Skate Blade Sharpening System with Visual Alignment Adjustment
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Solution Overview
Problem
Existing skate sharpening systems rely on trial-and-error methods for aligning the grinding wheel with the skate blade, leading to inefficiencies, inconsistencies, and potential damage due to mechanical coupling issues and difficult-to-reach user controls.
Innovation Solution
A skate blade sharpening system with a clamp for precise skate blade retention, a motor-driven rotating shaft for the grinding wheel, and an alignment mechanism using visual reference features to align the grinding wheel with the skate blade before sharpening, allowing for accurate initial alignment and decoupling of adjustment from pivoting motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If trial-and-error alignment techniques are used, then the grinding wheel can be aligned with the skate blade, but the process is time-consuming and requires multiple sharpening cycles
Solution Approach 1:
The patent applies preliminary action by providing visual alignment indicators (such as alignment marks or optical references) that allow the operator to align the grinding wheel with the skate blade before the sharpening process begins. This eliminates the need for trial-and-error cycles during sharpening, as the wheel is pre-aligned using the visual indicators, thereby reducing total sharpening time while maintaining alignment accuracy.
Solution Approach 2:
The patent replaces mechanical alignment measurement methods (such as physical gauges or calipers) with visual alignment indicators. This substitution allows for faster, more intuitive alignment without requiring complex mechanical measurement tools or multiple test sharpenings, thus reducing time loss while achieving precise alignment.
2Reliability
If locking mechanisms are used to secure alignment, then the position can be fixed, but the mechanisms may shift after adjustment introducing error
Solution Approach 1:
The patent segments the alignment system into independent components: visual alignment indicators for setting the position, and a separate locking mechanism for securing it. The visual indicators remain stationary and unaffected by the locking mechanism's potential shifting, allowing the operator to reference them again if needed. This segmentation isolates the precision reference from the potential instability of the locking mechanism.
Solution Approach 2:
The patent introduces visual alignment indicators as an intermediary reference system that mediates between the adjustable grinding wheel and the fixed skate blade. These indicators provide a stable visual reference that is not directly coupled to the mechanical locking mechanism, allowing the operator to verify and re-establish alignment even if the locking mechanism shifts slightly.
3Adaptability or versatility
If adjustment mechanisms are placed for user control, then alignment can be modified, but the controls are difficult to reach and adjust
Solution Approach 1:
The patent relocates the adjustment controls from a horizontal or vertically distant position to a position within easy reach of the operator, typically on the same panel or surface where the operator's hands naturally rest during operation. This spatial repositioning in another dimension (within arm's reach zone) maintains full adjustability while dramatically improving ease of operation.
4Adaptability or versatility
If mechanical coupling exists between position adjustment and pivoting mechanism, then the grinding wheel can follow the blade edge, but smooth pivoting is interfered with creating inconsistent grinding forces
Solution Approach 1:
The patent segments the mechanical system into independent adjustment and pivoting mechanisms. The position adjustment mechanism controls the lateral position of the grinding wheel relative to the blade centerline, while the pivoting mechanism independently controls the wheel's angular follow-up to the blade edge. This segmentation eliminates mechanical coupling, allowing smooth pivoting without interference from the adjustment mechanism, thereby ensuring consistent grinding forces while maintaining the wheel's ability to follow the blade edge.
Data Source
AI summary
A skate blade sharpening system retains a skate blade in a sharpening position whose centerline has a first location relative to a first visual reference feature. A motor-driven rotating shaft has a wheel-mounting location for mounting a grinding wheel for sharpening operation. The shaft accepts an alignment wheel at the wheel-mounting location during an alignment, the alignment wheel having a second visual reference feature having a second location relative to a centerline of the grinding wheel when occupying the wheel-mounting location. An adjustment mechanism moves the shaft transversely during alignment to vary relative position between the wheel-mounting location and the sharpening position including an aligned position in which the centerline of the grinding wheel is aligned with the centerline of the sharpening position, the aligned position being indicated by alignment of the first visual reference feature with the second visual reference feature during alignment.