Abrasive Holding Device Aspiration Cavity Network
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Solution Overview
Problem
Existing abrasive-means holding devices for hand-held power tools, such as sanders, are inadequate in efficiently vacuuming off dust over a large area while maintaining mechanical stability during operation.
Innovation Solution
The design incorporates a holding body with a central axis that allows rotation, featuring a first side with aspiration cavities connected by through-holes to vacuuming openings, enabling efficient dust removal through a network of fluidically connected cavities and openings, which are arranged in a curved or spiral pattern to maximize dust intake and flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple vacuuming openings are provided to vacuum-off dust over a large area, then dust removal effectiveness is improved, but mechanical stability of the holding body deteriorates
Solution Approach 1:
The holding body is segmented into multiple aspiration cavities that are fluidically connected through through-holes. This segmentation allows dust to be collected from multiple locations simultaneously while maintaining structural integrity, as each cavity acts as an independent dust collection zone connected to the vacuum system.
Solution Approach 2:
The aspiration cavities are nested within the holding body structure, with through-holes providing fluidic connections between cavities and to the vacuum system. This nesting approach allows multiple functional elements to be integrated within the structural framework without compromising mechanical stability.
2Ease of operation
If the holding body is made thinner to reduce weight, then ease of operation is improved, but mechanical stability deteriorates
Solution Approach 1:
The holding body utilizes a thin-walled structure with integrated aspiration cavities that provide both weight reduction and functional capability. The cavities are strategically positioned and connected through through-holes to maintain structural strength while minimizing material usage.
3Productivity
If aspiration cavities are fluidically connected through multiple through-holes, then dust removal efficiency is improved, but device complexity increases
Solution Approach 1:
Multiple aspiration cavities are merged into a unified fluidic system through through-holes, allowing dust collected from various locations to be channeled through a common vacuum pathway. This merging approach improves dust removal efficiency while avoiding the complexity of multiple independent vacuum systems.
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
This configuration allows for uniform and effective dust removal over a large area, maintaining mechanical stability and high flow rates even in challenging application regions, enhancing the sanding process.
Implementation Method 1
at least one vacuuming opening that extends through the holding body from the first side to the second side thereof... designed to vacuum-off dust immediately out of an adjacent aspiration cavity
Data Source
AI summary
An abrasive-means holding device for holding an abrasive means includes a holding body that is operable to rotate about a central axis. The holding body has a first side, a second side facing away from the first side, and a vacuuming opening that extends therethrough from the first side to the second side. The holding body also has a group of aspiration cavities that are arranged on the first side and that are fluidically connected to each other by at least one through-hole that connects the aspiration cavities. At least one aspiration cavity forms a vacuuming cavity that is directly fluidically connected to the vacuuming opening and that is configured to vacuum-off dust immediately out of an adjacent aspiration cavity and mediately out of a more distantly adjacent aspiration cavity. The aspiration cavities of the group are arranged in relation to each other along a linear course.