A bearing life cycle monitoring method based on digital twin

Abstract

The invention belongs to the technical field of bearing monitoring, and specifically relates to a method for monitoring the whole life cycle of bearings based on digital twins, comprising the following steps: step 1: building a bearing digital twin; step 2: performing the established bearing digital twin in service state Simulation correction; Step 3: Use the corrected bearing digital twin for full life cycle monitoring and early warning. The present invention is based on the digital twin bearing full life cycle monitoring method. By constructing the bearing digital twin and performing simulation correction on it in service state, and then using the corrected bearing digital twin to monitor and warn the bearing in the full life cycle, Knowing the operating condition of the bearing will help to better judge the life of the bearing and the possible faults that may occur during use.

Description

technical field [0001] The invention belongs to the technical field of bearing monitoring, and in particular relates to a method for monitoring the full life cycle of bearings based on digital twins. Background technique [0002] The bearing is one of the important parts in the spindle system, and it is a bridge connecting the rotating part and the non-rotating part; the inner ring of the bearing is connected with the main shaft, the outer ring of the bearing is connected with the box through the bearing seat, and there is a rolling body between the inner ring and the outer ring of the bearing , there is a cage between the rolling elements to maintain the distance; the high-speed rotating main shaft drives the inner ring of the bearing to rotate, and the force generated by the rotation is balanced through the rolling elements so that it will not affect the box; due to the existence of Error, the high-speed rotating bearing not only bears complex external force, but also bear...

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Problems solved by technology

[0002] The bearing is one of the important parts in the spindle system, and it is a bridge connecting the rotating part and the non-rotating part; the inner ring of the bearing is connected with the main shaft, the outer ring of the bearing is connected with the box through the bearing seat, and there is a rolling body between the inner ring and the outer ring of the bearing , there is a cage between the rolling elements to maintain the distance; the high-speed rotating main shaft drives the inner ring of the bearing to rotate, and the force generated by the rotation is balanced through the rolling elements so that it will not affect the box; due to the existence of Error, the high-speed rotating bearing not only bears complex external force, but also bears the stress, vibration, heat and other phenomena from the inside of the bearing, so the damage situation of the bearing is very complicated, and the bearing is inside the machine and cannot be directly monitored; so how to realize Obtain the full life cycle information of the bearing, and establish a digital twin of the bearing when it is working online, and describe the working status of the bearing from multiple factors, all of which have an important impact on the judgment of bearing life and prediction of failure

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