JP2013091128A - Cutter for high-strength fiber reinforced plastic plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut a high-strength fiber reinforced plastic plate into an accurate outer shape with extreme efficiency by an inexpensive cutting blade.SOLUTION: In this cutter, the high-strength fiber reinforced plastic plate 10 is mounted to a receiving base 1 and cut by being punched by a Thomson blade 3. The Thomson blade 3 is planar carbon steel having a carbon content of 0.5-0.7%. The planar carbon steel is bent or curved into a prescribed shape and quenched so that a cutting edge 4 has an HRC hardness of 64 or higher. A blade surface inclined angle (α) of a cross sectional shape orthogonal to a longitudinal direction of the cutting edge 4 is set to be larger than 25° and smaller than 60°.

Description

  The present invention relates to an apparatus for cutting a high-strength fiber reinforced plastic plate in which high-strength fibers made of carbon fibers or Kepler fibers are embedded in a cured plastic into a predetermined shape.

  Carbon fiber reinforced plastic plates with carbon fibers, which are high-strength fibers, embedded in cured plastics are reinforced with extremely tough carbon fibers, so they can be used in applications requiring strength such as aerospace and special vehicles. used. An apparatus for irradiating a laser beam has been developed as a cutting apparatus for the high-strength fiber-reinforced plastic plate. (See Patent Documents 1 and 2)

  The laser beam cutting apparatus described in these publications consumes a great deal of energy for cutting a high-strength fiber-reinforced plastic plate, and cannot efficiently cut in a short time. Also, as a cutting device for high-strength fiber reinforced plastic plates, a device for cutting with a water jet has been developed. However, this cutting device also consumes a large amount of energy and cannot be cut quickly and efficiently. Further, the laser beam or water jet cutting device has a drawback that both the equipment cost and the running cost are considerably increased.

  By the way, an apparatus for cutting a high-strength fiber material used as an aerospace material has been developed (see Patent Document 3). This cutting apparatus cuts a high-strength fiber material using a special cutting cutter. This cutting cutter has a cutting edge joined to the tip of the shank body. The cutting edge portion gradually decreases in thickness toward the tip. Further, the cutting edge portion is formed of a composite obtained by joining a super-hard portion constituting the cutting edge and a cemented carbide portion connecting the cutting blade and the shank body and integrally sintering the cutting edge portion. The tip of is formed with an ultra-high hardness part. A composite composed of a super-hard part and a super-hard alloy part is a mixture of high-hardness particles such as diamond and particles such as TiN and TiC used as a binding material, and these are press-molded at ultra-high pressure. A pellet-shaped super-hard part formed by sintering at a high temperature and a pellet-type cemented carbide part formed of tungsten carbide or the like were integrally sintered and processed into a predetermined shape. Is.

JP 2010-247206 A JP 2011-56583 A JP-A-4-69187

  Since the apparatus described in Patent Document 3 cuts a high-strength fiber material with a special cutting cutter, it can cut more efficiently than a laser beam or a water jet. However, since this cutting device advances the cutting cutter while reciprocating to cut the high-strength fiber material, the high-strength fiber reinforced plastic plate cannot be cut into a predetermined shape by one reciprocation. For this reason, the high strength fiber reinforced plastic plate is not efficiently punched into a specific shape. In particular, the cutting cutter is made into a complex body in which the ultra-high hardness part of the cutting edge is joined to the shank body with a cemented carbide part and integrally sintered, so the cutting cutter is processed into a complex curved shape. In addition, there is a disadvantage that the cutting cutter is extremely expensive.

  The present invention has been developed for the purpose of solving the above-mentioned drawbacks. An important object of the present invention is to cut a high-strength fiber reinforced plastic plate into a predetermined shape with a single reciprocating motion while using an extremely inexpensive cutting blade, so that it can be cut into an extremely accurate and accurate shape. Furthermore, it is an object of the present invention to provide a cutting device for a high-strength fiber reinforced plastic plate that can be manufactured at a low cost while significantly reducing the cost of a cutting blade.

