Compact Grinding Wheel for Skate Sharpening
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Solution Overview
Problem
Conventional skate blade sharpening systems face limitations due to large size, high power consumption, mechanical imperfections, and high costs, leading to suboptimal sharpening results and increased costs for maintenance.
Innovation Solution
A skate blade sharpening system utilizing a metal grinding ring with an abrasive-coated outer surface mounted on a lightweight thermoplastic hub, which reduces mechanical imperfections and costs while improving precision, combined with efficient heat dissipation and cooling features to maintain optimal operating temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional large grinding wheel is used, then the sharpening system has sufficient heat sinking ability, but the system becomes large in size with high power consumption and mechanical imperfections
Solution Approach 1:
The grinding wheel is segmented into two separate components: a lightweight hub made of thermoplastic material and a grinding ring with abrasive coating. This segmentation allows the grinding ring to be smaller and lighter while the hub provides structural support and mounting functionality, resolving the contradiction between weight and functional performance.
Solution Approach 2:
The invention uses composite construction by combining thermoplastic material for the hub with a metal grinding ring that has abrasive coating. This composite approach allows the hub to be lightweight while the grinding ring provides the necessary grinding function, achieving both weight reduction and maintained heat sinking ability through the metal ring's thermal properties.
2Manufacturing precision
If a conventional solid metal grinding wheel is used, then the wheel has high precision and durability, but the cost becomes very high
Solution Approach 1:
By segmenting the grinding wheel into a hub and a grinding ring, the invention allows the expensive precision components (grinding ring with abrasive coating) to be separate from the structural hub. This enables cost-effective manufacturing where the thermoplastic hub can be produced more economically while the grinding ring is precisely manufactured only where needed for the grinding function.
Solution Approach 2:
The grinding ring with abrasive coating is designed as a replaceable component that can be worn and then replaced, rather than requiring the entire grinding wheel to be replaced. This approach reduces long-term costs by allowing only the consumable abrasive portion to be replaced, making the system more economically sustainable.
3Weight of moving object
If a lightweight hub material is used, then the grinding wheel weight is reduced and precision is improved, but heat dissipation ability decreases
Solution Approach 1:
The segmentation of the grinding wheel into hub and grinding ring allows the metal grinding ring to serve as a heat dissipation pathway. Even though the hub is lightweight thermoplastic material, the metal ring component provides thermal conduction to dissipate heat generated during grinding, compensating for the lower thermal mass of the hub.
Solution Approach 2:
The metal grinding ring acts as an intermediary thermal pathway between the grinding contact point and the environment. It conducts heat away from the grinding interface despite the thermoplastic hub having lower heat capacity, effectively mediating the heat transfer process to maintain adequate heat dissipation.
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
The system achieves more precise and cost-effective skate blade sharpening with reduced mechanical imperfections and lower maintenance costs, enhancing skating performance without severe cost penalties.
Implementation Method 1
a metal grinding ring having an abrasive-coated outer surface for contacting a skate blade to be sharpened during sharpening
Implementation Method 2
the metal arbor contacts a metal edge of the grinding ring very close to the grinding surface, promoting efficient heat transfer to the arbor
Implementation Method 3
the arbor may be configured with vane features so as to generate air flow around the arbor and grinding ring during operation, providing greater convective cooling for heat dissipation
Data Source
AI summary
A grinding wheel for use in a skate blade sharpening system includes a metal grinding ring having an abrasive-coated outer surface for contacting a skate blade to be sharpened during sharpening, and a generally disk-shaped hub to which the grinding ring is fixedly mounted. The hub and grinding ring are configured for mating with an arbor on a rotating shaft of the skate blade sharpening system. Generally the hub is of a less expensive and lower-density material than the grinding ring. In one embodiment, the hub is of a lightweight material such as thermoplastic.