FIXED-ANGLE SHARPENER AND SHARPENING METHOD

Abstract

A fixed-angle sharpener which includes a supporting body, an angle block, an angle wheel, an angle fixing assembly and a sharpening mechanism. The angle block is mounted to the supporting body, the angle block can rotate and move up and down, the angle wheel is connected to the angle block, the angle wheel can rotate, and the angle wheel is fixed by the angle fixing assembly after rotating for angle adjustment. The sharpening mechanism includes a sharpening bar assembly, and the sharpening bar assembly is connected with the angle wheel. When the cutter is sharpened by using the sharpener, the angle of the sharpening bar assembly is adjusted and fixed, the angle block can slide up and down during the sharpening process, and in this way, a consistent sharpening angle can be achieved by moving up and down as a whole regardless of a shape of the cutter.

Claims

1. A fixed-angle sharpener, comprising: a supporting body; an angle adjusting mechanism which comprises an angle block, an angle wheel and an angle fixing assembly, the angle block is mounted to the supporting body, the angle block is capable of rotating and moving up and down, the angle wheel is connected to the angle block, the angle wheel is capable of rotating, and the angle wheel is fixed by the angle fixing assembly after rotating for angle adjustment; and a sharpening mechanism which comprises a sharpening bar assembly, and the sharpening bar assembly is connected with the angle wheel; wherein in sharpening, the angle wheel is rotated to adjust an angle of the sharpening bar assembly and the angle is fixed after adjustment is completed; and in a sharpening process, the angle block moves up and down on the supporting body to ensure a consistent sharpening angle.

2. The fixed-angle sharpener according to claim 1, wherein the angle fixing assembly comprises 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, and the angle pin is inserted into the angle holes and the positioning holes to realize fixing of an angle of the angle wheel.

3. The fixed-angle sharpener according to claim 2, wherein the angle fixing assembly further comprises an angle locking member, and the angle locking member is capable of abutting against the angle wheel, and after the angle of the angle wheel is adjusted, the angle locking member abuts against the angle wheel to realize the fixing.

4. The fixed-angle sharpener according to claim 3, wherein the angle locking member is a locking screw, there are at least two groups of locking screws provided, and the locking screws are mounted to the angle block.

5. The fixed-angle sharpener according to claim 4, wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body.

6. The fixed-angle sharpener according to claim 3, wherein the sharpening bar assembly is capable of moving along an axial direction of the sharpening bar assembly on the angle wheel.

7. The fixed-angle sharpener according to claim 6, wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body.

8. The fixed-angle sharpener according to claim 6, wherein the fixed-angle sharpener further comprises a height adjustment supporting assembly, and the height adjustment supporting assembly is configured for supporting the angle block to keep a lowest point of the angle block at a height position.

9. The fixed-angle sharpener according to claim 8, wherein the height adjusting supporting assembly comprises a screw hole seat and a threaded rotating block, and a supporting height is adjusted by rotating the threaded rotating block.

10. The fixed-angle sharpener according to claim 1, wherein the fixed-angle sharpener further comprises a cutter block, and the cutter block is configured for clamping a cutter to be sharpened.

11. The fixed-angle sharpener according to claim 1, wherein the angle fixing assembly comprises an angle locking member, and the angle locking member is capable of abutting against the angle wheel, and after the angle of the angle wheel is adjusted, the angle locking member abuts against the angle wheel to realize the fixing.

12. The fixed-angle sharpener according to claim 11, wherein the angle locking member is a locking screw, there are at least two groups of locking screws provided, and the locking screws are mounted to the angle block.

13. The fixed-angle sharpener according to claim 12, wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body.

14. The fixed-angle sharpener according to claim 11, wherein the sharpening bar assembly is capable of moving along an axial direction of the sharpening bar assembly on the angle wheel.

15. The fixed-angle sharpener according to claim 14, wherein the supporting body is a shaft body, and the angle block is capable of moving up and down along the shaft body and rotating around the shaft body.

