An adaptive sharpening structure
By designing an adaptive grinding structure, the problems of narrow applicability and poor grinding effect of existing grinding devices are solved. It enables efficient grinding of blades with different thicknesses and angles, improves grinding accuracy and efficiency, and extends the service life of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUYAO NORTON ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-06-23
AI Technical Summary
Existing sharpening devices have a narrow range of applications, cannot meet the sharpening needs of blades with different thicknesses and angles, have poor sharpening effects, lack structural flexibility, and cannot automatically adjust to improve sharpening efficiency and quality.
An adaptive grinding structure was designed, including a rotating base and a grinding component. The grinding surface is inclined to adaptively fit the cutting edge. A preload is provided by an elastic reset component to ensure effective contact between the grinding surface and the cutting edge. A double grinding wheel structure is adopted to improve grinding efficiency.
It enables adaptive grinding of cutting edges with different thicknesses and angles, improving grinding accuracy and efficiency, extending the service life of the device, and ensuring consistent and efficient grinding quality.
Smart Images

Figure CN224390835U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of knife sharpener technology, and more specifically to an adaptive knife sharpening structure. Background Technology
[0002] Existing sharpening devices have many problems, such as a narrow range of application, only able to sharpen blades of specific sizes and angles, making it difficult to meet the sharpening requirements of blades of different thicknesses and angles; poor sharpening effect, with insufficient contact between the blade and the sharpening surface, resulting in incomplete sharpening and failing to effectively improve the sharpness of the tool; and a lack of structural flexibility, as the sharpening surface cannot automatically adjust according to the shape and angle of the blade, affecting sharpening efficiency and quality. Utility Model Content
[0003] To address the shortcomings and defects of existing technologies, an adaptive grinding structure is provided that is suitable for various tool grinding needs and has a better grinding effect.
[0004] An adaptive sharpening structure includes:
[0005] A rotating base, configured to rotate along axis A;
[0006] The grinding component, mounted on the rotating base, has at least one grinding surface.
[0007] The blade cuts along axis A until it contacts the side surface of the grinding surface.
[0008] In the initial position, the path of the grinding surface pointing towards the blade is inclined, and a distance b is formed between the grinding surface and the blade. The distance b is set to vary from large to small or from small to large along the path of the blade.
[0009] The blade applies a force to the grinding surface, causing the rotating seat to rotate, so that the grinding surface rotates coaxially with the rotating seat, thereby changing the distance b to adaptively fit the blade.
[0010] With the above structure, the adaptive sharpening structure of this utility model has the following advantages compared with the prior art: when in use, the blade is moved along the direction of axis A until one side of the blade contacts the sharpening surface;
[0011] In the initial position, the path of the grinding surface pointing towards the cutting edge forms a distance b between it and the cutting edge. This distance b varies from large to small or from small to large along the path of the cutting edge. Preferably, the distance b can be a negative distance or an extremely small distance when it is at its minimum.
[0012] After the blade contacts the grinding surface, it applies a force to the grinding surface. To counteract the force, the rotating seat drives the grinding surface to rotate, thereby adjusting the distance b between the grinding surface and the blade, so that it can fit the blade. When the preferred distance b is set as described above, the distance b is usually increased after the blade enters to fit the blade. The distance b mentioned above refers to the distance b between the grinding surface and the blade at the point of contact.
[0013] Furthermore, by moving the tool back and forth, the grinding surface rubs against the cutting edge, thus achieving a grinding effect on the cutting edge.
[0014] Traditional knife sharpening structures mostly have fixed sharpening surfaces, which cannot automatically adjust according to the thickness, shape, and angle of the blade, resulting in sharpening effects that do not meet requirements.
[0015] In this application, the grinding surface can change position along with the rotating base to adjust the distance b between itself and the cutting edge, thereby adaptively conforming to the cutting edge. The grinding surface adaptively obtains an effective contact area with the cutting edge, which improves the accuracy and effect of sharpening during the sharpening operation, and can also meet the grinding needs of cutting edges with different thicknesses and angles.
[0016] As an improvement of this utility model, the rotating seat is connected to an elastic reset member, which applies a preload force to the rotating member, causing it to tend to remain in its initial position.
[0017] As an improvement of this utility model, the elastic reset member is a helical spring, one end of which is connected to one side of the circumferential direction of the rotating seat, and the other end is connected to a connecting member away from the rotating seat.
[0018] As an improvement of this utility model, the grinding component consists of two grinding wheels rotatably connected to a rotating seat. The two grinding wheels are coaxially arranged, and the rotation axis C of the grinding wheels intersects with and is perpendicular to the axis A.
[0019] The inner, opposite end faces of the two grinding wheels serve as the grinding surfaces, and a tool groove is formed between them.
