Wheel Brush Protrusions Prevent Grinding Element Breaking
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Solution Overview
Problem
The existing wheel brushes tend to cause breaking of wire-shaped grinding elements due to expansion in the rotational center line direction during operation, leading to a reduction in grinding force and effectiveness.
Innovation Solution
The wheel brush design includes a grinding element bundle holder with protrusions on the opening edges of holding holes to prevent excessive expansion and bending of grinding element bundles, combined with a flattened cross-sectional shape and adhesive anchoring to secure the bundles, facilitating deflection and reducing the risk of breaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wheel brush is rotated during work operation, then the grinding element bundles can polish and grind the workpiece, but the grinding element bundles expand in the rotational center line direction causing breaking of wire-shaped grinding elements
Solution Approach 1:
The patent applies preliminary anti-action by providing protrusions on the grinding element bundle-holding surface that prevent the grinding element bundles from expanding in the rotational center line direction before the breaking occurs. These protrusions create a preliminary constraint that counteracts the expansion force generated during rotation, thereby preventing the bending and breaking of wire-shaped grinding elements while maintaining the grinding and polishing capability.
2Adaptability or versatility
If the grinding element bundles are allowed to expand freely, then the wire-shaped grinding elements can deflect to follow the workpiece surface, but excessive expansion causes breaking of the grinding elements
Solution Approach 1:
The patent applies local quality by providing protrusions at specific locations on the grinding element bundle-holding surface, specifically at the outer circumferential side in the rotational center line direction. These localized protrusions constrain expansion only where necessary to prevent breaking, while allowing deflection in other directions to maintain adaptability to the workpiece surface.
3Reliability
If protrusions are added to the grinding element bundle holder to prevent expansion, then breaking of grinding elements is suppressed, but the device complexity increases
Solution Approach 1:
The patent applies this principle by making the grinding element bundle holder from a flexible or elastic material that can deform to allow necessary deflection of grinding element bundles while the protrusions provide structural guidance to prevent excessive expansion in the rotational center line direction. This maintains reliability while minimizing added complexity.
Data Source
AI summary
A wheel brush (1) includes a grinding element bundle holder (3) having an annular grinding element bundle-holding surface (12) that faces the outer circumferential side and a plurality of grinding element bundles (4) that are formed by gathering a plurality of wire-shaped grinding elements (5). The grinding element bundle-holding surface (12) has a plurality of holding holes (16) arrayed in a circumferential direction (R), the grinding element bundles (4) protrude to the outer circumferential side from the grinding element bundle-holding surface (12) while one end portions are inserted into the holding holes (16). First protrusions (18) protruding to the outer circumferential direction are provided on first opening edge portions (17a) adjacent to the holding holes 16 at a first direction (L1) side in the rotational center line direction orthogonal to the circumferential direction R (R) in opening edges of the holding holes (16) in the grinding element bundle-holding surface (12). The first protrusions (18) are continuous in the circumferential direction R (R) to configure an annular first flange portion (19).