Abrasive Media Density Control in Cavitated Fluid Processing

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Solution Overview

Problem

Conventional fluid cavitation processes lack an efficient method for managing abrasive media levels in cavitated fluids, leading to inconsistent surface finishing of additive manufacturing parts, which often result in rougher surfaces compared to traditional manufacturing methods.

Innovation Solution

A system comprising sensors, a processor, and an abrasive media distribution device that monitors and maintains the density of abrasive media in the cavitated fluid within a processing tank, ensuring it remains at or above a threshold level by adding recycled media and redistributing settled particles, thereby achieving uniformity throughout the tank.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional fluid cavitation processes are used without abrasive media management, then the process is simpler to operate, but the surface finishing consistency deteriorates and roughness increases

Engineering Contradiction:
Improvesurface finishing consistencyVSAvoidabrasive media management system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system employs sensors to continuously monitor abrasive media density in the cavitated fluid and provides feedback to a control system. This feedback mechanism enables real-time detection of density variations and automatic adjustment of abrasive media addition rates, ensuring consistent surface finishing while maintaining manageable system complexity through automated control

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system automatically manages abrasive media levels by detecting density changes and triggering addition of recycled abrasive media as needed. The self-service capability maintains optimal abrasive media concentration without requiring continuous manual intervention, improving surface finishing consistency while keeping the system relatively simple to operate

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If abrasive media density is not monitored and maintained, then the system operation is simpler, but the surface roughness increases and finishing quality deteriorates

Engineering Contradiction:
Improvesurface roughness controlVSAvoidoperational simplicity
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The system replaces manual monitoring and adjustment of abrasive media density with automated sensing and control mechanisms. Sensors detect density levels and the control system automatically manages abrasive media addition, eliminating the need for continuous manual intervention while maintaining precise surface roughness control

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

Solution Approach 2:

The system performs self-monitoring and self-adjustment of abrasive media density through integrated sensors and automated control. This self-service approach maintains optimal surface finishing quality without requiring operators to continuously monitor or adjust parameters, preserving operational simplicity

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If abrasive media is allowed to settle without redistribution, then the system requires less energy and complexity, but the uniformity of abrasive media throughout the tank deteriorates

Engineering Contradiction:
Improveabrasive media uniformityVSAvoiddistribution system complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The system implements periodic redistribution of settled abrasive media through the cavitation process itself. The periodic cavitation events naturally resuspend and redistribute abrasive media throughout the fluid, maintaining uniform composition without requiring continuous mechanical mixing devices, thus achieving uniformity with minimal additional system complexity

Inventive Principle:
Principle #19Periodic action

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 solution ensures consistent and efficient surface finishing, capable of achieving surface roughness comparable to traditional methods, effectively addressing the limitations of conventional cavitation processes.

Implementation Method 1

determine a density of the abrasive media in the cavitated fluid in the processing tank in response to input from the set of sensors

Methodology Applied
Scientific EffectDensity measurement:

Implementation Method 2

fluid cavitation is a process that is capable of finishing all of the surfaces of almost any shape created by additive manufacturing

Methodology Applied
Scientific EffectCavitation: Cavitation

Implementation Method 3

spreading settled abrasive media in the processing tank to the cavitated fluid to increase a uniformity of the abrasive media throughout the processing tank

Methodology Applied
Scientific EffectSedimentation: Sedimentation

Data Source

PatentEP3666460B1System and method for managing abrasive media levels in cavitated fluid
Publication Date: 2023.07.12 THE BOEING CO
  • EP3666460B1 patent drawingFigure 1
  • EP3666460B1 patent drawingFigure 2
  • EP3666460B1 patent drawingFigure 3

AI summary

Disclosed herein are systems, methods, and appartuses for managing abrasive media in cavitated fluid (116). One system includes a set of sensors (302) in communication with the cavitated fluid (116) in the processing tank (114) and a processor (304) coupled to the set of sensors (302). The processor (304) is configured to determine a density of an abrasive media in the cavitated fluid (116) in the processing tank (114) and facilitate maintaining the density of abrasive media in the cavitated fluid (116) in the processing tank (114) at a level that is greater than or equal to a threshold level of abrasive media. A method includes determining a density of abrasive media in the cavitated fluid (116) in the processing tank (114) and maintaining the density of abrasive media in the cavitated fluid (116) in the processing tank (114) at a level that is greater than or equal to a threshold density of abrasive media. One apparatus includes modules for performing the method.