Rapid calibration device for grinding angle of knife sharpener

Abstract

The utility model belongs to the technical field of woodworking tools, and particularly relates to a rapid calibration device for the grinding angle of a knife sharpener. The device comprises a calibration seat, a sliding vernier and a locking mechanism. The locking mechanism can lock and unlock the sliding vernier by simply pulling up and rotating the knob; in addition, due to the fact that the independent polishing angle calibration device is adopted, repeated disassembly and assembly of the measuring scale in the calibration process can be avoided.

Description

Technical Field

[0001] This application belongs to the field of woodworking tool technology, specifically relating to a device for quickly calibrating the grinding angle of a knife sharpener. Background Technology

[0002] Please refer to the Chinese patent application: A top angle grinder [Publication No.: CN118752322A].

[0003] This patent discloses a measuring mechanism for use with a knife sharpener. In use, the grinding angle measuring scale of the measuring mechanism must first be fixed to the sharpener's mounting bracket. After the blade is fixed in place, i.e., the grinding angle is calibrated, the measuring scale is then removed. The sharpener is then operated to repeatedly grind the blade on an oilstone to achieve the desired blade angle. While this measuring mechanism can quantitatively calibrate the blade's grinding angle, the need for multiple disassembly and reassembly operations of the measuring scale during use is detrimental to improving blade calibration and sharpening efficiency. Utility Model Content

[0004] In view of this, this application provides a device for rapid calibration of the grinding angle of a knife sharpener, in order to solve all or part of the technical problems described in the background section of this application.

[0005] The innovative idea of ​​this application is to use an independent grinding angle calibration device. During use, the angle can be quickly calibrated by simply placing the grinder in the grinder placement position. There is no need to use a measuring ruler and fix the measuring ruler to the grinder, which can avoid repeated disassembly and assembly of the measuring ruler and improve the efficiency of blade processing.

[0006] The solution proposed in this application to solve its technical problem is as follows:

[0007] A device for rapid calibration of grinding angle of a knife sharpener includes a calibration base and a sliding vernier; the calibration base is provided with an inclination scale line; the sliding vernier is provided with a reference plane; the reference plane and the inclination scale line are parallel to each other; the sliding vernier is disposed on the calibration base and can slide back and forth along a direction perpendicular to the reference plane.

[0008] Preferably, the calibration base is further provided with a guide shaft; the sliding vernier is provided with a guide hole; the sliding vernier is slidably assembled on the calibration base through the cooperation of the guide hole and the guide shaft.

[0009] Preferably, the calibration base is provided with a vernier guide rail; the sliding vernier is provided with a guide rail groove whose structure and size match the vernier guide rail; the sliding vernier is slidably assembled on the calibration base through the cooperation of the vernier guide rail and the guide rail groove.

[0010] Preferably, the calibration base is provided with a plurality of scale line positioning holes; the sharpening angle quick calibration device for the sharpener also includes a locking mechanism; the locking mechanism is provided on the sliding vernier; the locking mechanism includes a knob, a locking head, and an elastic element; the knob is connected to the locking head, and the locking head can be inserted into or disengaged from the scale line positioning hole; the elastic element can provide elastic restoring force when the locking head disengages from the scale line positioning hole.

[0011] Pressing the knob inserts the locking head into the scale positioning hole to lock the sliding vernier in a fixed position on the calibration base, thus facilitating the calibration of the blade's grinding angle. Pulling out the knob disengages the locking head from the scale positioning hole, allowing the sliding vernier to slide and adjust on the calibration base. After pulling out the knob, the elastic element exerts a pulling force on the knob and locking head through its elastic restoring force. Once the sliding vernier is in the correct position, releasing the knob quickly locks the sliding vernier through this pulling action.

[0012] Preferably, the sliding cursor includes a cursor base and a cursor top seat; the cursor base is provided with a locking hole; the cursor top seat is provided with a spring cavity, and the bottom of the spring cavity is provided with a connecting hole; the cursor top seat is fixedly mounted on the cursor base, and the locking hole and the spring cavity are opposite each other; the knob includes a handle and a connecting part; the locking head includes a locking crown and a locking head; the locking head is disposed in the locking hole and the locking head can be inserted into the scale positioning hole through the locking hole; the connecting part of the knob passes through the connecting hole and is connected to the locking head; the elastic element is disposed in the spring cavity and its two ends abut against the bottom of the spring cavity and the locking crown of the locking head, respectively.

