Sharpening stone flattener

Abstract

This invention provides a grinding wheel surface straightening device that facilitates flattening of the grinding wheel while it is stationary, by combining a heavy material with a diamond grinding wheel that has strong grinding power, thereby correcting distortion caused by surface wear during use. [Solution] The surface flattening tool 1 is a vertically elongated plate-shaped tool that is held in place and rubbed against the surface 3 of the grinding wheel 2, with a replaceable electroplated diamond grinding wheel 4 attached to the attachment surface 6 of the surface flattening tool body 5, and is equipped with a gripping part 7 and is made of aluminum alloy.

Description

Technical Field

[0001] The present invention relates to a surface straightener for correcting a grinding stone to a flat surface by rubbing it against a so-called grinding surface on the surface of the grinding stone.

Background Art

[0002] The surface of the grinding stone wears out by grinding a cutting tool, loses its flat surface, and becomes distorted. To correct this distorted state, in addition to rubbing the grinding stone on a relatively flat place such as a concrete block or wet-grinding by laying waterproof paper on a thick plate glass, there are only methods such as rubbing the grinding stone together with an abrasive such as emery powder or diamond powder placed on an iron plate-shaped surface straightener, or rubbing it against a diamond grinding stone.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the content of Patent Document 1 above, it is characterized in that the grinding stone is placed on the surface straightener and rubbed to perform surface straightening. Note that the accuracy regarding the flatness of the surface straightener is not defined.

[0006] In the product catalog of Sharpton in Non-Patent Document 1 above, the material is a nickel-plated bronze casting, and industrial diamond particles are electrodeposited. It is stated that re-electrodeposition by the manufacturer is possible for wear during use. This surface straightener is also characterized by being used in a stationary state.

[0007] Conventional whetstone flatteners are designed to be used by holding the whetstone in place and rubbing it against the flattener, but they do not take into account cases where the whetstone is larger than the flattener. Therefore, gripping a large grinding wheel and performing flattening not only puts a strain on the user's arm, but also increases the possibility of damage due to moving the grinding wheel.

[0008] The purpose of this invention is to provide a surface leveling device that reduces the strain on the user's arm. [Means for solving the problem]

[0009] The surface leveling tool comprises a surface leveling tool body and an electroplated diamond grinding wheel attached to the upper and / or lower surface of the surface leveling tool body, and is characterized by being a vertically elongated plate shape that corrects the surface to a flat surface by rubbing against the surface of the grinding wheel, and the material of the surface leveling tool body is an aluminum alloy. [Effects of the Invention]

[0010] This invention is a grinding wheel surface straightening tool that reduces the strain on the user's arm, prevents uneven wear by not applying excessive force to correct the grinding wheel surface, and allows for flattening of the surface. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view showing the state of use of the surface leveling device 1, which is an embodiment of the present invention. [Figure 2] This is a side view of a surface leveling device 1, which is an embodiment of the present invention. [Figure 3] This is a plan view of the surface leveling device 1, which is an embodiment of the present invention. [Figure 4] This is a plan view showing the main body 5 of the surface leveling device in Figure 3. [Figure 5] This is a cross-sectional view AA of the surface leveling device body 5 in Figure 4. [Figure 6] This is an enlarged view of the gripping part in Figure 4. [Figure 7] It is an enlarged view of the corner part in FIG. 4. [Figure 8] It is a diagram showing an embodiment of the prior art document.

Mode for Carrying Out the Invention

[0012] FIG. 1 is a perspective view showing the usage state of the planisher 1 which is an embodiment of the present invention, FIG. 2 is a side view of the planisher 1 in FIG. 1. FIG. 3 is a plan view of the planisher 1. FIG. 4 is a plan view of the planisher main body. FIG. 5 is a diagram showing the A-A cross section of the plan view in FIG. 4. FIG. 6 is an enlarged view of the right side surface of the cross section in FIG. 5. In addition, the vertical direction in FIG. 2 is taken as the longitudinal direction, the horizontal direction is taken as the thickness, the vertical direction in FIG. 3 is taken as the longitudinal direction, and the horizontal direction represents the width. The vertical direction in FIG. 4 represents the longitudinal direction, and the horizontal direction represents the width. FIG. 6 represents an enlarged view of the chamfer of the corner part of the planisher 5 constituting the planisher main body 1. FIG. 7 is an enlarged view of the upper side surface of the planisher. FIG. 8 is a diagram citing an embodiment of the prior art document.

