Tool sharpener

Abstract

The utility model discloses a tool sharpener, and belongs to the technical field of sharpening tools capable of correcting the clamping angle of a tool, when the tool needs to be sharpened, the tool only needs to be preliminarily clamped through a clamping assembly, a tool setting cross rod is lifted up, the tool setting cross rod is made to be close to the cutting edge of the tool, and then the tool setting cross rod is lifted up to be close to the cutting edge of the tool; the tool setting cross rod serves as a reference object to adjust the clamping angle of the tool, it is guaranteed that the cutting edge of the whole cutting edge is parallel to the translation direction of the grinding assembly as much as possible, then the clamping assembly is used for fixedly clamping the tool, the grinding assembly is horizontally moved in a reciprocating mode, and therefore the technical effect that the cutting edge is evenly ground is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of grinding equipment for knives with blades on the same plane, and in particular to a grinding fixture that can correct the clamping angle of the knife. Background Technology

[0002] Knives are commonly used tools in people's daily lives and production. Knives can use their blades to meet people's needs for cutting and slicing, so the quality of the blade is an important factor in the functionality of knives.

[0003] Before manufacturing or use, blades require sharpening to ensure their sharpness. Traditional sharpening involves the operator holding the blade at an angle against a whetstone, sliding the blade back and forth across the whetstone's surface to achieve the desired effect. However, maintaining the contact angle between the blade and the whetstone during reciprocating sliding undoubtedly places certain technical demands on the sharpening operator. If the entire grinding surface of the blade cannot be kept on the same plane during grinding, it can cause excessive wear on the blade, or even damage it. Therefore, sharpening operators need to have a high level of technical proficiency. However, excessive reliance on the operator's skills is clearly not suitable for modern industrial production. To address this, some related technologies employ a sharpening solution where the blade is fixed and the whetstone moves back and forth. This allows the grinding angle to be fixed, avoiding reliance on the operator's skills. However, the inventor believes that if the blade position and angle are not properly fixed, there will be a significant deviation between the blade's edge line and the grinding direction of the whetstone, which may cause the blade's center of gravity to shift, seriously affecting the feel and functionality of the tool. Utility Model Content

[0004] In order to overcome the defects in the technical solution of grinding with a fixed tool reciprocating and translating whetstone, such as poor tool positioning, large deviation between the cutting edge line and the grinding direction of the whetstone, the center of gravity of the cutting edge may shift, which seriously affects the feel and functionality of the tool.

[0005] In view of at least one of the above-mentioned technical problems, this utility model provides a sharpening machine with a tool-setting crossbar. By setting the tool-setting crossbar and the cutting edge, a reference object can be provided before sharpening to adjust the angle and position of the tool clamping, ensuring that the entire cutting edge is parallel to the translational direction of the grinding wheel as much as possible, thereby achieving a uniform grinding effect. The specific technical solution is as follows:

[0006] A knife sharpening machine includes a frame, one side of which is provided with a clamping assembly for fixing a knife; the frame is provided with a matching slider and a linear guide rail, the slider being connected to a grinding assembly; the frame is provided with a hinge shaft I, the axis of which is parallel to the track line of the linear guide rail, the hinge shaft I is coupled with a connecting rod assembly, the connecting rod assembly including a tool-setting crossbar, the axis of which is parallel to the track line of the linear guide rail.

[0007] In some embodiments of this disclosure, the clamping assembly includes a telescopic sleeve; one end of the telescopic sleeve is connected to the outer side of the frame, and the other end is provided with a hinge shaft II parallel to the track line of the linear guide rail, and the telescopic sleeve is connected to a blade back clamping member through the hinge shaft II.

[0008] In some embodiments of this disclosure, the blade back clamping component includes a horizontal support plate, a connecting crank arm is provided on one side of the horizontal support plate, the connecting crank arm is provided with a threaded through hole perpendicular to the horizontal support plate, a threaded rod is provided in the threaded through hole, a pressure plate is connected to the lower end of the threaded rod, and the lower end of the threaded rod is rotatably connected to the pressure plate.

[0009] In some embodiments of this disclosure, the connecting rod assembly further includes an adjusting rod, with rod clamp head I and rod clamp head II respectively provided at both ends. Rod clamp head I is used in conjunction with the hinge shaft I, and rod clamp head II is used in conjunction with the tool-setting crossbar.

