Core Drill Bit Shaft Slit Antenna for Protected Transponder Signals
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Solution Overview
Problem
Existing core drill bits with abrasive cutting segments face inefficiencies in radio signal communication due to metal shielding, which can lead to transponder damage under harsh working conditions, and lack effective cooling and identification methods for the cutting segments.
Innovation Solution
A core drill bit design featuring a slit antenna in the tubular shaft to enhance radio signal strength, a transponder integrated with the annular cutting section for efficient data transmission, and a cooling system that flushes water through the tubular shaft to maintain abrasive cutting elements, along with a data storage system for segment identification and operational parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transponder is mounted on the outside of the tubular shaft for better signal reception, then the communication efficiency is improved, but the transponder is damaged under rough working conditions
Solution Approach 1:
The transponder is nested inside the tubular shaft, specifically in a recess or cavity within the shaft structure. This internal mounting protects the transponder from external damage while maintaining communication functionality through the shaft material or via antennas integrated into the shaft wall.
Solution Approach 2:
An antenna structure is introduced as an intermediary between the transponder and the external interrogating unit. The antenna transmits radio signals through the tubular shaft material, enabling communication without requiring the transponder to be externally mounted. The antenna acts as a mediator that bridges the internal transponder and external communication environment.
2Strength
If the tubular shaft is made of steel for mechanical strength, then the structural integrity is improved, but the radio signal communication is shielded and becomes inefficient
Solution Approach 1:
An antenna system is introduced as an intermediary that enables radio signal transmission through the steel tubular shaft. The antenna structure, which may be integrated into the shaft wall or positioned within the shaft, acts as a mediator that couples the internal transponder to the external electromagnetic environment, allowing communication despite the shielding properties of the steel material.
Solution Approach 2:
The tubular shaft exhibits local quality variations: the bulk steel material provides mechanical strength and shielding, while specific regions (such as the shaft wall containing embedded antennas or localized non-metallic sections) are modified to permit radio signal transmission. This localized modification allows simultaneous achievement of structural integrity and communication functionality.
3Reliability
If the slit is filled with non-metallic material for antenna functionality, then the signal strength is improved, but the structural strength of the tubular shaft is reduced
Solution Approach 1:
The tubular shaft exhibits local quality variations: the bulk steel material provides mechanical strength, while specific regions (such as the shaft wall containing embedded antennas or localized non-metallic sections) are modified to permit radio signal transmission. This localized modification allows simultaneous achievement of structural integrity and communication functionality.
Solution Approach 2:
The tubular shaft employs composite construction, combining steel material for structural strength with non-metallic materials (such as plastics or ceramics) in specific regions where the slit antenna is formed. This composite approach allows the shaft to maintain overall mechanical integrity while creating localized non-conductive pathways for radio signal transmission through the slit antenna structure.
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 enhanced signal strength and cooling system improve communication efficiency and mechanical stability, while the data storage ensures reliable identification and monitoring of cutting segment usage, optimizing the drilling process.
Implementation Method 1
The core drill bit further comprises a transponder and a slit in the tubular shaft. The slit forms a slit antenna for the transponder.
Implementation Method 2
The receiving room of the tubular shaft is closed such it can be flushed with water for cooling the abrasive cutting elements.
Data Source
AI summary
A core drill bit 1 includes a tubular shaft 12, a mounting platform 34 provided on a proximal end of the tubular shaft 12 for mounting the core drill bit on a power tool 35, and an annular cutting section 2 provided with abrasive cutting segments 3 arranged at a distal end of the tubular shaft 12. The core drill bit 1 further includes a transponder 24 and a slit 27 in the tubular shaft 12. The slit 27 forms a slit antenna 26 for the transponder 24.