JP2019098109A - Vertical stacking blade edge member and its manufacturing method - Google Patents

Abstract

To provide a blade edge which is excellent in sharpness and can be simply sharpened.SOLUTION: Stainless plates have surfaces which are easily oxidized and, therefore, it is quite difficult that the plates are stacked and welded to each other. The stainless plates are once welded in a flatly-stacked state and, thereby, welded material is manufactured. Subsequently, the stacked material is cut into rod shapes and is rearranged. Thereby, vertically stacked base material is prepared, from the base material, a piece to get to a blade edge is cut out by laser, water jet cutter or the like, and the piece is set as a blade edge member and is adhered to the tip of a blade. The blade edge is thus formed and, thereby, the blade edge which becomes saw-tooth shaped upon sharpening is completed.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a method of making a sharp knife.

Metal plates are stacked, forged, welded, deformed and polished, and there is a type of blade which has a wood grain pattern on the surface of the blade. In some cases, there is no core at the center of the blade, and the laminated cross section is the cutting edge.

The following patent documents can be mentioned as a well-known technique regarding this invention.
Japanese Patent Application No. 2012-39453 Japanese Patent Application H63-92377 Japanese Patent Application No. 2017-008319

It is well known that a blade with a cutting edge called "Damascus" is generally used, with a grain pattern on the surface of the blade.

However, many of the resulting cutting edges are often provided with a hard cutting edge and a core at the central cutting edge. Some of them have damascus patterns reaching the cutting edge, but some of the cutting edges are parallel to the longitudinal direction of the cutting tool, and they do not have a sufficiently sawtooth-shaped cutting edge.

The direction in which the AB direction in FIG. A direction in which E-F is pushed out, a pushing blade direction.

Two figures shown in FIG. 2 are the G part of the general cutter shown in FIG. 1, ie, the elements on larger scale of a blade edge part.
The shaded area is a hard area, and the light color area is a soft area. The soft part is sandblasted or sharpened, worn out by chemicals and dented, and the hard part protrudes into a blade.

Here, the left figure H is a simple horizontal laminated cutting edge. Although it is sharpened to a single blade, it is effective to cut only the deepest part of the deepest sheet, the cutting edge part 6.
It can be seen that the stacked blades are substantially parallel to the longitudinal direction A-B of the blades. This is not suitable for cutting fibers.
Effective for cutting the fibers is I, in which the blade is split in the direction AB to form a sawtooth.

The state in which the plate materials are horizontally stacked and flatly stacked with the largest area of the metal plate above is referred to as horizontal lamination here.
The upper figure in FIG. 3 is that, and a common Damascus cutlery is made from this cross-laminate.

Here, various Damascus patterns can be made by corrugating a part of the lateral lamination and grinding the surface. In the lower part of Fig. 3, it will be a striped pattern. At this time, since the hard portion is corrugated, a portion to be a blade is secured, but it is not sufficient yet.

The present invention proposes a method for producing a more precise sawtooth of the cutting edge.

  In the present invention, a fine sawtooth is formed on the cutting edge by changing the material of the cutter from horizontal lamination, which is lamination in parallel to the pulling blade direction, to vertical lamination, in which the lamination intersects with the pulling blade direction. To solve the problem.

Here, specifically explaining the difference between horizontal lamination and vertical lamination,
When metal plates are stacked in a stack, assuming that the top plate is called the top and the bottom plate is called the ground, in the horizontal lamination, both N faces in FIG. 1 are the top or the ground. The stacking height in the lateral lamination changes depending on the degree of forging, but in actual use, the width of the blade is several millimeters.
On the other hand, in vertical stacking, it can be said that L and M in FIG. 1 are stacked. L is the tip of the blade and M is the root of the blade. The stacking height is the length of the blade, which is 150 mm to 200 mm for a kitchen knife.
FIG. 4 shows a diagram of horizontal lamination, a diagram of vertical lamination, and a diagram of vertical lamination.

In the present invention, a blade of vertical lamination is targeted, not horizontal lamination.

