JP2020048766A - Laminated edge member by alternating cut type development, and manufacturing method thereof - Google Patents

Abstract

To manufacture a sharp edge that can be sharpened immediately.SOLUTION: A laminate material is made by welding once a hard and soft material in flat pile. Then, the laminate material is cut in round slices, and cut in a direction across a cross section of the laminate, to thereby form an end face where the hard and soft material appears repeatedly. Otherwise, a non-cutting notch 11 is formed from both side faces of the cross section, and the notch is opened, to thereby obtain a long material of a vertical laminate in which a hard and soft metal appears repeatedly on the top of the blade.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a method for producing a sharp blade.

There are existing types of blades in which metal plates are stacked, forged, welded, deformed, and polished so that a wood-like pattern appears on the surface of the blade. Some blades do not have a core at the center of the blade and have a laminated cross section as the blade edge.

The following patent documents can be cited as known techniques relating to the present invention.
Japanese Patent Application No. 2012-39453 Japanese Patent Application H63-92377 Japanese Patent Application No. 2017-008319 Japanese Patent Application No. 2017-235865 Japanese Patent Application 2010-4749

An object of the present invention is to produce a cutting tool in which a metal plate has a laminated structure and a hard and soft material appears at a cutting edge.

In a metal lamination technique generally called a clad, a metal plate is stacked flat, heated to a high temperature, and welded and bonded by applying pressure from above. The upper diagram in FIG. 2 is that, a typical Damascus knife is made in this form.

In order for two or more materials having high or low hardness or resistance to pharmaceuticals to appear alternately, regularly, or randomly on the cutting edge of the blade, as shown in the diagram below the comparison diagram of FIG. 2, A structure in which hard, soft and weak metals are arranged in layers from the direction A to the direction B of the blade is preferred.
Such a shape is referred to as a vertical lamination.

Now, with the current technology, it is said that the maximum thickness that can be manufactured by lamination is about 20 to 30 mm.
In order to make the horizontal lamination having a thickness of about 30 mm into a vertical lamination, a method of cutting the lamination once, reassembling them, and welding them may be considered.
However, it has been found that welding a thin rod-shaped metal plate is very difficult and extremely difficult to manufacture.
However, it was also found that there is a method of switching to a vertically laminated plate by cutting the horizontally laminated plate several times.

  In the present invention, after cutting a horizontally laminated plate, a single or a plurality of cuts are made, and the cut is widened and expanded to produce a long vertically laminated blade member, and a powdery material is fired. A method of manufacturing a layered blade member by tying the blade member will be described.

Kitchen knife or knife sketch Horizontal laminated material: Top and vertical laminated material: Bottom sketch A cross-section of a horizontally laminated material: a top and a cross-section cut line inserted in the cross-section: medium, transversely cut, vertically laminated cutting edge member: a sketch comparing the bottom Cross-section of horizontal laminated material: Theoretical diagram of a cut line that is not cut and is not cut, but crosses the laminate on the top and the one with a circular slice: Medium, laminated on a circular slice Figure with a non-cut score line across the bottom: Horizontally laminated board: Top, with non-cutting cuts in it: Inside, a sketch comparing a part of it unfolded A comparison diagram showing the flow of unfolding the uncut notch, expanding the unfolded one into a line and a band A sketch of a part of a non-cut notch in a horizontal layered material Uncut cuts are made in a horizontally laminated board and opened. Figure showing a non-cutting cut line in the direction of the horizontal stacking in a long horizontal laminated board: top and figure with open non-cutting notch: bottom Horizontally laminated plate: Top, top view of spiral cut, which is another example of non-cut cut, middle: Front view of spiral cut: bottom

Reference Signs List 1 blade body a blade length b blade height Wear width wear height c blade width AB Cutting direction 2 Blade member 3 Pattern 4 Horizontally laminated plate 4 'Cutting Cutting line 5 Vertically laminated Plate 6 A member cut and cut from the horizontal stack: Top 7 A diagram in which cut and cut lines traversing the layers of the horizontal stack are arranged on the cut and cut members: Medium 8 Cut and cut across the layers of the material of the horizontal stack Vertically laminated cutting edge member 9 Theoretical non-cutting cut line 9 'Practical example of non-cutting cut line
10 Horizontally laminated material with non-cut notches along non-cut notch lines
11 Part of non-cut notch
11 'Unfolded part of uncut notch, vertically stacked band
11 '', 11 '''
11 '''' unfolded and pressed vertically laminated strip
12 Horizontally laminated boards
13 Non-cutting cut lines in horizontal laminated boards
13 'Open figure, with some uncut cuts
14 Open figure with non-cutting cuts in the horizontal stack
14 'Horizontally laminated strip, pressed and flattened
15 Another example of non-cutting notches alternately inserted with horizontal layered material, spiral type notches

Hereinafter, description will be made based on the drawings.

