X-Ray Tube Bearing Housing Rigidity Split for Vibration Damping

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Solution Overview

Problem

Existing X-ray tubes generate vibrations and associated strange noises during operation due to system vibrations in start, stop, and normal working states, which existing solutions have difficulty mitigating effectively.

Innovation Solution

The X-ray tube bearing assembly incorporates a bearing housing with distinct portions of varying structural rigidity, featuring a first portion with reduced rigidity, such as openwork portions or grooves, to absorb vibrations, while a second portion with higher rigidity maintains stability, utilizing materials or structural designs to enhance vibration absorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the bearing housing uses uniform high rigidity structure, then structural stability is improved, but vibration transmission and noise increase

Engineering Contradiction:
Improvestructural stabilityVSAvoidvibration transmission and noise
Core Design Contradiction:
Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The bearing housing is divided into different portions with different rigidity characteristics. The first portion has reduced rigidity (through openwork portions or grooves) to absorb vibrations, while the second portion maintains higher rigidity for stability. This local differentiation of structural properties resolves the contradiction between overall stability and vibration reduction.

Inventive Principle:
Principle #3Local quality

2Object-generated harmful factors

If the bearing housing structure is made more complex with vibration absorption features, then vibration reduction is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvevibration reductionVSAvoidstructural complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The bearing housing is segmented into a first portion and a second portion with distinct rigidity characteristics. The first portion incorporates vibration-absorbing features (openwork portions or grooves) while the second portion maintains structural stability. This segmentation allows vibration reduction functionality to be integrated without requiring complete redesign of the entire housing structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The first portion of the bearing housing incorporates openwork portions that create a porous or lattice-like structure. This porous design reduces rigidity to enable vibration absorption while maintaining sufficient structural integrity, achieving vibration reduction without excessive complexity.

Inventive Principle:
Principle #31Porous materials

3Loss of energy

If the first portion has reduced rigidity for vibration absorption, then vibration energy absorption is improved, but structural strength decreases

Engineering Contradiction:
Improvevibration energy absorptionVSAvoidstructural strength
Core Design Contradiction:
Loss of energyVSStrength

Solution Approach 1:

Reduced rigidity and vibration absorption features are applied locally to the first portion of the bearing housing, while the second portion maintains full structural strength. This localized approach allows energy absorption in specific areas without compromising the overall structural integrity required for bearing support.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The bearing housing effectively functions as a composite structure with two distinct portions having different mechanical properties. The first portion is designed with reduced rigidity for energy absorption, while the second portion provides high strength support, creating a composite-like system that optimizes both energy dissipation and structural integrity.

Inventive Principle:
Principle #40Composite materials

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

This design effectively reduces the transmission of vibrations and noise by absorbing energy, improving system stability and preventing resonance, thus reducing overall vibrations and strange noises in the X-ray tube assembly.

Implementation Method 1

The first portion has a different structural rigidity to that of the second portion... the first portion comprises multiple openwork portions... effectively reduces the transmission of vibrations and noise by absorbing energy

Methodology Applied
Scientific EffectVibration absorption: Damping

Data Source

PatentUS12476067B2X-ray tube bearing assembly and X-ray tube
Publication Date: 2025.11.18 SIEMENS HEALTHINEERS AG
  • US12476067B2 patent drawing
  • US12476067B2 patent drawing
  • US12476067B2 patent drawing

AI summary

An X-ray tube bearing assembly may include a bearing housing including an accommodating cavity; and a bearing core accommodated in the accommodating cavity. The bearing housing may include first and second portions. The second portion surrounds and forms a portion of the accommodating cavity to accommodate the bearing core. The first portion extends out of the second portion and surrounds and forms another portion of the accommodating cavity, and the other portion of the accommodating cavity forms an accommodating hollow cavity. The first portion may have a different structural rigidity to that of the second portion.