JPH04105818A - Belt like cutter - Google Patents

Abstract

PURPOSE:To impart a sufficient flexibility in the diameter direction, despite the width in the diameter direction as for a lamination belt being large, by making each belt body composing the lamination belt telescopic individually respectively among each joint point provided at intervals. CONSTITUTION:A lamination belt 2 whose width in the diameter direction is larger than the width in the radial direction is composed with endless belt bodies 2A-2C made of metal in plural pieces having flexibility being concentrically laminated. A lot of cutting edges (grindstone segment) 4 are provided then at intervals in the longitudinal direction on the outer peripheral face of the belt body 2C of the most outer periphery, after joining the abutment faces of each mutual belt bodies 2A-2C at numerous points at intervals in the longitudinal direction, and a desired belt like cutter 1 is made.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a heddle-shaped cutter for cutting large work materials such as stone, water, metal, plastic deck, glass, ceramic, etc. .

"Conventional technology" For example, when cutting large stones, conventional techniques generally
Cutting blades, Pantone, wire saws, etc. are commonly used.

The cutting blade is made by fixing abrasive layer chips in which diamond abrasive grains are fixed with metal pounds etc. at equal intervals on the outer periphery of a disc-shaped base metal obtained by rolling process. 〃φ and base metal thickness of 10uu are manufactured. With these dimensions, the maximum thickness that can be cut is 1
．． The cutting distance is about 15i1R.

On the other hand, the above-mentioned band saw is made by welding a wide strip-shaped thin metal plate with a thickness of about 1 to 6 ypm into an endless shape, and fixing abrasive layer depths at equal intervals on the negative side edge, and the axes are arranged parallel to each other. It is wound between a pair of cylindrical rotating bodies that are rotated at high speed, and the stone or the like is cut by one edge of the parallel portion between these rotating bodies.

The wire saw is an endless type in which cylindrical diamond abrasive layer depths are coaxially fixed at equal intervals to a stranded wire with a diameter of about RM = I Omm, and the wire is directly wound around the workpiece. The work material is cut by rotating the machine and running it at high speed while applying a constant tension using the drive device.

[Problems to be Solved by the Invention] However, all of the above cutting means have the following problems.

First, as the diameter of the cutting blade increases, the thickness of the alloy inevitably increases due to demands for strength, and the thickness of the abrasive layer depth also increases accordingly. For this reason, the cutting allowance becomes large, which deteriorates the yield of the work material, and the cutting resistance increases, causing run-out of the cutting edge, resulting in a reduction in cutting accuracy. Furthermore, since it is extremely difficult to manufacture an alloy with a diameter exceeding 3511 mm, there is a limit to the thickness of the work material that can be cut as described above. Furthermore, such a large-sized cutting blade is extremely inconvenient to transport and handle, and also has the drawback that it generates tremendous noise due to vibrations during cutting.

On the other hand, with a band saw, the thickness of the alloy is small even if the length is long, and the cutting allowance is relatively small at about 4 to 8 ytun, and the yield is good. Since cutting is performed by moving these rotating bodies in the axial direction, the cutting device has to be large in size and a large installation space is required.

Furthermore, when a band saw cracks at one location during cutting, the crack immediately spreads in the width direction and leads to breakage, which poses a danger to workers.

Wire saws use a large diameter abrasive layer tip, so the cutting allowance is larger than that of cutting blades or band saws, and the wire saw itself does not have the ability to regulate the cutting direction, so it is less effective than other cutting methods. The flatness and surface roughness of the cut surface are poor. Furthermore, during cutting, a large bending stress is applied to the wire at both ends of the abrasive layer tip, which shortens the lifespan leading to tip breakage or wire breakage.Furthermore, if the wire breaks, the end of the wire jumps like a whip, which is extremely dangerous. was.

"Means for Solving the Problems" The present invention has been made to solve the above problems, and consists of concentrically stacking a plurality of flexible metal endless belt bodies to achieve a width in the axial direction. A laminated belt having a radial width larger than that of It is characterized by having a large number of cutting blades spaced apart.

Note that the cutting width of the cutting blade may be larger than the axial width of the laminated belt.

Further, as the cutting blade, an abrasive layer chip or a cutting blade can be used.

In addition, the cutting blade has a metal support part at the base end, and both ends of this support part in the longitudinal direction of the belt are welded to the outer circumferential surface of the outermost heald body, and the part between both ends of the support part is The portion may have a gap between it and the outermost belt body.