The cutting edge made by this manufacturing method is lined with an orderly serrated cutting edge, is easy to sharpen, and has the effect of being able to immediately obtain the best cutting quality.

Sketch of knife or knife The enlarged view of G part in Figure 1 A place where the horizontal laminated material and the horizontal laminated material are bent in a zigzag and the upper and lower sides are cut into a flat surface A sketch of a horizontally stacked board and a vertically stacked board Where two or more elongated strip materials are stacked to make a vertical laminate Cutting the finished vertical laminated material into a strip to make a cutting edge member Attaching a band-shaped cutting edge member that is vertically stacked to the tip of the cutter A sketch of the blade attached with the edge of the vertical stack How to make a vertical laminate with a blade wear height b or edge width c from a block of vertical laminate and how to make a vertical laminate with height a wear height b or edge width c Where multiple base materials with high wear are bundled, sandwiching the adhesion prevention plate between them, and bonding the plate materials to make the base material of the vertically laminated cutting edge member A method of shaping a vertically laminated material into a base material by cutting, rotating, or changing the angle of a material which has been horizontally laminated in advance into a bar shape Horizontal laminated material is cut obliquely and reassembled into an angled vertical laminate The figure which cut the horizontal lamination material, changed it, and made it into different composition Fig. 2 in which the cross-laminated material is cut and reassembled into a different assembly

1 blade body a edge length b edge height wear width wear height c edge width A-B edge direction C-D edge width direction E-F edge direction G edge portion L edge edge M edge of blade N blade horizontal surface O blade peak P blade edge 2 core edge core 2 'vertical edge laminated blade edge 3 handle 4 edge edge portion of horizontal lamination edge edge portion of vertical lamination 6 hard tip of the edge of horizontal lamination edge Part 7 Horizontally laminated plate material 7 'Plate 7 ′ ′ cut out from horizontally laminated plate 7 ′ ′ Rotated and vertically laminated plate 8 Plated by horizontally laminated plate 9 Grinding line 10 Cutting line 11 Vertically laminated plate Raw material, base material 12 for cutting out cutting edge member Laying material of horizontal lamination 13 Cutting edge member of vertical lamination, wear height 14 Cutting edge member of vertical lamination, adhesion prevention plate sandwiched between blade width 15

The following description will be made based on the drawings.

Damascus style blades or horizontal layered blades are made by grinding and polishing the surface of a laminate of two or more different materials alternately laminated.

What is in the upper part of FIGS. 3 and 4 and 7 are the materials. Different materials are stacked in parallel. This state is called lateral lamination. It is a rectangular parallelepiped, that is, a hexahedron, the upper and lower flat plates are simple, and the surrounding four cross sections are horizontal stripes.
When the surface of 7 is made uneven to be 8 and then polished and made damascus, the upper and lower surfaces become like a pattern of grids. Since the unevenness is regular in FIG.

On the other hand, the largest surface, the upper and lower surfaces have a stripe pattern similar to that of wood squares, and two of the cross sections have vertical stripes, which is called the base material of the vertical lamination. Do.
When a plate-like base material is placed horizontally, the appearance of a stripe pattern on a large surface or upper and lower surfaces is the base material of vertical lamination.

In the drawing, the upper 7 in FIG. 4 is a horizontal lamination, and the lower 11 is a base material of the vertical lamination.
In the vertically stacked base material, the narrowest surface of the hexahedron, the flat surface of the heaven ground, and the stripe pattern of the largest surface, the direction of the sky and the ground is the direction of the cutting edge and the root of the blade . When the longitudinal direction AB of the blade is viewed sideways, stripes are visible in the longitudinal direction.

In the lateral lamination, the stripe pattern of the lamination becomes horizontal stripes when viewed from the longitudinal direction of the blade, and the blade and the stripe run in parallel. In the case of longitudinal lamination, the lamination is left and right, and when viewed from the longitudinal direction AB of the blade, it becomes vertical stripes, and the stripes run at a certain angle or at right angles to the blade.

