RFID Consumable Identification for Liquid Jet Cutting

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Solution Overview

Problem

Liquid jet cutting systems face challenges in automatically detecting and configuring consumables, leading to poor cut quality and premature consumable failure due to incorrect installations and manual parameter adjustments.

Innovation Solution

A system with RFID tags on consumables that communicate with a reader to automatically identify and adjust operating parameters, such as kerf settings, based on the type, usage, and compatibility of nozzle and orifice components, using a computing device like a CNC or PLC.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual identification and configuration of consumables is used, then operator control is maintained, but installation errors occur and productivity is reduced

Engineering Contradiction:
Improveconsumable installation accuracyVSAvoidsystem setup time
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The consumable components automatically identify themselves through embedded RFID tags that transmit component type, usage history, and compatibility information to the CNC controller, eliminating the need for manual identification and configuration by operators

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system reads RFID tag data from consumables and automatically configures operating parameters based on the received information, providing closed-loop feedback that ensures correct consumable-system matching and prevents installation errors

Inventive Principle:
Principle #23Feedback

2Reliability

If manual tracking of component life is used, then system complexity is minimized, but consumable failure detection is delayed

Engineering Contradiction:
Improveconsumable life monitoring accuracyVSAvoidtracking system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Each consumable component maintains its own usage history and life cycle data stored on the RFID tag, allowing the component to self-report its status without requiring external monitoring systems

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The RFID tag serves multiple functions including component identification, usage tracking, and predictive maintenance scheduling, consolidating what would otherwise require separate systems into a single integrated solution

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Manufacturing precision

If incorrect consumables are installed, then device complexity is reduced, but cut quality deteriorates

Engineering Contradiction:
Improvecut qualityVSAvoidconsumable identification system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The CNC controller reads RFID tag information from installed consumables and automatically verifies compatibility, providing feedback that prevents incorrect consumable combinations from being used in the cutting system

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The RFID tag acts as an intermediary that carries compatibility information between the consumable component and the CNC controller, enabling automatic verification without complex mechanical or optical identification systems

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3083170B1Identification of components in liquid jet cutting unit
Publication Date: 2020.10.14 HYPERTHERM INC
  • EP3083170B1 patent drawingFigure 1~2
  • EP3083170B1 patent drawingFigure 3
  • EP3083170B1 patent drawingFigure 4

AI summary

A consumable component of a liquid jet cutting system is provided. The consumable component includes a body defining a conduit for a liquid jet and a signal device located on or within the body for transmitting a signal associated with the consumable component to a reader.