Fixed-angle knife sharpener and knife sharpening method

Abstract

A fixed-angle knife sharpener and a knife sharpening method. The fixed-angle knife sharpener comprises a support body (4), an angle adjusting mechanism (6) and a grinding mechanism (2). The angle adjusting mechanism (6) comprises an angle block (66), an angle wheel (67) and an angle fixing assembly, wherein the angle block (66) is mounted on the support body (4) and can rotate and move up and down, and the angle wheel (67) is connected to the angle block (66) and can rotate; after being rotated to adjust the angle, the angle wheel (67) is fixed by means of the angle fixing assembly. The grinding mechanism (2) comprises a grinding rod assembly (21), which is connected to the angle wheel (67).

Description

Angle sharpener and sharpening method Technical Field

[0001] This invention relates to the field of knife sharpening technology, and in particular to a fixed-angle knife sharpener and a knife sharpening method. Background Technology

[0002] Currently, most manual angle-fixed-angle sharpeners on the market adjust the angle between the whetstone and the blade by adjusting the height of the sharpening rod assembly. However, due to the inconsistent shape, width, and length of the blade, the existing structure causes slight changes in the angle between the whetstone and the blade when the sharpening rod assembly moves the whetstone left or right after the angle is adjusted, as shown in Figure 6. When the angle is set at position A, the end of the sharpening rod assembly will rise after moving to position B, resulting in a smaller angle between the sharpening rod assembly and the blade. This leads to a curved shape on the blade after sharpening, resulting in inconsistent sharpening. To address these shortcomings, this application is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a fixed-angle sharpener and sharpening method, which solves the problem that in current fixed-angle sharpeners, the angle between the sharpening rod assembly and the blade changes during the sharpening process due to the adjustment of the height of the sharpening rod assembly to adjust the angle between the sharpening stone and the blade. This results in a curved blade after sharpening, making it difficult to maintain consistency.

[0004] To address the aforementioned problems, this invention provides a fixed-angle sharpener, comprising a support body, an angle adjustment mechanism, and a sharpening mechanism. The angle adjustment mechanism includes an angle block, an angle wheel, and an angle fixing component. The angle block is mounted on the support body and is capable of rotation and vertical movement. The angle wheel is connected to the angle block and is capable of rotation. After the angle is adjusted by rotation, the angle wheel is fixed by the angle fixing component. The sharpening mechanism includes a sharpening rod assembly connected to the angle wheel. During sharpening, the angle wheel is rotated to adjust the angle of the sharpening rod assembly. After adjustment, the angle is fixed. During the sharpening process, the vertical movement of the angle block on the support body ensures a consistent sharpening angle.

[0005] Furthermore, the angle fixing component includes an angle hole cover plate and an angle pin. The angle hole cover plate is provided with a plurality of angle holes, and the angle wheel is provided with a plurality of positioning holes. The angle pin is inserted into the angle holes and positioning holes to fix the angle of the angle wheel.

[0006] Furthermore, the angle fixing assembly also includes an angle locking member, which can press against the angle wheel. After the angle wheel is adjusted, the angle locking member is used to press against the angle wheel to achieve fixation.

[0007] Furthermore, the angle locking component is a locking screw, and at least two sets of locking screws are provided, with the locking screws installed on the angle block.

[0008] Furthermore, the grinding rod assembly is capable of moving along the axial direction of the grinding rod assembly on the angle wheel.

[0009] Furthermore, the support body is an axis, and the angle block can move up and down along the axis and rotate around the axis.

[0010] Furthermore, the fixed-angle grinder also includes a height adjustment support assembly for supporting the angle block so that the lowest point of the angle block is maintained at this height position.

[0011] Furthermore, the height-adjustable support assembly includes a screw hole seat and a threaded rotating block, and the support height is adjusted by rotating the threaded rotating block.

[0012] Furthermore, the fixed-angle grinder also includes a tool holder for holding the tool to be ground.

[0013] A knife sharpening method, based on the aforementioned fixed-angle knife sharpener, includes the following steps:

[0014] Clamp and fix the tool to be sharpened on the tool holder, and select the mode according to the sharpening requirements:

[0015] Mode 1: Rotate the angle adjustment wheel to match the tilt angle of the grinding rod assembly with the grinding angle of the blade. Use the angle fixing assembly to fix the angle wheel, and operate the grinding rod assembly to grind the blade. During the grinding process, the angle block moves up and down on the support to ensure a consistent grinding angle.

[0016] Mode 2: Adjust the height of the support component to adjust the grinding rod assembly. The angle wheel is not fixed in angle. The grinding rod assembly is operated to grind the tool.