[0013] Using FIGS. 1, FIG. 2, and FIG. 3, the planisher 1 and the grindstone 2 will be described. The planisher 1 is a planisher 1 that abuts against the grindstone surface 3 of the grindstone 2 and repeatedly performs a reciprocating motion to rub and correct the grindstone surface 3 into a flat surface. The planisher 1 is plate-shaped as shown in FIGS. 2 and FIG. 3 and has a vertically long shape. The grindstone 2 is a product that has been conventionally and generally distributed in the market and is made of artificial or natural rectangular processed stone.

[0014] As the grindstone 2 grinds the cutting tool, the grindstone surface 3 wears unevenly, and the flat surface is lost and distorted. When the grindstone 2 is used in this distorted state, not only does the flatness accuracy deteriorate, but it also affects the grinding result of the cutting tool so that its original performance cannot be exhibited. Therefore, in order to continuously maintain the flatness accuracy of the grindstone surface 3, the planisher 1 of the present invention is used for planishing even during the grinding process to correct the flatness.

[0015] The planisher 1 has a planisher main body 5 and an electrodeposited diamond grindstone 4 attached to the upper and lower surfaces of the planisher main body 5.

[0016] Since commercially available electroplated diamond grindstones 4 are attached to the upper and lower surfaces of the surface planer 1, the sizes of the upper and lower surfaces to which the electroplated diamond grindstones 4 are attached are sized to fit the size of the commercially available electroplated diamond grindstones 4. Therefore, the length in the vertical direction is 180 mm to 250 mm, and the width in the horizontal direction is 60 mm to 80 mm. Also, considering ease of handling, an arc-shaped depression with a radius of 10 mm and a depth of 2 mm was made on the plate side surface 9 in the longitudinal direction of the surface planer body 5 to provide a gripping portion 7. The conventional product is used in a state where the surface planer is placed stationary, and is not in a shape that can be gripped and used. The surface planer 1 of the present invention uses an aluminum alloy for the material of the surface planer body 5, and sets the plate thickness of the surface planer body 5 to 24 mm to 36 mm so as to have a predetermined weight. As a result, when the surface planer 1 is placed on the grindstone surface 3 and the reciprocating operation is repeated back and forth, the self-weight of the surface planer 1 is added, so the burden on the user's arm can be reduced.

[0017] The surface planer 1 is used by attaching commercially available electroplated diamond grindstones 4 to the upper and lower surfaces of the surface planer body 5 via the attached double-sided tape.

[0018] The flatness accuracy of the upper and lower surfaces (attachment surfaces 6) of the surface planer body 5 to which the commercially available electroplated diamond grindstones 4 are attached is important. The flatness accuracy was not defined for the conventional product, but based on the tolerance of the machining accuracy of surface grinding, the flatness of the attachment surface 6 was set within the range of 0.004 mm to 0.03 mm or less. In the present embodiment, the upper and lower surfaces of the surface planer body 5, which are the attachment surfaces 6 of the surface planer body 5, are processed so that the electroplated diamond grindstones 4 can be attached.

[0019] As another embodiment, the electroplated diamond grindstone 4 may be processed so as to be attached to either the upper surface or the lower surface of the surface planer body 5.

[0020] The grain size of the electroplated diamond grindstone 4 is selected according to the user's working form, and the form of use may be stationary use.

[0021] Figure 7 will be used to explain the corners 8 of the surface leveling device body 5. The electroplated diamond grinding wheel 4 wears down with use and needs to be replaced. Therefore, the corners 8 of the surface leveling device body 5 The outer dimensions L1 and the outer dimensions L3 of the electroplated diamond grinding wheel 4 are the same, and the surface leveling device body 5 By chamfering the corners 8, the dimension L2 obtained by subtracting the chamfer from the outer dimension L1 of the surface leveling tool body 5 is set to be shorter than L3. This makes it easier to insert a spatula or cutter blade and makes it easier to peel off the surface leveling tool body 5.

