JP2015009242A - Curved long material manufacturing method, and curved long material manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curved long material manufacturing method and a curved long material manufacturing apparatus.SOLUTION: A vehicular curved door sash manufacturing apparatus 1 that is a curved long material manufacturing apparatus manufactures a vehicular curved door sash that is a curved long material by performing the movement of a pressure sending roller by a horizontal cylinder 60a, a vertical cylinder 50a, and a transverse direction cylinder 75 and by performing the inclination of the roller shaft of the pressure sending roller by a first inclining motor and a second inclining motor thereby to deform a straight door sash base material that is a straight base material along a curved mold face.

Description

  The present invention relates to a method for manufacturing a long metal curved material (for example, a curved door sash for a vehicle) using a bending metal mold, and a long curved material manufacturing apparatus for manufacturing the long curved material. .

  It is well known that a stretch bender machine is used to bend a metal linear base material to be processed (see, for example, Patent Document 1). This stretch bender machine has a bending mold on which a curved mold surface that is curved three-dimensionally is formed, and the straight base material is bent in close contact with the bending mold, so that a predetermined shape is obtained. A curved long material is obtained. Here, as a curved long material, for example, a curved door sash for a vehicle can be cited (see FIG. 8). This curved door sash for a vehicle includes a flange portion 101 having an exterior surface 100 exposed to the outside of the vehicle, a hollow wide portion 104 coupled to a main plate portion 102 rising from the back surface of the flange portion 101, and a main plate portion 102. A first groove portion 105 formed on one side surface into which the door-side weather strip is inserted and a second groove portion 106 formed on the other side surface of the main plate portion 102 into which the glass run is inserted are provided. Furthermore, based on the design of the vehicle, the predetermined portion has a shape that is three-dimensionally curved toward the second groove 106 (see, for example, Patent Document 2).

  Here, a general stretch bender machine for obtaining a curved door sash for a vehicle includes a work table to which a bending mold is attached, a movable connecting arm connected to a side surface of the work table, and a movable movable part. And a cylinder support column standing upward from the arm portion. This cylinder support column is configured to support the tension cylinder substantially horizontally and to hold one end of the straight door sash base material to be processed by a tension chuck connected to the tip of the tension cylinder. In such a configuration, first, one end of the straight door sash base material is held by a tension chuck, the other end is held by another chuck, and the processing start portion preset in the straight door sash base material is a curved type. Adhere to the surface. Then, while pulling the straight door sash base material from the state with the tension chuck, the tension chuck is turned around the mold. Then, the straight door sash base material is in close contact with the curved mold surface while being curved, and a vehicular curved door sash bent into a desired three-dimensional shape is obtained.

JP 2000-237825 A JP 2001-213167 A

  However, in the above-described stretch bender machine, when the straight door sash base material is curved, it is necessary to rotate the connecting movable arm part and to largely rotate the tension chuck together with the cylinder support column around the mold. Occurs. Accordingly, the unprocessed portion of the straight door sash base material also rotates around the mold. Further, the tension chuck moves up and down in order to make the object to be processed into a three-dimensional curved shape. Therefore, in the conventional configuration, it is necessary to secure a sufficient space around the mold for the unprocessed portion of the straight door sash base material, the connecting movable arm portion, the support column and the like to rotate and move up and down. There wasn't. Further, when the straight door sash base material to be processed becomes long, there is a problem that the apparatus is further increased in size as a whole. In addition, in the above configuration, in order to avoid the occurrence of wrinkles, unevenness, sink marks, skinnyness, etc., when trying to closely contact the side surface of the straight door sash base material with a curved surface that is curved three-dimensionally Therefore, it is necessary to further increase the complexity and precision of the mechanical structure such as the connecting movable arm portion. However, since this increases the cost, there is a limit in actually bringing the straight door sash base material and the curved surface into close contact with each other with high accuracy. In addition, a configuration is known in which a male mold and a female mold are matched to each other. However, since a pair of molds is required, there is a disadvantage that the apparatus is increased in size and costs are increased.

  Then, an object of this invention is to provide the manufacturing method of the bending elongate material which can eliminate the said problem, and a bending elongate material manufacturing apparatus.

