Fluid Jet Cutting Force Sensing for Cut Quality Validation
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Solution Overview
Problem
The performance assessment and adjustment of fluid jet cutting systems are laborious and time-consuming, relying on qualitative inspections and prone to errors, as they require multiple cuts in workpieces to evaluate system characteristics like orifice size, pressure, and abrasive flow rate, which affects the quality of cuts in materials like thick metals or ceramics.
Innovation Solution
A method involving a validation system that measures reactive forces on a coupon with characteristics similar to the workpiece, allowing for the selection of optimal settings by comparing force histories during cuts at different settings, thereby improving the efficiency and accuracy of fluid jet cutting system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional qualitative inspection methods are used to assess fluid jet cutting system performance, then the assessment process is simple to perform, but the accuracy and reliability of performance evaluation deteriorates
Solution Approach 1:
The patent replaces conventional qualitative visual inspection methods with quantitative force measurement using sensors. The force measurement device measures reactive forces imparted by the fluid jet to a coupon, providing objective numerical data instead of subjective visual assessments. This substitution of measurement methodology directly improves evaluation accuracy while maintaining operational simplicity.
Solution Approach 2:
The patent introduces a coupon as an intermediary object between the fluid jet cutting system and the measurement device. The coupon serves as a standardized test medium that translates system performance into measurable force reactions. This intermediary enables consistent, repeatable measurements without requiring direct complex instrumentation on the cutting system itself.
2Reliability
If multiple cuts are made in workpieces to evaluate system characteristics, then more data is collected for assessment, but machine downtime increases
Solution Approach 1:
The patent performs performance assessment during the normal cutting operation itself, rather than requiring separate test cuts. The force measurement device continuously or periodically measures reactive forces during actual workpiece cutting, collecting assessment data without interrupting production. This eliminates the need for dedicated downtime for evaluation while maintaining reliable performance monitoring.
Solution Approach 2:
The patent enables continuous performance assessment during uninterrupted cutting operations. The measurement system operates concurrently with the cutting process, continuously collecting force data that reflects real-time system performance. This maintains productive action throughout the assessment period rather than requiring stoppages for evaluation.
3Measurement precision
If qualitative inspection methods are used to evaluate cut quality, then the inspection process is quick to perform, but the precision of performance assessment deteriorates
Solution Approach 1:
The patent replaces time-consuming detailed visual inspection of cut quality with immediate force measurement data. The force measurement device provides real-time quantitative feedback about cutting performance based on reactive forces, eliminating the need for operators to manually examine and assess cut surfaces. This substitution delivers both higher precision and faster assessment.
Solution Approach 2:
The patent implements real-time feedback through force measurement during cutting operations. The measurement device provides immediate numerical feedback about system performance and cut quality without requiring delayed visual inspection. This continuous feedback loop enables rapid assessment and potential real-time adjustments, improving both precision and speed of evaluation.
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 approach enables reliable and efficient assessment and adjustment of fluid jet cutting systems, reducing machine downtime and improving cut quality by quantitatively evaluating system characteristics and optimizing cutting parameters based on measured reactive forces.
Implementation Method 1
measuring a first history of reactive forces imparted by the fluid jet system to the coupon during at least a portion of the first cut
Data Source
AI summary
Disclosed herein are systems and methods for improving the performance of a fluid jet cutting system by testing and adjusting characteristics of the system based on the effect of the characteristics on forces imparted by the system to a workpiece being cut. Also disclosed are systems and methods for monitoring and validating the performance of fluid jet cutting systems, and for diagnosing such systems. In some cases, the technologies described herein can be used to determine whether components of a fluid jet system require maintenance, or that characteristics of the system require adjustment.