Means for Solving the Problems and Effects of the Invention

The cutting device for a high-strength fiber reinforced plastic plate according to the present invention has a cut surface 2 for cutting a high-strength fiber reinforced plastic plate 10 formed by embedding a high-strength fiber made of carbon fiber or Kepler fiber in a cured plastic. The cradle 1 and the high strength fiber reinforced plastic plate 10 that moves toward the cut surface 2 of the cradle 1 and is arranged on the cut surface 2 are moved along a cutting edge 11A of the object 11 to be cut. A Thomson blade 3 having a cutting edge 4 that is punched in a non-linear shape and a blade drive mechanism 5 that reciprocates the Thomson blade 3 are provided. The Thomson blade 3 is a plate-like carbon steel having a carbon content of 0.5% to 0.7%. The plate-like carbon steel is bent or bent into a predetermined shape, and the HRC of the cutting edge 4 is obtained. The hardened surface is hardened to a hardness of 64 or more, and the blade surface inclination angle (α) of the cross-sectional shape perpendicular to the longitudinal direction of the blade edge 4 is larger than 25 degrees and smaller than 60 degrees. In the double-sided cutting device, the Thomson blade 3 is reciprocated by the blade drive mechanism 5, and the high-strength fiber reinforced plastic plate 10 disposed on the cut surface 2 of the cradle 1 is sandwiched between the cradle 1 and the Thomson blade 3. Cut along the cutting edge 11 </ b> A of the cut object 11.
However, in this specification, “blade surface inclination angle (α)” means an angle formed by both opposing surfaces of the blade edge portion.

  The above cutting device for high-strength fiber reinforced plastic plates uses a very inexpensive cutting blade to punch out high-strength fiber reinforced plastic plates into a predetermined shape with a single reciprocating motion, thereby providing an extremely efficient and accurate outer shape. Further, there is a feature that it can be cut at a low cost while significantly reducing the cost of the cutting blade. This is because the above-described cutting apparatus cuts a high-strength fiber-reinforced plastic plate with a Thomson blade having a unique structure. The above Thomson blade uses a plate-like carbon steel with a carbon content of 0.5% to 0.7%, and is bent or curved into a shape along the cutting edge of the workpiece having various outer shapes. In addition, the cross-sectional shape perpendicular to the longitudinal direction of the cutting edge 4 is processed so that the cutting edge angle is larger than 25 degrees and smaller than 60 degrees, and the HRC hardness of the cutting edge 4 is quenched to 64 or more. Therefore, it can be processed into a shape along the cutting edge of various objects to be cut using an extremely inexpensive material.

  Even if 200 carbon fiber reinforced plastic plates having a thickness of 2 mm are punched, the above-mentioned unique Thomson blade is not damaged and the punching is possible.

In the cutting device for a high-strength fiber-reinforced plastic plate of the present invention, the Thomson blade 3 can set the HRC hardness of the blade edge 4 to 65 or more.
Since the cutting device described above has an HRC hardness of the blade tip of the Thomson blade of 65 or more, the blade tip has a higher hardness and can have a longer life.

  In the cutting apparatus for a high-strength fiber-reinforced plastic plate of the present invention, the cutting edge portion of the Thomson blade 3 can be shaped to gradually increase the blade surface inclination angle (α) toward the cutting edge 4. The Thomson blade 3 has a small cutting edge angle (α) of the cutting edge 4 and has good cutting, and the cutting edge inclination angle (α) gradually increases as the cutting edge 4 is inserted into the high-strength fiber reinforced plastic plate 10. It becomes small and is smoothly inserted into the crack 14. For this reason, the characteristic which can cut the high intensity | strength fiber reinforced plastic board 10 more effectively is implement | achieved.

  In the cutting device for a high-strength fiber-reinforced plastic plate of the present invention, the blade surface inclination angle (α) of the Thomson blade 3 can be made larger than 30 degrees, and the HRC hardness of the blade edge 4 can be made 65 or more.