``Function'' In this belt-shaped cutter, each belt body constituting the laminated belt can be expanded and contracted separately between joint points provided at intervals, so that the radial direction of the laminated belt is Despite the large width, sufficient flexibility can be achieved in the radial direction. Therefore, internal loss when rotating and traveling this belt-shaped cutter is small, and the driving force required for rotation may be small.

In addition, laminated belts can ensure a large width in the radial direction compared to the wall thickness, so it is easy to obtain extremely high tensile strength, which makes it possible to increase the cutting load and increase the cutting speed. Yes, because the wall thickness is small compared to the tensile strength,
The cutting allowance of the work material can be reduced, and the yield of the work material is good.

In addition, since the laminated belt has a flat plate shape with a larger radial width than its wall thickness, this restricts the direction of movement of the cutting blade, increases the flatness of the cutting surface, and prevents uneven wear of the cutting blade. It has the advantage of being less likely to occur and making it easier to use the cutting blade.

Further, even if one of the belt bodies constituting the laminated belt breaks, the other belt bodies are still connected, so the whole belt does not break instantly, and there is little danger.

Furthermore, the rotary body that winds and supports this belt-shaped cutter can be in the shape of a thin disk, and since this belt-shaped cutter cuts into the workpiece in the direction in which the winding surface extends, it is possible to The device is relatively small compared to its dimensions, and the installation space is small.

Furthermore, since it is belt-shaped and relatively lightweight, it is easy to transport and handle, and since the vibrations generated during cutting are attenuated at the contact surface of each belt body, it is less noisy than other cutting tools. can also be reduced.

=7- "Embodiment" FIG. 1 is a front view showing a state in which a first embodiment of a belt-shaped cutter according to the present invention is attached to a cutting device to be described later.

This belt-shaped cutter I has a plurality of pieces (
In this example, there are three (3) endless belt bodies 2A.

It is composed of a laminated belt 2 in which 2B and 2C are laminated concentrically, and a large number of grindstone segments (cutting blades) 4 fixed at equal intervals on the outer peripheral surface of the outermost belt body 2C.

The belt bodies 2A, 2B, and 2C are made of metal and are made of elongated strips with a rectangular cross section, and are welded by butting both end surfaces together.
In the figure, 6A, 6B, and 6C are the welded parts. These belt bodies 2A, 2B, 2C have a longer overall circumference as they are closer to the outer circumference, and each belt body 2A, 2B, 2G abuts without a gap,
These abutting surfaces are joined in a fixed area by the welding portions 6A, 6B, 6C and joint portions 8 provided at regular intervals, and other portions of the abutting surfaces are not joined.

The intervals between the joints 8 are set to a length that does not cause misalignment of each belt body 2A, 2B, 2C when the laminated heald 2 is run, and joining methods include brazing, laser welding, spot welding, Electron beam welding etc. are used.

The specific material of the belt bodies 2Δ, 2B, and 2C is S.
K steel, stainless steel, SKD@, SUP steel, SNCM steel, piano wire, etc. are suitable. Each belt body 2A, 2B, 2
C may be made of the same material, but if the belt bodies 2A and 2C on both sides are made of a relatively hard material and the central belt body 2B is made of a relatively soft material, the belts on both sides Body 2A.

The effect of relieving the stress caused by the expansion and contraction of 2C by the central belt body 2B can be obtained.

Preferred values for the cross-sectional dimensions of the laminated belt 2 vary depending on the use of the belt-shaped cutter, but for example, in the case of cutting ordinary large stones, the wall thickness is about 1 to 5 mm, and the radial width is about 3 to 20 mm.
A value of about p is suitable. With dimensions within this range, sufficient tensile strength and cutting performance can be obtained as a large stone cutter.

Furthermore, if the laminated heald 2 has the above dimensions, each belt body 2A
, 2B, and 2C, in order to obtain sufficient flexibility, the width in the rotation axis direction (thickness direction) of the laminated bell l-2 is 1 to 1.
It is desirable that the diameter is about 5u and the radial width is about 1 to 5R.

A protrusion IO having a V-shaped cross section is formed over the entire length on the inner peripheral edge of the innermost belt body 2A. This protrusion 10 is
As shown in FIG. 5, the V of the back plate 70 described later is
It engages with the i70A to prevent the belt-shaped cutter 1 from swinging during cutting, and the cross-sectional angle of its tip is 60 to 1.
About 6o° is preferable.

