Core Drill Bit Repeater Link for Replaceable Segment Tracking
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Solution Overview
Problem
Existing core drill bits lack efficient means for tracking the usage and performance of abrasive cutting segments, leading to suboptimal operation and potential damage due to unknown wear levels and operating conditions.
Innovation Solution
A core drill bit design featuring a tubular shaft with a replaceable annular cutting section equipped with a transponder for data storage and communication, allowing machine tools to read and transmit information about the cutting segments' usage and operating parameters, eliminating the need for a power supply and using passive transponders for radio communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a transponder is attached to the replaceable annular cutting section for data storage and communication, then real-time monitoring and tracking of cutting segments is enabled, but the device complexity increases due to additional components
Solution Approach 1:
The first transponder is nested within the replaceable annular cutting section, while a second transponder is nested within the tubular shaft. The second transponder acts as a repeater that receives signals from the first transponder through the wall thickness of the tubular shaft, enabling communication without external antennas on the cutting section.
Solution Approach 2:
The second transponder serves as an intermediary repeater device that facilitates communication between the first transponder on the cutting section and the external machine tool. It receives electromagnetic signals through the tubular shaft wall and retransmits them, enabling indirect communication without requiring the cutting section to have direct antenna access.
2Device complexity
If passive transponders are used for radio communication without power supply, then the device complexity is reduced, but the communication range and reliability may be limited
Solution Approach 1:
The passive transponders utilize electromagnetic energy from the machine tool's interrogating signals to power themselves and transmit data back. The system serves itself by harvesting energy from the communication signals, eliminating the need for separate power sources while maintaining communication functionality.
Solution Approach 2:
The second transponder acts as an active intermediary that can amplify and retransmit signals, improving communication reliability compared to a simple passive transponder. It serves as a signal booster that compensates for signal attenuation through the tubular shaft wall.
3Duration of action of moving object
If the annular cutting section is made replaceable for extended usage, then the duration of action is improved, but the loss of information occurs when cutting segments are replaced
Solution Approach 1:
The second transponder on the tubular shaft creates a copy or backup of the usage data stored on the first transponder of the replaceable cutting section. This duplicate data storage ensures that usage information is preserved even when the cutting section is replaced, allowing tracking of cumulative usage across multiple cutting sections.
Solution Approach 2:
The system performs preliminary data transfer by having the second transponder receive and store usage data from the first transponder before the cutting section is removed. This ensures data is preserved in advance of the replacement operation.
4Use of energy by moving object
If impedance matching is implemented between the repeater and transponder, then the use of energy is optimized, but the device complexity increases due to additional matching components
Solution Approach 1:
The impedance of the second transponder is specifically designed and adjusted to match the impedance characteristics of the first transponder and the transmission path through the tubular shaft wall. This parameter optimization maximizes energy transfer efficiency during electromagnetic signal transmission and reception.
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
Enables real-time monitoring and optimization of drilling operations, extending the life of cutting segments and improving drilling efficiency by providing precise control over torque, speed, and water flushing, while allowing for easy replacement and tracking of cutting segments.
Implementation Method 1
A first transponder (24) is provided at the distal end of the tubular shaft (12). A repeater (28) is provided comprising a second transponder (29) at the proximal end of the tubular shaft (12), an antenna (32) facing the first transponder (24), and a wired connection (34) between the antenna (32) and the repeater (28)
Data Source
Figure 1~3
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Figure 7~9
AI summary
The inventive core drill bit (1) comprises a tubular shaft (12), a mounting platform (31) provided on a proximal end of the tubular shaft (12) for mounting the core drill bit on a power tool (26), and an annular cutting section (2) provided with abrasive cutting segments (3) arranged at a distal end of the tubular shaft (12). A first transponder (24) is provided at the distal end of the tubular shaft (12). A repeater (28) is provided comprising a second transponder (29) at the proximal end of the tubular shaft (12), an antenna (33) facing the first transponder (24), and a wired connection (34) between the antenna (33) and the repeater (28).