Removable RFID Collar for Drill Bit Identification
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Solution Overview
Problem
Existing RFID tag attachment methods for tools like drill bits are impractical, as direct adhesion can cause unbalanced rotation and safety hazards, and replacing tools with integrated RFID tags is expensive and inefficient.
Innovation Solution
A bit identification assembly comprising a metal core, an RFID tag, and a plastic cover that allows for balanced rotation and easy attachment to tools, with retaining elements to secure the assembly without compromising the tool's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an RFID tag is mounted directly to the exterior of a drill bit using adhesives or shrink-wrap, then the RFID tag can be attached to the tool, but the bit cannot access the workpiece and experiences unbalanced rotation causing safety hazards
Solution Approach 1:
The RFID tag is nested within a collar assembly that fits over the bit body. The collar contains an internal cavity that houses the RFID tag, positioning it away from the bit's cutting edges and rotation path. This nesting structure allows the RFID tag to be attached without interfering with the bit's functionality while maintaining balanced rotation through proper weight distribution.
Solution Approach 2:
The collar assembly acts as an intermediary between the RFID tag and the bit. Instead of attaching the RFID tag directly to the bit, the collar serves as a mediator that holds the tag at a distance, preventing direct interference with the bit's operation while still enabling RFID identification.
2Reliability
If existing tools are replaced with new RFID-enabled tools manufactured to incorporate an RFID tag, then tracking and identification can be achieved, but the cost becomes expensive and impractical
Solution Approach 1:
The RFID identification system is segmented into a separate, removable collar assembly that can be independently manufactured and attached to existing tools. This segmentation allows the RFID functionality to be added without replacing the entire tool, enabling cost-effective retrofitting of existing tool inventories while maintaining tracking and identification capabilities.
Solution Approach 2:
Instead of manufacturing entire tools with integrated RFID tags, the RFID functionality is localized to a specific collar component that can be attached to the bit. This local quality approach allows selective addition of RFID capability only where needed, reducing overall manufacturing costs compared to replacing entire tools.
3Loss of information
If an RFID tag is mounted directly to the bit, then identification is possible, but the attachment method creates unbalanced rotation
Solution Approach 1:
The RFID tag is nested within the collar's internal cavity, positioned away from the bit's rotation axis. The collar's design allows for balanced weight distribution around the rotation axis, preventing unbalanced rotation while maintaining identification capability through the nested RFID tag structure.
Data Source
Figure 1A~1C
Figure 2A~3B
Figure 4A~4C
AI summary
Disclosed are various embodiments for attaching an electronic identification device to bits, such as drill bits and driver bits. A bit identification assembly is configured to attach to a bit. The bit identification assembly may include a core having a bit receptacle where a bit is retained. An electronic identification device may be attached to the core to facilitate identifying and tracking the bit to which the bit identification assembly is attached.