Double Row Abrasive Disc Radial Fixing Geometry
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Solution Overview
Problem
Existing abrasive discs for grinding and polishing hard floor surfaces, such as stone and concrete, lack sufficient flexibility in adapting to different floor types and often cause circular grinding tracks when turned off.
Innovation Solution
The abrasive disc features multiple fixing means at two separate distances from the center, allowing for the arrangement of carrier plates in two rows, with conical grooves and inclined side walls for secure attachment, enabling enhanced flexibility and reduced circular grinding tracks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If detachably mounted carrier plates are used, then flexibility in exchanging abrasive elements is improved, but circular grinding tracks are still caused when turning off the machine
Solution Approach 1:
The abrasive disc is segmented into multiple rows of fixing means at different distances from the center. This segmentation allows carrier plates to be positioned in different radial zones, creating varied abrasive element distributions that prevent uniform circular track formation while maintaining the detachable carrier plate system's flexibility.
Solution Approach 2:
The invention adds a radial dimension to the carrier plate arrangement by positioning fixing means at multiple distances from the center (first row at distance r1, second row at distance r2). This multi-radial positioning creates non-uniform abrasive element distribution that disrupts circular grinding tracks while preserving exchangeable carrier plate functionality.
2Adaptability or versatility
If multiple fixing means at different distances are used, then flexibility in placement of carrier plates is improved, but device complexity increases
Solution Approach 1:
The fixing means are designed as universal grooves with conical shapes that can accommodate carrier plates at multiple radial positions. The same groove design serves multiple functions: providing mechanical retention, enabling radial positioning, and facilitating easy carrier plate attachment/detachment across different rows, thereby reducing overall system complexity despite multiple fixing locations.
Solution Approach 2:
The invention varies the radial position parameter of fixing means (creating multiple rows at different distances r1, r2, etc. from center) while maintaining consistent groove geometry and carrier plate interface design. This parameter variation increases placement flexibility without proportionally increasing structural complexity, as the same basic fixing mechanism is reused at different positions.
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 multiple configurations of abrasive elements, improving adaptability to various floor types and minimizing the occurrence of circular grinding tracks during operation.
Implementation Method 1
The shape of said groove will lead to that a carrier plate being attached therein upon rotation of an abrasive disc is pushed radially outwards from the center of said disc, which will have a wedging effect on the attachment of said carrier plate.
Data Source
AI summary
An abrasive disc (2) for grinding and/or polishing hard floor surfaces of stone, concrete or similar, the abrasive disc including a plurality of fixing means (3, 4) for mounting detachably mountable carrier plates (9), each with abrasive elements (11), to a grinding side (2a) of the abrasive disc (2), each carrier plate having a specific fixing geometry, characterized by that the fixing means are disposed at least two separate distances from the centre of the disc, first fixing means (3) at a first predetermined distance (r1) and second fixing means (4) at a second predetermined distance (r2), said second predetermined distance (r2) being shorter than the first (r1), so that the carrier plates (9) will be arranged in at least to rows, a first outer row and a second inner row, and each fixing mean (3, 4) includes a groove (7) providing a female coupling adapted for corresponding male couplings of the carrier plates (9).