[0010] In some embodiments of this disclosure, the grinding assembly includes a housing, within which an angle grinder is disposed, and the angle grinder is provided with grinding discs.

[0011] In some embodiments of this disclosure, the rear of the housing is provided with an elastic connector, the axial direction of which is perpendicular to the linear guide rail; the frame is also provided with a guide rail, the track line of which is a straight line or a curve.

[0012] In some embodiments of this disclosure, the frame is provided with a slot, and the slot is detachably connected to a blade contour plate, the side of which is the guide rail.

[0013] In some embodiments of this disclosure, the front of the housing is provided with a threaded lifting sleeve, the threaded lifting sleeve including an inner threaded sleeve and an outer threaded core, the upper part of the inner threaded sleeve being vertically connected to the bottom surface of the housing, and the lower part of the outer threaded core being provided with a groove for use with the guide rail.

[0014] In some embodiments of this disclosure, the threaded lifting sleeve is provided with a screwing rod on its side, and the outer side of the external threaded tube core is provided with a rotating part, and the screwing rod and the rotating part are circumferentially rotated together.

[0015] In some embodiments of this disclosure, the angle grinder is equipped with a grinding disc press, which includes a threaded lifting rod assembly and a rolling bearing; the threaded lifting rod assembly includes a matching threaded sleeve and a screw, the threaded sleeve is connected to the outer surface of the angle grinder, and the lower end of the screw is connected to the inner ring of the rolling bearing. In use, the outer ring of the rolling bearing contacts the outer surface of the grinding disc.

[0016] Compared with existing technologies, the above-mentioned sharpening machine has the following advantages:

[0017] When it is necessary to sharpen the cutting tool, simply first clamp the tool with the clamping assembly, lift the tool setting bar so that the tool setting bar is close to the cutting edge of the tool, adjust the clamping angle of the tool with the tool setting bar as a reference, and try to ensure that the cutting edge of the entire cutting edge is parallel to the translation direction of the grinding assembly. Then use the clamping assembly to fix the tool, and reciprocate the translation of the grinding assembly to achieve the technical effect of uniform grinding of the cutting edge.

[0018] This design has a simple structure, low failure rate, is easy to operate, has a low learning curve, does not rely on skilled workers, and is low in cost. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram from one perspective of Embodiment 3 of the present utility model.

[0020] Figure 2 This is a three-dimensional schematic diagram from the second perspective of Embodiment 3 of the present utility model.

[0021] Figure 3 This is a top view schematic diagram of Embodiment 3 of the present utility model structure;

[0022] Figure 4 for Figure 3 Schematic diagram of the cross section of AA;

[0023] Figure 5 for Figure 3 Cross-sectional view of BB;

[0024] The following are the labels in the diagram: 1. Frame; 11. Slider; 12. Linear guide rail; 121. Guide rail; 13. Hinge shaft I; 2. Clamping assembly; 21. Telescopic sleeve; 22. Tool back clamping component; 221. Horizontal support plate; 222. Connecting crank arm; 223. Threaded rod; 224. Pressure plate; 3. Grinding assembly; 31. Housing; 32. Angle grinder; 321. Grinding disc; 322. Grinding disc clamp; 3221. Rolling bearing; 33. Threaded lifting sleeve; 34. Tightening rod; 4. Connecting rod assembly; 41. Tool setting crossbar; 42. Adjusting rod. Detailed Implementation

[0025] To better understand the purpose, structure, and function of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0026] Please refer to the attached diagram. Figures 1 to 5 A knife sharpening machine is designed, including a frame 1. The terms "comprising" and "equipped with," and any variations thereof, are open-ended and intended to cover non-exclusive inclusion. The frame 1 may be a metal frame, allowing the fixture to be a movable unit, facilitating operator movement to the desired location. A clamping assembly 2 for securing the tool is provided on one side of the frame 1. The frame 1 is equipped with a matching slider 11 and a linear guide rail 12. The slider 11 can slide linearly along the linear guide rail 12. A grinding assembly 3 for sharpening the cutting edge of the tool is connected to the slider 11. In use, the grinding assembly 3 can move along the linear guide rail... 12. Reciprocating translation; The frame 1 is provided with a hinge shaft I13. In this document, the component number is used only to distinguish the objects described and has no sequential or technical meaning. The axis of the hinge shaft I13 is parallel to the track line of the linear guide rail 12. The hinge shaft I13 is connected to a connecting rod group 4. The connecting rod group 4 includes a tool-setting crossbar 41. The axis of the tool-setting crossbar 41 is parallel to the track line of the linear guide rail 12. In use, the tool-setting crossbar 41 can hinge and swing about the hinge shaft I13 as the axis. That is, whether the tool-setting crossbar 41 is raised or lowered, the tool-setting crossbar 41 always remains parallel to the linear guide rail 12.

