Fixed-Angle Sharpener with Sliding Angle Block for Consistent Blade Curves
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Solution Overview
Problem
Existing fixed-angle sharpeners fail to adjust the angle between a sharpening stone and a blade by adjusting a sharpening stone to the left or right, leading to inconsistent angles and curves during the sharpening process due to changes in the included angle between the sharpening stone and the blade.
Innovation Solution
A fixed-angle sharpener with an angle adjusting mechanism that includes an angle block, angle wheel, and angle fixing assembly, allowing for precise angle adjustment and fixation, combined with a height adjustment mechanism to ensure consistent sharpening angles regardless of cutter width, length, or curve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the angle between the sharpening stone and the blade is adjusted by adjusting the height of the sharpening bar assembly, then the sharpening angle can be changed, but the included angle between the sharpening stone and the blade changes during sharpening movement, resulting in inconsistent blade curves
Solution Approach 1:
The sharpening bar assembly is divided into separate functional components: an angle adjusting mechanism with an angle block and angle wheel for setting the sharpening angle, and a height adjusting mechanism for positioning. This segmentation allows independent control of angle and height, preventing angle changes during sharpening movement and ensuring consistent blade curves.
2Ease of operation
If the sharpening bar assembly is moved to the left or right after angle adjustment, then the sharpening position can be changed, but the included angle between the sharpening stone and the blade changes, resulting in inconsistent blade curves
Solution Approach 1:
The angle fixing function is extracted from the height adjustment mechanism and implemented through a dedicated angle fixing assembly with angle holes and positioning holes. This separate angle fixation system ensures that once the sharpening angle is set, it remains constant during left-right movement of the sharpening bar assembly, maintaining consistent blade curves.
3Device complexity
If the angle block is fixed in position, then the angle can be easily adjusted, but the sharpening stone cannot adapt to different cutter widths, lengths, or curves
Solution Approach 1:
The angle block is designed to move up and down along the supporting body while the angle wheel maintains the fixed sharpening angle setting. This dynamic design allows the sharpening stone to adapt to different cutter widths, lengths, and curves by adjusting vertical position, while the angle remains consistently fixed by the angle wheel mechanism.
Data Source
AI summary
A fixed-angle sharpener which includes a supporting body, an angle block, an angle wheel, an angle fixing assembly and a sharpening mechanism. The angle block is mounted to the supporting body, the angle block can rotate and move up and down, the angle wheel is connected to the angle block, the angle wheel can rotate, and the angle wheel is fixed by the angle fixing assembly after rotating for angle adjustment. The sharpening mechanism includes a sharpening bar assembly, and the sharpening bar assembly is connected with the angle wheel. When the cutter is sharpened by using the sharpener, the angle of the sharpening bar assembly is adjusted and fixed, the angle block can slide up and down during the sharpening process, and in this way, a consistent sharpening angle can be achieved by moving up and down as a whole regardless of a shape of the cutter.