Sharpening Guide With Movable Bar For Curved Blades
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Solution Overview
Problem
Existing sharpening guides struggle to maintain a constant starting angle during tool blade sharpening, particularly for curved blades, and are difficult to use with chisels and plane cutters with curved blades.
Innovation Solution
A sharpening guide with a movable bar that adjusts the starting angle and includes alignment marks, a magnet for secure attachment, and a height-adjustable body to accommodate blades of varying thickness, ensuring a consistent sharpening angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed blade guide is used to maintain constant sharpening angle, then sharpening angle consistency is improved, but curved blades cannot be sharpened easily
Solution Approach 1:
The guide bar is made movable relative to the top part, allowing it to be positioned at different locations along the top part. This dynamic positioning capability enables the guide bar to accommodate both straight and curved blades while maintaining the desired sharpening angle, thus resolving the contradiction between angle consistency and curved blade compatibility
2Measurement precision
If the bar position is fixed to provide a specific sharpening angle, then angle precision is improved, but adjustability for different angles is reduced
Solution Approach 1:
The guide bar can be moved to different positions along the top part, and each position corresponds to a specific sharpening angle. This dynamic positioning system allows users to adjust the bar to achieve precise angle control while maintaining the ability to change angles as needed, resolving the contradiction between angle precision and adjustability
3Device complexity
If the body height is fixed, then structural simplicity is improved, but adaptability to blades of different thicknesses is reduced
Solution Approach 1:
The body height is made adjustable, allowing users to modify the height according to the thickness of the blade being sharpened. This dynamic height adjustment capability enables the device to accommodate blades of various thicknesses while maintaining relatively simple structural design, thus resolving the contradiction between structural simplicity and blade thickness adaptability
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
Facilitates easy and precise sharpening of both curved and straight blades by maintaining a constant starting angle, allowing for adjustable and visually verified adjustments, and accommodating blades of different thicknesses.
Implementation Method 1
a magnet (9) is installed on the base (2) of the sharpening guide (1) so that the sharpening guide (1) can be attached to the blade (100) to be sharpened by means of the magnet (9)
Data Source
Figure 1A~1C
Figure 2~3
Figure 4A~4B
AI summary
The objective of the invention is to enable that the starting angle of sharpening is made constant and to facilitate the sharpening of especially curved blades. A sharpening guide (1) according to the invention for the sharpening of a tool blade (100) comprises a body (2) equipped with a magnet (9) at its base, where an elongated bar (4) is installed in the top part (3) of the body (2), which elongated bar (4) extends through the top part (3), whereby the sharpening guide (1) is fastenable on the blade (100) to be sharpened by means of the magnet (9) so that the bar (4) forms an essentially right angle relative to the blade line (101) when a reference end (400) of the bar (4) touches the surface of the honing device against which the blade to be sharpened is swept. The sharpening of curved blades, such as blades of sheath knives or chisels with a curved blade, is facilitated by means of the sharpening guide. The sharpening guide also enables the easy sharpening of straight blades.