Cutting Machine Tool Identification via RFID Sensor
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Solution Overview
Problem
Current cutting machines lack an efficient system for automatically selecting and monitoring interchangeable cutting tools, leading to suboptimal maintenance intervals and tool replacement processes.
Innovation Solution
A cutting machine equipped with a sensor unit for identifying and recording individual cutting tool data, a computing unit for monitoring operating times, and a tool changing unit for automatic tool exchange, allowing for automated maintenance interval determination and tool replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual monitoring and replacement of cutting tools is used, then device complexity is reduced, but productivity and maintenance efficiency deteriorate
Solution Approach 1:
The cutting tool automatically identifies itself through an RFID tag that the sensor unit reads, eliminating the need for manual identification and data entry. The tool provides its own identification information autonomously, improving maintenance efficiency without requiring complex manual intervention systems
Solution Approach 2:
The patent replaces manual mechanical identification processes with an automated sensor unit that reads RFID tags. This substitution of mechanical/manual operations with automated sensing and electronic identification improves productivity while keeping the added complexity minimal and focused only on the necessary sensing components
2Measurement precision
If automated tool identification and monitoring is implemented, then maintenance precision is improved, but device complexity increases
Solution Approach 1:
The identification information is extracted from the cutting tool itself via an RFID tag, separating the identification function from the monitoring system. This allows precise tool identification without requiring the entire monitoring system to be complex, as the tool carries its own identification data
Solution Approach 2:
The RFID tag serves as an intermediary between the cutting tool and the sensor unit, enabling accurate identification without direct complex interaction. This intermediary simplifies the overall system by providing a standardised communication interface that improves measurement precision while limiting complexity growth
3Loss of time
If cutting tools are replaced based on fixed schedules, then ease of operation is improved, but loss of time occurs due to premature or delayed replacement
Solution Approach 1:
The sensor unit continuously monitors cutting tool usage and provides feedback to the control unit, which automatically determines replacement timing based on actual operating conditions. This feedback loop eliminates both premature and delayed replacement, optimizing tool lifespan without requiring complex manual scheduling decisions
Solution Approach 2:
The replacement schedule transitions from a static fixed timetable to a dynamic system that adapts to actual tool usage and condition. The control unit adjusts replacement timing in real-time based on sensor data, reducing time loss while maintaining operational simplicity through automated decision-making
Data Source
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Figure 3a~3h
Figure 4a~4b
AI summary
Cutting machine (1) comprising a work surface (10) designed to receive at least one object to be cut, a work assembly (12) movably arranged above the work surface and comprising a receiving device for receiving an interchangeable cutting tool (20), and a computing unit (15) comprising a processor with computing capacity and algorithms for controlling the cutting machine and storage capacity for providing a database, characterized by a first sensor unit designed to capture individual identification information of the cutting tool and to provide captured identification information to the computing unit, wherein the computing unit is designed to recognize the cutting tool based on the identification information, to capture operating data of the cutting tool and to store it in the database,wherein the operating data includes at least one operating time of the cutting tool, and operational monitoring of the cutting tool is carried out based on the operating data.