WO2011114592A1 - 炭素繊維基材の切断方法 - Google Patents
炭素繊維基材の切断方法 Download PDFInfo
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- WO2011114592A1 WO2011114592A1 PCT/JP2010/072473 JP2010072473W WO2011114592A1 WO 2011114592 A1 WO2011114592 A1 WO 2011114592A1 JP 2010072473 W JP2010072473 W JP 2010072473W WO 2011114592 A1 WO2011114592 A1 WO 2011114592A1
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- WIPO (PCT)
- Prior art keywords
- cutting
- carbon fiber
- laser
- base material
- substrate
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/16—Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/703—Cooling arrangements
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
- D06H7/22—Severing by heat or by chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/16—Composite materials, e.g. fibre reinforced
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/16—Composite materials, e.g. fibre reinforced
- B23K2103/166—Multilayered materials
- B23K2103/172—Multilayered materials wherein at least one of the layers is non-metallic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/38—Fabrics, fibrous materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
Definitions
- the present invention relates to a method for cutting a carbon fiber base material made of a fabric-like material containing at least carbon fibers, and in particular, for producing a fiber reinforced plastic (hereinafter sometimes abbreviated as FRP [Fiber Reinforced Plastic)).
- FRP Fiber Reinforced Plastic
- the present invention relates to a method for cutting a carbon fiber base material that is suitable for accurately cutting a base material into a predetermined shape.
- CFRP Carbon Fiber Reinforced Plastic
- CFRP molding method various methods such as a prepreg / autoclave method, an RTM (Resin Transfer Molding) molding method, an RFI (Resin Film Infusion) molding method, or a molding method derived therefrom are proposed.
- the RTM molding method is, for example, preparing a carbon fiber substrate made of a fabric containing carbon fibers or a laminate in which a plurality of the fabrics are laminated, and forming a preform formed in a desired shape in advance. Attention is focused on the fact that CFRP having a complicated shape can be obtained by impregnating and curing the matrix resin injected into the mold.
- fabrics containing carbon fibers and laminates thereof, and preforms obtained by preliminarily shaping them into a predetermined shape are formed into a predetermined shape with a normal blade.
- the following problems may occur. That is, since the carbon fiber is very thin with a diameter of about 10 ⁇ m, when trying to contact and cut the laminate or preform of the carbon fiber fabric with a blade, the carbon fiber itself is solid and tries to cut. The part will be crushed and cut. For this reason, the carbon fiber is easily frayed at the cut end face by the repulsive force. In particular, if the fabric is laminated to form a preform and then cut, the cut surfaces tend to be uneven in the thickness direction.
- Patent Document 1 and Patent Document 2 describe a method of obtaining a sheet-like molded product of short fiber (about 3 to 20 mm) carbon fiber via a phenol resin or the like. ing.
- a method for producing this sheet-like molded product it is described that short carbon fibers are randomly dispersed in a two-dimensional plane and fired at a high temperature of about 2000 ° C. or higher in an inert atmosphere together with a phenol resin.
- the sheet-like molded articles described in these documents are suitably used for carbon fiber electrodes, and are not used by newly impregnating a matrix resin into a sheet-like molded article.
- the elastic modulus and strength of the carbon short fiber itself cannot be obtained.
- the sublimation cutting temperature of carbon fiber is about 3800 ° C., which is higher than that of metal (iron is about 1600 ° C.), and the difference between the atmospheric temperature and the cutting temperature is large, so that heat energy is easily dissipated.
- the thermal conductivity of carbon fiber itself is superior to that of a general inorganic material, depending on the form of the base material composed of the cloth-like material, the cutting direction, that is, the thickness direction (particularly the thickness of the base material composed of the laminate).
- the cutting temperature by the laser does not rise sufficiently, that is, if the temperature does not rise to the sublimation cutting temperature of the carbon fiber, a defective cutting portion will occur.