[0013] Preferably, the locking hole includes a crown section and a head section; wherein the head section is a through hole. The crown portion of the locking head is disposed within the crown section, and the head extends into the head section. The crown section can limit the locking head to prevent it from over-embedded into the scale positioning hole.

[0014] Preferably, the knob includes a knob cap and a connecting rod; the knob cap is provided with a connecting rod hole, and the connecting rod passes through the connecting rod hole to connect to the locking head.

[0015] Preferably, the vernier top seat is provided with a knob clamping groove; the handle portion of the knob includes a cylindrical portion and an oblong portion; the structure and size of the oblong portion are consistent with the knob clamping groove and can be inserted into the knob clamping groove. Further, the knob clamping groove is provided with a support groove for placing the oblong portion.

[0016] When adjusting the fixed position of the sliding cursor, i.e., the grinding angle, first pull the waist-shaped part of the knob out of the knob clamping slot, then rotate the waist-shaped part to place it on the resting slot. At this time, because the waist-shaped part is blocked by the resting slot, the locking head will not enter the scale positioning hole under the action of the spring force. After the sliding cursor is adjusted to the correct position, i.e., the grinding angle is adjusted, rotate the knob to make the waist-shaped part parallel to the rotating clamping slot, and then release the knob. The locking head will enter the corresponding scale positioning hole under the action of the elastic restoring force. Thus, the adjustment and locking of the sliding cursor can be quickly completed by simply pulling and rotating the knob.

[0017] Preferably, the calibration base is provided with a sharpener placement position. Further, the sharpener placement position is a flat step provided on the calibration base.

[0018] Preferably, the sharpening angle rapid calibration device for the sharpener also includes a wear-resistant reference component, which is fixedly mounted on the calibration base to form a reference plane.

[0019] Beneficial technical effects:

[0020] 1. By improving the structure of the existing calibration mechanism, a grinding angle calibration device for a knife sharpener that does not require disassembly is provided. When in use, simply place the knife sharpener on the calibration position to quickly complete the calibration of the grinding angle.

[0021] 2. An easy-to-operate locking mechanism is adopted, which can lock and unlock the sliding cursor by simply pulling up and turning the knob. This avoids the need to tighten and loosen the locking screws to complete the locking and unlocking function of the existing tool sharpener measuring mechanism, and further improves the calibration and processing efficiency of the blade.

[0022] The technical solution and technical effects of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 : 3D structural diagram of a quick calibration device for the grinding angle of a knife sharpener;

[0024] Figure 2 : Schematic diagram of the use of the sharpening angle quick calibration device for the knife sharpener;

[0025] Figure 3 : Exploded view of the structure of the quick calibration device for the grinding angle of a knife sharpener;

[0026] Figure 4 : Schematic diagram of the locking mechanism;

[0027] Icon description:

[0028] 1-Calibration base, 11-Inclination scale line, 12-Guide shaft, 13-Scale line positioning hole, 14-Sharpening tool placement position, 15-Wear-resistant reference component;

[0029] 2-Sliding vernier, 21-Reference plane, 22-Guide hole, 23-Vernier base, 24-Vernier top seat;

[0030] 231-Locking hole; 232-Locking crown section; 233-Locking head section;

[0031] 241-Spring cavity, 242-Connecting hole, 243-Knob clamping groove, 244-Supporting groove;

[0032] 3-Locking mechanism;

[0033] 31-Knob, 32-Locking head, 33-Elastic element;

[0034] 311-Handheld part, 312-Connecting part, 313-Knob cap, 314-Connecting rod, 315-Connecting rod hole, 316-Cylindrical part, 317-Oval part;

[0035] 321-Locking crown, 322-Locking head. Detailed Implementation

[0036] Please see Figures 1-4 The sharpening angle quick calibration device for the sharpening tool provided in this application includes a calibration base 1, a sliding vernier 2, and a locking mechanism 3.