On the other hand, the grindstone segment 4 is composed of a metal chip support 14 in the shape of a rectangular plate, and a rectangular parallelepiped-shaped abrasive grain layer depth I2 of the same width (thickness) fixed to the end surface of this depth support I4. ing.

As shown in FIG. 4 and FIG.
The thickness is set to about yttytr. Due to this thickness difference, the laminated belt 2 does not come into contact with the workpiece during cutting.

As the abrasive layer chip 12, diamond or CBN is used.
A metal bond abrasive grain layer made by sintering super abrasive grains such as
It is fixed by brazing, integral sintering, laser welding, electron beam welding, etc. The grain size and concentration of the superabrasive grains, and the radial width of the abrasive grain layer tip I2 are different from those of the belt-shaped cutter I.
It should be decided according to the usage.

As shown in FIG. 2, flat protrusions 16 are formed at both ends of the end surfaces of the two examples of laminated belts of the chip support 14, and the end surfaces of these protrusions 16 are attached to the outer peripheral surface of the belt body 2C by means similar to those described above. It is welded with. A gap I8 of a certain amount is formed in the center of the chip support 14 with the belt body 2C.

This gap 18 is provided to allow the belt body 2C to protrude between the protrusions 16 when the laminated belt 2 is wound around the sprocket 60 of the cutting device and bent. It is determined according to the diameter etc.

The cross-sectional shape of the outermost belt member 2C is tapered toward the outer periphery, as shown in FIG. 4, and the width at the outer periphery is equal to that of the grindstone segment 4. These pair of tapered surfaces 11 are pressed against a tapered surface 62A (described later) of each sprocket 60, and the sprocket 60 and the laminated belt 2
Prevent slipping.

Next, a cutting device using the belt-shaped cutter I will be described with reference to FIGS. 8 and 9. FIG. 8 is a front view of the apparatus, and FIG. 9 is a sectional view along the JX-IX line. The upper, lower, left, and right directions used in the following description are based on FIG. 8.

Reference numerals 20 in the figure represent a pair of pillars erected at intervals on the floor F, and guide rails 22 are vertically fixed to the front surfaces of these pillars 20, respectively. As shown in FIG. 9, a pair of guide grooves 24 are formed in the vertical direction on both side surfaces of these guide rails 22 over the entire length.

A base plate 32 is arranged parallel to the front surface of each guide rail 22 at the same height. These base plates 32 have a pair of locking claws 34 on the back surface, and these locking claws 34 are fitted into the guide grooves 24 of the guide rails 22.
is supported along the guide rail 22 so as to be movable up and down.

A recess 28 extending in the vertical direction is also formed on the front surface of the guide rail 22, and the screw shaft 3 is inserted into the recess 28.
0 is arranged in the vertical direction, and its lower end is connected to the bearing 2.
It is rotatably supported by a support 20 via a support 6. Each base plate 32 is attached to each screw shaft 30 via a female screw member 36, respectively.

A top plate 46 is horizontally attached to the upper end of each support 20, and the upper end of each screw shaft 30 is connected to a gear box 48 fixed on the top plate 46. Each gear box 48 is connected to each other via a horizontal rod 50, and is further connected to a lifting motor 52 fixed to the left end of the top plate 46.

Then, when the lifting motor 52 is operated, the gear box 48
The screw shafts 30 rotate in the same direction through the screw shafts 30, and the base plates 32 move up and down while maintaining the same height.

One end of the wire 3g is fixed to the side surface of each base plate 32. These wires 38 are extended upward and the top plate 46
It is hung on a pulley 40 provided above and descends along the column 20, and a balance weight 42 is connected to the lower end of the column. These balance weights 42 are each supported by a guide member 44 so as to be movable up and down, and are balanced with the elevating section including the guide plate 32.

A shaft support 54 is disposed on the front surface of the right base plate 32, and a mounting groove 56 of the shaft support 54 is fitted into a horizontal guide portion 64 provided on the front surface of the base plate 32. It is movable in the left and right direction along the line and can be fixed at any position. Thereby, the belt-shaped cutter 1 can be attached to each sprocket 60, and its tension can be adjusted.

A rotating shaft 58 protruding forward is rotatably attached to the shaft support 54, and a sprocket 60 is attached to this rotating shaft 58.
is fixed vertically.