[0027] When sharpening a cutting tool, it is only necessary to first clamp the tool using the clamping assembly 2, so that the tool retains a small degree of freedom on the clamping assembly 2. Then, lift the tool setting bar 41 so that it is close to the cutting edge of the tool. Using the tool setting bar 41 as a reference, adjust the clamping angle of the tool to ensure that the entire cutting edge is parallel to the translation direction of the grinding assembly 3 as much as possible. Then, use the clamping assembly 2 to fix the tool, so that the tool is firmly clamped on the clamping assembly 2. The grinding assembly 3 is moved back and forth to achieve the technical effect of uniform grinding of the cutting edge. This design has a simple structure, low failure rate, is easy to operate, has low learning curve, does not depend on the skill level of the operator, and has low cost.

[0028] The above embodiments illustrate three examples of implementing the aforementioned technical solutions. The term "embodiment" as used herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various locations within the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Where there is no conflict, the various embodiments in this application can be combined with each other.

[0029] Embodiment 1 discloses a knife sharpening machine, including a frame 1, which can be a metal frame, allowing the fixture to be a movable whole, facilitating the operator to move it to the required position; one side of the frame 1 is provided with a clamping assembly 2 for fixing the knife; the frame 1 is provided with a matching slider 11 and a linear guide rail 12, the slider 11 can slide linearly along the linear guide rail 12, and the slider 11 is connected to a grinding assembly 3 for grinding the cutting edge of the knife, which, in use, can move along the linear guide rail 12. Reciprocating translation; the frame 1 is provided with a hinge shaft I13, the axis of which is parallel to the track line of the linear guide rail 12. The hinge shaft I13 is connected to a connecting rod group 4, which includes a tool-setting crossbar 41. The axis of the tool-setting crossbar 41 is parallel to the track line of the linear guide rail 12. In use, the tool-setting crossbar 41 can swing hingedly about the hinge shaft I13 as the axis. That is, whether the tool-setting crossbar 41 is raised or lowered, it always remains parallel to the linear guide rail 12.

[0030] The clamping component 2 is connected to the side of the frame 1, which makes the overall fixture more robust and facilitates the adjustment of the working position as needed in the workplace. The clamping component 2 clamps the tool laterally, so that the cutting edge of the tool is close to the grinding component 3. In this embodiment, the grinding component 3 includes a chuck, and a whetstone is adapted in the chuck. The grinding of the cutting edge is achieved by translating the whetstone.

[0031] Embodiment 2 discloses a knife grinding machine. The difference between this embodiment and Embodiment 1 is that the clamping assembly 2 includes a telescopic sleeve 21, which is equipped with a set screw to fix the telescopic length of the sleeve. In this embodiment, the cross-section of the telescopic sleeve 21 is elliptical or an asymmetrical special shape. This embodiment uses an elliptical shape to effectively prevent rotation from causing the grinding angle to shift. One end of the telescopic sleeve 21 is connected to the outer side of the frame 1, and the other end is provided with a track connected to the linear guide rail 12. A parallel hinge shaft II is used, and the telescopic sleeve 21 is connected to a blade back clamping member 22 via the hinge shaft II. The hinge shaft II allows for adjustment of the grinding angle of the blade as needed, making it more versatile. The telescopic sleeve 21 allows adjustment of the distance between the clamping assembly 2 and the grinding assembly 3 to accommodate different blade back sizes. The blade back clamping member 22 includes a cross support plate 221. When fixing the blade, the bottom surface of the blade back abuts against the cross support plate 221. One side of the cross support plate 221 is provided with a connecting... The connecting arm 222 has a threaded through hole perpendicular to the cross support plate 221. A threaded rod 223 is fitted inside the threaded through hole. A pressure plate 224 is connected to the lower end of the threaded rod 223. When fixing the tool, the threaded rod 223 is screwed on, and the pressure plate 224 moves downward, pressing the tool. The lower end of the threaded rod 223 is rotatably connected to the pressure plate 224, which can effectively prevent the angle of the tool from deflecting during pressing. In the description of this application, it should be understood that the directional terms "upper" and "lower" are used. The orientation or positional relationship indicated by "front", "back", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the usage state, and is only for the convenience of description, and is not intended to indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be crudely interpreted as a limitation of this application; the grinding assembly 3 includes a housing 31, an angle grinder 32 is disposed in the housing 31, the angle grinder 32 is disposed of with a grinding disc 321, and the grinding disc 321 is an angle grinding disc.

