JP2000254842A - Sharpening apparatus with sharpening angle holding tool for graver, chisel, and plane blade combination - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a blade of good cutting quality even by a beginner by a method wherein a proper angle is kept until sharpening finish once a cutting edge is fixed at a proper angle by combining a blade angle regulation function to regulate and fix a blade angle suitable for a blade with a function to regulate the inclination angle of a cutting edge. SOLUTION: A blade angle regulation function wherein a grinding wheel B is situated in the middle between two wheels 1, a blade C is inserted in a blade support tool 3, and a blade stand 2 supported at a fulcrum 10 is inclined, an angle at which a cutting edge makes contact with a grinding wheel surface B is adjusted to a blade angle suitable for a blade and fixed is combined with a function to regulate the inclination angle of a cutting edge suitable for a blade by rotating a blade support tool 3 in a circumferential direction. This constitution performs sharpening of a blade with an optimum angle maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sharpening tool for more accurately performing polishing or sharpening while maintaining an optimal cutting edge angle of chisels and chisels having various cutting edges, such as flat blades.

[0002]

2. Description of the Related Art It is necessary to adjust both the blade angle adjustment function and the blade inclination angle as conditions for a grinder that can cope with various blade edge shapes. However, there is no sharpening tool that has both functions. Although there is a property with a blade angle adjustment function in a grinding tool with only a flat blade such as a plane or a chisel, the whole surface of the grinding stone cannot be used because the fulcrum roller moves on the grinding wheel surface. (See No. 57-57895)

[0003]

The chisel, chisel and the like have a variety of cutting edge shapes, and since the blade width is narrow, it requires skill to grind while maintaining the grind angle. In particular, it is essential that the triangular sword be symmetrical about the intersection of the V-shape, but it is very difficult to grind it accurately.

If the entire surface of the grinding wheel is to be used with a rectangular grinding wheel for hand grinding, there is a tendency that only a part of the grinding wheel is used because the obstacle such as the occurrence of camera shake is likely to occur, and the grinding wheel surface is deformed due to uneven wear. If used as it is, the shape of the cutting edge will be deformed and a sharp cutting tool cannot be obtained. In addition, there is a problem that the grindstone surface needs to be corrected frequently.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a "blade angle adjusting function" for adjusting and fixing a blade angle suitable for a blade and a "function for adjusting a tilt angle of a blade edge".
Once the angle is fixed at an appropriate angle, the appropriate angle can be maintained until grinding, so that even a beginner can obtain a sharp blade.

When a rectangular grinding wheel for hand grinding is used, the width of the wheel rolling on a plane is set to approximately twice the width of the grinding wheel, so that the width and the longitudinal direction of the grinding wheel surface can be fully used, so that there is little uneven wear and the grinding wheel is small. The surface repair period is long and the grinding wheel life is long.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION There are various shapes such as a flat blade, an oblique blade, a V-shape, and a semi-round shape in a cutting edge shape such as a chisel, a chisel, a plane,
In order to grind it accurately, it is necessary to maintain a blade angle and a blade angle suitable for the shape of the blade.

<< 1 >> Basic Function In FIGS. 1 and 2, a tool rest (2) having two wheels (1) rolling on a plane (A) and a tool support (3) attached to the tool rest (2). ) And a pressing plate (4) for holding the blade support (3). Blade support (3)
Has a thrust ring (7), and the tool rest (2) and the pressing plate (4) have a thrust receiver (8). By the engagement of the two, the movement of the cylinder in the axial direction is fixed and the cylinder rotates in the circumferential direction. A grindstone (B) is arranged between the two wheels (1), a handle of the knife is inserted into a knife support (3), a tool rest (2) supported by a fulcrum (10) is inclined, and the cutting edge is a grindstone surface. (B)
"Blade angle adjustment function" that fixes the angle of contact with the blade with the blade angle suitable for the blade with the blade fixing bolt (5). Next, the blade support (3) is rotated in the circumferential direction to adjust the inclination angle of the blade suitable for the blade, and has a "blade angle adjustment function" for fixing with the pressing bolt (6). It is a grinding tool that can perform blade grinding while maintaining the optimum angle of the blade by having both of these.

In the embodiment shown in FIGS. 3 and 4, the blade support (3) is removed, and a wide blade (C) is attached between the tool rest (2) and the pressing plate (4) with a flat blade. The blade angle can be adjusted by performing the above-described blade angle adjustment.

In the embodiment shown in FIGS. 5 and 6, an attachment (11) is installed on a main body of a known grinding machine which rotates or reciprocates by power, and a fulcrum (1) is provided.
0), the grinding tool with the grinding angle holder of the present invention is attached, and the “blade angle adjustment function” and the “blade tip inclination angle adjustment function” described in the above (0008) are adjusted to optimize the angle of the blade. This is a grinding tool with a grinding angle holder that maintains the above.

The grinding tool has the following two features: 1. A blade angle adjusting function capable of maintaining a stable blade angle by three-point support of the blade in contact with both wheels (1) and the grinding wheel surface (B). And the function of rotating the blade support (3) in the circumferential direction to adjust the inclination angle of the blade edge, and it is possible to stably perform the blade grinding at both angles. In addition, when the handle of the blade that has been ground once is marked, or when the same blade is ground for a plurality of times, the same blade angle can be obtained by making the protrusion length the same. 2. By making the width of both wheels (1) wider than the width of the grindstone, the entire surface of the grindstone can be used by moving the cutting tool back and forth and right and left in the grinding operation. 3. When a rough grinding stone, a medium grinding stone, and a finishing grinding stone are sequentially used in the blade grinding, the finishing can be performed without re-adjusting the angle by making the grinding stone surfaces the same height.