A belt groove 62 perpendicular to the outer circumferential surface is formed on the outer circumferential surface of the sprocket 60, as shown in FIG. The opening width of this belt groove 62'' is slightly larger than the wall thickness on the inner peripheral side of the laminated belt 2, and both side wall surfaces near the opening become a tapered surface 62A complementary to the tapered surface 11 of the laminated belt 2. There is.

A plate support 66 is disposed adjacent to the left side of the shaft support 54, as shown in FIG. 9, and is slidably attached along the guide portion 64. This plate support 66
is connected to a plate extension mechanism (not shown), which pulls the plate support 66 to the right;
, applies tension to the back plate 70, which will be described later.

The left end of the plate support 66 protrudes to the same level as the belt-shaped cutter 1, and a bank plate 7 is provided on the front end surface of the plate support 66.
The right end of 0 is sandwiched between a fixing plate 68 and fixed with a bolt 69.

The back plate 70 is a metal plate with a thickness equal to that of the innermost belt body 2A, and its height is determined by the belt-like force wound between each sprocket 60 and the vertical distance between the parallel parts of the ivy 1. It is set approximately equal to the distance. Further, the horizontal width thereof is set to be slightly smaller than the horizontal separation distance of each sprocket 60.

The materials of this back play 1/70 include SUP steel,
SNCM steel, SKD steel, SK steel, stainless steel, etc. are preferred.

IR70A having a cross-sectional shape complementary to the protrusion 10 of the laminated belt 2 is formed on the upper and lower edges of the hack plate 70, and each protrusion 10 is formed with the VWlj7OA.
It is slidably fitted into the

On the other hand, a plate support 72 is directly fixed to the left base plate 32, and the left end of the back plate 70 is fixed to the front end of the plate support 72 by a fixing plate 68 and bolts 69, as in the case described above. .

A rotating shaft 76 is rotatably mounted on the left base plate 32 facing forward at the same height as the rotating shaft 58, and a pulley 78 and a sprocket 60 are coaxially fixed to this rotating shaft 76. ing.

A drive motor 84 is fixed to the side surface of the base plate 32, and a pulley 82 is fixed to the rotating shaft of this motor 84. A belt 80 is wound between the pulley 82 and the pulley 78, and by operating the drive motor 84, each sprocket 60 rotates, and the V grooves 60 of both sprockets 60 rotate.
A belt-shaped cutter 1 wound between A and A runs.

On the other hand, a pair of rails 90 and 92 are laid on the floor F between the respective pillars 20 in the front-rear direction, and one of the rails 90 and 92 is
The upper end of 2 is pointed in the shape of a 7. These rails 90.9
A trolley 94 is placed on top of the rail 90.2, and the plurality of pairs of wheels 96.98 of this trolley 94 run along the rails 90.92. The circumferential surface of the wheel 98 has a cross-sectional shape complementary to that of the rail 92. Further, a horizontal work table 100 is fixed to the upper surface of the cart 94.

In order to perform cutting with the belt-shaped cutter 1 using the above-described device, first operate the lifting motor 52 to raise each base plate 32, and position the work material such as stone placed on the table 100 in the front-rear direction. Ru.

Next, the plate extension mechanism is activated, and the plate support 6
6 to the right to apply proper tension to the back plate 70. Also, if the tension of the belt-shaped cutter I is insufficient,
Move the shaft support 54 to the right to adjust the tension.

Then, the driving motor 84 is operated to cause the belt-shaped cutter 1 to travel, and the lifting motor 52 is operated to lower the belt-shaped cutter 1 at a desired cutting speed, thereby continuing cutting to the lower end of the workpiece.

According to the belt-shaped cutter I having the above configuration, the following excellent effects can be obtained.

■ Each belt body 2A, 2B, which constitutes the laminated heald 2,
2C expands and contracts between the joint parts 8, so that sufficient flexibility can be obtained in the radial direction even though the laminated bell l-2 has a large radial width. Therefore, internal loss during rotation of the laminated belt 2 is small,
The driving force required to run this belt-shaped cutter I using the sprocket 60 is small and difficult.

■ Since the laminated belt 2 has a large width in the radial direction compared to its wall thickness, it is easy to obtain high tensile strength, and accordingly, it is possible to increase the cutting load and increase the cutting speed. Since the wall thickness is small compared to the tensile strength, the cutting allowance of the workpiece can be reduced, and the yield of the workpiece is good.