- focal length focal length for condensing
- the object of the present invention is to cut the carbon fiber base material with a laser in order to solve the above-mentioned problems when cutting the carbon fiber base material with a laser and other problems associated with laser cutting processing. It is an object of the present invention to provide a method for cutting a carbon fiber base material capable of stably performing laser cutting that can expect performance and an excellent cutting end face shape as described above in a target desired state.
- the method for cutting a carbon fiber substrate according to the present invention is a method for cutting a carbon fiber substrate composed of a fabric-like material containing at least carbon fiber with a laser.
- the cutting method is characterized in that the substrate is cut by setting the initial conditions that can suppress or prevent the fluctuation of the state from the target state.
- the carbon fiber base material composed of a fabric-like material containing at least carbon fibers in the present invention includes a carbon fiber base material composed of virtually any carbon fiber-containing fabric-like material, and the cloth-like material alone, Includes both laminates.
- the form of the fabric-like material includes, for example, forms of a unidirectional woven base material in which carbon fibers are aligned in one direction, a multiaxial stitch base material, a non-woven form, a plain weave, a twill, a knit, a blade, Furthermore, a hybrid configuration with glass fiber or organic fiber may be used.
- a substrate having a laminate structure in addition to a fabric-like material containing carbon fibers, it consists of glass fibers, aramid fibers, PBO (polyparaphenylene benzobisoxazole) fibers, boron fibers, alumina fibers, and the like.
- a fabric-like material may be included.
- molded by the predetermined shape is also contained in the carbon fiber base material of this invention.
- a preferred form of the base material is a base material composed of the carbon fiber-containing cloth-like material composed of continuous carbon fibers, and more preferably, the carbon fiber-containing cloth-like material composed of only carbon fibers.
- the present invention is mainly directed to a so-called dry carbon fiber base material in which the base material is not impregnated with a resin (matrix resin), but the base material in which the base material is impregnated with the resin, for example, the resin is cured.
- the prepreg impregnated in the so-called B-stage state is also included in the carbon fiber substrate of the present invention.
- a specific initial condition that can suppress or prevent a change in the state at the time of cutting the substrate with a laser from the target state is set, Cut the material. Suppressing or preventing the fluctuation from the target state suppresses or prevents the undesirable dissipation of heat by the laser for cutting as described above, or reduces the workable laser focal length of the part to be cut of the substrate. It means to prevent the head from being out of range, further to suppress or prevent clogging of the head that irradiates the laser.
- the base material when the carbon fiber base material is placed on a jig and cut with a laser, the base material can be partially received by the receiving jig.
- the receiving jig Basically, it is designed to realize a form in which heat is not easily dissipated at the time of laser cutting processing by receiving the base material partially at the part where heat conduction from the base material is difficult to occur with a jig. . That is, as described above, the sublimation cutting temperature of the carbon fiber is about 3800 ° C., which is higher than that of the metal, and the difference between the atmospheric temperature and the cutting temperature is large, so that heat energy is easily dissipated.
- the jig heats up quickly and the heat energy is dissipated. Can be prevented.
- the cutting position of the base material is preferably set to a position where the base material is not in contact with the receiving jig.
- a preferable distance range includes a range of 1 mm to 200 mm, 2 mm to 100 mm, and further 3 mm to 75 mm.
- a receiving jig may be disposed under a fiber bundle in a direction not in direct contact with the fibers on the cutting line.
- the contact support portion of the receiving jig is also preferable to set the contact support portion of the receiving jig to the base material in the form of a strip, a line, or a dot.
- the contact area between the receiving jig and the base material can be surely reduced, and undesirable heat dissipation can be reliably reduced.
- the contact surface of the receiving jig with respect to the base material is formed from a material having at least heat insulation.
- the thermal conductivity between the base material and the receiving jig can be lowered, and undesirable heat dissipation can be more reliably reduced.
- the base material is received by the receiving jig on both sides of the cutting position. Is preferably supported.