In the case of longitudinal lamination, since the thick portion and the thin portion are alternately arranged on the largest surface, the strength of the hardness becomes a stripe pattern, and it becomes a metal lump having a kind of fiber-like property.

Until now, when making metal laminates, it was customary to stack plates with large flats in flat stacks to make a material of horizontal lamination.
Thus, it was always the case that the heavens and earth when stacked were on the side of the knife.

On the other hand, in Example 1 of the present invention, first, strip-shaped plates having at least two different properties are prepared. FIG.
Materials should be hard and soft. The width of the short side of the strip is b, which corresponds to b in FIG. 1, that is, the use height of the blade and the wear height.

These plates are stacked vertically. Vertical stacking means stacking and welding so that the position of the sky when making a flat stack is the cutting tip and the position of the ground hits the root of the blade.

The wear height, the height of the blade, and the size of b are sufficient at most about 10 mm to 20 mm for a kitchen knife or the like.
C is the thickness of the member at the cutting edge portion. Depending on the knife to be used, such as a knife, a knife, etc., the thickness of the cutting edge will generally be from 2 mm to at most 6 mm for a knife etc.

In the case of forging, bonding or bonding at one time, the width of the laminated surface in the case of stacking and bonding needs to be a size in the longitudinal direction a of the blade or slightly larger than a. This a corresponds to the length of the blade in a kitchen knife or knife and is usually about 15 cm to 20 cm.
Although the length of d is free, it is more efficient if it is longer to some extent.

At this time, it is possible to weld with a large one such as b multiplied by an integer and cut it later, but the cutting width needs to be equal to a or d, and although not technically impossible, it takes time for cutting. This is not optimal. It is more efficient to cut the thickness to at most 10 to 20 mm. See FIG.

For this reason, generally, the blade material bonded with a blade width of b or C width of the cutter is used as the base material 11 of the vertical laminate, and cut so as to cross the stripe pattern at the cutting line 10 It is easy to make slices.
b is the wear height of the blade, c is the width of the blade, and b is about 10 to 20 mm and c is about 2 to 3 mm in a general knife. A strip of width b is forged and laser cut with width c to make a slice of width c. See FIG.
At this time, when the cutting angle is a right angle, the hard part will be aligned just like a domino of a domino overturn.

Cutting is also possible with a diamond cutter, but a laser cutter would be easier. The relationship between the blade and heat is very delicate, and depending on the heat application, the sharpness of the blade changes greatly, so it is necessary to provide sufficient cooling so that it does not become hot.

At this time, when a water jet cutter is used, no thermal load is applied, so that the degree of freedom of heat treatment of the cutter can be secured, which is very advantageous.

By cutting the laminated material of the vertical layer in accordance with the cutting edge width c of the cutter, it is possible to cut out any number of cutting members of the vertical lamination. The left side of FIG. 7 is a vertically stacked cutting edge member.

The cutting edge member thus cut out is welded or adhered to the tip of the cutter.
FIG. 7 shows 2 ′ prior to bonding and the one after bonding, which was polished.
I of FIG. 2 is an enlarged view.
It can be seen that the cutting edge has a sawtooth shape in which hard and soft parts are lined up.
In addition, it is more preferable that the soft material is different and the color is different because the manner of reduction of the blade and the feature of the cutting edge are clearly visible.

In addition, when manufacturing a laminated material of this vertical lamination, prepare several blocks in which thin strip-like or strip-like materials with a wear width b or so are stacked, and press the plate from both sides as if sandwiching a plate between them. It is more efficient to do it. It is shown in FIG.

In Example 1, a strip-shaped material is welded, but here, a large-area plate is welded in advance to form a horizontally laminated plate 7 of a certain thickness, and then it is cut and longitudinally laminated Describe how to use the

Stainless steel is an easy-to-handle material that an oxide film is easily attached to the surface, and it is very difficult to weld the oxide film. Therefore, the oxide film on the surface is removed and welding is performed until a new oxide film is formed. As it is a difficult-to-handle material, it is easier to work if it is welded in a state of horizontal lamination with a large area board.