Furthermore, the cutting apparatus for a high-strength fiber-reinforced plastic plate of the present invention can use the Thomson blade 3 as a single blade.
Since the above cutting apparatus has one blade surface as a vertical surface and the other as an inclined surface, the cutting edge on the vertical surface side can be punched cleanly and cut.

The cutting device for a high-strength fiber-reinforced plastic plate according to the present invention is formed by forming a cutting edge 4 of a Thomson blade 3 and a cutting surface 2 of a cradle 1 into a three-dimensional curved surface as a shape along a three-dimensional curved surface. The strength fiber reinforced plastic plate 10 can be cut.
In the above cutting apparatus, since the cutting edge of the Thomson blade and the cutting surface of the cradle have a three-dimensional curved surface, a high-strength fiber reinforced plastic plate molded into a three-dimensional curved surface is to be cut as a three-dimensional curved surface. It can be punched and processed cleanly and efficiently.

In the cutting apparatus for a high-strength fiber reinforced plastic plate according to the present invention, the high-strength fiber embedded in the high-strength fiber-reinforced plastic plate 10 can be a carbon fiber.
The above-described cutting apparatus can efficiently cut a carbon fiber reinforced plastic plate using high-strength fibers as carbon fibers into a workpiece having a predetermined shape.

The cutting device for a high-strength fiber reinforced plastic plate according to the present invention can use high-strength fibers embedded in the high-strength fiber-reinforced plastic plate 10 as Kepler fibers.
The above cutting apparatus can efficiently cut a Kepler fiber reinforced plastic plate using Kepler fiber as a high-strength fiber and cut it into a workpiece having a predetermined shape.

The cutting device for a high-strength fiber reinforced plastic plate of the present invention can use the plastic of the high-strength fiber reinforced plastic plate 10 as an epoxy resin.
The above cutting apparatus can efficiently punch a high-strength fiber reinforced plastic plate made of a cured epoxy resin into a plastic in which high-strength fibers are embedded, and cut it into a workpiece having a predetermined shape.

  The cutting apparatus for a high-strength fiber reinforced plastic plate of the present invention can be a plate-like carbon steel having a thickness of the Thomson blade 3 that is thicker than 1 mm and thinner than 10 mm.

1 is a schematic perspective view of a cutting device for a high-strength fiber-reinforced plastic plate according to an embodiment of the present invention. It is a vertical sectional view showing an example of a Thomson blade. It is a vertical sectional view showing another example of a Thomson blade. It is a vertical sectional view showing another example of a Thomson blade. It is a vertical sectional view showing another example of a Thomson blade. It is an expanded sectional view showing other examples of a Thomson blade. It is an expanded sectional view showing other examples of a Thomson blade. It is an expanded sectional view which shows the state which the Thomson blade of the cutting device concerning the Example of this invention cuts a high strength fiber reinforced plastic board. It is a cross-sectional view showing an example of a conventional Thomson blade.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies a cutting device for a high-strength fiber-reinforced plastic plate for embodying the technical idea of the present invention, and the present invention does not specify the cutting device as follows. Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The cutting device of the present invention cuts a high-strength fiber reinforced plastic plate formed by embedding high-strength fibers made of carbon fibers or Kepler fibers in a hardened plastic. The cutting device of the present invention cuts and cuts either a carbon fiber reinforced plastic plate or a Kepler fiber reinforced plastic plate with a Thomson blade. The cutting device of the present invention cuts a high-strength fiber-reinforced plastic plate in which carbon fibers and Kepler fibers are embedded in a cured plastic such as an epoxy resin or a phenol resin. The cutting apparatus of the present invention is not an apparatus that cuts a prepreg of a high-strength fiber reinforced plastic plate that is in an uncured state of the plastic and becomes a high-strength fiber reinforced plastic plate by curing the plastic, but a plurality of prepregs are laminated. This is a device for cutting a high-strength fiber-reinforced plastic plate made by curing plastic.