- a carbon fiber substrate particularly a dry substrate not impregnated with a resin, has a relatively high flexibility and is easily bent.
- the base material is received on both sides of the cutting position, and the bending is suppressed to be small as a both-end support form.
- the end of the base material hangs down or the layers are easily peeled off in the case of a laminated base material. Therefore, when cutting the end part, the base material is supported by a receiving jig on both sides of the cutting position. It is preferable.
- the receiving jig may be provided with a vacuum suction function, for example.
- a laser head is used to irradiate a laser, and soot as a sublimate of the substrate from the cutting site enters the laser head.
- a gas preferably an inert gas [for example, nitrogen gas]
- this gas coaxially with the irradiation laser.
- suction means can be provided in the laser head so that wrinkles generated when the substrate is cut can be sucked. Since the heel rises upward, the suction port of the suction means is preferably installed at a position including a height equal to or higher than the cutting point. In addition, when gas is injected, not only a small amount of soot is blown off on the back side of the substrate, but it is better to provide a suction port (avoid laser light) on the back side.
- the carbon fiber substrate to be cut is in the form of a laminate or a preform that has been pre-shaped into a predetermined shape. Either can be targeted.
- it is set as the form of a laminated body, it is preferable to consist of the laminated body which bonded and integrated the cloth-like thing to which particulate resin was provided on the single side
- FIG. 1 shows a method for cutting a carbon fiber substrate according to an embodiment of the present invention, and in particular, an example in which a peripheral portion of a preform made of a laminate of fabric-like materials containing carbon fibers is cut with a laser.
- the preform 1 is placed on the receiving jig 2, and laser cutting is advanced along a cutting line (cutting position 3) along the periphery of the preform 1.
- the receiving jig 2 is provided on a bed 5 made of corrugated plate on a base 4, and the preform 1 is placed on the receiving jig 2.
- the preform 1 is partially received by a receiving jig 2, and receiving jigs 2a and 2b are positioned on both sides of the cutting position. At the support position by the receiving jig 2b, the preform 1 is gripped from both sides using the pressing jig 6.
- Laser light 8 for cutting is irradiated from the laser head 7 toward the cutting position 3, and the head 7 or the base 4 is moved, so that laser cutting processing proceeds along the cutting line shown in FIG.
- the cutting position 3 is set to a position where the preform 1 is not in contact with the receiving jig 2 (position between the receiving jigs 2a and 2b).
- the laser beam 8 irradiated from the laser head 7 is introduced into the head 7 through the optical fiber 9, condensed in a state where the focal length is matched with the cutting portion in the thickness direction of the preform 1, and is subjected to cutting.
- cooling water is circulated through the cooling water going line 10 and the cooling water return line 11 in order to suppress overheating of the head 7.
- an inert gas for example, nitrogen gas supplied from the inert gas supply line 13 passes through the head 7.
- the laser beam is ejected toward the cutting position 3 in a coaxial state with the irradiation laser beam 8.
- the laser head 7 is provided with a trumpet-shaped suction case 14 that extends downward, and the scissors 12 that have risen from the cutting position 3 are collected in the suction case 14 and sucked by the vacuum pump 15 or the like.
- the apparatus is adapted to be removed by suction through the suction line 16.
- FIG. 2 illustrates various forms when a preform as a carbon fiber substrate is received by a jig in the present invention.
- the preform 21 is received by the plurality of strip-shaped receiving jigs 22 as described above, and a cutting position is set between the receiving jigs 22.
- the preform 21 is received by a plurality of receiving jigs 23 erected in a pin shape, and the contact area is reduced in order to suppress heat dissipation by receiving the preform 21 in contact with dots.
- FIG. 2 illustrates various forms when a preform as a carbon fiber substrate is received by a jig in the present invention.
- the preform 21 is received by the plurality of strip-shaped receiving jigs 22 as described above, and a cutting position is set between the receiving jigs 22.