[0017] Mode 3: Adjust the height of the support component to adjust the angle of the grinding rod component. After the angle is adjusted, lock the angle wheel to fix the angle. Operate the grinding rod component to grind the tool. During the grinding process, the angle block moves up and down on the support body to ensure a consistent grinding angle.

[0018] The beneficial effect of this invention is that when using the sharpening device of this solution to sharpen knives, by adjusting and fixing the angle of the sharpening rod assembly, while allowing the angle block to slide freely up and down during the sharpening process, a consistent sharpening angle can be achieved through the overall up and down movement, regardless of the width, length, or curve of the knife. This avoids the problem of slight changes in the angle between the sharpening stone and the blade when the sharpening rod assembly moves the sharpening stone to the left or right, which would otherwise result in a curved blade and poor consistency after sharpening. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 is a schematic diagram of the overall structure of the fixed-angle grinder;

[0021] Figure 2 is a schematic diagram of one side of the angle adjustment mechanism of the fixed-angle grinder;

[0022] Figure 3 is a schematic diagram of the top view of the fixed-angle grinder;

[0023] Figure 4 is a schematic diagram of the exploded structure of the tool holder;

[0024] Figure 5 is an enlarged schematic diagram of the angle adjustment mechanism;

[0025] Figure 6 is a schematic diagram of a traditional fixed-angle grinder during grinding. Detailed Implementation

[0026] The following description is only intended to disclose the invention so that those skilled in the art can practice it. The embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the 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 invention.

[0027]

Example 1

[0028] The fixed-angle sharpener, as shown in Figure 1, includes a base 1, a tool holder 3, a support body 4, an angle adjustment mechanism 6, and a sharpening mechanism 2.

[0029] The support body 4 can be made of frame, shaft or other means. In this embodiment, a shaft is used. The shaft is connected to the base 1. The angle adjustment mechanism 6 includes an angle block 66, an angle wheel 67 and an angle fixing component. The angle block 66 is installed on the support body 4. The two are connected by a linear bearing. The angle block 66 can rotate and move up and down. The angle wheel 67 is connected to the rotating shaft 68 on the angle block 66. The angle wheel 67 can rotate. After the angle is adjusted by rotation, the angle wheel 67 is fixed by the angle fixing component.

[0030] The polishing mechanism 2 includes a polishing rod assembly 21 and a polishing stone 22. The polishing rod assembly 21 is a rod structure with a polishing stone frame 23 installed. The polishing stone frame 23 is used to install the polishing stone 22. Two polishing stones 22 can be installed. A spring 24 is installed on the polishing rod assembly 21 to clamp the polishing stone 22 with the polishing stone frame 23.

[0031] The grinding rod assembly 21 passes through the hole on the angle wheel 67 and cooperates with the angle wheel 67 through a linear bearing. When grinding, the angle wheel 67 is rotated to adjust the angle of the grinding rod assembly 21. After adjustment, the angle is fixed. During the grinding process, the angle block 66 moves up and down on the support body 4 to ensure a consistent grinding angle.

[0032] The tool holder 3 is mounted on the base 1 and is used to hold the tool to be sharpened, as shown in Figure 4. The tool holder 3 includes at least two tool clips 32, a mounting bracket 31, and a fixing base 34. Specifically, the fixing base 34 is provided with a socket portion 341 for mounting the mounting bracket 31. The socket portion 341 is a polyhedral structure. In this embodiment, the polyhedral structure is an octagonal prism. The mounting bracket 31 is provided with mounting holes 311 that match the contour of the polyhedral structure. By switching the mounting contact surfaces of the mounting holes 311 and the socket portion 341, the angle of the mounting bracket 31 can be adjusted. The fixing component is used to fix the mounting bracket 31 on the socket portion 341. When the tool is flipped, the fixing component is released, the mounting bracket 31 is flipped over, and then reinstalled on the socket portion 341.

[0033] The tool holder 32 is movably mounted on the mounting bracket 31, and the distance between the tool holders 32 can be adjusted according to the length of the tool. Specifically, the mounting bracket 31 is provided with an adjustment groove 312, and the adjustment screw 313 passes through the adjustment groove 312 and connects to the tool holder 32. The position of the tool holder 32 can be adjusted by loosening and adjusting the position of the adjustment screw 313 in the adjustment groove 312. The mounting bracket 31 can be adjusted at the installation angle to adapt to tools of different shapes and sizes or different grinding needs. The fixing component uses a fixing bolt 33, and the fixing seat 34 is provided with a bolt hole 342 that mates with the fixing bolt 33. The head diameter of the fixing bolt 33 is larger than the diameter of the mounting hole 311, which is used to press the mounting bracket 31 together after tightening. The mounting bracket 31 and the fixing seat 34 are fastened together by the fixing bolt 33. When it is necessary to flip the tool, the fixing bolt 33 is unscrewed, the mounting bracket 31 is flipped and then fixed.

