Adjustable Roller Sharpener for Uniform Knife Edge Angles
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Solution Overview
Problem
Existing knife sharpeners fail to provide adjustable angles and heights for sharpening different-sized blades effectively, leading to uneven sharpening and reduced durability of knife edges.
Innovation Solution
An adjustable magnetic knife holder with variable angle and height assemblies, combined with a rolling knife sharpener, allows for precise angle and height adjustments, using interchangeable grinding members like diamond and ceramic plates for optimal sharpening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed angle and height knife sharpener is used, then the structure is simple, but it cannot accommodate different-sized blades of different knives effectively
Solution Approach 1:
The knife sharpener incorporates adjustable angle and height mechanisms that allow dynamic reconfiguration. The angle assembly enables adjustment between 10°-40° in 10° increments, and the height assembly allows vertical adjustment of the grinding member, transforming a static device into a dynamic one that adapts to different blade sizes and knife types
Solution Approach 2:
The sharpener is designed with universal adaptability to handle various knife types and blade sizes through its adjustable mechanisms. The same device can accommodate different blade geometries by adjusting angles and heights, making it a multi-functional tool for diverse sharpening needs without requiring multiple specialized devices
2Manufacturing precision
If non-adjustable magnetic knife holder is used, then the device is simpler, but it cannot provide precise angle control for optimal sharpening
Solution Approach 1:
The magnetic knife holder integrates a dynamic angle adjustment mechanism with a lead screw and slider system that allows precise angular positioning. The torsion spring provides pre-tensioning to maintain stable magnetic holding while enabling smooth angle changes, achieving precise angle control through a controlled mechanical adjustment process
Solution Approach 2:
The system enables precise control of the sharpening angle parameter by allowing adjustment between 10°-40° in 10° increments. The lead screw mechanism transforms rotational motion into precise linear displacement of the angle member, thereby controlling the angular parameter with high precision for optimal sharpening results
3Manufacturing precision
If fixed height grinding member holder is used, then the structure is simpler, but it cannot sharpen different-sized blades uniformly
Solution Approach 1:
The grinding member holder incorporates a dynamic height adjustment mechanism with a thumb knob assembly that allows vertical repositioning of the grinding member. This enables the system to adapt to different blade thicknesses and sizes, ensuring uniform sharpening contact across various knife types while maintaining a relatively simple mechanical structure
Solution Approach 2:
The height adjustment mechanism allows preliminary positioning of the grinding member at the appropriate vertical height before sharpening begins. The thumb knob assembly enables quick pre-adjustment to the correct height, ensuring that the blade makes proper contact with the grinding surface from the start of the sharpening process
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
Achieves exceptionally sharp and long-lasting knife edges by ensuring uniform sharpening across the blade, accommodating various knife sizes and types, with rapid sharpening and maintenance capabilities.
Implementation Method 1
a magnetic knife holder configured to hold the blade of the knife at one or more angles
Implementation Method 2
a plate holder magnet carried by the height adjustment member and configured to magnetically hold the blade edge grinding member
Data Source
AI summary
A roller sharpener including a blade edge grinding member to sharpen an edge of a blade of a knife comprising a magnetic knife holder configured to hold the blade of the knife at one or more angles; and an adjustable roller sharpener configured to hold the blade edge grinding member at variable heights to sharpen different-sized blades of different knives, the adjustable roller sharpener with grinding member rollable back and forth on a support surface to sharpen the edge of the blade of the knife held to the magnetic knife holder.