  In the present invention, a metal linear base material to be processed is curved on a curved mold surface of a bending mold formed by forming a long curved mold surface which is three-dimensionally curved. In the method for manufacturing a curved long material, the one end of the straight base material is held by the holding means and the one end is bent. It is impossible to move relative to the metal mold, a processing start site in the vicinity of the one end of the preset straight base material is brought into close contact with the curved mold surface, and the side surface of the straight base material is continuously connected to the opposing curved mold surface. The linear preform is deformed following the curved surface, and the circumferential surface of the pressure feed roller is pressure-bonded to the side surface of the straight preform corresponding to the processing start site, A roller is placed on the bending die along the axial direction of the straight base material toward the other end of the straight base material. The pressure-feeding roller is moved relative to the bending die along at least one of two directions orthogonal to the axial direction of the linear base material and orthogonal to each other. And moving the roller shaft of the pressure roller relative to the mold for bending.

  In this configuration, the pressure roller is moved relative to and tilted relative to the bending mold and travels on the surface of the base material, so that the straight base material is sequentially bent on the surface of the bending mold. The curved mold surface is in close contact with the entire surface of the curved long material while maintaining the line contact between the straight base material and the mold surface while being appropriately pressed by the pressure feeding roller. . Thereby, since unnecessary force does not act on the deformation | transformation site | part of a linear preform | base_material, generation | occurrence | production of a wrinkle, an unevenness | corrugation, a sink, or a thin will be reduced.

  Further, the present invention provides a metal linear base material to be processed on a curved mold surface of a bending mold having a long curved mold surface that is three-dimensionally curved. In a curved long material manufacturing apparatus that obtains a curved long material bent into a predetermined three-dimensional shape by sequentially adhering while curving, holding one end of the straight base material, In contrast, a holding means for making one end of the linear base material relatively unmovable is provided, and a predetermined processing start site in the vicinity of one end of the linear base material is brought into close contact with the curved mold surface, and the straight line held by the holding means The side surface of the straight base material corresponding to the processing start site is formed by continuously matching the side surface of the base material with the opposing curved mold surface so that the straight preform is deformed following the curved mold surface. A pressure-feeding roller whose peripheral surface is pressure-bonded to the surface, and the pressure-feeding roller toward the other end of the linear base material. First moving means for moving relative to the bending die along the axial direction of the wire base material, and the pressure feeding roller along the direction orthogonal to the axial direction of the straight base material. A second moving means for moving relative to the bending die and a roller shaft of the pressure roller relative to the bending die in a first plane perpendicular to the axis of the straight base material; First tilting means for tilting, and second tilting means for tilting the roller shaft of the pressure-feeding roller relative to the bending die in a second plane perpendicular to the first plane. It is a bending elongate material manufacturing apparatus characterized by these.

  As described above, one end of the linear base material is held by the holding means so that the one end cannot be moved relative to the bending mold, the peripheral surface of the pressure roller is pressure-bonded to the processing start site, The side surface of the linear base material is moved by relatively moving and relatively tilting the pressure feeding roller with respect to the bending mold by the first moving means, the second moving means, the first tilting means, and the second tilting means. The straight base material can be deformed following the curved mold surface by continuously matching the curved mold surface of the facing bending mold. That is, the pressure roller is relatively moved and tilted relative to the bending mold, so that the linear base material is sequentially applied to the curved mold surface from the machining start site near the one end toward the other end. The curved surfaces are brought into close contact with each other, and the curved surface adheres accurately over the entire side surface of the curved long material. Thereby, since unnecessary force does not act on the deformed portion of the straight base material, it is possible to smoothly manufacture a long curved material with reduced generation of wrinkles, unevenness, sink marks, skinnyness, etc. Become.

  Further, in the above configuration, the pressure feeding roller is moved relative to the bending die along a direction orthogonal to an axial direction of the straight base material and a moving direction by the second moving means. A configuration including third moving means is proposed.