[0020] As an improvement of this utility model, the midpoint between the two grinding surfaces coincides with axis A, and the distance b between the two grinding surfaces and the cutting edge path is set in a rotationally symmetrical manner along axis A. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model.
[0022] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0023] Figure 3 This is a schematic diagram showing the positional relationship between the grinding surface and the cutting edge path of this utility model.
[0024] Figure 4 This is a schematic diagram illustrating an embodiment of the present invention.
[0025] The figure shows: 1. Rotating seat; 2. Grinding component; 2.1. Grinding surface; 2.11. Grinding wheel; 3. Elastic reset component; 4. Cutting tool; 4.1. Cutting edge. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0027] Please see Figure 1-4 As shown, an adaptive sharpening structure includes:
[0028] Rotating seat 1 is configured to rotate along axis A;
[0029] The grinding component 2, mounted on the rotating seat 1, has at least one grinding surface 2.1.
[0030] The cutting edge 4.1 cuts along axis A until it contacts the side surface 2.1.
[0031] In the initial position, the grinding surface 2.1 is inclined towards the cutting edge 4.1, and there is a gap between it and the cutting edge 4.1. The gap is set to vary from large to small or from small to large along the path of the cutting edge 4.1.
[0032] The blade 4.1 applies a force to the grinding surface 2.1, causing the rotating seat 1 to rotate, so that the grinding surface 2.1 rotates coaxially with the rotating seat 1, thereby changing the distance to adaptively fit the blade 4.1.
[0033] When in use, move the blade 4.1 along axis A until one side of the blade 4.1 contacts the grinding surface 2.1;
[0034] In the initial position, the grinding surface 2.1 is inclined towards the cutting edge 4.1, forming a gap between them. The gap varies from large to small or from small to large along the path of the cutting edge 4.1. Preferably, the gap is set to be negative or extremely small in the minimum case.
[0035] After the blade 4.1 contacts the grinding surface 2.1, it applies a force to the grinding surface 2.1. To counteract the force, the rotating seat 1 drives the grinding surface 2.1 to rotate, thereby adjusting the distance between it and the blade 4.1, so that it can fit the blade 4.1. When the preferred distance is set as described above, the distance usually increases after the blade 4.1 enters to fit the blade 4.1. The distance mentioned above refers to the distance between the grinding surface 2.1 and the blade 4.1 at the point of contact.
[0036] Furthermore, by moving the cutting tool 4 back and forth, the grinding surface 2.1 rubs against the cutting edge 4.1, which can achieve the grinding effect on the cutting edge 4.1.
[0037] Traditional sharpening structures often feature a fixed grinding surface 2.1, which cannot automatically adjust according to the thickness, shape, and angle of the blade 4.1, resulting in unsatisfactory sharpening effects. In this application, the grinding surface 2.1 can move in position along with the rotating base 1 to adjust the distance between itself and the blade 4.1, thereby adaptively conforming to the blade 4.1. The grinding surface 2.1 adaptively obtains an effective contact area with the blade 4.1, improving the accuracy and effect of sharpening during sharpening operations, and also meeting the grinding requirements of blades 4.1 with different thicknesses and angles.
[0038] Please see Figure 1-2 As shown, the rotating seat 1 is connected to an elastic reset member 3. The elastic reset member 3 applies a preload force to the rotating member, causing it to tend to remain in its initial position.
[0039] In the existing grinding structure, the tool 4 is prone to deviating from its initial position during the grinding process, and the misalignment between it and the grinding surface 2.1 leads to a decrease in grinding accuracy.
[0040] In this application, the elastic reset element 3 provides a preload to the rotating seat 1. When the tool 4 deviates, the rotating seat 1 also rotates adaptively, thereby keeping the grinding surface 2.1 in contact with the cutting edge 4.1. This helps to improve the consistency and accuracy of grinding and reduce the problem of insufficient or excessive grinding caused by positional deviation.
[0041] Of course, the preload force during the sharpening process can also directly cause the grinding surface 2.1 to press against the cutting edge 4.1, thereby improving the grinding effect.
[0042] Traditional grinding structures will cause wear on the grinding surface 2.1 as the number of grinding cycles increases. After the grinding surface 2.1 wears down, it can no longer maintain effective and consistent contact with the cutting edge 4.1, which reduces the grinding quality.
[0043] After the above improvements, even if the grinding surface 2.1 is worn, the preload of the elastic reset member 3 can still keep the grinding surface 2.1 and the cutting edge 4.1 in effective contact, extend the service life of the device, and ensure stable grinding quality.
[0044] In addition, after the cutting tool 4 is finished grinding and removed, the preload of the elastic reset member 3 drives the rotating seat 1 to rotate to the reset position. When the cutting edge 4.1 comes into contact with the grinding next time, the grinding surface 2.1 can also form an angle with the path of the cutting edge 4.1, so that the rotating seat 1 can also rotate to make the grinding surface 2.1 fit against the cutting edge 4.1, so that the device can stably and reliably play the role of adaptive grinding.