[0037] The sliding cursor 2 is movably mounted on the calibration base 1 and can slide back and forth on the calibration base 1 to adjust the clamping length of the blade. The locking mechanism 3 is movably mounted on the sliding cursor 2 and can be pulled up and rotated to lock or unlock the sliding cursor 2 on the calibration base 1.

[0038] The calibration base 1 is provided with an inclination scale line 11, a guide shaft 12, a scale line positioning hole 13, and a sharpener placement position 14. Specifically: the inclination scale line 11 is set on the upper surface of the calibration base 1 for easy reading during calibration; the guide shaft 12 is symmetrically arranged on both sides of the calibration base 1, enabling stable navigation of the sliding vernier 2 from both sides; the scale line positioning hole 13 is set on the upper surface of the calibration base 1 to facilitate the insertion or removal of the locking head 322 in the locking mechanism 3; and the sharpener placement position 14 is used to place the sharpener.

[0039] As can be seen from the existing top angle sharpener (publication number: CN118752322A), when the height of the sharpener is fixed, the extension length or clamping length of the blade uniquely determines the angle of the cutting edge; thus, different sharpening angles of the blade and the clamping length of the blade correspond one-to-one; the clamping lengths corresponding to different sharpening angles are marked on the calibration base 1 in advance to form the inclination scale line 11 (with the sharpener placement position 14 as the zero point); when the blade needs to be processed, the sharpener is placed on the sharpener placement position 14, and the blade is fixed on the sharpener with different extension lengths with reference to the inclination scale line 11, so that the required cutting edge angle can be obtained by grinding.

[0040] The sliding vernier 2 is provided with a reference plane 21 and a guide hole 22. The reference plane 21 is used to calibrate the blade clamping length with the sharpener, and the inclination scale line 11 is parallel to the reference plane 21. The guide hole 22 is used to cooperate with the guide shaft 12 on the calibration base 1 to achieve the sliding connection of the sliding vernier 2. The sliding vernier 2 is set on the calibration base 1 through the cooperation of the guide shaft 12 and the guide hole 22 and can slide back and forth in a direction perpendicular to the reference plane 21.

[0041] In a variation of the implementation, another connection method can be used to achieve the reciprocating sliding connection of the sliding vernier 2 on the calibration base 1. The calibration base 1 is provided with a vernier guide rail, and the sliding vernier 2 is provided with a guide rail groove; the structure and size of the guide rail groove match the vernier guide rail. The sliding vernier 2 is slidably assembled on the calibration base 1 through the cooperation of the vernier guide rail and the guide rail groove.

[0042] In a modified embodiment, the sharpening angle rapid calibration device for the tool grinder further includes a wear-resistant reference element 15, which is fixedly mounted on the calibration base 1 to form a reference plane 21 or a portion thereof. Since the reference plane 21 is frequently in contact with the blade, it is easily damaged, affecting its performance. Using a wear-resistant and scratch-resistant material to make the wear-resistant reference element 15 can effectively extend the service life of the sliding vernier 2 and facilitates replacement after wear.

[0043] To facilitate the locking mechanism 3 in performing rapid locking and unlocking functions, the sliding cursor 2 in this application adopts a split structure. The sliding cursor 2 includes a cursor base 23 and a cursor top seat 24.

[0044] The vernier base 23 is provided with a locking hole 231; the locking hole 231 includes a locking crown section 232 and a locking head section 233; the diameter of the locking crown section 232 is larger than the diameter of the locking head section 233; the locking crown section 232 and the locking head section 233 form a stepped hole structure.

[0045] The vernier top seat 24 is provided with a spring cavity 241 and a knob clamping groove 243; the bottom of the spring cavity 241 is provided with a connecting hole 242, which extends to the knob clamping groove 243. The upper surface of the rotary clamping groove 243 is provided with several resting grooves 244.