  Thereby, since the moving direction of the pressure feeding roller is added, the accuracy when the linear base material is in close contact with the curved surface is improved. Further, it is possible to manufacture a long curved material having a more complicated curved shape.

  Furthermore, a configuration is proposed in which two or more pressure feeding rollers are juxtaposed along the axial direction of the straight base material.

  As a result, the pressure-feeding rollers arranged side by side are sequentially moved and relatively tilted with respect to the bending mold, thereby increasing the pressure-bonding portions with respect to the base material and producing a highly accurate curved long material. It becomes possible.

  Moreover, the structure provided with the auxiliary | assistant roller which crimps | bonds the surface different from the surface which the said pressure feeding roller crimps | bonds of the said linear preform | base_material is proposed.

  As a result, as a whole, the number of press-bonded portions by the roller with respect to the base material increases, so that the straight base material comes into close contact with the curved surface more accurately, and the accuracy of the manufactured long curved material becomes higher.

  Alternatively, the pressure feeding roller may be a different diameter roller, and in addition to the circumferential surface of the pressure feeding roller, the side surface of the large diameter portion may be pressure bonded to the side surface of the linear base material.

  This makes it possible to manufacture a highly accurate curved long material without excessively increasing the number of rollers.

  In the method for producing a curved long material according to the present invention, one end of a straight base material is held by a holding means so that the one end cannot be moved relative to a bending die, and the periphery of the pressure roller is set at a processing start site. The surface is crimped, and the pressure roller is moved relative to and tilted relative to the bending die, so that the side surface of the straight base material is continuously opposed to the bending die surface of the bending die. Therefore, the curved base surface closely adheres to the entire surface of the long curved material. Thereby, even if it is a mold surface of a complicated shape, an unnecessary force does not act on the deformed portion of the straight base material, so that an effect of reducing the occurrence of wrinkles, unevenness, sink marks, skinnyness, etc. can be obtained. .

  Further, the apparatus for manufacturing a long curved material according to the present invention holds one end of a straight base material by a holding means so that the one end cannot be moved relative to a bending processing mold, and a pressure feeding roller is provided at a processing start site. The peripheral surface is pressure-bonded, and the pressure-feeding roller is relatively moved and tilted by the first moving means, the second moving means, the first tilting means, and the second tilting means with respect to the bending mold, Since the straight base material is continuously faced to the curved mold surface of the facing bending mold and the straight base material is deformed following the curved mold surface, the curved long material is formed. The curved surface adheres with high precision over the entire side surface. As a result, even if it is a mold surface with a complicated shape, unnecessary force does not act on the deformed part of the straight base material, so that the length of the curved line with reduced generation of wrinkles, irregularities, sink marks, skinnyness, etc. There is an effect that a material can be manufactured.

It is a perspective view of the curved door sash manufacturing apparatus for vehicles. It is a perspective view of the metal mold | die for bending process, (a), (b) is the figure seen from a mutually different direction. (A) is explanatory drawing which shows a 1st tilting means, (b) is explanatory drawing which shows a 2nd tilting means. It is a perspective view of a pressure-feed roller receiver, (a), (b), (c) is the figure seen from a mutually different direction. It is the perspective view which hold | maintained the linear door sash base material in the metal mold | die for bending, and crimped | bonded the pressure roller and auxiliary roller of a pressure roller receiver, (a), (b) is the figure seen from a mutually different direction. . It is the longitudinal cross-sectional view which pressure-bonded the pressure roller and auxiliary | assistant roller of the pressure roller receiver which hold | maintained the linear door sash base material to the metal mold | die for bending process. It is the longitudinal cross-sectional view which hold | maintained the linear door sash base material to the metal mold | die for bending, and pressure-bonded the pressure-feed roller of another form. It is an external appearance perspective view of the curved door sash for vehicles. It is a longitudinal cross-sectional view of a straight door sash base material.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a method for manufacturing a curved long material and a curved long material manufacturing apparatus according to the present invention will be described with reference to the accompanying drawings. In describing the embodiment, in order to facilitate understanding of the moving direction of the member, the x axis, the y axis, and the z axis orthogonal to each other are set, and each axis is also described in the accompanying drawings. Note that the present invention is not limited to the following embodiments, and can be appropriately changed in design without departing from the gist of the present invention.