  The cutting apparatus shown in FIG. 1 moves toward a cutting surface 2 having a cutting surface 2 on the top surface on which a high-strength fiber-reinforced plastic plate 10 is placed and cut with a Thomson blade 3, and toward the cutting surface 2 of the receiving table 1, A Thomson blade 3 having a cutting edge 4 for punching a high-strength fiber-reinforced plastic plate 10 arranged in the cut surface 2 into a predetermined length along a cutting edge 11A of the workpiece 11, and this Thomson And a blade driving mechanism 5 for reciprocating the blade 3.

  The cradle 1 is a metal plate, and the cut surface 2 is a flat or three-dimensional solid curved surface. The cradle may be a resin or rubber plate. The cut surface 2 has a shape along the cut edge 11A of the cut object 11 obtained by cutting the high-strength fiber-reinforced plastic plate 10, that is, the cut edge 11A. Accordingly, the cradle 1 for punching the cut object 11 having the cut edge 11A to be cut as a flat surface has a cut surface 2 as a flat surface and the cut edge to be cut as a three-dimensional solid curved surface. The cradle for punching is made of a three-dimensional curved surface along the cutting edge of the object to be cut.

  The cradle 1 in FIG. 1 has an elastic sheet 1 </ b> A laminated on a cut surface 2. The elastic sheet 1A is a sheet-like rubber-like elastic body having a thickness of 1 mm to 10 mm. The cradle 1 in which the elastic sheet 1A is laminated on the upper surface is such that the cutting edge 4 of the Thomson blade 3 is brought into close contact with the elastic sheet 1A while the high-strength fiber reinforced plastic plate 10 is punched with the Thomson blade 3. The cutting edge 11A of the object 11 to be cut out from the high-strength fiber reinforced plastic plate 10 can be surely and neatly cut by inserting the third cutting edge 4 into the elastic sheet 1A. The cradle 1 in which the elastic sheet 1A is laminated on the upper surface can cleanly cut an object to be cut having the cutting edge 11A as a solid curved surface with the cutting edge 11A. However, the object to be cut 11 having the cut edge 11A as a flat surface can also be cut beautifully by laminating the elastic sheet 1A on the cut surface 2 as a flat surface. However, the cradle need not necessarily be provided with an elastic sheet on the upper surface, and can be cut by punching a high-strength fiber-reinforced plastic plate by bringing a Thomson blade close to or in contact with the cut surface of the cradle.

  The Thomson blade 3 is made of a plate-like carbon steel having a carbon content of 0.5% to 0.7%. The Thomson blade is preferably made of sheet carbon steel having a thickness of 2 mm to 5 mm. However, the Thomson blade may be a plate-like carbon steel having a thickness greater than 1 mm and less than 10 mm. If the Thomson blade is too thin, it is likely to be damaged by the impact of the punching process, and if it is too thick, the cut material inserted into the Thomson blade cannot be smoothly extracted.

  The Thomson blade is bent or curved in the previous step of quenching the plate-like carbon steel and processed into a shape along the cutting edge 11A of the workpiece 11 to be cut. The optimum carbon steel for the Thomson blade 3 has a carbon content of 0.6%. However, the carbon content can be used within the above range. The carbon steel of the Thomson blade 3 can be hardened by increasing the carbon content. However, since it becomes brittle as the carbon content increases, it is set to an optimum value within the aforementioned range in consideration of hardness and brittleness.

  The Thomson blade 3 in which the cutting edge 4 is processed into a shape along the cutting edge 11A of the object 11 to be cut, the cutting edge 4 being a closed loop, the high-strength fiber reinforced plastic plate 10 is punched and processed by the closed-loop cutting edge 4 11 is separated. In the plate-like carbon steel obtained by processing the plate-like carbon steel into a closed loop, the cutting edge 4 is polished to provide the cutting edge 4. The Thomson blade 3 is polished so that one side of the plate-like carbon steel is inclined and provided with a blade tip 4 and then hardened by hardening. The Thomson blade 3 of FIGS. 2 and 3 is made by polishing plate carbon steel so that the tip angle in the cross-sectional shape perpendicular to the longitudinal direction of the blade edge 4, that is, the blade surface inclination angle (α) is about 40 degrees. ing. The plate-like carbon steel can be polished with a file or a grindstone to provide the cutting edge 4.