[0046] The vernier top seat 24 is fixedly mounted on the vernier base 23, and the locking hole 231 and the spring cavity 241 are in relative communication. The vernier top seat 24 and the vernier base 23 can be fixedly connected in various ways, such as screw and screw hole mating and snap-fit ​​connection, etc., which will not be elaborated here.

[0047] The locking mechanism 3 includes a knob 31, a locking head 32, and an elastic element 33; the elastic element 33 is disposed in the spring cavity 241, the locking head 32 is disposed in the locking hole 231, and the knob 31 passes through the knob clamping groove 243 and the connecting hole 242 to connect to the locking head 32.

[0048] The knob 31 includes a handle 311 and a connecting part 312; the handle 311 and the connecting part 312 can be integrally formed or separate. The knob 31 with a separate structure includes a knob cap 313 and a connecting rod 314; the knob cap 313 is provided with a connecting rod hole 315, and the connecting rod 314 passes through the connecting rod hole 315 and connects to the locking head 32.

[0049] The handle portion 311 of the knob 31 includes a cylindrical portion 316 and an oblong portion 317. The structure and size of the oblong portion 317 are consistent with the knob clamping groove 243 and can be inserted into or removed from the knob clamping groove 243. The cylindrical portion 316 is the hand-held operating part, and the oblong portion 317 is used to cooperate with the knob clamping groove 243 and the resting groove 244 to complete the locking and unlocking functions of the sliding cursor 2.

[0050] Locking head 32 includes a crown portion 321 and a head portion 322; see also Figure 4 The crown portion 321 is disposed within the crown section 232 of the locking hole 231, and the lock head 322 is disposed within the lock head section 233 of the locking hole 231. The locking hole 231 is a through hole, so that the lock head 322 can pass through the lock head section 233 and be embedded in the scale positioning hole 13 on the calibration base 1.

[0051] The locking crown section 232 can limit the locking head 32 by cooperating with the locking crown part 321 to prevent the locking head 322 from being overly embedded in the scale positioning hole 13 on the calibration seat 1.

[0052] The connection between the connecting part 312 of the knob 31 and the locking crown part 321 of the locking head 32 can be achieved by means of threaded connection and / or snap-fit ​​connection.

[0053] The elastic element 33 is disposed inside the spring cavity 241 and its two ends abut against the bottom of the spring cavity 241 and the locking crown 321 of the locking head 32, respectively. The elastic element 33 can provide elastic restoring force when the locking head 32 disengages from the scale positioning hole 13.

[0054] Explanation of principles and effects:

[0055] When it is necessary to adjust the fixed position of the sliding vernier 2, that is, the grinding angle of the blade, first pull the waist-shaped part 317 of the knob 31 out of the knob clamping groove 243, then rotate the waist-shaped part 317 and place it on the resting groove 244; at this time, because the waist-shaped part 317 is blocked by the resting groove 244, the locking head 32 will not enter the scale line positioning hole 13 under the action of the elastic force; after the sliding vernier 2 is adjusted to the position, that is, after the grinding angle is adjusted, rotate the knob 31 to make the waist-shaped part 317 and the rotating clamping groove 243 parallel, and then release the knob 31. The locking head 32 will enter the corresponding scale line positioning hole 13 under the action of the elastic restoring force.

[0056] The locking head 32 can lock the sliding cursor 2 in a fixed position on the calibration base 1 when inserted into the scale positioning hole 13, thus facilitating the grinding angle calibration of the blade with the sharpener; the locking head 32 can unlock the sliding cursor 2 when disengaged from the scale positioning hole 13, thus facilitating the sliding adjustment of the sliding cursor 2 on the calibration base 1; after the knob 31 is pulled out, the elastic element 33 can exert a pulling action on the knob 31 and the locking head 32 through the elastic restoring force. When the position of the sliding cursor 2 is adjusted, releasing the knob 31 can quickly lock the sliding cursor 2 through this pulling action.

[0057] Therefore, the sharpening angle quick calibration device for the sharpener disclosed in this application can quickly complete the adjustment and locking of the sliding vernier through simple pulling and rotating knob operations; at the same time, since an independent sharpening angle calibration device is used, the repeated disassembly and assembly of the measuring ruler during the calibration process can be avoided.

