Miniaturized RFID Dental Tool Identification for CNC Tool Misuse
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Solution Overview
Problem
Dental CNC milling/grinding machines face issues with using inadequate dental tools, leading to low-quality restorations and tool breakage due to mismatched machining processes, resulting in user dissatisfaction and potential damage to restorations.
Innovation Solution
Integration of a miniaturized RFID tag on the dental tool shaft to store specific information, allowing the machine to read and write data about the tool's type, usage, and remaining service life, ensuring proper tool usage and preventing misuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dental tool is used without specific matching to the machining process, then the user can operate the machine with simple handling, but the quality of dental restoration becomes unacceptable and the tool may break
Solution Approach 1:
The system implements automatic feedback by reading RFID tags on dental tools to verify tool suitability for the current machining process. The control unit receives tool information, compares it with required tool specifications, and provides feedback through warnings or error messages to prevent inappropriate tool usage, thereby maintaining reliability while preserving ease of operation
Solution Approach 2:
The dental tool itself provides identification information through its RFID tag, enabling the system to automatically verify tool suitability without requiring user knowledge or manual verification. The tool self-identifies its specifications, and the system automatically determines compatibility with the current machining process
2Device complexity
If the user manually tracks tool service life and specifications, then the system complexity remains low, but the risk of using inadequate tools increases leading to low-quality restorations
Solution Approach 1:
The patent replaces manual tracking methods with an automated electronic identification system using RFID tags and wireless communication. The RFID tag stores tool specifications and service life information, which are automatically read and processed by the control unit, eliminating the need for manual record-keeping while ensuring restoration quality
Solution Approach 2:
The RFID tag acts as an intermediary carrier that stores and transmits tool information between the physical tool and the digital control system. This intermediary enables automatic information exchange, allowing the system to verify tool suitability and track service life without direct user intervention or complex manual procedures
3Device complexity
If no tool identification system is used, then the device structure remains simple, but the user cannot be prevented from using tools in incorrect positions or beyond their service life
Solution Approach 1:
The system performs preliminary verification by reading the RFID tag and checking tool suitability before the machining operation begins. The control unit validates tool specifications, service life status, and correct positioning in advance, and only permits operation when all checks pass, preventing unsafe usage before it can occur
Solution Approach 2:
The system provides immediate feedback through visual or audible warnings when an inappropriate tool is detected, such as incorrect tool type, exceeded service life, or wrong positioning. This feedback mechanism guides the user to correct the issue before machining begins, ensuring safe operation without requiring complex structural changes
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
The solution reduces the risk of low-quality restorations and tool breakage by ensuring the correct tool is used for the machining process, enhancing user safety and satisfaction by automatically managing tool usage and preventing incorrect tool placement.
Implementation Method 1
a miniaturized RFID tag which is arranged in front of the back end of the shaft
Data Source
AI summary
A dental tool (1) for use in a dental CNC milling/grinding machine for machining a dental restoration from a workpiece (6), the dental tool (1) has a shaft (2). The dental tool includes a miniaturized RFID tag (3) which is arranged in front of the back end (2a) of the shaft (2). A dental CNC milling/grinding machine (5) is also disclosed and has a machine compartment (5a) including one or more carriage units (5b) each adapted to exchangeably receive and drive one or more dental tools (1) for machining a dental restoration from a workpiece (6); one or more transceiver units (5c) each adapted to read and/or write the miniaturized RFID tag (3) of a dental tool (1); and a control unit adapted to control the transceiver units (5c), and the carriage units (5b) based on the information read from the miniaturized RFID tags (3).