In the present invention, it is considered that a vertically laminated band is formed from a horizontally laminated plate.

First, the horizontally laminated plate of FIG. 2 is cut into slices at, for example, a position 4 '.
The cutting method does not matter, but it may be a thread saw, a band saw, a wire cutter, a diamond cutter, a laser, or a water jet cutter.
The cut one corresponds to the upper one in the comparative view of FIG. This remains a horizontal stack.

However, when a cut like 7 shown in FIG. 3 is performed, a slice or cut piece 8 is formed in a manner to be orthogonal to or across the layers of the horizontal lamination.
The height of the fragments corresponds to the wear height of the blade in FIG. 1b, and the thickness corresponds to the thickness c of the blade.

Assuming that the thickness of the first horizontal lamination is 30 mm, a piece with a length of about 40 mm is formed when cut at an angle of 45 degrees.

The thickness can be cut slightly larger than the thickness of the blade, that is, C in FIG. 1, and then sharpened and attached to the tip of the blade.

By attaching one or more of these to the cutting edge of the blade, the blade can be made.

However, since the blade member is slightly smaller in size, it is necessary to attach two or more blade members in order to obtain a normal knife size.

It is not impossible to superimpose the blade members once formed in a plate shape and weld and bond them together. In addition, it is not impossible to attach with argon welding or silver wax.
However, the above processing is troublesome, and may cause problems such as whether the connecting portion can be beautifully formed and whether the arrangement of hard and soft cutting edges is beautiful, but this is not impossible.

According to the present invention, in the process of changing from generally existing horizontal lamination to vertical lamination, instead of cutting, a cut is made to the middle of the lamination, and non-cutting such as turning back one skin is left. Consider deployment by the method of cutting and cutting.
Here, the middle and lower views of FIG. 4 show that a plurality of non-cutting cuts are made alternately halfway in the horizontally laminated member.

In the drawing in FIG. 5, a non-cut notch is made.
In the figure below, a view in which a part of the non-cut notch is developed is shown.
Thus, in the lower diagram of FIG. 5, it can be seen that by opening the non-cut notches, it is possible to obtain a long vertically laminated band without any breaks.

As can be seen from the figure, the bends are greatly curved and bent, so it will be necessary to open them in a sufficiently heated state.
FIG. 6 shows that the non-cut notches are developed to form a single band.
Since the bending point that becomes a fold tends to be uneven, it requires some grinding, hot pressing, and forging processes to smooth it out, but if it is flat, long vertical lamination Obi 11 '''' is completed.

In this manner, a vertically laminated band corresponding to several times the length of the cut can be cut out from the non-cut notches and unfolding from the horizontally laminated blocks.

Here, a method of manufacturing a long horizontally laminated band by notching the material but not cutting the material from the horizontally laminated plates joined in a flat stack, will be described.

FIG. 7 shows a horizontally laminated plate joined by flat stacking. In this plate, for example, a non-cut notch having a width slightly larger than the wear height b of the blade is cut in one direction, and the cut is opened.
The line 12 is a measure of non-cutting cuts from both directions.

FIG. 8 shows that 14 can be formed by opening the cut in a heated state.
This is further stretched, hot pressed, and slightly worked to produce a long, flat, horizontally laminated plate of 14 '.

This long strip of horizontal lamination can be treated in the same manner as the fragment of the horizontal lamination previously cut in FIGS. 4 and 5 and in Example 2 of paragraphs 20 to 23.

Specifically, it is a horizontal lamination, but a vertical lamination strip having a cross section that crosses the layer is formed by a method such as making a cut at an angle for cutting the cross section of the horizontal lamination.

As a result, it is possible to form a long band of vertical lamination, such as 11 ″ ″ in FIG. 6, and from this band, it is possible to cut out a blade member having a free length.
FIG. 9 shows a state in which a long horizontal laminated plate is created from a flat laminated horizontal laminated plate by non-cutting cutting.

In the case of ordinary kitchen knives, the size of b is about 7 mm to 10 mm, the thickness of c is about 2 mm at the maximum, and when making a razor, etc., c is 0.2 mm, and cutters etc. are thin like 0.4 mm, so roll You can also.

