Rolling Bearing Torque Anomaly Detection via Magnetic Coupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting torque anomalies in rolling bearings, known as 'Gorokan', are subjective and inconsistent, leading to unnecessary rejection of entire batches due to manual testing, which is highly dependent on operator dexterity and subjective factors.
Innovation Solution
A method and device that convert fluctuations in free torque into an electrical signal using a magnetic coupling to rotate the bearing 360° clockwise and counterclockwise, measured by a load cell or piezoelectric material, and analyzed using FFT to objectively detect anomalies without mechanical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual testing is used to detect torque anomalies, then operator flexibility is maintained, but measurement precision and reliability deteriorate due to subjectivity
Solution Approach 1:
The patent replaces manual mechanical testing with an automated measurement system that uses a magnetic coupling to apply torque and a load cell to measure torque values. This substitution eliminates operator subjectivity while maintaining operational simplicity through automated rotation of the bearing outer ring and electronic data collection.
Solution Approach 2:
The patent introduces a magnetic coupling as an intermediary between the torque application mechanism and the bearing. This magnetic coupling allows torque to be applied without direct mechanical contact, eliminating friction and mechanical interference that could affect measurement accuracy, while still enabling effective torque transmission for anomaly detection.
2Measurement precision
If automated measurement system is implemented, then measurement precision and reliability improve, but device complexity increases
Solution Approach 1:
The patent replaces complex manual testing procedures with a streamlined automated system consisting of a magnetic coupling, load cell, and computer. This substitution reduces operational complexity while improving measurement reliability, as the automated system eliminates human variability and provides consistent, repeatable measurements.
Solution Approach 2:
The patent extracts the essential measurement function from the complex manual testing process, isolating the critical components (magnetic coupling, load cell, computer) needed for accurate torque measurement. This extraction simplifies the overall system by removing unnecessary manual operations and focusing only on the core measurement functionality.
3Measurement precision
If magnetic coupling is used to rotate the bearing, then measurement precision improves by eliminating mechanical contact, but device complexity increases
Solution Approach 1:
The patent replaces direct mechanical contact for torque application with a magnetic coupling system. This substitution eliminates friction and mechanical interference between the testing apparatus and bearing, significantly improving the precision of torque fluctuation detection while the magnetic coupling itself provides a relatively simple implementation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides an objective, repeatable, and reliable detection of torque anomalies, eliminating human error and ensuring high repeatability in identifying defective bearings.
Implementation Method 1
use is made of a magnetic coupling to rotate the bearing by 360° clockwise, then by 360° counterclockwise
Implementation Method 2
The free torque of the bearing is measured by a load cell or a piezoelectric material. Since the torque is applied to the outer ring via a magnetic coupling, it is possible to identify the slightest changes in torque. It is known that piezoelectric material converts a deformation into a current.
Data Source
AI summary
A method for automatically detecting free torque anomalies in a rolling bearing includes: a) securing the first ring to a stationary support, b) mechanically connecting a first drag element to the second ring, the first drag element being configured to rotate the second ring relative to the first ring when operated upon by an outside force, c) using a motor-actuated second drag element operatively connected to the first drag element to rotate the first drag element at a first predetermined angular speed about the axis of rotation at least 360° clockwise and counterclockwise, d) generating an electrical signal indicative of a mechanical force between the first drag element and the second drag elements during the step c, and e) processing the electrical signal to calculate free torque values of the rolling bearing during rotation.