[0032] like Figures 1 to 5As shown, Embodiment 3 discloses a knife sharpening machine. The difference between this embodiment and Embodiment 2 is that the cross-section of the telescopic sleeve 21 is polygonal, which can be triangular or quadrilateral. This embodiment uses a quadrilateral. The polygonal sleeve can achieve circumferential limiting, which can effectively prevent rotation from causing the grinding angle to shift. The connecting rod assembly 4 also includes an adjusting rod 42. The adjusting rod 42 has a rod clamp head I and a rod clamp head II at its two ends. The rod clamp head I is used with the hinge shaft I13, and the rod clamp head II is used with the tool setting crossbar 41. Through the setting of the rod clamp head I and the rod clamp head II, the connecting rod assembly 4 can adjust the distance between the tool setting crossbar 41 and the clamping assembly 2 as needed, which is convenient for using knives with various different back sizes. The rear of the housing 31 is provided with an elastic connector, the axis of which is perpendicular to the linear guide rail 12. In this embodiment, the elastic connector can be a coil spring, which enables a flexible connection between the tail of the housing 31 and the slider 11. The frame 1 is also provided with a guide rail 121, the track line of which is a straight line or a curve. In this embodiment, the track line of the guide rail 121 is an arc curve, which is consistent with the finished curve of the cutting edge of the tool. The front of the housing 31 is provided with a threaded lifting sleeve 33, which includes an inner threaded sleeve and an outer threaded core. The upper part of the inner threaded sleeve is vertically connected to the bottom surface of the housing 31, and the outer threaded core... The lower part is provided with a groove that matches the guide rail 121. During use, when the grinding assembly 3 is moved horizontally, the guide rail 121 acts on the groove. With the cooperation of the elastic connector, the angle grinder 32 can achieve the technical effect of curved surface grinding. Further improvements can be made here: the frame 1 is provided with a slot, and a blade contour plate is detachably connected to the slot. The side of the blade contour plate serves as the guide rail 121. During use, the blade contour plate is first removed and pre-ground to match the shape of the cutting edge of the tool. When it matches the cutting edge curve, the blade contour plate is fitted into the slot, using the curved surface ground by the blade contour plate as the guide rail 121. The blade contour plate can be a plastic plate, metal plate, or wood plate. The design aims to create a rigid flat plate that can mimic shapes. The threaded lifting sleeve 33 is equipped with a screwing rod 34 on its side, and the outer side of the externally threaded core is provided with a rotating part. The screwing rod 34 and the rotating part rotate in circumferential linkage. In this embodiment, the grinding disc 321 is a louvered blade, and the angle grinder 32 is equipped with a grinding disc press 322. The grinding disc press 322 includes a threaded lifting rod assembly and a rolling bearing 3221. The threaded lifting rod assembly includes a matching threaded sleeve and a screw. The threaded sleeve is connected to the outer surface of the angle grinder 32, and the lower end of the screw is connected to the inner ring of the rolling bearing 3221. During use, the outer ring of the rolling bearing 3221 contacts the outer surface of the louvered blade, effectively ensuring the grinding force of the inner surface of the louvered blade on the cutting edge.The threaded lifting sleeve 33 is provided with a screwing rod 34 on its side, and the outer side of the externally threaded tube core is provided with a rotating part. The screwing rod 34 and the rotating part are circumferentially linked. In this embodiment, the screwing rod 34 and the rotating part are circumferentially linked by a belt. When the screwing rod 34 is rotated, the rotating part rotates synchronously, realizing the lifting and lowering of the internally threaded tube sleeve in the threaded lifting sleeve 33, that is, the front end of the grinding assembly 3 can be lifted and lowered as needed. Similarly, the rotating part can also be an external gear ring, and the screwing rod 34 can be provided with an external gear disc that matches it, realizing circumferential synchronous rotation through external gear meshing. In this embodiment, the upper end of the screwing rod 34 is provided with a handle. The handle not only makes the adjustment of the screwing rod 34 convenient, but also makes it easy to hold and move the grinding assembly 3, making operation convenient.

