Bearing Testing Device for Closed-Loop Misalignment Control

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current misaligned bearing performance tests lack accurate control and measurement of misalignment, especially in the position adjustment and stress, making it difficult to verify bearing performance effectively in a misaligned state.

Innovation Solution

A bearing testing device with a main shaft, adjusting plates that rotate around perpendicular axes, and an actuating assembly to adjust these plates, along with distance sensors and oil cylinders to control and measure misalignment, enabling closed-loop control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional bearing testing methods are used, then the testing process is simple, but the misalignment control and measurement precision is insufficient

Engineering Contradiction:
Improvemisalignment measurement precisionVSAvoidtesting device complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The testing device is divided into multiple independent modules: adjusting plates for individual bearing alignment, actuating assemblies for precise position control, and distance sensors for measurement. Each module operates independently to control and measure misalignment of specific bearings, enabling precise measurement without requiring a completely complex integrated system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Distance sensors are installed to measure the actual misalignment of bearings in real-time, and this measurement data is fed back to the control system. The control system uses this feedback information to adjust the actuating assemblies, which in turn modify the adjusting plates to achieve the desired misalignment state, forming a closed-loop control system that improves measurement precision.

Inventive Principle:
Principle #23Feedback

2Manufacturing precision

If manual position adjustment is used, then the device complexity is low, but the misalignment control precision and closed-loop control capability are insufficient

Engineering Contradiction:
Improvemisalignment control precisionVSAvoidactuating assembly complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

Manual mechanical adjustment is replaced with actuating assemblies that use electromagnetic or hydraulic actuators to control the position of adjusting plates. These actuating assemblies receive electronic control signals and automatically adjust the bearing misalignment to precise positions, eliminating the need for manual operation while achieving high control precision.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The adjusting plates are designed to be dynamically adjustable during the testing process, not fixed in position. The actuating assemblies can modify the misalignment angle in real-time based on control signals, allowing the system to adapt to different testing requirements and maintain precise control throughout the test operation.

Inventive Principle:
Principle #15Dynamics

3Productivity

If multiple bearings are tested simultaneously, then the productivity is improved, but the individual misalignment control becomes more difficult

Engineering Contradiction:
Improvetesting efficiencyVSAvoidposition adjustment ease
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

Each bearing to be tested is equipped with its own adjusting plate and actuating assembly, allowing independent control of misalignment for each bearing. This segmentation enables multiple bearings to be tested simultaneously while maintaining individual control over the position and misalignment of each bearing, resolving the conflict between productivity and ease of operation.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20250251310A1Bearing testing device and testing method using the same
Publication Date: 2025.08.07 AB SKF SKF PATENT DEPARTMENT
  • US20250251310A1 patent drawing
  • US20250251310A1 patent drawing
  • US20250251310A1 patent drawing

AI summary

A bearing testing device and a method for testing bearing performance in a bearing misaligned state by the bearing testing device is disclosed. The bearing testing device tests the performance of a first bearing and/or a second bearing in a misaligned state. The testing device includes a main shaft for installing the first and second bearings to be tested. A first adjusting plate rotates around a first axis perpendicular to the main shaft for a certain angle, and directly or indirectly holds the outer ring of the first bearing. A second adjusting plate rotates around a second axis perpendicular to the main shaft for a certain angle, and directly or indirectly holds the outer ring of the second bearing. An actuating assembly adjusts the angle of the first adjusting plate relative to the first axis and the angle of the second adjusting plate relative to the second axis.