WO2006106622A1 - Dispositif et procédé de traitement elliptique de tube métallique et produit de tube métallique - Google Patents

Dispositif et procédé de traitement elliptique de tube métallique et produit de tube métallique Download PDF

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Publication number
WO2006106622A1
WO2006106622A1 PCT/JP2006/306136 JP2006306136W WO2006106622A1 WO 2006106622 A1 WO2006106622 A1 WO 2006106622A1 JP 2006306136 W JP2006306136 W JP 2006306136W WO 2006106622 A1 WO2006106622 A1 WO 2006106622A1
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WO
WIPO (PCT)
Prior art keywords
metal tube
pressurizing
flattening
metal
tube
Prior art date
Application number
PCT/JP2006/306136
Other languages
English (en)
Japanese (ja)
Inventor
Yoshihide Fujita
Fumio Kanno
Atsushi Yamanaka
Toru Yamanaka
Takao Minagawa
Original Assignee
Infec Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Infec Corporation filed Critical Infec Corporation
Priority to EP06730084A priority Critical patent/EP1864725A1/fr
Priority to JP2007512512A priority patent/JP4418838B2/ja
Publication of WO2006106622A1 publication Critical patent/WO2006106622A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/025—Stamping using rigid devices or tools for tubular articles

Definitions

  • the present invention relates to an apparatus and method for flattening a metal tube having a circular vertical cross section with respect to the tube center axis with a press die, and a metal tube product, for example, a brake for a four-wheel vehicle. It can be used to manufacture pedal arms, suspension arms, main frames of motorcycles, etc. by flattening metal pipes. Background art
  • Fig. 22 shows a case where a metal pipe 200 having a circular vertical cross section with respect to the pipe center axis is flattened with a press device having two press dies having a flat pressing surface.
  • the upper die 210 as one press die moves up and down relative to the lower die 211 as the other press die fixedly set at a position facing the upper die 210 in the vertical direction.
  • the surfaces of the upper mold 210 and the lower mold 211 facing the metal pipe 200 are flat surfaces 210A and 211A.
  • the metal pipe is lowered by lowering the upper mold 210 force S and the lower mold 211.
  • the two-dot chain lines 212 and 213 in FIG. 22 indicate the relative positions of the flat surfaces 210A and 211A with respect to the metal tube 200 when the metal tube 200 is flattened to a predetermined thickness by the upper and lower molds 210 and 211. Show me!
  • the circumferential length of the portion 200A above the two-dot chain line 212 in the metal tube 200 and the circumferential length of the portion 200B below the two-dot chain line 213 are those on the flat surfaces 210A and 211A.
  • the upper portion 20OA and the upper portion 20OA are in contact with each other.
  • a load in the compression direction indicated by the arrow in FIG. 23 is generated in the lower portion 200B. Therefore, in the middle of the flattening force of the metal tube 200, the upper portion 200A and the lower portion 200B are recessed inwardly of the metal tube 200 due to buckling of these portions 200A and 200B. Part 200C is generated.
  • Patent Documents 1 and 2 there is a technique for forming a metal tube into a predetermined cross-sectional shape. It is shown.
  • the technology of Patent Document 1 is a bulging process in which a metal pipe is filled with a pressure fluid and the metal tube is molded into a predetermined cross-sectional shape by the pressure.
  • the technology of Patent Document 2 is formed by two press dies. A core member is inserted into the inside of the metal tube, and the metal tube is formed into a predetermined cross-sectional shape by the core member.
  • Patent Document 1 JP-A-11-333526
  • Patent Document 2 JP 2002-86217
  • pressure fluid is a main technical element
  • a core member is a main technical element. If an attempt is made to flatten a metal tube using the techniques of Patent Documents 1 and 2, these technical elements increase the manufacturing cost of the entire device and the flattening cost of the metal tube. For this reason, to develop a technology that can flatten metal pipes without the formation of recesses by using only two press dies such as the upper and lower dies, or using the two press dies as the main technical element. Is required.
  • An object of the present invention is to flatten a metal tube without generating a recess by using only two press dies such as an upper die and the like, or using two press dies as main technical elements. It is to provide an apparatus and method that can be used, and a metal tube product.
  • the metal tube flattening apparatus has two press dies facing each other, and a metal tube having a circular vertical cross section with respect to the tube center axis is formed by the two press dies.
  • a metal tube flattening apparatus for flattening the metal tube by applying pressure at least one of the two press dies becomes a part of the surface of the metal tube.
  • a first pressurizing unit that pressurizes the first part toward the center of the metal tube, and pressurizing units on both sides in the circumferential direction of the metal tube with the first pressurizing unit interposed therebetween.
  • First force of the first part The second pressurizing part pressurizes the second part of the surface of the metal tube, which is displaced in the inner direction of the metal tube, by generating a pressurizing component toward the first part. It is characterized by having.
  • At least one of the two press dies is A first pressurizing part that pressurizes the first part that is a part of the surface of the metal tube toward the center of the metal tube, and a circle of the metal tube with the first pressurizing part in between It is a pressurizing part on both sides in the circumferential direction, and the first part force is applied to the second part of the surface of the metal tube, which is displaced inward of the metal tube, by generating a pressure component toward the first part side.
  • the first pressurizing unit pressurizes the first part of the metal tube toward the center of the metal tube, and the second pressurizing unit includes the metal tube.
  • the second part of the metal tube is directed toward the first part.
  • the second part of the metal tube that is pressurized by generating a pressurizing component and pressurized by the second pressurizing part in this way has the first part force as well as the metal pipe. Since this is a part of the surface of the metal tube that is displaced inwardly of the inside of the metal tube, a hollow portion that is recessed toward the inside of the metal tube is generated in the metal tube by the pressurizing component of the pressure of the second caloric pressure portion. Can be prevented.