[0033] It is understood that the above description is only for illustrating specific implementation methods of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of disclosure of this application.

Claims

1. A knife-sharpening machine characterized in that, The utility model provides a kind of cutting tool grinding machine, including rack (1), one side of the rack (1) is equipped with the clamping component (2) for fixing tool;The rack (1) is equipped with matching sliding block (11) and linear guide rail (12), the sliding block (11) is connected with grinding assembly (3);The rack (1) is equipped with articulated shaft I (13), the axis of articulated shaft I (13) is parallel with the track line of linear guide rail (12), articulated shaft I (13) is connected with connecting rod group (4), and the connecting rod group (4) includes tool setting cross bar (41), and the axis of tool setting cross bar (41) is parallel with the track line of linear guide rail (12).

2. The knife-sharpening machine of claim 1, wherein The clamping component (2) includes telescopic sleeve rod (21);One end of the telescopic sleeve rod (21) is connected to the outer side of the rack (1), and the other end is provided with articulated shaft II parallel to the track line of the linear guide rail (12), and the telescopic sleeve rod (21) is connected with the back of the knife by the articulated shaft II Pressure solid component (22).

3. The knife-sharpening machine of claim 2, wherein, The back of the knife pressing solid component (22) includes a cross bracket (221), one side of the cross bracket (221) is provided with a connecting curved arm (222), the connecting curved arm (222) is provided with a threaded hole perpendicular to the cross bracket (221), a threaded rod (223) is arranged in the threaded hole, the lower end of the threaded rod (223) is connected with a pressing plate (224), and the lower end of the threaded rod (223) is rotatably connected with the pressing plate (224).

4. The knife-sharpening machine of claim 2, wherein, The connecting rod group (4) further includes a distance adjusting rod (42), and the two ends of the distance adjusting rod (42) are respectively provided with a rod clamp head I and a rod clamp head II.

5. The knife-sharpening machine of claim 1, wherein, The grinding assembly (3) includes a machine shell (31), and the machine shell (31) is provided with an angle grinder (32).

6. The knife-sharpening machine of claim 5, wherein, The rear part of the machine shell (31) is provided with an elastic connecting piece, the axial direction of the elastic connecting piece is perpendicular to the linear guide rail (12);The rack (1) is further provided with a guide rail (121), and the track line of the guide rail (121) is a straight line or a curve.

7. The knife-sharpening machine of claim 6, wherein, The rack (1) is provided with a slot, and the slot is detachably connected with a blade profiling plate, and the side surface of the blade profiling plate is the guide rail (121).

8. A knife-sharpening machine according to claim 6 or 7, characterised in that, The front part of the machine shell (31) is provided with a threaded lifting sleeve (33), and the threaded lifting sleeve (33) includes a matching internal threaded sleeve and an external threaded sleeve core.

9. The knife-sharpening machine of claim 8, wherein, The side surface of the threaded lifting sleeve (33) is provided with a screw rod (34), the outer side surface of the external threaded sleeve core is provided with a rotating part, and the screw rod (34) and the rotating part are circumferentially rotationally connected.

10. The knife-sharpening machine of claim 6, wherein, The angle grinder (32) is equipped with an abrasive disc pressing device (322), which comprises a threaded lifting rod assembly and a rolling bearing (3221); the threaded lifting rod assembly comprises a screw sleeve and a screw rod, the screw sleeve is connected with the outer surface of the angle grinder (32), and the lower end of the screw rod is connected with the inner ring of the rolling bearing (3221); in use, the outer ring of the rolling bearing (3221) contacts the outer surface of the abrasive disc (321).

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