Modular Dust-Extraction Tool Shaft for Lower-Cost Rock Machining
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Solution Overview
Problem
The high cost associated with forming suction-extraction channels in hand-held power tools for machining rock or mineral materials, which increases the overall use costs due to the need for costly machining processes like longitudinal boring of the shaft.
Innovation Solution
A modular design where the suction-extraction channel is formed by a couplable channel element and shaft, allowing for easy assembly and disassembly, enabling quick and cost-effective mounting, and enabling the tool head to be exchanged or adapted for different sizes and applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the suction-extraction channel is formed as a longitudinal bore in the shaft, then the rock dust can be transported away from the machining region, but the manufacturing cost increases considerably
Solution Approach 1:
The suction-extraction channel is divided into two separate components: the shaft and a detachable channel element. The channel element can be pushed onto the shaft to form the complete suction-extraction channel, eliminating the need for costly longitudinal boring of the entire shaft. This segmentation allows for simpler, more cost-effective manufacturing of each individual component.
2Object-affected harmful factors
If the shaft is bored longitudinally to form the suction-extraction channel, then the rock dust transport function is achieved, but the tool's overall cost increases
Solution Approach 1:
The tool is segmented into modular components including the shaft, tool head, and channel element. The channel element is a separate component that can be attached to the shaft, avoiding the need for expensive longitudinal boring of the shaft. This modular approach reduces device complexity and overall tool cost while maintaining the rock dust transport function.
Solution Approach 2:
The channel element is designed to be pushed onto the shaft, with the channel element containing the suction-extraction channel and the shaft being inserted into or alongside it. This nested arrangement allows the suction-extraction channel to be formed by the combination of two simpler components rather than requiring complex machining of a single component.
3Adaptability or versatility
If the tool is designed as a modular system with couplable components, then the adaptability to different applications is improved, but the device complexity increases
Solution Approach 1:
The shaft is designed as a universal component that can work with different tool heads of varying diameters and configurations. The standardized coupling interface allows the same shaft to be adapted to different applications by simply changing the tool head or channel element, providing multi-functionality without requiring a completely different shaft for each application.
Solution Approach 2:
The tool is divided into separable modules (shaft, tool head, channel element) with standardized coupling interfaces. This segmentation enables easy reconfiguration and adaptation to different applications by assembling different combinations of modules, rather than designing entirely different tools for each application.
Data Source
AI summary
A tool for a mobile power tool, for machining rock or mineral materials, comprises a shaft and a tool head, wherein a suction-extraction channel for transporting rock dust is formed at least along a part of the shaft. The tool head and a channel element, which are arranged longitudinally at least along a part of the shaft of the tool, are couplable and/or are coupled to the shaft in a releasable manner.