16. The fixed-angle sharpener according to claim 14, wherein the fixed-angle sharpener further comprises a height adjustment supporting assembly, and the height adjustment supporting assembly is configured for supporting the angle block to keep a lowest point of the angle block at a height position.

17. The fixed-angle sharpener according to claim 16, wherein the height adjusting supporting assembly comprises a screw hole seat and a threaded rotating block, and a supporting height is adjusted by rotating the threaded rotating block.

18. A sharpening method, based on the fixed-angle sharpener according to claim 1, comprises following steps: clamping and fixing the cutter to be sharpened on the cutter block and selecting a mode according to sharpening requirements from following modes: Mode 1, in which rotation is performed to adjust the angle of the angle wheel to match an inclination angle of the sharpening bar assembly with an sharpening angle of a blade, then the angle wheel is fixed using the angle fixing assembly, and the sharpening bar assembly is operated to sharpen the cutter, a consistent sharpening angle is ensured through up-and-down movement of the angle block on the supporting body during the sharpening process; Mode 2, in which the supporting height of the height adjustment supporting assembly is adjusted to realize adjustment of the sharpening bar assembly, and the sharpening bar assembly is operated to sharpen the cutter without fixing of the angle of the angle wheel; and Mode 3, in which the supporting height of the height adjustment supporting assembly is adjusted to realize angle adjustment of the sharpening bar assembly, and after the angle adjustment, the angle wheel is locked to fix the angle, and then the sharpening bar assembly is operated to sharpen the cutter, and the consistent sharpening angle is ensured through up-and-down movement of the angle block on the supporting body during the sharpening process.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure will be further explained with reference to drawings and examples.

[0021] FIG. 1 is a schematic view of an overall structure of a fixed-angle sharpener according to the disclosure;

[0022] FIG. 2 is a schematic view of a side of an angle adjusting mechanism of the fixed-angle sharpener according to the disclosure;

[0023] FIG. 3 is a schematic view of the fixed-angle sharpener according to the disclosure from a top perspective;

[0024] FIG. 4 is a schematic exploded structural view of a cutter block according to the disclosure;

[0025] FIG. 5 is an enlarged schematic view of the angle adjusting mechanism according to the disclosure; and

[0026] FIG. 6 is a schematic view of a traditional fixed-angle sharpener during sharpening.

DETAILED DESCRIPTION

[0027] The following description is only intended to disclose the present application so as to enable those skilled in the art to implement the disclosure. The embodiments in the following description are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principle of the disclosure defined in the following description can be applied to other implementations, modified, improved and equivalent schemes and other schemes without departing from the spirit and scope of the disclosure.

Embodiment 1

[0028] The fixed-angle sharpener, as shown in FIG. 1, includes a base 1, a cutter block 3, a supporting body 4, an angle adjusting mechanism 6 and a sharpening mechanism 2.

[0029] The supporting body 4 can be a frame body, a shaft body or others. In this embodiment, the shaft body is adopted, the shaft body is connected to the base 1. The angle adjusting mechanism 6 includes an angle block 66, an angle wheel 67 and an angle fixing assembly 60. The angle block 66 is mounted to the supporting body 4 and the angle block and the supporting body are matched with each other through a linear bearing, the angle block 66 can rotate and move up and down, the angle wheel 67 is connected to a rotating shaft 68 on the angle block 66, the angle wheel 67 can rotate, and the angle wheel 67 is fixed by the angle fixing assembly 60 after rotating for angle adjustment.

[0030] The sharpening mechanism 2 includes a sharpening bar assembly 21 and a sharpening stone 22. The sharpening bar assembly 21 is of a bar structure mounted with a sharpening stone rack 23, and the sharpening stone rack 23 can be configured for mounting the sharpening stone 22 and there are two sharpening stones 22; and a spring 24 is mounted to the sharpening bar assembly 21 for causing the sharpening stone rack 23 to clamp the sharpening stones 22.