- the preform 21 is received by a plurality of receiving jigs 23 erected in a pin shape, and the contact area is reduced in order to suppress heat diss
- the preform 21 is received by a receiving jig 24 made of a corrugated plate having a zigzag cross section, and the contact area is reduced in order to suppress heat dissipation by receiving the preform 21 in a linear contact. Has been reduced.
- a plurality of strip-shaped receiving jigs 22 and a receiving jig 24 made of corrugated plates are combined, and the preform 21 is received by the plurality of strip-shaped receiving jigs 22.
- the receiving jig 24 made of corrugated plates is not a jig that directly receives the preform 21 but functions as a bed as shown in FIG.
- this bed By making this bed into a corrugated plate structure, heat escape to the bed and base side is suppressed through the receiving jig 22, and heat dissipation in laser cutting is suppressed.
- the preform 21 is received by a cross-shaped or lattice-shaped receiving jig 25, and the contact area is also reduced to suppress heat dissipation.
- FIG. 3 shows a case where the cutting position is composed of a plurality of cutting positions 31a and 31b that are separated from each other as compared with the embodiment shown in FIG. 1, and the receiving of the preform 1 is performed according to the cutting positions 31a and 31b.
- a contact portion 33 and a non-contact portion 34 with the jig 32 are appropriately set. In this way, it is possible to appropriately set the division form of the receiving jig 32 according to the position and number of the preform 1 to be cut. Since other configurations are the same as those shown in FIG. 1, the same reference numerals as those in FIG.
- 4 (A) to (D) exemplify a form adopting a heat insulating material configuration as compared with the form shown in FIGS. 2 (A) to (D).
- the preform 21 is received by a receiving jig 41 having the same shape as that shown in FIG. 2A, but is the receiving jig 41 itself made of a heat insulating material?
- a layer of a heat insulating material 42 is provided on the surface of the receiving jig 41.
- the preform 21 is received by a plurality of receiving jigs 43 erected in a pin shape having the same shape as that shown in FIG.
- a surface heat insulating material 44 is provided. By interposing such a surface heat insulating material 44, heat dissipation in laser cutting is more efficiently suppressed.
- the preform 21 is received by a receiving jig 45 made of a corrugated plate having a zigzag shape in the same cross section as shown in FIG.
- the heat insulating material 46 at the apex portion of the zigzag shape that is a contact portion with the reform 21, heat dissipation in the laser cutting process is more efficiently suppressed.
- FIG. 4C the preform 21 is received by a receiving jig 45 made of a corrugated plate having a zigzag shape in the same cross section as shown in FIG.
- FIG. 4 (D) a combination of a plurality of strip-like receiving jigs 47 and receiving jigs 48 made of corrugated plates is used.
- a heat insulating material 49 By disposing a heat insulating material 49 on the contact portion side of the belt-shaped receiving jig 47 that comes into contact with the reform 21, heat dissipation in laser cutting processing is more efficiently suppressed.
- the method of interposing the heat insulating material is a form in which the heat insulating function among the functions required of the receiving jig is separated into functions, for example, the skeleton of the receiving jig is a metal material, and a thin heat insulating layer on the surface layer If a glass fiber fabric or the like is attached, the positioning of the preform can be made compatible with the heat insulation during processing, and this can be preferably used.
- the cutting position in the thickness direction of the base material needs to be within an appropriate focal length range of the laser.
- the bending at the cutting position of the carbon fiber base material must be suppressed as small as possible.
- attention must be paid to the amount of bending of the base material.
- FIG. 5 exemplifies a technique for suppressing the deformation of the preform as a carbon fiber base material.
- FIG. 5A shows a form in which the receiving jigs 53 are arranged on both sides of the cutting position 52 of the preform 51.
- the laser beam 56 has a certain focal length, and the vicinity of the focal point becomes a cuttable range 57 in the thickness direction of the preform 51. If a portion to be cut in the thickness direction of the preform 51 is removed from the cuttable range 57 due to bending or the like, there is a possibility that a defective cutting portion or a portion that is not cut occurs.