[0034] In this embodiment, as shown in Figures 1-3, the angle fixing component includes an angle hole cover plate 61 and an angle pin 62. The angle hole cover plate 61 is provided with a plurality of angle holes 64. Specifically, the angle hole cover plate 61 is mounted on the angle block 66 by two fixing pins. The angle hole cover plate 61 is a circular plate with six angle holes 64 distributed on it, namely 15, 16, 17, 20, 25, and 30 degrees, which are six angles. In other embodiments, other angles can also be set. Correspondingly, the angle wheel 67 is provided with six positioning holes 69. The angle pin 62 is inserted into the angle holes 64 and the positioning holes 69 to fix the angle of the angle wheel 67.

[0035] After rotating the angle wheel, the angle pin 62 is inserted through the angle hole 64 on the cover plate, which makes it convenient for users to quickly adjust the angle and fix the angle. The support body 4 and the angle block are connected by a linear bearing, which allows the angle block to slide freely up and down on the support shaft. In this way, regardless of the width, length and curve of the blade, a consistent grinding angle can be achieved by the overall up and down movement.

[0036] In addition, to facilitate users to adjust more angles, the angle fixing component also includes an angle locking member 65. The angle locking member 65 can press against the angle wheel 67. After the angle wheel 67 is adjusted, it is fixed by using the angle locking member 65 to press against the angle wheel 67. Specifically, the angle locking member 65 is a locking screw. At least two sets of locking screws are provided, one above and one below the angle wheel 67. The locking screws are installed on the angle block 66.

[0037] When the user has a special angle requirement, such as 17.5 degrees or 13 degrees, the angle pin 62 is released, and the angle wheel 67 can rotate freely. After the special angle is adjusted, the angle is fixed by the two locking screws on the top and bottom of the angle wheel.

[0038] The angle can be finely adjusted to meet the user's needs by using two threaded rotating blocks on the support spindle.

[0039] Example 2: Based on Example 1, this example adds a height adjustment support component 5. The height adjustment support component 5 is used to support the angle block 66 so that the lowest point of the angle block 66 is kept at this height position. Specifically, the height adjustment support component 5 can adjust the height on the support body 4, thereby adjusting the lowest position of the angle block 66.

[0040] The height-adjustable support component 5 can adopt any structure that can achieve lifting and lowering, and the support body can also be set as a telescopic structure. In this embodiment, the height-adjustable support component 5 includes a screw hole seat 52 and a threaded rotating block 51. The support height is adjusted by rotating the threaded rotating block 51.

[0041] Preferably, as shown in Figure 1, fixing screws 53 are provided on both the screw hole seat 52 and the threaded rotating block 51. The fixing screws on the threaded rotating block 51 are used to tighten and fix the screw hole seat 52 against the support body or the screw hole seat 52 after the height is adjusted by rotation. The fixing screws on the screw hole seat 52 are used to fix the screw hole seat 52 to the support body after tightening, and the position of the screw hole seat 52 on the support body can be adjusted after loosening.

[0042] In other embodiments, a fastening device, such as a fastening bolt, may also be provided on the angle block 66 to fix it at a fixed height.

[0043] A knife sharpening method, based on the fixed-angle knife sharpener in any of the above embodiments, includes the following steps:

[0044] Hold and fix the tool to be sharpened on the tool holder 3, and select the mode according to the sharpening requirements:

[0045] Mode 1: Rotate the angle adjustment wheel 67 to match the tilt angle of the grinding rod assembly 21 with the grinding angle of the blade. Use the angle fixing component to fix the angle wheel 67. Operate the grinding rod assembly 21 to grind the blade. During the grinding process, the angle block 66 moves up and down on the support body 4 to ensure a consistent grinding angle. In this mode, only the angle of the grinding rod assembly is fixed, and the height does not need to be fixed. Under the support of the contact between the grinding stone and the blade, the angle block 66 will not slip. The angle block 66 can move up and down freely, avoiding the problem of slight changes in the angle between the grinding stone and the blade when the grinding rod assembly moves the grinding stone to the left or right, which would cause the blade to have a curve and poor consistency after grinding.