  The cutting ability of the high-strength fiber-reinforced plastic plate is lowered regardless of whether the Thomson blade 3 has a large or small blade inclination angle (α). Therefore, the blade surface inclination angle (α) of the Thomson blade 3 is larger than 25 degrees, preferably larger than 30 degrees. Furthermore, the blade surface inclination angle (α) of the Thomson blade is made smaller than 60 degrees.

  The state in which the Thomson blade of the present invention cuts the high-strength fiber-reinforced plastic plate is shown in the sectional view of FIG. As shown in this figure, the Thomson blade 3 presses the cutting edge 4 against the surface of the high-strength fiber reinforced plastic plate 10, and as shown in FIG. A crack 14 is made by slightly cutting the surface. Further, when the cutting edge 4 of the Thomson blade 3 cuts the high-strength fiber reinforced plastic plate 10 deeply, as shown in FIG. 8 (2), the wedge portion 3 A positioned above the cutting edge 4 in the drawing is inserted into the crack 14. Then, the crack 14 is expanded. In a state where the wedge portion 3A expands the crack 14, the high-strength fiber 15 embedded in the cured plastic is easily pulled by the plastic on both sides of the crack 14 and easily cut. In this state, the cutting edge 4 of the Thomson blade 3 is further inserted deeply into the crack 14 to cut the high-strength fiber 15 that is easily cut. The cutting edge 4 of the Thomson blade 3 is further inserted deeply into the crack 14 to completely cut the high-strength fiber-reinforced plastic plate 10.

  The Thomson blade 3 in FIG. 8 has a shape in which the blade surface inclination angle (α) gradually increases toward the blade edge 4. This Thomson blade 3 can increase the blade surface inclination angle (α) of the blade edge 4 to prevent damage to the blade edge, and can also reduce the blade surface inclination angle (α) of the wedge portion 3A to increase the strength of the fiber reinforced plastic. The wedge portion 3A is smoothly inserted into the crack 14 formed on the surface of the plate 10, and the high-strength fiber reinforced plastic plate 10 can be cut more efficiently.

  In the cutting apparatus of the present invention, the blade surface inclination angle (α) of the Thomson blade 3 is extremely large as compared with the conventional Thomson blade 3. The cross-sectional view of FIG. 9 shows a cross-sectional view of a conventional Thomson blade 3. As shown in this figure, the conventional Thomson blade 3 has a shape in which the blade surface inclination angle (α) is considerably small and the cut sheet or the like is reliably cut by the sharp blade edge 4.

  In the Thomson blade of the cutting apparatus of the present invention, the hardened plate carbon steel is quenched to a unique hardness, and the blade surface inclination angle (α) is remarkably increased as compared with the conventional Thomson blade. Unlike the conventional Thomson blade, this Thomson blade does not cut an object to be cut with only a sharp blade edge. A Thomson blade with a specific hardness and a specific blade surface inclination angle (α) efficiently cuts a high-strength fiber reinforced plastic plate that is considered to be too hard to cut with a blade, and does not damage the blade edge. This is because the wedge portion is inserted into the crack of the high-strength fiber reinforced plastic plate, and the high-strength fiber is cut in a state where it is easily cut.

  The Thomson blade 3 in FIGS. 2 and 3 has a cutting edge 4 as a single blade. Since the single-sided Thomson blade 3 has one surface of the cutting edge 4 as the vertical surface 4A, the vertical surface 4A can be used as the cutting edge 11A of the workpiece 11, and the cutting edge 11A of the workpiece 11 can be cut in a clean state. When the high-strength fiber reinforced plastic plate 10 is punched with the Thomson blade 3, it is separated into an object 11 to be cut and a waste part 13 to be discarded. The Thomson blade 3 in FIG. 2 is punched so as to provide the through hole 12 in the high-strength fiber-reinforced plastic plate 10. The Thomson blade 3 is a single blade having an inclined surface 4B on the inner surface, and the portion to be punched as the through hole 12 is the discarding portion 13 and the outer side of the through hole 12 is the workpiece 11 and the cutting edge 11A of the workpiece 11 is clean Can be cut. This is because the cutting edge 11A is cut by the vertical surface 4A of the Thomson blade 3. The Thomson blade 3 in FIG. 3 punches a high-strength fiber-reinforced plastic plate 10 and cuts the workpiece 11 inside the Thomson blade 3. The Thomson blade 3 is a single-edged blade having an inclined surface 4B on the outside. A portion to be cut out inside the Thomson blade 3 is a workpiece 11 and a portion separated outside the Thomson blade 3 is a waste portion 13 to be cut. 11. The cutting edge 11A on the outer periphery can be cut cleanly.