7 of FIG. 11 is the same material as 7 of FIG. 3 and FIG.
This is cut into several pieces with a width of about the height b of the blade. 7 'in the figure,
Next, the cut pieces are rotated by 90 degrees and rearranged. 7 ''.
By this, the board | plate material which was horizontal lamination until now becomes thickness of b, and becomes a form of vertical lamination.

Vertical lamination is a stack of multiple hard and soft metal plates, with the top at the top and the bottom at the ground,
Taking a kitchen knife as an example, one of them is the tip of the knife, that is, the tip of the knife, and one is the trailing end of the blade, that is, the way of stacking.
By welding them together again, one substantially similar to the vertically stacked base material 11 shown in FIGS. 5 and 6 can be obtained.

As shown in the lower part of FIG. 6, the vertically stacked cutting edge member slice 2 'can be cut out from the upper state by a laser or a water jet cutter.

Attaching the blade member 2 'to the blade edge is the same as in FIGS.

In addition, at this time, when cutting the material 7 of horizontal lamination, cut by giving an angle, rotate it, and reassemble, even if it is longitudinal lamination, cutting with different angles is performed, and those are rearranged An angled vertical laminated member is completed. See FIG.

Although FIG. 13 is also an example of the rearrangement, various rearrangement forms can be considered by mainly cutting out in a bar shape after making the horizontal lamination once. FIG. 14 is also an example of rearrangement.
In addition, although the width and thickness of the soft material that looks white are almost the same as those of the hard material represented by the hatched portion, changing this to increase the number of hard blade parts or vice versa It is possible.

A well-shaped cutting edge can be worn and worn away with a soft part by grinding with a grindstone or sandblasting and chemical treatment to create a cutting edge having a saw-like shape in the hard part.

This cutting edge is easy to resharpen, and the sharpness will be restored soon.

Summary

Once again,
As a method of using the laser cutter only once,
What is shown in claim 1 is
(1) A plurality of two or more metal plate materials having different properties such as hardness or chemical strength are prepared in a strip-like shape, and these are combined and stacked.
(2) When the plurality of hard and soft metal plates are stacked, when the top is the top and the bottom is the ground,
Taking a kitchen knife etc. as an example, if one of them is the tip of the blade, that is, the tip of the blade, and one is the rear end of the blade, that is, the stacking method that is the root is vertical stacking, A plurality of stacked hard and soft metal plates are bonded to each other by forging, welding or the like.
(3) Using the above-mentioned longitudinal lamination and molding and bonding as a base material, using a cutter such as a laser cutter or a water jet cutter from this base material, using the thickness width of the blade or the height of the blade as a guide,
(4) A cutting edge member is manufactured by making a slice at such an angle that a hard and soft material repeatedly appears at the tip of the blade.
(5) A method of manufacturing a sawtooth-shaped cutting edge member in which several layers of small-sized hard and soft blades are arranged from the cutting edge to the root of the blade by attaching the above-mentioned cutting edge member as it is or at least one blade tip position. .

What is shown in claim 2 is
(1) A plurality of two or more metal plates having different properties such as hardness or chemical strength are prepared in a flat plate shape, combined, stacked, stacked, and adhered to each other by a method such as forging, welding or welding.
(3) The bonded plate material is cut with a cutter such as a laser cutter or a water jet cutter to make a rod-like material.
(4) The rod-like materials are combined with each other by rotating them or changing their angle, and bonding them together again by means of forging, welding or the like to form a base material.
(5) From the base material, using a cutter such as a laser cutter or a water jet cutter, with the thickness width of the blade or the height of the blade as a guide,
(6) A cutting edge member is manufactured by making slices at such an angle that a hard and soft material repeatedly appears at the tip of the blade.
(7) A method of manufacturing a sawtooth-shaped cutting edge member in which several layers of small-sized hard and soft blades are arranged from the cutting edge to the root of the blade by attaching the above-mentioned cutting edge member as it is or at least one blade tip position. .