[0031] The sharpening bar assembly 21 passes through a hole in the angle wheel 67 and is matched with the angle wheel 67 through a linear bearing. In sharpening, the angle wheel 67 is rotated to adjust an angle of the sharpening bar assembly 21, and the angle is fixed after adjustment, and thus a consistent sharpening angle is ensured through up-and-down movement of the angle block 66 on the supporting body 4 during sharpening.

[0032] The cutter block 3 is mounted to the base 1 to clamp the cutter to be sharpened. As shown in FIG. 4, the cutter block 3 includes at least two cutter holders 32, a mounting frame 31 and a fixing seat 34. Specifically, the fixing seat 34 is provided with a receptacle part 341 for mounting the mounting frame 31, the receptacle part 341 is of a polyhedral structure. In this embodiment, the polyhedral structure is an octagonal prism, and the mounting frame 31 is provided with a mounting hole 311 matched with an outline of the polyhedral structure. By switching a mounting contact surface between the mounting hole 311 and the receptacle part 341, an angle of the mounting frame 31 can be adjusted. A fixing assembly is configured to fix the mounting frame 31 on the receptacle part 341. When the cutter is turned over, the fixing component is released and the mounting frame 31 is turned over and remounted to the receptacle part 341.

[0033] The cutter holders 32 are movably mounted to the mounting frame 31, and a distance between the cutter holders 32 can be adjusted according to a length of the cutter. Specifically, the mounting frame 31 is provided with an adjusting groove 312, and an adjusting screw 313 passes through the adjusting groove 312 to be connected with the cutter holders 32. Positions of the cutter holders 32 can be adjusted by loosening and adjusting a position of the adjusting screw 313 in the adjusting groove 312, and the mounting frame 31 can serve to adjust a mounting angle so as to adapt to different shapes and sizes of cutters or different sharpening requirements. The fixing assembly adopts a fixing bolt 33, and the fixing seat 34 is provided with a bolt hole 342 matched with the fixing bolt 33. A diameter of a head of the fixing bolt 33 is larger than a diameter of the mounting hole 311 for pressing the mounting frame 31 after tightening. The mounting frame 31 and the fixing seat 34 are fastened by the fixing bolt 33. When the cutter needs to be turned over, the fixing bolt 33 is unscrewed and the mounting frame 31 is turned over and then fixed again.

[0034] In this embodiment, as shown in FIGS. 1 to 3, the angle fixing assembly 60 includes an angle hole cover plate 61 and an angle pin 62, and the angle hole cover plate 61 is provided with a plurality of angle holes 64. Specifically, the angle hole cover plate 61 is mounted to the angle block 66 through two fixing pins. The angle hole cover plate 61 is a circular plate with six angle holes 64 distributed thereon, which are at six angles respectively, namely, 15, 16, 17, 20, 25 and 30 degrees. In other embodiments, other angles can be set. Correspondingly, the angle wheel 67 is provided with six positioning holes 69, and the angle pin 62 is inserted into the angle holes 64 and the positioning holes 69 to realize fixing of an 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 is convenient for a user to quickly adjust and fix the angle. The support body 4 is matched with the angle block through a linear bearing, and thus the angle block can freely slide up and down on the support shaft, and in this way, a consistent sharpening angle can be achieved by moving up and down as a whole regardless of a width, a length and a curve of the cutter.

[0036] In addition, in order to facilitate the user to adjust with more angles, the angle fixing assembly 60 further includes an angle locking member 65, and the angle locking member 65 can press the angle wheel 67. After the angle of the angle wheel 67 is adjusted, the angle locking member 65 presses against the angle wheel 67 to realize fixing. Specifically, the angle locking member 65 is a locking screw, and there are at least two groups of locking screws, which are respectively arranged above and below the angle wheel 67, and the locking screws are mounted to the angle block 66.

[0037] When the user requires a special angle, such as 17.5 degrees or 13 degrees, the angle pin 62 is released and the angle wheel 67 can rotate freely. After adjustment of the special angle is completed, the angle is fixed by two locking screws above and below the angle wheel.

