Knife sharpener capable of rapidly adjusting angle

By designing angle adjustment components for the fixed cylinder, rotating cylinder, and clamping mechanism, the problems of low efficiency and low precision in the angle adjustment of the sharpener were solved, achieving fast, precise angle adjustment and consistent grinding results.

CN223989326UActive Publication Date: 2026-03-13JINHUA PAN AMERICAN TRADING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-02
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Existing sharpening tools are inefficient and inaccurate when adjusting angles, and require auxiliary tools, resulting in poor angle consistency.

Method used

An angle adjustment assembly comprising a fixed cylinder, a rotating cylinder, a fixed body, and a clamping mechanism has been designed. The assembly enables rapid and precise angle adjustment through positioning holes and positioning bolts. Combined with a grinding disc assembly and a motor or guide rod assembly, it enables automatic or manual grinding.

Benefits of technology

It enables fast and precise angle adjustment, improves grinding efficiency and angle consistency, and reduces reliance on auxiliary tools.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223989326U_ABST
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Abstract

The utility model provides a knife sharpener with a fast angle adjusting function, which relates to the technical field of knife sharpeners and comprises a grinding disc component and an angle adjusting component, the angle adjusting component comprises a fixing cylinder, a rotating cylinder, a fixing body and a clamping mechanism, the fixing cylinder and the rotating cylinder are both provided with a plurality of positioning holes, the rotating cylinder can rotate, and the fixing body is fixed on the grinding disc component. The relative position of the cutter and the fixing cylinder is adjusted, the fixing body can be inserted into positioning holes in the fixing cylinder and the rotating cylinder, the clamping mechanism is connected with the rotating cylinder, through the arrangement of the fixing cylinder, the rotating cylinder, the fixing body and the positioning holes, the grinding angle of the cutter can be adjusted, and the grinding effect of the cutter can be flexibly adjusted according to requirements; and the required angle can be quickly positioned and adjusted, auxiliary tools are not needed for angle measurement and adjustment, the angle adjustment efficiency is improved, the angle consistency during grinding can be guaranteed in multiple times of grinding and multi-tool grinding, and the grinding precision is improved.
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Description

Technical Field

[0001] This utility model relates to the field of knife sharpener technology, and in particular to a knife sharpener with rapidly adjustable angle. Background Technology

[0002] When sharpening woodworking chisels and similar tools, commonly used sharpeners are generally fixed-angle, which cannot meet the needs of angle adjustment during sharpening. Currently available sharpeners with adjustable angles generally adjust by rotating the tool or whetstone clamp. The adjustment process requires the use of auxiliary tools such as protractors, or precise control of the rotation angle. All of these angle adjustment methods suffer from low adjustment efficiency and low precision, and poor angle consistency during repeated sharpening. In order to address the above defects, this application is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a sharpening tool with a quick-adjustable angle, addressing the problem that traditional woodworking chisel sharpening tools have difficulty in quickly and accurately adjusting the angle, and require additional tools for cumbersome angle adjustment.

[0004] To address the aforementioned problems, this utility model provides a sharpening tool with rapid angle adjustment, comprising a grinding disc assembly and an angle adjustment assembly. The angle adjustment assembly includes a fixed cylinder, a rotating cylinder, a fixing body, and a clamping mechanism. Both the fixed cylinder and the rotating cylinder are provided with several positioning holes. The rotating cylinder can rotate to adjust its relative position with the fixed cylinder. The fixing body can be a fixing pin, which can be inserted into the positioning holes on the fixed cylinder and the rotating cylinder to fix the angle of the rotating cylinder. The clamping mechanism is connected to the rotating cylinder and is used to clamp the tool to be sharpened.

[0005] According to one embodiment of the present invention, the fixed cylinder and the rotating cylinder are rotatably connected, such as by means of a rotating shaft. The angle adjustment component also includes a shaft, the fixed cylinder is mounted on the shaft, and the fixed cylinder can move along the shaft to adjust the height of the fixed cylinder, thereby adjusting the height of the tool to be ground.

[0006] According to one embodiment of the present invention, the fixing cylinder can rotate around the shaft to adjust the angle of the fixing cylinder. The fixing cylinder is equipped with a positioning bolt. After the position of the fixing cylinder is adjusted, the positioning bolt is tightened to make it abut against the shaft, thereby completing the fixing of the fixing cylinder.

[0007] Optionally, the angle-adjustable sharpener also includes a grinding disc support, which includes a motor and a worktable. The grinding disc assembly is a circular grinding disc, which is mounted on the worktable and connected to the motor. The angle adjustment component is also mounted on the worktable. This solution enables automatic sharpening.