What is shown in claim 3 is
When a plurality of hard and soft metal plates are stacked alternately, the top is the top and the bottom is the ground. Taking a kitchen knife etc. as an example, one of them is the tip of the knife, that is, the tip of the knife. When one end is the rear end of the blade, that is, the rooting method is called vertical lamination, a plurality of hard and soft metal plates stacked by this vertical lamination are mutually bonded by a method such as forging or welding. A cutting tool characterized in that a cutting edge member cut out from a base material by a method of slicing with a laser cutter or a water jet cutter is used as a cutting edge.

What is shown in claim 4 is
In the blade edge made of laminated metal, when either of the laminated hard and soft metal plates is different in color, the wear height can be clearly seen, the blade life can be understood, and the blade property is A cutter made by the method of claims 1 and 2, characterized in that it has features that are clearly visible.
It is.

The cutting edge member made by this manufacturing method becomes a sawtooth-shaped cutting edge, the surrounding material becomes softer, it takes less time to sharpen, can be sharpened quickly, and it is possible to always make a sharp cutting blade There is a merit that can be done.

In this method, once the base material is made, there is an advantage that many identical saw-tooth-shaped cutting edges can be cut out simply by making slices.

Claims (4)

(1) A plurality of two or more metal plate materials having different properties such as hardness or chemical strength are prepared in a strip-like shape, and these are combined and stacked.
(2) When the plurality of hard and soft metal plates are stacked, when the top is the top and the bottom is the ground,
Taking a kitchen knife etc. as an example, if one of them is the tip of the blade, that is, the tip of the blade, and one is the rear end of the blade, that is, the stacking method that is the root is vertical stacking, A plurality of stacked hard and soft metal plates are bonded to each other by forging, welding or the like.
(3) Using the above-mentioned longitudinal lamination and molding and bonding as a base material, using a cutter such as a laser cutter or a water jet cutter from this base material, using the thickness width of the blade or the height of the blade as a guide,
(4) A cutting edge member is manufactured by making a slice at such an angle that a hard and soft material repeatedly appears at the tip of the blade.
(5) A method of manufacturing a sawtooth-shaped cutting edge member in which several layers of small-sized hard and soft blades are arranged from the cutting edge to the root of the blade by attaching the above-mentioned cutting edge member as it is or at least one blade tip position. . (1) A plurality of two or more metal plates having different properties such as hardness or chemical strength are prepared in a flat plate shape, combined, stacked, stacked, and adhered to each other by a method such as forging, welding or welding.
(3) The bonded plate material is cut with a cutter such as a laser cutter or a water jet cutter to make a rod-like material.
(4) The rod-like materials are combined with each other by rotating them or changing their angle, and bonding them together again by means of forging, welding or the like to form a base material.
(5) From the base material, using a cutter such as a laser cutter or a water jet cutter, with the thickness width of the blade or the height of the blade as a guide,
(6) A cutting edge member is manufactured by making slices at such an angle that a hard and soft material repeatedly appears at the tip of the blade.
(7) A method of manufacturing a sawtooth-shaped cutting edge member in which several layers of small-sized hard and soft blades are arranged from the cutting edge to the root of the blade by attaching the above-mentioned cutting edge member as it is or at least one blade tip position. . When a plurality of hard and soft metal plates are stacked alternately, the top is the top and the bottom is the ground. Taking a kitchen knife etc. as an example, one of them is the tip of the knife, that is, the tip of the knife. When one end is the rear end of the blade, that is, the rooting method is called vertical lamination, a plurality of hard and soft metal plates stacked by this vertical lamination are mutually bonded by a method such as forging or welding. A cutting tool characterized in that a cutting edge member cut out from a base material by a method of slicing with a laser cutter or a water jet cutter is used as a cutting edge. In the blade edge made of laminated metal, when either of the laminated hard and soft metal plates is different in color, the wear height can be clearly seen, the blade life can be understood, and the blade property is A cutter made by the method of claims 1 and 2, characterized in that it has features that are clearly visible.