[0045] The elastic reset component 3 is a helical spring. One end of the helical spring is connected to one side of the rotating seat 1 around the circumference, and the other end is connected to a connector away from the rotating seat 1.
[0046] Helical springs have advantages such as simple structure, high reliability, and easy control of elastic force. When applied to this application, they can accurately provide preload to the rotating seat 1, ensuring that the rotating seat 1 is stably maintained in the initial position during grinding and quickly reset after grinding.
[0047] Please see Figure 2-4 As shown, the grinding component 2 consists of two grinding wheels 2.11 rotatably connected to the rotating seat 1. The two grinding wheels 2.11 are coaxially arranged, and the rotation axis C of the grinding wheels 2.11 intersects with and is perpendicular to the axis A.
[0048] The inner opposite end faces of the two grinding wheels 2.11 serve as the grinding surface 2.1, and a tool groove is formed between them. When the cutting edge 4.1 moves along the axis A, it can stably enter the tool groove and contact the grinding surface 2.1, making the device operate reliably.
[0049] Compared with the sharpening method with a single sharpening surface 2.1, the double grinding wheel 2.11 structure of this utility model has two sharpening surfaces 2.1, which can simultaneously contact both sides of the blade 4.1, thus significantly improving sharpening efficiency and quality.
[0050] The midpoint between the two grinding surfaces 2.1 coincides with axis A, and the distance between the two grinding surfaces 2.1 and the path of the cutting edge 4.1 is set in a rotationally symmetrical manner along axis A.
[0051] In this design, the axis of the grinding wheel 2.11 is tilted and offset from the path of the cutting edge 4.1. After the cutting edge 4.1 enters the tool holder, the front grinding surface 2.1 of the left grinding wheel 2.11 is adjusted to fit against the left side of the cutting edge 4.1, and the rear grinding surface 2.1 of the right grinding wheel 2.11 is adjusted to fit against the right side of the cutting edge 4.1. The fitting positions are staggered, so that it can contact both sides of the cutting edge 4.1 at the same time, thus achieving the grinding effect.
[0052] In traditional grinding wheels, the path of the grinding wheel 2.11 is perpendicular to that of the cutting edge 4.1. After the cutting edge 4.1 enters the tool holder groove, if the tool 4 is thin, the two sides of the cutting edge 4.1 cannot simultaneously contact the grinding surface 2.1, thus failing to perform consistent and efficient grinding.
[0053] Furthermore, in this application, the grinding surface 2.1 is a conical surface, which can adjust the contact area according to different adaptive settings to maintain effective contact with the cutting edges of various tools 4. While ensuring the uniformity and effect of grinding, it can meet the grinding needs of various tools 4.
[0054] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. An adaptive sharpening structure, characterized in that, include: Rotary seat (1) is configured to rotate along axis A; The grinding component (2) is disposed on the rotating seat (1) and has at least one grinding surface (2.1). The cutting edge (4.1) cuts along axis A until it contacts the side surface (2.1). In the initial position, the path of the grinding surface (2.1) pointing towards the cutting edge (4.1) is inclined, and a distance b is formed between the grinding surface (2.1) and the cutting edge (4.1). The distance b is set to vary from large to small or from small to large along the path of the cutting edge (4.1). The blade (4.1) applies a force to the grinding surface (2.1), causing the rotating seat (1) to rotate, so that the grinding surface (2.1) rotates coaxially with the rotating seat (1), thereby changing the distance b to adaptively fit the blade (4.1).
2. The adaptive grinding structure according to claim 1, characterized in that: It also includes an elastic reset member (3), which is connected to the rotating seat (1) and applies a preload to the rotating seat (1) to drive it to tend to remain in the initial position.
3. The adaptive grinding structure according to claim 2, characterized in that: The elastic reset component (3) is a helical spring. One end of the helical spring is connected to one side of the rotating seat (1) in the circumferential direction, and the other end is connected to a connector away from the rotating seat (1).
4. The adaptive grinding structure according to claim 1, characterized in that: The grinding component (2) consists of two grinding wheels (2.11) rotatably connected to the rotating seat (1). The two grinding wheels (2.11) are coaxially arranged, and the rotation axis C of the grinding wheel (2.11) intersects with the axis A and is perpendicular to each other. The inner opposite end faces of the two grinding wheels (2.11) serve as the grinding surfaces (2.1), and a tool groove is formed between them.
5. The adaptive grinding structure according to claim 4, characterized in that: The midpoint between the two grinding surfaces (2.1) coincides with axis A, and the distance b between the two grinding surfaces (2.1) and the path of the cutting edge (4.1) is set in a rotationally symmetrical manner along axis A.