- the receiving jigs 53 In order to prevent such undesirable bending of the preform 51, the receiving jigs 53 must be arranged on both sides of the cutting position 52, and the distance between the jigs 53 must be set appropriately. It is necessary to set a relatively small interval for the preform 51 which is easily bent. In order to hold the preform 51 more reliably by the receiving jigs 53 on both sides, it is preferable to provide a suction mechanism 58 that can adsorb the preform 51 as shown in the figure. More preferably, a suction mechanism 58 is provided on each of the receiving jigs 53 on both sides as shown in the drawing. However, when it is desired to partially cut the preform in the thickness direction, the partially cut preform can be manufactured by removing the focus.
- At least one of the receiving jigs 63 provided on both sides of the cutting position 62 of the preform 61 is gripped from both sides, thereby It is preferable to keep the preform 61 within the cuttable range 68 so as to keep the deflection of the preform 61 small.
- the thickness of the cut portion is preferably smaller than the cavity thickness 144, more preferably 0.05 mm or more.
- the film-like graphitized portion 147 having a specific property is generated on the cut end face to prevent the carbon fiber fraying on the cut end face (described in Japanese Patent Application No. 2009-285882 earlier).
- the film-like graphitization part 147 is not adversely affected during mold closing.
- FIG. 7B when the plate thickness 149 of the actual cut portion of the preform 148 is thicker than the cavity thickness 144, a film-like graphitized portion having specific properties generated on the cut end face when the mold is closed. 150 may be adversely affected (for example, the film-like graphitized portion 150 may be damaged or destroyed as in the illustrated example).
- FIG. 7C when the cavity thickness 144 and the plate thickness 152 of the actual cut portion of the preform 151 are substantially the same, the upper and lower molds 141 and 142 are used to form the film during clamping. The resin injected by RTM molding does not rotate between the film-shaped graphitized part 153 and the mold, and the resin cracks starting from the position of the film-shaped graphitized part 153 May be easier.
- the laser beam 71 is guided through the optical fiber 73 into the laser head 72 that irradiates the laser beam 71, and the inert gas supply line 74 is used to prevent nitrogen gas or the like.
- the inert gas supply line 74 is used to prevent nitrogen gas or the like.
- the pressure (atmospheric pressure) in the laser head 81 is maintained at a higher pressure than the outside of the laser head 81 as shown in FIG. It is preferable.
- a wrinkle 84 is generated by sublimation of the preform 82 constituting material, and the wrinkle 84 may rise and come up to the irradiation port side of the laser head 81. If the inside of the head is kept in a high pressure state as described above, the intrusion of the collar 84 into the head 81 can be prevented.
- the inert gas is introduced into the laser head 86 through the inert gas supply line 74 in the same manner as shown in FIG.
- the inert gas 76 may be jetted toward the cutting position of the preform 82 together with the irradiation of the laser beam 83. In this way, it is possible to suppress the penetration of the flange 84 into the laser head 86 and prevent the head 86 from being clogged.
- the soot generated as described above is jetted toward the preform 82 along with the irradiation of the laser beam 83 with the inert gas 76 supplied from the inert gas supply line 74.
- Intrusion into the laser head 86 can be prevented, but on the other hand, there is a possibility that the spear 84 may be scattered around the cutting position together with the flow of the injected inert gas 76.
- a suction skirt 91 is attached to the lower part of the laser head 86, and the collar 84 is collected in the suction skirt 91, and a vacuum pump is connected via a suction line 92 communicating with the skirt 91. It is also possible to suck and remove the flange 84 by 93.
- the laser beam 83 penetrates the preform 82 in the thickness direction and at the same time, the inert gas 76 is also transformed into the preform. It may be sprayed to the back side of 82.
- suction removing means may be provided on the back side as shown in FIG. preferable.