FIG. 10 shows a horizontal laminated board: a top and a spiral type cut similar to a mosquito coil, in which:
Front view of spiral cut line: As shown below, it is delicate whether this spiral type is included in the non-cut slit line, but it is actually non-cut except for both ends, and is long. It is possible to make a vertical laminated board of a length.

Looking at the cross section of the vertically laminated plate described so far, there is a difference in the way different layers are formed, and until now, the layers were almost the same angle except at the turning point, but this spiral type The angle of the cut along the cut line varies in various ways.

When manufacturing sintered alloys such as high-speed steel, it is not limited to laminating metal plates and shaping them. By cutting out, it is also possible to form a cutting edge that makes a difference in hardness and softness between the cutting edges.

A sintered material having a hard and soft layer can be obtained by a method in which a sintered material made of a powder is preliminarily compressed and shaped into a plate shape, and two or more thin plates are stacked and heated by compression.

The blade member made by this manufacturing method becomes a saw-tooth-shaped blade, the periphery of the hard part becomes a softer material, it takes less time to sharpen, it can be sharpened immediately, and it always has a sharp knife There is a merit that can be.

When manufactured by the methods of Embodiments 2 and 3, an elongated vertically laminated metal plate can be formed and can be applied to various uses.

Here, once again,
Claim 1
(1) Prepare a laminated metal plate made by stacking and welding and bonding metal materials that are hard and soft, or chemical strength is weak,
(2) cutting the laminated metal plate into slices,
(3) Cut across the layer on the cut surface, cut out the plate material,
(4) Shape the plate material so that hard and soft metal appears repeatedly at the cutting edge,
(5) A manufacturing method in which the plate material is used as a blade member to shape a blade and a tool.

Claim 2
(1) Prepare a laminated metal plate made by stacking and welding and bonding metal materials that are hard and soft, or chemical strength is weak,
(2) cutting the laminated metal plate into slices,
(3) A non-cutting cut or a spiral cut is made from a staggered position on both side surfaces of the cut laminated metal plate,
(4) By opening the notch, a laminated plate member integrally connected is manufactured.
(5) Shaped so that hard and soft metal repeatedly appears on the blade edge of the plate,
(6) A manufacturing method in which a part of the laminated plate member is used as a blade edge member to shape a blade and a tool.

Claim 3
(1) Prepare a laminated metal plate made by stacking and welding and bonding metal materials that are hard and soft, or chemical strength is weak,
(2) Non-cutting cuts or spiral cuts are made from alternate positions on both sides of the laminated metal plate,
(4) By opening the notch, a laminated plate member integrally connected is manufactured.
(5) Shaped so that hard and soft metal repeatedly appears on the blade edge of the plate,
(6) A manufacturing method in which a part of the laminated plate member is used as a blade edge member to shape a blade and a tool.

Claim 4
A cutting edge member, a cutting tool, or a tool manufactured by the manufacturing method according to claim 1 or 2 and shaped so that hard and soft metal repeatedly appears on the cutting edge.

Claims (4)

(1) Prepare a laminated metal plate made by stacking and welding and bonding metal materials that are hard and soft, or chemical strength is weak,
(2) cutting the laminated metal plate into slices,
(3) Cut across the layer on the cut surface, cut out the plate material,
(4) Shape the plate material so that hard and soft metal appears repeatedly at the cutting edge,
(5) A manufacturing method in which the plate material is used as a blade member to shape a blade and a tool.
(1) Prepare a laminated metal plate made by stacking and welding and bonding metal materials that are hard and soft, or chemical strength is weak,
(2) cutting the laminated metal plate into slices,
(3) A non-cutting cut or a spiral cut is made from a staggered position on both side surfaces of the cut laminated metal plate,
(4) By opening the notch, a laminated plate member integrally connected is manufactured.
(5) Shaped so that hard and soft metal repeatedly appears on the blade edge of the plate,
(6) A manufacturing method in which a part of the laminated plate member is used as a blade edge member to shape a blade and a tool.
(1) Prepare a laminated metal plate made by stacking and welding and bonding metal materials that are hard and soft, or chemical strength is weak,
(2) Non-cutting cuts or spiral cuts are made from alternate positions on both sides of the laminated metal plate,
(4) By opening the notch, a laminated plate member integrally connected is manufactured.
(5) Shaped so that hard and soft metal repeatedly appears on the blade edge of the plate,
(6) A manufacturing method in which a part of the laminated plate member is used as a blade edge member to shape a blade and a tool.
A cutting edge member, a cutting tool, or a tool manufactured by the manufacturing method according to claim 1 or 2 and shaped such that hard and soft metal repeatedly appears on the cutting edge.