JPS5871051A - Edge sharpening method and device of edge tool - Google Patents

Abstract

PURPOSE:To easily and correctly sharpen an edge, by using two sheets of retainer metals having the leading edge part formed in aligning to an edge curve of an edged tool. CONSTITUTION:An edged tool 1 is held by retainer metals 3, and its edge part is protruded by a screw 5. This edge tool 1 is fixed by supporting fixtures 6, 7, and sharpened by a grindstone 8. Here to easily apply averaged force, reinforced units 4 are additionally attached to leading edge parts of the retainer metals 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Up until now, the cutting edge of kitchen knives, knives, and other edged tools has been polished (sharpened) exclusively by free manual labor using a "grinding stone."

So, what is the cross section of the knife edge (1i) Km?
Microbevel (microscopic cutting edge) to several minutes C to several tens of minutes D depending on the blade (II cross section)
-i') It was very difficult to form a fist of about 1000 meters, and the Ruri high [0 technique was used as a membership fee.

-Originally, cutlery is made of heavy snowfall materials (including heat treatment, hardness, stickiness, dense texture, etc.) and polishing (promoting the blade attachment), not to mention Japanese swords as an example. You can compare the sharpness of the blade CjL.If you look closely at the edge of a Japanese sword, you can see a uniform micro-bevel that resembles a thin thread.There is nothing in the shadow of the master swordsmith O. Of course, there were many sharpeners who were lucky to have hair.

In addition, it takes a carpenter several years to master the sharpening skills of a carpenter, such as ``Ganna'' and ``Chise''. ” is said. (Due to the structure of the hand C111 section O, it does not move in a plane on the surface of the "grinding stone" and tends to move in a plane.) Free 〇 It is very difficult to make accurate "blade 1" by hand.

However, even a housewife living in a private garden, not only a professional cook, can produce good taste by using a sharp knife to obtain a flat and smooth cross section without using too much material. Even if you know this, sharpening your knives is the most important thing.

According to a chef, ``The side of the knife should be polished every day by applying a polishing agent to the side of the daikon tail sliced into rounds (to remove rust, and it is desirable to sharpen the cutting edge at least once every week). However, polishing the edge of the blade requires skill, and it is difficult to send it to a sharpener.

Therefore, the present inventor completed the present invention as a result of design experiments in November.

To briefly describe the present invention, two "patterns" having front edges having exactly the same curve as the cutting edge line, which are formed in advance to match the cutting edge curve of the cutting tool, are used to sandwich both sides of the cutting tool, and the vJ With the edge of the knife exactly parallel to the edge of the knife, leave only the part of the knife to be polished exposed, and use an oar abrasive.
Fix it diagonally so that it is horizontal (move the "grinding stone" horizontally to form a micro-bevel accurately on the cutting edge of the knife), and straddle the knife edge and the front edge of the "pattern". This is a method of grinding by pounding the whetstone and applying even force.

More specifically, for example, FIGS. 1 and 2 of the drawings
As shown in the figure, a knife (J (3)) (a single steel plate is bent and the back is rounded into a cylindrical shape, so that it has elasticity like a spring and has the effect of holding down the knife). 1)
Insert it, adjust it with the male screw (5), expose only the part to be polished, set it as shown in Figure 2, and then attach the support bracket (6).
) After fixing in (7), "Whetstone" - (8) (If you glue the wooden piece (9) with a synthetic rubber adhesive in advance, it will be easier to grind, and the island will be evenly applied. The front edge S of the "button" (the tip is easy to wear out, so we attached and molded it with Kuho-Ko 5 (4) made from shore abrasion-resistant material). Place it across the knife edge of the knife (1) and the knife (1),
Hold the blade lightly and polish it gradually and evenly over the entire length of the blade (without applying too much force). this! The thing is, to form a micro bevel (within 30 degrees), remove the burr on the cutting edge (even if the blade angle is as large as 20 degrees, it will still create a burr), and remove 9 9 points from the cutting edge with 1 ml! Since it is a rounding to sharpen the I (knife edge), instead of polishing one side one after another, after polishing one side several times, turn it over and polish the other side several times, then turn it again and polish the other side. Polishing is repeated several times.

9. ``Whetstone'' is not a natural ``finishing whetstone'', but rather a ``hewei water whetstone'' (for example, 1st work hiro) 5oon to 5oo whetstone.
Items with o number ~ finer items, the higher the number of the tabs, the sharper the finish ~) are made of denser material.
Moreover, it is homogeneous and chemical polishing is also performed, which is good. If the edge of the blade is chipped or severely scratched, use an oil polisher (for example, a piece of wood glued to Kumajirushi India/Medium manufactured by Two-Tone Inc. in the United States, and a rag soaked in relatively high viscosity oil such as sesame oil). All you have to do is warm up the "grinding stone" and apply it with the "abrasive surface" facing down, allowing the oil to soak in sufficiently through capillary action. Also, before use, wipe the "grinding surface" with a dry cloth. After shaping the cutting edge (within 20 degrees) with oil oozing out from inside the whetstone, you don't have to get your hands dirty. Finish with ``mizuto''.

(Lightly touch the pad of your finger to the edge of the knife to check if it is sharp enough.) Also, single-edged knives such as Deba knives are classified as "Oso" and "Agricultural use" as shown in Figure S. ” with the front and back side shifted.

