Acute Angle Blade Sharpening Apparatus with Precision Stowage
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Solution Overview
Problem
Existing blade sharpening devices do not allow for sharpening at optimal angles of 22° and 23°, which are necessary for achieving a keen edge and bevel on blades like knives and scissors.
Innovation Solution
A blade sharpening apparatus with a base member that has elongated depressions at 22° and 23° angles, where multiple sharpening members are mounted and can be drawn against the blade at these angles, with a leveling instrument to ensure precise orientation and a stowage system using springs for compact storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional sharpening rods are used with fixed predetermined angles, then the blade can be sharpened to a fixed bevel, but the optimal sharpening angles of 22° and 23° cannot be achieved
Solution Approach 1:
The sharpening device is segmented into multiple independent sharpening members, each mounted at a specific predetermined angle (22° and 23°) in the base member. This segmentation allows the user to select and use different sharpening members for different sharpening stages, achieving precise angle control while maintaining ease of operation through modular design.
2Manufacturing precision
If multiple sharpening members are fixedly mounted at specific angles, then precise sharpening angles can be achieved, but the device complexity increases
Solution Approach 1:
Multiple sharpening members are merged into a single base member structure that provides both sharpening functionality and storage. The base member integrates depression cavities for holding sharpening members at precise angles and a stowage cavity for storing additional members, reducing overall device complexity while maintaining precision.
Solution Approach 2:
The base member serves multiple functions: it provides fixed angular mounting for sharpening members, stores additional sharpening members in depression cavities, and includes a stowage cavity for compact storage. This multi-functionality reduces the need for separate components, simplifying the overall device structure.
3Volume of moving object
If sharpening members are stored in the base member, then compact storage is achieved, but the ease of accessing and replacing members may be reduced
Solution Approach 1:
The sharpening members are designed to be easily extracted from the depression cavities in the base member. The depression cavities hold the members securely during storage but allow for quick and easy removal when needed, balancing compact storage with ease of accessibility for member replacement.
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
Enables sharpening of blades at specific acute angles, maintaining a professional cutting edge without removing excess material, allowing for both left and right-handed operation, and compact storage, while being inexpensive and power-free.
Implementation Method 1
stowing the sharpening members between springs in the depression in the second side of the base member
Data Source
AI summary
An acute angle blade sharpening apparatus and method for sharpening blades is configured to sharpen the edge and bevel of a blade at the specific acute angles between 21° and 23°, or about 22° and 23°. The apparatus has a base member forming multiple elongated depressions oriented at 22° and 23°. Multiple elongated sharpening members are fixedly mounted in the depressions. The blade is oriented perpendicular to the first side of the base member and drawn against the sharpening members, to engage at the desired 22° and 23° sharpening angles. A leveling instrument attaches to the blade to verify the blade is oriented at the desired angles. A leveling instrument cavity stores the leveling instrument and fastener. Springs retain the sharpening members in the cavity of the base member when not in use. A clamp fastens the base member to a mounting surface for enhanced stability.