<2> Flat blade grinding (see FIG. 7) After the blade angle adjustment described in <1> above, the blade support (3) is rotated in the circumferential direction to adjust the inclination angle of the back blade surface of the blade to a grinding stone. Grinding is performed by setting parallel to the surface (B).

<3> Grinding a sword (oblique blade) (see FIG. 8) After adjusting the blade angle shown in the above <1>, the blade support (3) is rotated in the circumferential direction, and the inclination angle of the back blade surface. Is adjusted to match the inclination angle of the cutting edge.

<< 4 >> Triangular blade (V-shape) (see FIG. 9) After adjusting the blade angle shown in the above <1>, the blade support (3) is rotated in the circumferential direction to form one of the V-shapes. After aligning the blade with the grindstone surface and grinding, rotate the blade support (3) in the circumferential direction again and align the other blade with the grindstone surface to grind the left and right blades at the same angle. it can.

<5> Sharpening of round sword (semi-round shape) (see FIG. 10) After adjusting the blade angle shown in the above <1>, loosen the pressing bolt (6) fixing the blade support (3). The tool support (3) with the mating portion between the tool rest (2) and the tool support (3) in an engaged state.
Grind while rolling left and right.

<< 6 >> Grinding of a plane blade and a wide chisel (see FIGS. 3 and 4) The blade support (3) shown in the above <1> is removed, and the tool rest (2) and the pressing plate (4) are removed. A wide flat blade is attached between them, and the blade angle is adjusted and fixed for grinding.

[0017]

EXAMPLE A prototype was produced and sharpened with a chisel, chisel, plane blade and the like. As a result, good results were obtained with various blades such as a blade angle and a cutting edge angle.

[0018]

As described above, many people have recently enjoyed sculpture and do-it-yourself as a hobby. However, in engraving and do-it-yourself work, grinding a knife is an essential task. However, for beginners, it is quite difficult to grind a well-cut knife. Since the present invention has a very simple structure as shown in FIGS. 1 and 2 and is easy to use, even a beginner can sharpen the blade at an appropriate angle. In addition, I think that it will be useful for professionals to improve efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view of an entire “grinding device with a grinding angle holder” when using a grinding stone for hand grinding.

FIG. 2 is a perspective view of the entire “grinding angle holder” provided with an attachment for attaching to a grinding machine body using power.

FIG. 3 is a plan view of a “grinding device with a grinding angle holder” showing a state in which a grinding stone for hand grinding is used.

FIG. 4 is an elevation view of a “grinding device with a grinding angle holder” showing a state in which a grinding stone for hand grinding is used.

FIG. 5 is a plan view of a “grinding device” showing a plane blade sharpening state in which a blade support is removed and a blade width is wide.

FIG. 6 is an elevation view of a “grinding device” showing a plane blade sharpening state in which a blade support is removed and a blade width is wide;

FIG. 7 is an elevational view of a grinding machine in which a disk-shaped grinding wheel rotates on a vertical axis using power and a grinding angle holder attached to a grinding machine in which a plane grinding wheel reciprocates.

FIG. 8 is an elevation view of a “grinding angle holder” showing a state where the grindstone is mounted on a grinding machine in which a round grindstone rotates on a horizontal axis using power.

FIG. 9 is a diagram showing a shape of a flat blade, a blade edge name, and a grinding method.

FIG. 10 is a view showing a shape of a cutting blade, a blade name, and a grinding method.

FIG. 11 is a diagram showing a shape of a triangular blade, a blade name, and a grinding method.

FIG. 12 is a diagram showing a shape of a round blade, a blade edge name, and a grinding method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wheel 2 tool rest 3 tool support 4 pressing plate 5 tool fixing bolt 6 pressing bolt 7 thrust ring 8 thrust receiver 9 tool rest support 10 fulcrum 11 attachment A on plane B grinding stone surface C tool

Claims (3)

[Claims] 1. A blade (C) attached to a wheel (1) that rolls on a flat plate (A) and a blade support (3) when performing blade sharpening using a whetstone for hand grinding. "Blade angle adjustment function" that can maintain a stable blade angle by three-point support of the grinding wheel surface (B) with which the blade is in contact, and "Tilting of the blade edge" by rotating the blade support (3) in the circumferential direction. A sharpening tool with a sharpening angle holder that has the function of adjusting the angle and maintains the optimum angle of the knife to perform sharpening. 2. The blade support (3) according to claim 1 is removed, and a flat blade such as a chisel / plane blade having a wide blade width is attached to the tool post (2), and the blade is directly fixed by a pressing plate (4). A sharpening tool with a sharpening angle holder for adjusting the angle. 3. In the case of performing blade sharpening using a known grinding machine that rotates or reciprocates with power,
Attachment (1) having a fulcrum (10) for attaching a grinding tool with a grinding angle holder of the present invention to a known grinding machine body.
A grinding tool with a grinding angle holder for grinding by the method of claim 1, wherein 1) is installed.