[0022] When sharpening blades, the whetstone 2 not only loses its flatness, but also becomes clogged with abrasive particles. Conventionally, in this case, sharpening was done using a small, rectangular whetstone called a nagura whetstone, but because the polishing area is small compared to the whetstone surface, it was not easy to correct the flatness. The surface straightening device 1 of this invention can correct the flatness of the whetstone and sharpen it simultaneously.

[0023] Next, Figure 8 will be used to explain a conventional whetstone flattening device 10. In conventional devices, the whetstone flattening device 10 is placed in position, the whetstone G is grasped, and the whetstone G is placed on the flattening device and rubbed to correct its flatness. In this case, if the whetstone G is larger than the flattening device, even just grasping the whetstone G puts a strain on the user's arm. This is because there is a risk of the user dropping and damaging the whetstone during the sharpening process using water, which increases the psychological burden.

[0024] In this invention, as shown in Figure 1, the flattening tool 1 is held and a reciprocating motion is applied to the surface of the grinding wheel 3, thereby correcting the flatness of the grinding wheel 2 using the weight of the flattening tool 1 and the grinding force of the replaceable electroplated diamond grinding wheel 4. The flatness can be confirmed by visually inspecting the surface of the grinding wheel 3 with a ruler, or by coloring the surface of the grinding wheel 3 with a colored pencil and rubbing it until the color marks disappear uniformly.

[0025] Conventional electroplated diamond grinding wheel flatteners state that if the grinding power of the flattener decreases with use, it is possible to have the electroplated diamond grinding wheel re-electroplated by the manufacturer. However, this method has the problem that the flattener cannot be used during the period when it is sent to the manufacturer for re-electroplating and returned. In the flattener 1 of this invention, an electroplated diamond grinding wheel 4 is used for the part used for flattening, so if the user has a new one on hand, replacement can be done immediately.

[0026] In this invention, assuming use in environments where water is used, an aluminum alloy that is resistant to rust and corrosion is used for the surface leveling device body 5.

[0027] The electroplated diamond grinding wheel 4 used in this invention is a commercially available product, which is a grinding wheel in which industrial diamond abrasive grains are electroplated onto a 1 mm thick iron plate that has been plated.

[0028] Let me explain the weight of the surface leveling device body 5. While a heavier surface leveling device body 5 would be more effective when operated back and forth by its own weight, the weight was designed with ergonomic research data (Human Life Engineering Research Center) in mind, which shows that the ideal weight for both men and women aged 20 to 80 is just over 1 kg, making it easy to hold with one hand. [Explanation of symbols]

[0029] 1. Surface leveling tool 2 whetstones 3. Grinding wheel surface 4. Electroplated diamond grinding wheel 5. Surface straightening device body 6. Adhesion surface 7 Gripping part 8. Corner section 9. Long side of the board G Sharpening Stone R correction surface S Abrasive 10. Sharpening stone flattener 11a Polished surface

Claims

1. The surface leveling device comprises a surface leveling device body and an electroplated diamond grinding wheel attached to the upper and / or lower surface of the surface leveling device body, and is a vertically elongated plate shape that corrects the surface to a flat surface by rubbing it against the surface of the grinding wheel, and the material of the surface leveling device body is an aluminum alloy.

2. The surface leveling device according to claim 1, wherein the plate thickness t of the surface leveling device body is 24 mm ≤ t ≤ 36 mm.

3. The surface leveling device according to claim 1, wherein the flatness accuracy of the upper and / or lower surface to which the electroplated diamond grinding wheel of the surface leveling device body is attached is 0.004 mm to 0.03 mm or less.

4. The surface leveling device according to claim 1 or 2, wherein the attachment surfaces of the surface leveling device body to which the electroplated diamond grinding wheel is attached are the upper surface and the lower surface of the surface leveling device body.

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