  FIG. 8 shows a well-known curved curved vehicle door sash Y obtained by roll-forming a single metal plate, which has been well known. The vehicle curved door sash Y includes a flange portion 101 having an exterior surface 100 exposed to the outside of the vehicle, a main plate portion 102 standing up from the back surface of the flange portion 101, and a hollow portion 103 coupled to the main plate portion 102. And a hollow wide portion 104 including The hollow wide portion 104 is formed so as to be deviated to one side with respect to the main plate portion 102. Further, a first groove portion 105 into which a door-side weather strip (not shown) is fitted is formed on one side surface of the main plate portion 102 along the longitudinal direction. On the other hand, a second groove portion 106 into which a glass run (not shown) is inserted is formed on the side surface of the opposite main plate portion 102 along the longitudinal direction.

  The above-described curved door sash Y for a vehicle is manufactured by bending a substantially straight linear door sash base material X as shown in FIG. 9 three-dimensionally toward the second groove 106 side. The straight door sash base material X constitutes the straight base material according to the present invention. Moreover, the curved long material concerning this invention is comprised by the curved door sash Y for vehicles concerning a present Example.

  Next, the vehicle curved door sash manufacturing apparatus 1 for manufacturing the vehicle curved door sash Y will be described.

  As shown in FIG. 1, the vehicular curved door sash manufacturing apparatus 1 includes a base plate 11 fixed to a floor surface, and a pair of guide rails 3 are provided on the base plate 11. On the guide rail 3, a work table 10 is provided that can move in the left-right direction (y-axis direction) by the guide action of the guide rail 3.

  On the work table 10, a bending die 2 is fixed by a die fixing jig (not shown). A curved mold surface 22 is formed on the surface of the bending mold 2 (see FIG. 2). In the present embodiment, since the axis of the straight door sash base material X is set in the front-rear direction (x-axis direction) before processing, the bending mold 2 is positioned corresponding to that direction.

  The bending mold 2 will be described in more detail. As shown in FIGS. 2A and 2B, the bending mold 2 includes a mold base 23 on the upper surface of the mold base 23. A mold body 21 having 21a and side surfaces 21b is fixed. The upper surface 21a is uneven so that the surface of the straight door sash base material X on which the second groove portion 106 is formed is in contact. The unevenness and the side surface 21b formed on the upper surface 21a are curved into a three-dimensional shape to form a curved surface 22 as a whole.

  A holding surface 21c for holding one end of the straight door sash base material X by a holding means such as a clamp is formed at the end of the upper surface 21a of the mold body 21. The straight door sash base material X is held on the holding surface 21c, and the surface on which the second groove portion 106 is formed is opposed to the unevenness and the side surface 21b formed on the upper surface 21a of the mold body 21. Are arranged as follows.

  As shown in FIG. 1, a pair of vertical cylinder support columns 50 and 50 are erected on the front and rear of the work table 10 (on both sides in the x-axis direction). The vertical cylinder support column 50 is provided with a vertical cylinder 50a and a guide rail 50b.

  Further, a horizontal cylinder support 60 is bridged between the pair of vertical cylinder support columns 50 and 50. The horizontal cylinder support 60 is connected to the vertical cylinder 50a and is provided with a guide rail receiver 60c slidably connected to the guide rail 50b. When the vertical cylinder 50a operates, the horizontal cylinder support 60 moves in the vertical direction (z-axis direction) along the guide rail 50b.

  Further, the horizontal cylinder support 60 is provided with a horizontal cylinder 60a. A guide rail 60b is provided along the operating direction (x-axis direction) of the horizontal cylinder 60a.

  Further, a working member 70 is attached to the guide rail 60b, and the working member 70 can move in the horizontal direction (x-axis direction) along the guide rail 60b by the operation of the horizontal cylinder 60a. ing. Specifically, the working member 70 is connected to the horizontal cylinder 60a. Further, the working member 70 has a substrate portion 71 including a guide rail receiver 71a slidably connected to the guide rail 60b.