  Furthermore, as shown in FIG. 4, the Thomson blade 3 can also use the blade edge | tip 4 as the double blade which makes both surfaces the inclined surface 4B.

  The Thomson blade 3 of FIGS. 2 and 3 cuts a high-strength fiber-reinforced plastic plate 10 into a flat shape. As shown in FIG. 5, the Thomson blade 3 has a structure in which a high-strength fiber reinforced plastic plate 10 molded into a three-dimensional curved surface has a three-dimensional structure with the cutting edge 4 along a three-dimensional curved surface. 11A can be punched into a solid curved surface and cut. In this Thomson blade 3, the cutting edge 4 is a three-dimensional curved surface, and the cut surface 2 of the cradle 1 is also a three-dimensional curved surface along the cutting edge 4 of the Thomson blade 3.

  Furthermore, the Thomson blade 3 gradually increases the blade surface inclination angle (α) toward the blade edge 4 as shown in the enlarged sectional view of FIG. The reason why the blade surface inclination angle (α) is increased toward the cutting edge 4 is to prevent the cutting edge 4 from being damaged while efficiently cutting the hard and tough high-strength fiber reinforced plastic plate 10 with the cutting edge 4. . The Thomson blade 3 starts cutting by bringing the cutting edge 4 having a large blade surface inclination angle (α) into contact with the surface of the high-strength fiber-reinforced plastic plate 10 first, and after the cutting is started, the blade surface inclination angle is set. Cutting is performed so that the object to be cut 11 and the discarding unit 13 are separated from each other at a portion where (α) becomes gradually smaller. The Thomson blade 3 shown in the enlarged sectional view of FIG. 6 is polished so that the inclined surface 4B of the single blade is curved, and the blade surface inclination angle (α) is gradually increased toward the blade edge 4. As shown in the enlarged sectional view of FIG. 7, the Thomson blade 3 can be polished so that the blade surface inclination angle (α) gradually increases toward the blade edge 4.

  The plate-like carbon steel is quenched so that the HRC hardness of the cutting edge 4 is about 65 with the cutting edge 4 polished and the cutting edge 4 provided. The hardness of the cutting edge 4 can be increased to increase the life, but if it is too hard, it becomes brittle and easily damaged during punching. Therefore, the Thomson blade 3 is quenched so that the HRC hardness of the blade edge 4 is higher than 64 and lower than 66. The hardness of the blade edge 4 after quenching is controlled by the quenching temperature. The hardness of the cutting edge 4 can be increased by increasing the quenching temperature, and the hardness can be decreased by decreasing the temperature. For example, carbon steel is quenched at a quenching temperature of 800 ° C. to 900 ° C., and the HRC hardness is set to the above range. The Thomson blade 3 having an HRC hardness of 65 after quenching can have this quenching temperature of 850 ° C.

  The blade drive mechanism 5 reciprocates the Thomson blade 3 up and down to punch and cut the high-strength fiber reinforced plastic plate 10 placed on the cutting surface 2 of the cradle 1 with the Thomson blade 3. The blade drive mechanism 5 includes an upper and lower base 6 that fixes the Thomson blade 3 and a cylinder 7 that reciprocates the upper and lower base 6 up and down. The Thomson blade 3 is fixed to the lower surface of the upper and lower base 6, and the upper and lower base 6 is reciprocated up and down by a cylinder 7 to punch out a high-strength fiber reinforced plastic plate 10 placed on the cradle 1. That is, the Thomson blade 3 is reciprocated by the blade driving mechanism 5 and is sandwiched between the cradle 1 and the Thomson blade 3 and placed on the cut surface 2 of the cradle 1. 11 is cut along a cutting edge 11A.