■ Since the laminated belt 2 has a flat plate shape with a radial width larger than its wall thickness, this restricts the direction of movement of the cutting blade, increases the flatness of the cutting surface, and prevents uneven wear of the cutting blade. It has the advantage of being less likely to occur and making it easier to use the cutting blade.

■ Belt bodies 2A and 2B that constitute the laminated belt 2.

Even if one of the 2Cs breaks, the other belt bodies are still connected, so the whole belt will not break instantly, and there is little danger.

■ Sprocket 60 that winds and supports the belt-shaped cutter 1
The belt-shaped cutter can be in the shape of a thin disc, and since the belt-shaped cutter cuts into the workpiece in the direction in which the wound surface extends, the device is relatively small compared to the size of the workpiece that can be cut, making it easy to install. Space is small.

■ Since the laminated belt 2 has no mechanical connections, there is no wear and the overall length does not change. Therefore, maintenance and adjustment efforts can be simplified.

■ The belt-shaped cutter I is belt-shaped and relatively lightweight, so it is easy to transport and handle, and the vibrations generated during cutting are attenuated at the contact surfaces of the belt bodies 2A, 2B, and 2C, so it is easy to transport and handle. Noise can also be reduced compared to other cutting tools.

In the above embodiment, both the upper and lower ends of the back plate 70 were engaged with the inner circumferential edge of the belt-shaped cutter, but the upper and lower widths of the back plate 70 are made smaller so that only the lower edge of the belt-shaped cutter is engaged with the inner circumferential edge of the belt-shaped cutter. It may also be configured to engage with the lower inner peripheral edge.

6 and 7 show a modification of the above embodiment, in which the laminated belt 2 does not have a tapered surface II, but instead the bottom surface of the belt groove 62 of each sprocket 60 , a V complementary to the protrusion 10 of the laminated belt 2
i7962B. This configuration also allows the laminated belt 2 to
can prevent idling.

Next, FIGS. 10 to 14 are diagrams showing a second embodiment of the present invention. This belt-shaped cutter l is a laminated belt 2
A large number of saw blades 102 are integrally formed on the outer periphery of the outermost belt body 2C that constitutes the belt body 2C, and is used for cutting large wood, metal, plastic, etc.

The saw blade 102 consists of diagonal blade parts 102A and 102B that are alternately bent in the thickness direction of the laminated belt 2, and its dimensions, shape, etc. may be the same as those of a normal saw blade. However, in this case, it is desirable that the outermost belt body 2C be formed of a harder metal material than in the first embodiment.

Even with such a cutting belt-shaped cutter, the first
Excellent effects similar to those of the example can be obtained.

In each of the embodiments described above, the protrusions 10 are formed on the laminated belt 2 and the grooves 70A are formed on the back plate 70, but these may be formed in the opposite manner.

In addition, in the second embodiment, it is also possible to have a configuration in which each saw blade 102 is separate and joined to the outer circumferential surface of the laminated belt 2, and in the first embodiment, an abrasive grain layer is provided on the outer circumferential surface of the belt body 2C. A configuration in which chips are directly bonded is also possible.

Further, in each of the above embodiments, the laminated belt 2 is composed of three belt bodies 2A, 2B, and 2C, but the number can be increased to two or four or more depending on the width of the laminated belt 2 in the radial direction. May be changed.

Furthermore, in the present invention, it is also possible to perform the following surface treatment on the main parts of the belt body 1 and the cutting device to improve corrosion resistance and abrasion resistance.

(a) Carbides such as TiC, nitrides such as TiN, BN
One or more substances selected from borides such as Al2O3, oxides such as Al2O3, diamond, etc. are coated on the entire surface or sliding surface of the laminated belt 2 using one of the ion blasting method, PVD method, CVD method, etc. Coat.

(b) Using powder plasma overlay or overlay welding,
A coating layer of a wear-resistant material such as ceramic or cobalt alloy is formed on the entire surface or sliding surface of the laminated belt 2.

(C) A highly wear-resistant thin plate made of cemented carbide, high-strength ceramics, etc. is fixed to the surface of the protrusion 10 or the end face of the back plate 70 by brazing, fixing, or crimping. .

(d) Apply Kanigen plating, hard chrome plating, nickel plating, etc. to the entire surface or sliding surface of the belt body 1.

(e) Nitriding or carburizing is performed on the entire surface or sliding surface of the belt body 1 in a vacuum heat treatment furnace or the like.