If you look at the finished cutting edge under magnification, it should have an ``umbrella-shaped'' micro-bevel with sides of equal length from both sides, as shown in Figure 4.

Since polishing is performed while inverting, it is more efficient to use a support ' as shown in Figure S and to polish while fixing the back part (cylindrical part) of the "pattern" with a fixture as shown in Figure 8.

In addition, to give another example, as shown in Fig. 6, a kitchen knife (1
) is made into a magnet with the "pattern" (3), and sandwich both sides with nine pieces (make sure to have polarity so that both sides of the knife are aligned).
Adjust with the male screw (5) so that the knife edge and the front edge of the [button] O are exactly parallel as shown in Figure 1, and then attach the support tool (6).
The blade is fixed to the fixed part Ql and the cutting edge is polished. In addition, as shown in Fig. 7, the fixed part α1 of the support (6) is made independent and set as Oj,
By providing a hinge on the bottom member and making it reversible, polishing can be done more efficiently.

Even if a housewife owns many kinds of expensive knives, there is no point in having a variety of expensive knives if she does not take good care of their cutting edges. It's cheaper and cheaper to use it. We live in an era where even barbers' razors are disposable. In this day and age, rather than using high-grade and expensive knives, we use inexpensive knives made of carbon steel that has been impregnated with some chromium, carbon steel, and has some hardness and stickiness, and is generously polished. Probably not.

The present invention can be applied not only to kitchen knives, but also to knives, leather cutting knives, and other cutlery in general, and can easily form accurate, uniform, sharp, micro-bevels to improve sharpness. The effect is tremendous because it does not involve mt*.

[Brief explanation of drawings]

Figure 1 is a plan view of the knife with the "button" on the knife.
The figure is a cross-sectional view of a single-edged knife, such as a Deba knife, set on the "guard" [Enlarged diagram 5 showing the micro-bevel of F'ip Saiga in Section 4]
Figure 6 is a cross-sectional view of a support that allows the "patch" in Figure 2 to be reversed! Ii! ! Figure 187 shows the side view of the knife and the 8-petrified "guard" set and fixed on the support. Figure 187 shows the "guard" holding part Q (I is held independently from the support part (6) in Figure 16). In order to support the B-B part of the 18th doctor F'i 1st doctor in a reversible manner, the holding part of the "pattern" is provided with wI number (6) in the part corresponding to parts α3 and #;4ECαX to be reversible. Fixtures (1) Knife (2) Knife handle (3) "Guard" (4)
``Front edge reinforcement part made of a material with high wear resistance O attached to the backing j front 111! (5) Oshin/r6) Support tool for polishing (74 is a holding metal fitting of the 1st group of 6) (8) “Whetstone J (
9) Holding part for fixing the book to the support with the wooden piece GO knife glued to the "r whetstone" and the "pattern" (b) Bottom of the holding part 1Ω (2) Hinge 03r pad "holding part 10
Fig. 6 (37 Magnetized "dead metal" Patent issued - Hitogatsuma executive on page 2) Contents, 2 unchanged) Fig. S Director General of the Patent Office 1, Incident Indication of 1981 Patent Application No. 170484 2, title of invention Layered porcelain cutting edge i! F Kempo and Seven Devices 3, corrector F, M date of official order @105? February 4th &
@Correct subject specification and drawings (no change in content)

Claims (1)

[Scope of Claims] 1. In advance, form exactly the same line on the leading edge part in line with the cutting edge line including the straight part of the knife IIO, and use the friend "Todorottekin" to form the leading edge of "Todorottekin". ll0g1ll wire and cutting edge! 1III
Fix it so that I is exactly parallel, and align the "grinding stone" with the cutting edge.
A method for polishing the cutting edge of cutlery, which is characterized by obtaining a uniform and sharp mitaro bevel over the entire length of the knife edge by polishing the leading edge of the knife and the leading edge of the blade. 2. As shown in Figures 1 and 2 of the drawings, the cutting edge of a knife is molded with a 1-piece on the front edge, which is exactly the same as the mat, the front part is reinforced with a highly wear-resistant material, and the back part is equipped with a cylindrical shape. A "stopper" with a spring part, a reversible holding part as shown in Fig. 5 and Fig.
A device for polishing the cutting edge of cutlery consisting of a support. S As shown in Figure 5 O, the front edge of the knife is the same as the cutting edge curve.
i! 1IiI, reinforced with a highly wear-resistant material, and has nine front edge protection parts.The blade edge curve and the leading edge of the "button" can be sandwiched between the cutlery! lIIm! This device sharpens the edge of a blade document by fixing the blades so that they are exactly parallel, and applying a grindstone across the front edge of the blade and the front edge of the guard. 4 As shown in Figure 6 and Figure 7, the front edge should have a line that is exactly the same as the cutting edge line of the knife, and this area should be reinforced with a wear-resistant material (see Figure 1), and an adjustment screw on the back. A device consisting of a magnetized "button" that has a polarity so that the knife can be sandwiched between both sides and a holding part for the "button" that can be freely reversible is used to connect the blade tip to the "button". This device sharpens the cutting edge of cutlery by fixing the front edge of the blade so that the line is exactly parallel and applying a whetstone across the leading edge of the blade and the leading edge of the guard.