DESCRIPTION OF SYMBOLS 1 ... Stand 1A ... Elastic sheet 2 ... Cut surface 3 ... Thomson blade 3A ... Wedge part 4 ... Cutting edge 4A ... Vertical surface
4B ... Inclined surface 5 ... Blade driving mechanism 6 ... Upper / lower platform 7 ... Cylinder 10 ... High-strength fiber reinforced plastic plate 11 ... Cut object 11A ... Cutting edge 12 ... Through hole 13 ... Waste part 14 ... Crack 15 ... High strength fiber

Claims (10)

A cradle (1) having a cut surface (2) on the upper surface for cutting a high-strength fiber-reinforced plastic plate (10) formed by embedding high-strength fibers made of carbon fiber or Kepler fiber in a cured plastic, Move toward the cut surface (2) of the cradle (1) and place the high-strength fiber reinforced plastic plate (10) placed on the cut surface (2) with the cutting edge (11A) of the object to be cut (11). ) And a blade drive mechanism (5) for reciprocating the Thomson blade (3).
The Thomson blade (3) is a plate-like carbon steel having a carbon content of 0.5% to 0.7%,
The plate-shaped carbon steel is bent or curved into a predetermined shape,
The cutting edge (4) is quenched to a state where the HRC hardness is 64 or more, and
The blade surface inclination angle (α) of the cross-sectional shape orthogonal to the longitudinal direction of the blade edge (4) is larger than 25 degrees and smaller than 60 degrees,
The Thomson blade (3) is reciprocated by the blade drive mechanism (5), and the high strength fiber reinforced plastic plate (10) disposed on the cut surface (2) of the cradle (1) is the cradle (1). And a high-strength fiber-reinforced plastic sheet cutting device that is punched and cut along the cutting edge (11A) of the object to be cut (11) between the Thomson blade (3).   The cutting apparatus for a high-strength fiber-reinforced plastic plate according to claim 1, wherein the Thomson blade (3) gradually increases the blade surface inclination angle (α) toward the blade edge (4).   The cutting apparatus for a high-strength fiber-reinforced plastic plate according to claim 1, wherein a blade surface inclination angle (α) of the Thomson blade (3) is larger than 30 degrees.   The high-strength fiber-reinforced plastic sheet cutting device according to any one of claims 1 to 3, wherein the Thomson blade (3) has an HRC hardness of 65 or more of the blade edge (4).   The cutting apparatus for a high-strength fiber-reinforced plastic plate according to any one of claims 1 to 4, wherein the Thomson blade (3) is a single blade.   The cutting edge (4) of the Thomson blade (3) and the cut surface (2) of the cradle (1) are shaped along a three-dimensional curved surface, and are reinforced with high strength fibers formed into a three-dimensional curved surface. 6. A cutting apparatus for a high-strength fiber-reinforced plastic plate according to claim 1, wherein the plastic plate (10) is cut.   The high strength fiber reinforced plastic plate cutting apparatus according to any one of claims 1 to 6, wherein the high strength fiber embedded in the high strength fiber reinforced plastic plate (10) is a carbon fiber.   The high-strength fiber-reinforced plastic plate cutting apparatus according to any one of claims 1 to 6, wherein the high-strength fibers embedded in the high-strength fiber-reinforced plastic plate (10) are Kepler fibers.   The cutting device for a high-strength fiber reinforced plastic plate according to any one of claims 1 to 8, wherein the plastic of the high-strength fiber reinforced plastic plate (10) is an epoxy resin.   The cutting apparatus for a high-strength fiber-reinforced plastic plate according to any one of claims 1 to 9, wherein the thickness of the Thomson blade (3) is thicker than 1 mm and thinner than 10 mm.

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