  In addition, a pressure feeding roller installation portion 72 including a pressure feeding roller 90 described later is attached to the substrate portion 71. Furthermore, a guide 71b is recessed along the front-rear direction in the substrate portion 71, and the pressure-feed roller installation portion 72 extends in the front-rear direction (x-axis) along the guide 71b with respect to the substrate portion 71. Direction). In the present embodiment, two of the pressure roller installation portions 72 are attached to the substrate portion 71 along the X-axis direction.

  The pressure roller installation portion 72 includes a fixing portion 73 for fixing to the substrate portion 71 and a pressure roller driving portion 74. The pressure roller driving section 74 is suspended via a horizontal cylinder 75 installed at the lower end of the fixed section 73. The fixed portion 73 and the pressure roller driving portion 74 are relatively movable along the lateral cylinder 75 (y-axis direction).

  Further, as shown in FIG. 3, a pressure roller receiver 80 is provided at the lower end of the pressure roller driving unit 74 via a vertical cylinder 78. The longitudinal cylinder 78 has a function of causing the pressure roller receiver 80 to protrude downward or retract upward from the pressure roller driving unit 74.

  4a to 4c, the pressure roller receiver 80 has a cylinder receiving hole 80a through which the longitudinal cylinder 78 is inserted, a pressure roller shaft hole 80b that pivotally supports the pressure roller 90, and Is provided.

  In addition, the pressure roller receiver 80 includes an auxiliary roller shaft hole 80c that pivotally supports the auxiliary roller 95, and a pressure roller 90 having a pressure roller shaft 90a that is pivotally supported by the pressure roller shaft hole 80b. And an auxiliary roller 95 having an auxiliary roller shaft 95a supported by the auxiliary roller shaft hole 80c. At the start of processing, the axial direction of the pressure roller 90 is the Y-axis direction, and the axial direction of the auxiliary roller 95 is the Z-axis direction.

  The pressure roller 90 is used to press the side surface of the straight door sash base material X with the hollow wide portion 104 and the second groove portion 106 against the curved mold surface 22 of the bending mold 2. It is set as a different diameter roller according to the shape of the side surface in which the 1st groove part 105 of the material X exists.

  The auxiliary roller 95 is set so as to contact the exterior surface 100 of the straight door sash base material X. This can prevent wrinkles, unevenness, sink marks, skinnyness, and the like from occurring without damaging the exterior surface 100.

  In the first moving means of the present invention, the pressure roller 90 is moved toward the other end of the linear door sash base material X along the axial direction (x-axis direction) of the linear door sash base material X. It is constituted by a horizontal cylinder 60a that moves relative to the bending die 2 or a mechanism that moves the pressure roller installation portion 72 in the front-rear direction (X-axis direction).

  Further, the second moving means of the present invention moves the pressure feeding roller 90 to the bending mold 2 along a direction (z-axis direction) orthogonal to the axial direction of the linear door sash base material X. The vertical cylinder 50a or the vertical cylinder 78 is relatively moved.

  Furthermore, the third moving means of the present invention is configured so that the pressure roller 90 is orthogonal to the axial direction (x-axis direction) of the linear door sash base material X and the moving direction (z-axis direction) of the second moving means. It is comprised by the mechanism which moves the horizontal direction cylinder 75 or the work table 10 along the guide rail 3 which moves relatively with respect to the said metal mold | die 2 for bending along the direction (y-axis direction) to do.

  Further, the pressure roller driving section 74 is provided with a first tilting motor 76 as a first tilting means and a second tilting motor 77 as a second tilting means.

  As shown in FIG. 3 a, the first tilting motor 76 is configured so that the roller shaft 90 a of the pressure roller 90 for processing the straight door sash base material X is perpendicular to the axis of the straight door sash base material X. It has a function of tilting relative to the bending die 2 in a plane (for example, yz plane). Further, as shown in FIG. 3b, the second tilting motor 77 causes the roller shaft 90a of the pressure feeding roller 90 to move to a second plane (for example, xy plane) orthogonal to the first plane (for example, yz plane). ) In the inside of the bending processing mold 2.