- the carbon fiber base material to be cut it is possible to adopt a laminate structure in which the fabric-like materials to which particulate resin is applied at least on one side are bonded and integrated through the resin. That is, as shown in FIG. 11, a state in which the particulate resin 102 for adhesion is scattered on the carbon fiber cloth 101 (the illustrated example is a unidirectional carbon fiber woven fabric) is shown. Can be formed by stacking and integrating. Such a laminate is effective for maintaining the shaped shape well when, for example, the preform is shaped into a three-dimensional shape.
- the articulated robot 111 transports a three-dimensional preform 112 and installs it on a processing table 115 of a cutting processing apparatus 114 using a laser beam 113, a predetermined three-dimensional shape is obtained.
- the laser beam 113 is emitted from a laser head 117 attached to the tip of another articulated robot 116, and the laser beam is guided to the laser head 117 from an optical fiber 118 and is vacuumed.
- a suction line 120 by the pump 119 is connected to the head 117.
- the suction line 120 by the vacuum pump 119 is sucked through the filter 121, and a drain 122 is accumulated on the lower side thereof.
- the drain 122 is appropriately discharged by opening and closing the valve 123.
- a compressed air line 124 is connected to the processing table 115 for demolding and cleaning.
- the vacuum suction line 125 is connected to the vacuum clamp of the three-dimensional preform 112, the above-described scissor suction removal, suction removal of facets generated during laser cutting, and the like.
- the suction line 125 is provided with the drain line 126 as described above, a three-way solenoid valve 127 for switching the processing direction, a filter 128, and the like.
- the articulated robot 116 is passed through an inert gas supply line 129, a cooling water line 130, a cooling water return line 131, and the like.
- the method for cutting a carbon fiber substrate according to the present invention can be applied to cutting any substrate or preform made of a carbon fiber fabric.
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Abstract
Description
図1は、本発明の一実施態様に係る炭素繊維基材の切断方法を示しており、とくに、炭素繊維を含む布帛状物の積層体からなるプリフォームの周縁部をレーザーで切断する例を示している。図1(A)に示すように、プリフォーム1が受け治具2上に載置され、プリフォーム1の周縁に沿う切断ライン(切断位置3)に沿って、レーザーによる切断が進められる。図1(B)に示すように、本実施態様では、受け治具2は、ベース4上の波板からなるベッド5上に設けられ、この受け治具2上にプリフォーム1が載置される。プリフォーム1は、受け治具2で部分的に受けられており、切断位置の両側に受け治具2a、2bが位置している。受け治具2bによる支持位置では、押さえ治具6を用いて、プリフォーム1は両面側から把持されている。
2、2a、2b、22、23、24、25、32、41、43、45、47、48、53、63、69、94 受け治具
3、31a、31b、52、62 切断位置
4 ベース
5、95 ベッド
6 押さえ治具
7、55、64、72、81、86、117 レーザーヘッド
8、56、71、83、113 レーザー光
9、54、73、118 光ファイバ
