower than the specified rotation speed, and using these data to calculate the eccentric vibration components in operation, thereby obtaining high-precision balance correction information.

Benefits of technology

It is realized that when the rotating body is supported by a non-contact pneumatic bearing, the balance correction information is obtained with high accuracy, reducing the number of measurement data and improving the accuracy of balance correction.

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Abstract

This method for obtaining balance correction information includes: a step for obtaining first vibration data when a rotary body is rotating at a specific rotation speed without performing trial cutting; a step for obtaining second vibration data when the rotary body is rotating at a low-frequency rotation speed lower than the specific rotation speed without performing trial cutting; a step for obtaining third vibration data when the rotary body subjected to trial cutting to a first correction position is rotating at the specific rotation speed; a step for obtaining a first influence coefficient indicating the degree of influence of the trial cutting on the vibration of the rotary body by using the first vibration data and the third vibration data; a step for obtaining runout information indicating the degree of shaking caused by the shape of the rotary body by using the second vibration data; and a step for obtaining balance correction information by using the first vibration data, the influence coefficient, and the runout information.
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