Note that the method of using the belt-shaped cutter 1 is not limited to the above-mentioned cutting device; for example, it may be wound around three or more sprockets and run, or it may be driven by one sprocket and cut into an arc-shaped hack plate. It is also possible to have a structure in which the cutting material is run along the edge of the back plate and the work material is cut by the back plate side.

Further, the cutting edge portion of each saw blade 102Δ, ]02B may be made of a sintered body made of diamond, CBN, or the like. In that case, the service life can be extended and the work efficiency can be increased by increasing the load.

"Effects of the Invention" As explained above, according to the belt-shaped cutter according to the present invention, each belt body constituting the laminated belt expands and contracts separately between the joint points provided at intervals. As a result, sufficient flexibility in the radial direction can be obtained even though the radial width of the laminated heald is large. Therefore, internal loss when rotating and traveling this belt-shaped cutter is small, and the driving force required for rotation may be small.

In addition, since the laminated heald has a large radial width compared to its wall thickness, it is easy to obtain high tensile strength, which makes it possible to increase the cutting load and increase the cutting speed. Since the wall thickness is small compared to the tensile strength, the cutting allowance of the workpiece can be reduced, and the yield of the workpiece is good.

In addition, since the laminated belt has a flat plate shape with a larger radial width than its wall thickness, this restricts the direction of movement of the cutting blade, increases the flatness of the cutting surface, and prevents uneven wear of the cutting blade. It is less likely to occur, and the cutting blade is used more efficiently.

Further, even if one of the belt bodies constituting the laminated heald breaks, the other belt bodies are still connected, so the whole belt does not break instantly, and there is little danger.

In addition, the rotary body that winds and supports this belt-shaped cutter may be in the shape of a thin disk, and since this belt-shaped cutter cuts into the workpiece in the direction in which the winding surface extends, it is possible to cut into the workpiece. The device is relatively small compared to its dimensions, and the installation space is small.

Furthermore, the belt-shaped cutter is belt-shaped and relatively M
Since it is made of Mi, it is easy to transport and handle, and since vibrations generated during cutting are attenuated at the contact surfaces of each belt body, the noise is also lower than that of other cutting tools.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the first embodiment of the belt-shaped cutter (for cutting stones, etc.) according to the present invention attached to the main part of a cutting device; Fig. 2 is within the frame of Fig. 1; Fig. 3 is an enlarged view of the frame ■ in Fig. 1, Fig. 4 is a sectional view focused on IV-■ in Fig. 3, and Fig. 5 is a cross-sectional view along line ■-V in Fig. 2. 6 and 7 are sectional views showing modified examples of the belt-shaped cutter, FIGS. 8 and 9 are front views showing a cutting device for the belt-shaped cutter, and FIG. 10 is a sectional view taken along the line IX-IXX. , a front view showing the second embodiment (for cutting) of the present invention, FIG. 11 is an enlarged view of the frame M in FIG. 10, and FIG.
Figure 1 is a cross-sectional view taken along the ■-X1 line. Figure 3 is a frame
Enlarged view within m, Figure 14 is x of Figure 13 ■-X IV
There is a cross-sectional view along the line. 1 Held-shaped cutter, 2...Laminated belt, 2A, 2
B, 2C, belt body, 4... Grindstone segment 1 6A, 6B, 6C joint, 8, joint, IO protrusion, I2 abrasive layer chip (cutting blade), I4 depth support, 16 convex part, 18 void.

Claims (5)

[Claims] (1) A plurality of flexible metal endless belt bodies are laminated concentrically to form a laminated belt having a radial width larger than an axial width, and the belt bodies are brought into contact with each other. A belt-shaped cutter characterized in that the surfaces are joined at multiple points at intervals in the longitudinal direction, and a number of cutting blades are provided at intervals in the longitudinal direction on the outer peripheral surface of the outermost belt body. (2) The belt-shaped cutter according to claim 1, wherein the cutting width of the cutting blade is larger than the axial width of the laminated belt. (3) The belt-shaped cutter according to claim 1 or 2, wherein the cutting blade is an abrasive layer chip. (4) The belt-shaped cutter according to claim 1 or 2, wherein the cutting blade is a cutting blade. (5) The cutting blade has a metal support portion at its base end, and both ends of the support portion in the longitudinal direction of the belt are welded to the outer circumferential surface of the outermost belt body. 5. The belt-shaped cutter according to claim 1, wherein a portion between both ends has a gap with the outermost belt body.