  Next, a method of manufacturing the vehicle curved door sash Y using the vehicle curved door sash manufacturing apparatus 1 will be described.

  As shown in FIGS. 5 and 6, first, the straight door sash base material X is disposed so that the first groove 105 faces the pressure roller 90 side, and one end of the straight door sash base material X is attached to the bending die 2. It is fixed to the holding surface 21c of the mold body 21 by holding means such as a clamp.

  Then, the peripheral surface of the pressure feeding roller 90 is pressure-bonded to the side surface of the straight door sash base material X corresponding to the processing start site. In this case, the pressure roller 90 is positioned by, for example, moving the work member 70 along the guide rail 60b by the horizontal cylinder 60a to determine the position in the x-axis direction and moving the work table 10 along the guide rail 3. To move the horizontal cylinder support 60 along the guide rail 50b by the vertical cylinder 50a to determine the position in the z-axis direction.

  Then, while maintaining the above-mentioned pressure-bonded state, the pressure feeding roller 90 is curved along the axial direction (x-axis direction) of the linear door sash base material X toward the other end of the linear door sash base material X. It is moved relative to the processing mold 2. The movement of the pressure roller 90 at this time can be performed by moving the pressure roller installation portion 72 along the guide 71 b with respect to the substrate portion 71.

  Further, the pressure feeding roller 90 moving along the x-axis direction is bent along the z-axis direction and the y-axis direction orthogonal to the axial direction (x-axis direction) of the linear door sash base material X. Move relative to the mold 2. The movement of the pressure roller 90 at this time can be performed by extending or retracting the pressure roller receiver 80 from the pressure roller driving unit 74 by expanding and contracting the longitudinal cylinder 78 in the z-axis direction. . In addition, the y-axis direction can be performed by moving the pressure roller driving unit 74 along the lateral cylinder 75 with respect to the fixed unit 73.

  Furthermore, the roller shaft 90a of the pressure feeding roller 90 is relatively tilted with respect to the bending die 2 with the above movement. The tilting of the roller shaft 90a of the pressure feeding roller 90 at this time is caused by the bending processing metal in a first plane (for example, yz plane) orthogonal to the axial direction (x-axis direction) of the linear door sash base material X. A first tilt relative to the mold 2 and a relative tilt relative to the bending mold 2 in a second plane (eg, xy plane) orthogonal to the first plane (eg, yz plane). The second tilting can be performed separately. That is, as shown in FIG. 3, the first tilting can be performed using the first tilting motor 76, and the second tilting can be performed using the second tilting motor 77. Can do.

  As described above, by moving the pressure feeding roller 90 and tilting the roller shaft 90a of the pressure feeding roller 90, the straight door sash base material X is bent while the bending die 2 is bent. A curved door sash Y for a vehicle that is brought into close contact with the mold surface 22 and bent into a predetermined three-dimensional shape including a twist can be manufactured. Note that the pressure-bonding force of the pressure roller 90 to the straight door sash base material X can be changed as appropriate by controlling the vertical cylinder 50a and the like.

Hereinafter, other embodiments will be described.
As shown in FIG. 7, by using the different diameter shape of the pressure roller, the side surface 901a of the large diameter portion 901 of the pressure roller 900 is pressure-bonded to the exterior surface 100 with which the auxiliary roller 95 is in contact. Also good. In this case, since the auxiliary roller 95 is unnecessary, there is an advantage that the number of parts is reduced.

  As the above-mentioned moving means and tilting means, known ones are preferably used, for example, using a belt or a rope instead of a cylinder.

  Further, for example, the apparatus can be simplified by omitting the lateral cylinder 75 that moves the pressure feeding roller 90 along the y-axis direction. Conversely, not only the pressure feeding roller 90 and auxiliary roller 95 but also a roller for stabilizing the relative position between the sending roller 90 and auxiliary roller 95 and the bending die 2 may be added.

  The dimensional shape of the bending die 2, the bending die surface 22, and the pressure feeding rollers 90 and 900 is appropriately set according to the dimensional shape of the curved long material to be manufactured.