[0008] Optionally, the grinding disc assembly is a long strip-shaped grinding stone, and the angle adjustment assembly is mounted on the guide rod assembly. Both the angle adjustment assembly and the guide rod assembly are provided in two sets, and this solution can realize manual grinding.

[0009] According to one embodiment of the present invention, the clamping mechanism includes two sets of clamping bodies, and the tool to be ground is clamped by adjusting the distance between the two sets of clamping bodies.

[0010] Furthermore, the clamping mechanism also includes a frame, which is provided in two sets. There is a gap between the two sets of frames for placing the tool to be sharpened. Both sets of clamping bodies are installed on one of the frames. The clamping bodies can move along the frame. Locking bolts are installed on the clamping bodies. After the two sets of clamping bodies clamp the tool, the locking bolts are tightened to fix the clamping bodies on the frame. The position of the tool can be adjusted by adjusting the position of the clamping bodies.

[0011] Furthermore, the frame is equipped with a tightening bolt, which tightens upwards, and works with the clamping body to clamp and fix the tool at multiple angles.

[0012] Optionally, the fixed cylinder is fitted outside the rotating cylinder, and the rotating cylinder rotates inside the fixed cylinder.

[0013] According to one embodiment of the present invention, the positioning holes are arranged along the circumference of the fixed cylinder and the rotating cylinder, and adjacent positioning holes on the same circumference are distributed at different radial positions.

[0014] The beneficial effects of this utility model are that, through the setting of the fixed cylinder, rotating cylinder, fixed body and positioning hole, the grinding angle of the tool can be adjusted, so that the grinding effect of the tool can be flexibly adjusted according to the needs, and the required angle can be quickly positioned and adjusted without the need to use auxiliary tools for angle measurement and adjustment, thereby improving the angle adjustment efficiency. In multiple grinding and grinding of multiple tools, the angle consistency during grinding can be guaranteed, thereby improving the grinding accuracy. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the sharpening tool with rapid angle adjustment in Example 1;

[0017] Figure 2 This is a schematic diagram of the angle adjustment component.

[0018] Figure 3 An exploded view of the angle adjustment component;

[0019] Figure 4 This is a schematic diagram of the overall structure of the sharpening tool with rapid angle adjustment in Example 2. Detailed Implementation

[0020] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0021] Example 1:

[0022] A sharpening tool with rapidly adjustable angle, such as Figure 1 It includes a grinding disc assembly 4 and an angle adjustment assembly 2, as well as a grinding disc support 1.

[0023] like Figure 1 The grinding disc support 1 includes a base 13, a motor 11 and a worktable 12. The grinding disc assembly 4 is a circular grinding disc. The grinding disc assembly 4 is installed on the worktable 12 and connected to the motor 11. The angle adjustment assembly 2 is installed on the worktable 12. This solution can realize automatic grinding.

[0024] like Figure 2 , Figure 3 The angle adjustment assembly 2 includes a fixed cylinder 22, a rotating cylinder 27, a fixed body 24, and a clamping mechanism 25. The fixed cylinder 22 is fitted outside the rotating cylinder 27, and the rotating cylinder 27 rotates inside the fixed cylinder 22. Both the fixed cylinder 22 and the rotating cylinder 27 are provided with several positioning holes 28. The rotating cylinder 27 is rotated to adjust its relative position with the fixed cylinder 22 so that the positioning holes 28 are aligned. The fixed body 24 uses a fixing pin, which is inserted into the positioning holes 28 on the fixed cylinder 22 and the rotating cylinder 27 to fix the angle of the rotating cylinder 27. The clamping mechanism 25 is connected to the rotating cylinder 27 and is used to clamp the tool 3 to be ground.

[0025] The angle adjustment assembly 2 also includes a shaft 21, and a fixed cylinder 22 is mounted on the shaft 21. The fixed cylinder 22 can move along the shaft 21 to adjust its height, thereby adjusting the height of the tool to be ground. The fixed cylinder 22 can rotate around the shaft 21 to adjust its angle. A positioning bolt 26 is installed on the fixed cylinder 22. After the position of the fixed cylinder 22 is adjusted, the positioning bolt 26 is tightened to make it abut against the shaft 21, thus fixing the fixed cylinder 22.

[0026] The clamping mechanism 25 also includes a frame 253, which is provided in two sets. There is a gap between the two sets of frames 253 for placing and adjusting the position of the tool 3 to be sharpened. Both sets of clamping bodies 251 are installed on the top frame 253. The clamping bodies 251 can move along the frame 253. The tool to be sharpened is clamped by adjusting the gap between the two sets of clamping bodies 251. Locking bolts 252 are installed on the clamping bodies 251. After the two sets of clamping bodies 251 clamp the tool, the locking bolts 252 are tightened to fix the clamping bodies 251 on the frame 253. The position of the tool can be adjusted by adjusting the position of the clamping bodies 251.