10、130 冷却水行きライン
11、131 冷却水戻りライン
12、84、85 煤
13、74、129 不活性ガス供給ライン
14 吸引ケース
15、93、97、119 真空ポンプ
16、92、96、120、125 吸引ライン
33 接触部
34 非接触部
42、44、46、49 断熱材
57、68 切断可能範囲
58 吸引機構
59a 垂れ
59b 層間剥離
60a、60b 切断されない部分
65、76 不活性ガス
66,67 撓み
91 吸引用スカート
101 炭素繊維布帛
102 粒子状の樹脂
111、116 多関節ロボット
112 三次元プリフォーム
114 切断処理装置
115 処理台
121、128 フィルタ
122 ドレン
123 バルブ
124 圧空ライン
126 ドレンライン
127 三方電磁弁
141 上型
142 下型
143 キャビティ
144 キャビティ厚み
145、148、151 プリフォーム
146、149、152 切断部の板厚
147、150、153 膜状の黒鉛化部
Claims (13)
- 少なくとも炭素繊維を含む布帛状物から構成した炭素繊維基材をレーザーで切断するに際し、レーザーによる基材切断時の状態の目標状態からの変動を抑制または防止可能な初期条件に設定して基材を切断することを特徴とする、炭素繊維基材の切断方法。
- 炭素繊維基材を受け治具上に載置してレーザーで切断するに際し、前記基材を前記受け治具で部分的に受ける、請求項1に記載の炭素繊維基材の切断方法。
- 基材の切断位置を、基材が前記受け治具に接触していない位置に設定する、請求項2に記載の炭素繊維基材の切断方法。
- 受け治具の基材に対する接触支持部を、帯状、線状または点状の形態に設定する、請求項3に記載の炭素繊維基材の切断方法。
- 受け治具の基材への接触表面を、少なくとも断熱性を有する材料から形成する、請求項1~4のいずれかに記載の炭素繊維基材の切断方法。
- 炭素繊維基材を受け治具上に載置して基材をレーザーで切断するに際し、切断位置の両側で受け治具により基材を支持する、請求項1~5のいずれかに記載の炭素繊維基材の切断方法。
- 切断位置の両側の基材の支持部の少なくとも一方の部位で、基材を両面側から把持する、請求項6に記載の炭素繊維基材の切断方法。
- レーザーを照射するレーザーヘッド内からのレーザー照射とともに気体を噴射する、請求項1~7のいずれかに記載の炭素繊維基材の切断方法。
- 気体を照射レーザーと同軸に噴射する、請求項8に記載の炭素繊維基材の切断方法。
- レーザーヘッド内をヘッド外よりも高圧状態に維持する、請求項8または9に記載の炭素繊維基材の切断方法。
- レーザーヘッドに吸引手段を設け、基材切断時に発生する煤を吸引する、請求項8~10のいずれかに記載の炭素繊維基材の切断方法。
- 切断される炭素繊維基材が、粒子状の樹脂が少なくとも片面に付与された布帛状物同士を前記樹脂を介して接着一体化した積層体からなる、請求項1~11のいずれかに記載の炭素繊維基材の切断方法。
- 切断される炭素繊維基材が、予め所定形状に賦形されたプリフォームからなる、請求項1~12のいずれかに記載の炭素繊維基材の切断方法。
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KR1020127026815A KR20130016279A (ko) | 2010-03-19 | 2010-12-14 | 탄소 섬유 기재의 절단 방법 |
JP2011502172A JP5709059B2 (ja) | 2010-03-19 | 2010-12-14 | 炭素繊維基材の切断方法 |
CN201080064473.8A CN102812175B (zh) | 2010-03-19 | 2010-12-14 | 碳纤维基材的切断方法 |
EP10847998.1A EP2549010A4 (en) | 2010-03-19 | 2010-12-14 | Method for cutting carbon fiber base |
AU2010348477A AU2010348477B2 (en) | 2010-03-19 | 2010-12-14 | Method for cutting carbon fiber base |
US13/635,721 US9050689B2 (en) | 2010-03-19 | 2010-12-14 | Method for cutting carbon fiber substrate |
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EP (1) | EP2549010A4 (ja) |
JP (1) | JP5709059B2 (ja) |
KR (1) | KR20130016279A (ja) |
CN (1) | CN102812175B (ja) |
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Also Published As
Publication number | Publication date |
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KR20130016279A (ko) | 2013-02-14 |
AU2010348477B2 (en) | 2015-04-09 |
JP5709059B2 (ja) | 2015-04-30 |
CN102812175A (zh) | 2012-12-05 |
AU2010348477A1 (en) | 2012-10-11 |
CN102812175B (zh) | 2015-12-16 |
US9050689B2 (en) | 2015-06-09 |
JPWO2011114592A1 (ja) | 2013-06-27 |
EP2549010A4 (en) | 2017-08-02 |
EP2549010A1 (en) | 2013-01-23 |
US20130001206A1 (en) | 2013-01-03 |
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