  Further, each moving means and tilting means may be manually set individually, or all may be set by CNC (Computerized Numeric Control), and can be freely set according to manufacturing conditions. It can be set.

  Of course, the long curved material according to the present invention is not limited to a vehicle door sash. For example, the curved long material may be a metal sliding door rail or the like having a substantially U-shaped cross section, and can be naturally applied to any curved long material having an irregular cross section.

DESCRIPTION OF SYMBOLS 1 Vehicle door sash manufacturing apparatus 2 Curve processing metal mold | die 22 Curved surface 50a Vertical cylinder (2nd moving means)
60a Horizontal cylinder (first moving means)
75 Lateral cylinder (third moving means)
76 First tilting motor (first tilting means)
77 Second tilting motor (second tilting means)
78 Longitudinal cylinder (second moving means)
90,900 Pressure roller 95 Auxiliary roller 901 Large diameter portion 901a Side surface X Straight door sash base material Y Curved door sash for vehicle

Claims (6)

Sequentially sticking a metal straight base material, which is the object to be processed, to the curved mold surface of a bending mold formed by forming a long curved surface that is three-dimensionally curved. In the method for producing a long curved material, a curved long material bent into a predetermined three-dimensional shape is obtained.
One end of the straight base material is held by a holding means so that the one end cannot be moved relative to the bending die, and a processing start site near the one end of the preset straight base material is brought into close contact with the curved die surface. The side surface of the straight base material is continuously brought into contact with the opposing curved mold surface and the straight preform is deformed following the curved mold surface,
Pressure-bonding the peripheral surface of the pressure roller to the side surface of the straight base material corresponding to the processing start site,
While moving the pressure roller relative to the bending die along the axial direction of the straight base material toward the other end of the straight base material,
The pressure feeding roller is moved relative to the bending die along at least one of two directions orthogonal to the axial direction of the linear base material and orthogonal to each other;
And the manufacturing method of the bending elongate material characterized by making the roller axis | shaft of this pressure-feed roller relatively tilt with respect to this metal mold | die for a bending process. Sequentially sticking a metal straight base material, which is the object to be processed, to the curved mold surface of a bending mold formed by forming a long curved surface that is three-dimensionally curved. In the curved long material manufacturing apparatus, to obtain a curved long material bent into a predetermined three-dimensional shape,
A holding means for holding one end of the straight base material and making one end of the straight base material relatively unmovable with respect to the bending die, a machining start site in the vicinity of the preset one end of the straight base material Is in close contact with the curved mold surface, the side surfaces of the straight base material held by the holding means are continuously brought into contact with the opposing curved mold surface, and the straight base material is deformed following the curved mold surface. There,
A pressure-feeding roller whose peripheral surface is pressure-bonded to the side surface of the linear base material corresponding to the processing start site;
First moving means for moving the pressure roller relative to the bending die along the axial direction of the linear base material toward the other end of the linear base material;
Second moving means for moving the pressure roller relative to the bending die along a direction orthogonal to the axial direction of the straight base material;
First tilting means for tilting the roller shaft of the pressure feeding roller relative to the bending mold in a first plane perpendicular to the axis of the linear base material;
Second tilting means for tilting the roller shaft of the pressure feeding roller relative to the bending mold in a second plane orthogonal to the first plane;
An apparatus for producing a curved long material, comprising: 3. A third moving unit that moves the pressure feeding roller relative to the bending die along a direction orthogonal to an axial direction of the straight base material and a moving direction of the second moving unit. The apparatus for manufacturing a curved long material according to 2. The curved long material manufacturing apparatus according to claim 2 or 3, wherein two or more pressure feeding rollers are juxtaposed along the axial direction of the straight base material. The curved long material manufacturing apparatus of any one of Claims 2 thru | or 4 provided with the auxiliary | assistant roller which crimps | bonds the surface different from the surface which the said pressure feeding roller crimps | bonds of the said linear base material. The pressure feeding roller is a different diameter roller, and in addition to the peripheral surface of the pressure feeding roller, the side surface of the large diameter portion is also pressure-bonded to the side surface of the linear base material. The long elongate material manufacturing apparatus according to the item.

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