[0046] Mode 2: Adjust the height of the support component 5 to adjust the grinding rod component 21. The angle wheel 67 is not fixed at the angle. The grinding rod component 21 is operated to grind the tool. In this mode, after the grinding rod component reaches the required angle by adjusting the height of the angle block 66, the angle wheel is not locked. The height is operated by the angle block always resting on the threaded rotating block 51. The grinding operation in this mode is more flexible, but the consistency is lower than that in Mode 1.

[0047] Mode 3: Adjust the height of the support component 5 to adjust the angle of the grinding rod component 21. After the angle is adjusted, lock the angle wheel 67 to fix the angle. Operate the grinding rod component 21 to grind the tool. During the grinding process, the angle block 66 moves up and down on the support body 4 to ensure a consistent grinding angle. This mode provides another angle adjustment method compared to Mode 1.

[0048] 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 objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations and modifications can be made to the implementation of the present invention without departing from the stated principles.

Claims

1. An angle grinder characterized in that: The fixed-angle knife sharpener comprises a support body (4), an angle adjusting mechanism (6) and a polishing mechanism (2). The angle adjusting mechanism (6) comprises an angle block (66), an angle wheel (67) and an angle fixing assembly. The angle block (66) is installed on the support body (4) and can rotate and move up and down. The angle wheel (67) is connected to the angle block (66) and can rotate. After the angle of the angle wheel (67) is adjusted, the angle wheel (67) is fixed by the angle fixing assembly. The polishing mechanism (2) comprises a grinding rod assembly (21) connected to the angle wheel (67). When polishing, the angle of the grinding rod assembly (21) is adjusted by rotating the angle wheel (67), and the angle is fixed after the adjustment. During the polishing process, the consistent grinding angle is ensured by moving the angle block (66) up and down on the support body (4).

2. The angular sharpening device of claim 1, wherein: The angle fixing assembly comprises an angle hole cover plate (61) and an angle bolt (62). The angle hole cover plate (61) is provided with a plurality of angle holes (64). The angle wheel (67) is provided with a plurality of positioning holes (69). The angle bolt (62) is inserted into the angle hole (64) and the positioning hole (69) to fix the angle of the angle wheel (67).

3. An angle-setting sharpener according to claim 1 or 2, characterized in that: The angle fixing assembly further comprises an angle locking piece (65) which can press against the angle wheel (67). After the angle of the angle wheel (67) is adjusted, the angle wheel (67) is fixed by using the angle locking piece (65).

4. The angular sharpening device of claim 3, wherein: The angle locking piece (65) is a locking screw. At least two groups of locking screws are provided. The locking screws are installed on the angle block (66).

5. The angular sharpening device of claim 3, wherein: The grinding rod assembly (21) can move along the axial direction of the grinding rod assembly (21) on the angle wheel (67).

6. An angle-setting sharpener according to claim 4 or 5, characterized in that: The support body (4) is a shaft body. The angle block (66) can move up and down along the shaft body and rotate around the shaft body.

7. The angular sharpening device of claim 5, wherein: The fixed-angle knife sharpener further comprises a height adjusting support assembly (5) for supporting the angle block (66) and keeping the lowest point of the angle block (66) at a certain height position.

8. The angular sharpening device of claim 7, wherein: The height adjusting support assembly (5) comprises a threaded hole seat (52) and a threaded rotating block (51). The support height is adjusted by rotating the threaded rotating block (51).

9. The angular sharpening device of claim 1, wherein: The fixed-angle knife sharpener further comprises a knife seat (3) for clamping the knife to be polished.

10. A method of sharpening a blade based on the angle-setting sharpener according to any one of claims 1-9, characterized in that: The method comprises the following steps: The knife to be polished is clamped and fixed on the knife seat (3). The mode is selected according to the polishing requirement. Mode one: the angle of the angle wheel (67) is adjusted by rotating. The inclination angle of the grinding rod assembly (21) is matched with the polishing angle of the blade. The angle wheel (67) is fixed by the angle fixing assembly. The knife is polished by operating the grinding rod assembly (21). During the polishing process, the consistent grinding angle is ensured by moving the angle block (66) up and down on the support body (4). Mode two: the support height of the height adjusting support assembly (5) is adjusted to adjust the grinding rod assembly (21). The angle wheel (67) is not fixed in angle. The knife is polished by operating the grinding rod assembly (21). Mode three: adjust the support height of the height adjustment support assembly (5), realize the angle adjustment of the grinding rod assembly (21), lock the angle wheel (67) after the angle adjustment, operate the grinding rod assembly (21) to grind the tool, and ensure consistent grinding angle through the up and down movement of the angle block (66) on the support body (4) during the grinding process.

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