[0038] By matching two threaded rotating blocks on a supporting spindle, the angle can be finely adjusted to meet the user's requirements.

[0039] Embodiment 2: on the basis of Embodiment 1, a height adjustment supporting assembly 5 is added in this embodiment. The height adjustment supporting assembly 5 is configured to support the angle block 66 to keep a lowest point of the angle block 66 at a height position. Specifically, the height adjustment supporting assembly 5 can adjust a height on the support body 4, so as to adjust the lowest position of the angle block 66.

[0040] The height adjustment supporting assembly 5 can adopt any structure that can realize lifting, or can also be realized by arranging the support body as a telescopic structure. In this embodiment, the height adjustment supporting assembly 5 includes a screw hole seat 52 and a threaded rotating block 51, and a supporting height can be adjusted by rotating the threaded rotating block 51.

[0041] Preferably, as shown in FIG. 1, both the screw hole seat 52 and the threaded rotating block 51 are provided with a fixing screw 53. The fixing screw on the threaded rotating block 51 is configured to tighten and fix against the supporting body or the screw hole seat 52 after rotating for height adjustment. The fixing screw on the screw hole seat 52 is configured to fix the screw hole seat 52 to the supporting body after be tightened, and a position of the screw hole seat 52 on the supporting body can be adjusted after be loosened.

[0042] In addition, in other embodiments, the angle block 66 may be provided with a fastening device, such as a fastening bolt, fixing is made by the fastening device when the height is fixed.

[0043] A sharpening method, based on the fixed-angle sharpener in any of the above embodiments, includes following steps: [0044] clamping and fixing the cutter to be sharpened on the cutter 3 block and selecting a mode according to sharpening requirements from following modes. [0045] Mode 1: rotation is performed to adjust the angle of the angle wheel 67 to match an inclination angle of the sharpening bar assembly 21 with an sharpening angle of a blade, then the angle wheel 67 is fixed using the angle fixing assembly 60, and the sharpening bar assembly 21 is operated to sharpen the cutter, a consistent sharpening angle is ensured through up-and-down movement of the angle block 66 on the supporting body 4 during the sharpening process. In this mode, only the angle of the sharpening bar assembly is fixed, with no need to fix the height. Under supporting from contact between the sharpening stone and the cutter, the angle block 66 does not slide down and the angle block 66 can move up and down freely, the angle between the sharpening stone and the blade is prevented from slightly changing when the sharpening bar assembly drives the sharpening stone to move to the left or right, resulting in a problem of poor curve consistency after sharpening. [0046] Mode 2: the supporting height of the height adjustment supporting assembly 5 is adjusted to realize adjustment of the sharpening bar assembly 21, and the sharpening bar assembly 21 is operated to sharpen the cutter without fixing of the angle of the angle wheel 67. In this mode, after the sharpening bar assembly reaches its required angle by adjusting the height of the angle block 66, the angle wheel is not locked, and the height is operated by keeping the angle block against the thread rotating block 51, and thus a sharpening operation in this mode can be more flexible, but with low consistency effect than that in Mode 1. [0047] Mode 3: the supporting height of the height adjustment supporting assembly 5 is adjusted to realize angle adjustment of the sharpening bar assembly 21, and after the angle adjustment, the angle wheel 67 is locked to fix the angle, and then the sharpening bar assembly 21 is operated to sharpen the cutter, and the consistent sharpening angle is ensured through up-and-down movement of the angle block 66 on the supporting body 4 during the sharpening process. This mode provides another angle adjustment method over Mode 1.

[0048] It is should be appreciated by those skilled in the art that the above description and the embodiments of the disclosure shown in the drawings are only by way of example and do not limit the disclosure. The object of the disclosure has been completely and effectively achieved. The function and structural principle of the disclosure have been shown and explained in the embodiments; any variation and modification can be made to the embodiments of the disclosure without departing from the principle.