[0027] The bottom frame 253 is equipped with a top bolt 254, which is tightened upwards. Together with the clamping body 251, it can clamp and fix the tool at multiple angles, ensuring the stability of the tool during grinding.

[0028] By setting up the fixed cylinder 22, rotating cylinder 27, fixed body 24 and positioning hole 28, the grinding angle of the tool can be adjusted, so that the grinding effect of the tool can be flexibly adjusted according to the needs. It can also quickly position and adjust to the required angle without the need for auxiliary tools to measure and adjust the angle, thus improving the angle adjustment efficiency. In multiple grinding and grinding with multiple tools, the angle consistency during grinding can be guaranteed, thus improving the grinding accuracy.

[0029] Preferably, the positioning holes 28 are provided along the circumference of the fixed cylinder 22 and the rotating cylinder 27, and adjacent positioning holes 28 on the same circumference are distributed at different radial positions to achieve a transition connection effect between adjacent angles.

[0030] Example 2:

[0031] Unlike in Example 1, as Figure 4 In this solution, the grinding disc support 1 is not set. The grinding disc assembly 4 is a long strip grinding stone. The bottom of the shaft 21 in the angle adjustment assembly 2 is equipped with a slider. The slider is installed on the guide rod assembly 5. Both the angle adjustment assembly 2 and the guide rod assembly 5 are set in two sets. This solution can realize manual grinding.

[0032] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A quick angle-adjustable sharpener, characterized in that: The angle adjusting assembly (2) comprises a fixed cylinder (22), a rotating cylinder (27), a fixed body (24) and a clamping mechanism (25), the fixed cylinder (22) and the rotating cylinder (27) are provided with a plurality of positioning holes (28), the rotating cylinder (27) can rotate to adjust the relative position with the fixed cylinder (22), the fixed body (24) can be inserted into the positioning holes (28) on the fixed cylinder (22) and the rotating cylinder (27) to fix the angle of the rotating cylinder (27), and the clamping mechanism (25) is connected with the rotating cylinder (27) and used for clamping the tool to be polished.

2. The angular quick-adjustable sharpener of claim 1, wherein: The fixed cylinder (22) is connected with the rotating cylinder (27), the angle adjusting assembly (2) further comprises a shaft body (21), the fixed cylinder (22) is installed on the shaft body (21) and can move along the shaft body (21).

3. The angular quick-adjustable sharpener of claim 2, wherein: The fixed cylinder (22) can rotate around the shaft body (21), and the fixed cylinder (22) is provided with a positioning bolt (26).

4. The quick angle-adjustable sharpener of any one of claims 1-3, wherein: The clamping mechanism (25) comprises two groups of clamping bodies (251), and the tool to be polished is clamped by adjusting the spacing between the two groups of clamping bodies (251).

5. The angular quick-adjustable sharpener of claim 4, wherein: The clamping mechanism (25) further comprises two groups of frame bodies (253), the two groups of frame bodies (253) have a gap for placing the tool to be polished, the two groups of clamping bodies (251) are installed on one of the frame bodies (253), the clamping bodies (251) can move along the frame bodies (253), and the clamping bodies (251) are provided with locking bolts (252).

6. The angular quick-adjustable sharpener of claim 5, wherein: The frame bodies (253) are provided with jacking bolts (254).

7. The quick angle-adjustable sharpener of any one of claims 1-3, wherein: The fixed cylinder (22) is sleeved outside the rotating cylinder (27), and the rotating cylinder (27) rotates in the fixed cylinder (22).

8. The angular quick-adjustable sharpener of claim 7, wherein: The positioning holes (28) are arranged along the circumferences of the fixed cylinder (22) and the rotating cylinder (27), and adjacent positioning holes (28) on the same circumference are arranged at different radial positions.

9. The quick angle-adjustable sharpener of any one of claims 1-3, wherein: The angle quick-adjusting knife sharpener further comprises a grinding disc support body (1), the grinding disc support body (1) comprises a motor (11) and a workbench (12), the grinding disc assembly (4) is a circular grinding disc, the grinding disc assembly (4) is installed on the workbench (12) and connected with the motor (11), and the angle adjusting assembly (2) is installed on the workbench (12).

10. The quick angle-adjustable sharpener of any of claims 1-3, wherein: The grinding disc assembly (4) is a long strip-shaped grinding stone, and the angle adjusting assembly (2) is installed on a guide rod assembly (5).