[0058] The technical solutions and effects of this application have been described in detail above with reference to the accompanying drawings and specific embodiments. It should be noted that those skilled in the art can develop other embodiments based on this. Any simple modifications and equivalent substitutions that do not depart from the innovative concept of this application are covered by this application and fall within the protection scope of this patent.

Claims

1. A device for quickly calibrating the grinding angle of a knife sharpener, comprising a calibration seat (1) and a sliding cursor (2), wherein the calibration seat (1) is provided with an inclination scale (11), the sliding cursor (2) is provided with a reference plane (21), the reference plane (21) and the inclination scale (11) are parallel to each other, and the sliding cursor (2) is arranged on the calibration seat (1) and can slide back and forth along a direction perpendicular to the reference plane (21).

2. The device for quickly calibrating the grinding angle of a knife sharpener according to claim 1, wherein the calibration seat (1) is provided with a cursor guide rail, the sliding cursor (2) is provided with a guide rail groove matching the cursor guide rail in structure and size, and the sliding cursor (2) is slidably arranged on the calibration seat (1) through cooperation of the cursor guide rail and the guide rail groove.

3. The device for quickly calibrating the grinding angle of a knife sharpener according to claim 1, wherein the calibration seat (1) is further provided with a guide shaft (12), the sliding cursor (2) is provided with a guide hole (22), and the sliding cursor (2) is slidably arranged on the calibration seat (1) through cooperation of the guide hole (22) and the guide shaft (12).

4. The device for quickly calibrating the grinding angle of a knife sharpener according to claim 1, wherein the calibration seat (1) is provided with a plurality of scale positioning holes (13), the device further comprises a locking mechanism (3), the locking mechanism (3) is arranged on the sliding cursor (2), the locking mechanism (3) comprises a knob (31), a locking head (32) and an elastic member (33), the knob (31) is connected to the locking head (32), the locking head (32) can be embedded in or out of the scale positioning hole (13), and the elastic member (33) can provide elastic restoring force when the locking head (32) is out of the scale positioning hole (13).

5. The device for quickly calibrating the grinding angle of a knife sharpener according to claim 4, wherein the sliding cursor (2) comprises a cursor base (23) and a cursor top (24), the cursor base (23) is provided with a locking hole (231), the cursor top (24) is provided with a spring cavity (241), the cavity bottom of the spring cavity (241) is provided with a connecting hole (242), the cursor top (24) is fixedly arranged on the cursor base (23), the locking hole (231) and the spring cavity (241) are opposite to each other, the knob (31) comprises a hand-holding part (311) and a connecting part (312), the locking head (32) comprises a lock crown part (321) and a lock head part (322), the locking head (32) is arranged in the locking hole (231) and the lock head part (322) can be embedded in the scale positioning hole (13) through the locking hole (231), and the connecting part (312) of the knob (31) is connected to the locking head (32) through the connecting hole (242). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The elastic member (33) is arranged in the spring cavity (241) and abuts against the cavity bottom of the spring cavity (241) and the locking crown (321) of the locking head (32) at two ends respectively.

6. The device according to claim 5, wherein: The knob (31) comprises a knob cap (313) and a connecting rod (314); The connecting rod (314) is connected to the locking head (32) through the connecting rod hole (315) of the knob cap (313).

7. The device according to claim 5, wherein: The vernier top base (24) is provided with a knob clamping groove (243); The hand holding part (311) of the knob (31) comprises a cylindrical part (316) and a waist-shaped part (317); The waist-shaped part (317) is consistent in structure and size with the knob clamping groove (243) and can be embedded in the knob clamping groove (243).

8. The device according to claim 7, wherein: The knob clamping groove (243) is provided with a resting groove (244) for placing the waist-shaped part (317).

9. The sharpener angle quick calibration device of claim 1, wherein: The calibration seat (1) is provided with a knife sharpener placing position (14).

10. The device according to claim 1, wherein: The device further comprises a wear-resistant reference member (15) which is fixedly arranged on the calibration seat (1) to form the reference plane (21).

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