Abrasive Material With Orientation-Independent Pyramidal Elements
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Solution Overview
Problem
Existing abrasive materials have orientation-dependent abrasion performance, leading to suboptimal cutting surface area and prolonged initiation time, which limits their effectiveness in sanding and polishing applications.
Innovation Solution
The development of an abrasive material with elongate pyramidal elements arranged in sets that form intersection angles, ensuring orientation-independent abrasion performance and maximizing contact area, regardless of the material's orientation. This is achieved by grouping abrasive elements into sets with planes that intersect at specific angles, allowing for complementary cutting edge orientations and reduced areal density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If abrasive elements are arranged in a single orientation, then the areal density can be increased, but the abrasion performance becomes orientation-dependent and contact area is reduced when not aligned with the substrate
Solution Approach 1:
The abrasive elements are segmented into multiple sets (first set and second set) with different orientations. Each set is arranged at a different angle relative to the backing layer, allowing the abrasive material to maintain effective cutting edges regardless of the orientation of application. This segmentation resolves the contradiction by distributing abrasive elements across multiple orientations rather than concentrating them in a single direction.
Solution Approach 2:
The abrasive elements exhibit asymmetric geometric features with elongate cutting edges that are optimized for cutting in specific directions. By arranging these asymmetric elements in multiple sets with different orientations, the system ensures that at least one set will be optimally oriented for cutting regardless of the overall orientation of the abrasive material relative to the substrate.
2Loss of time
If abrasive elements are arranged to maximize contact area in all orientations, then the initiation time is reduced, but the areal density of effective cutting edges is reduced
Solution Approach 1:
The system dynamically adapts to the orientation of application through its multi-set configuration. As the abrasive material is applied to the substrate, the set of abrasive elements that is optimally oriented for cutting becomes active, while other sets may be less effective. This dynamic adaptation ensures immediate effectiveness without requiring all abrasive elements to be oriented for maximum contact area in all directions simultaneously.
Solution Approach 2:
The invention changes the orientation parameter of abrasive elements by providing multiple sets at different angles. This parameter variation allows the system to maintain effective cutting capability across different application orientations, reducing initiation time while accepting that the areal density of optimally-oriented cutting edges at any given moment will be comparable to or less than single-orientation arrangements.
Data Source
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AI summary
Described herein is an improved abrasive material (300) in which the cutting performance is orientation-independent. The abrasive material (300) comprises an abrasive structure (310) including a plurality of elongate abrasive elements (320, 330) aligned to be define a first open square. A plurality of pyramidal abrasive elements (340, 350) arranged in a second open square are located within the first open square defined by the elongate elements (320, 330).