  • the cross-sectional shape of the metal tube after the flattening work is obtained by making the surface facing the two press-type metal pipes into an arbitrary shape. It can be finished in any shape.
  • An example in which the surface facing the metal tube in the one pressing die has a surface of an arbitrary shape includes a curved concave surface having a radius of curvature larger than the vertical cross section of the metal tube. It is to be a surface.
  • the first pressure part and the second pressure part can be provided on the curved concave surface.
  • the curved concave surface may be a concave surface formed by a plurality of curvature radii or may be a concave surface formed by a plurality of curvature radii.
  • the surface facing the metal tube in the one press mold is a surface having an arbitrary shape is that the surface includes at least one flat surface.
  • one of the first pressurizing unit and the second pressurizing unit can be provided on the one flat surface.
  • the other pressurizing part may be provided on a curved concave surface formed on the one press die, which may be provided on another flat surface formed on the one press die.
  • the first pressurizing unit and the second pressurizing unit may be provided in only one of the two press dies, or may be provided in both of the two press dies. .
  • the surface of the remaining press dies facing the metal tube is, for example,
  • the metal pipe having a circular vertical cross-section with respect to the pipe center axis can be formed of a concave concave surface having the same radius of curvature as the vertical cross-section of the metal pipe.
  • the sizes of the pressurizing components generated by the second pressurizing units of the press dies are different. It may be the same or the same. If the size of these pressurizing components is the same, the cross-sectional shape of the flattened portion of each of the two press dies in the metal tube is made symmetrical to each other so that the metal tube is flattened. Can be processed.
  • the metal tube flattening apparatus according to the present invention is also applicable to the case where the two press dies are molds for bending the metal tube while flattening the metal tube. Can be applied.
  • the pressurizing part is a pressurizing part for pressurizing the non-bent caulking part without bending the metal pipe, and at least of the two press molds, the metal pipe compressed by bending is used.
  • the fourth part of the surface of the metal tube which is displaced inward of the metal tube, is directed toward the third part.
  • a fourth pressurizing unit that generates and pressurizes the pressurizing component, and the pressurizing component of the pressurizing force of the fourth pressurizing unit is supplied to the second pressurizing unit. Make the pressure larger than the pressure component.
  • At least the press mold that faces the compression side of the metal tube compressed by the bending cage becomes a part of the surface of the metal tube as described above.
  • a third pressurizing part that pressurizes three parts toward the center of the metal tube, and a pressurizing part on both sides in the circumferential direction of the metal tube with the third pressurizing part interposed therebetween,
  • a fourth pressurizing part that pressurizes the fourth part of the surface of the metal tube, which is displaced from the inner side of the metal pipe, by generating a pressurizing component directed toward the third part.
  • the pressure component of the pressurizing force of the fourth pressurizing part is set to be larger than the pressurizing component of the pressurizing force of the second pressurizing part.
  • the metal tube including this bent portion can be flattened while preventing the indentation from occurring inside the tube.
  • the third pressurizing part and the fourth pressurizing part are provided on the press mold facing at least the compression side of the metal tube compressed by the bending cage among the two press molds.
  • the surface facing the bending calorie portion of the metal tube in the press die facing the compression side of the metal tube compressed by bending is provided with a third pressure part and a fourth pressure part.
  • the facing surface can be a surface of any shape.
  • this surface a surface including a curved concave surface having a larger radius of curvature than the vertical cross section of the metal tube.
  • the third pressure part and the fourth pressure part can be provided on the curved concave surface.
  • the curved concave surface may be a concave surface with a single curvature radius or a concave surface formed by combining a plurality of surfaces with a plurality of curvature radii.
  • Another example of the surface provided with the third pressure portion and the fourth pressure portion is to make this surface a surface including at least one flat surface.
  • one of the third pressurizing part and the fourth pressurizing part can be provided on this one flat surface.
  • the other pressurizing part may be provided on a curved concave surface formed on this press die, which may be provided on another flat surface formed on the press die facing the compression side of the metal tube compressed by bending.
  • the third pressurizing part and the fourth pressurizing part may be provided only in the press die that faces the compression side of the metal tube compressed by the bending cage, of the two press dies. It may be provided on both of the two press dies.
  • the surface facing the bent portion of the metal tube in the remaining press mold may be perpendicular to the tube center axis. It can be formed of a curved concave surface having the same radius of curvature as this vertical cross section of the circular metal tube.
  • the magnitude of the pressurizing component of the pressurizing force of the fourth pressurizing unit of these press molds May be different or the same. If these pressure components have the same size, the cross-sectional shapes of the flattened portions of the two press dies in the bending calorie portion of the metal tube are made symmetrical to each other.
  • the metal tube can be flattened.
  • one end surface of the metal tube in the tube center axis direction abuts, and this one end surface is moved outward in the tube center axis direction by the contact.
  • Each surface of the two press dies facing the outer peripheral surface of the other end portion in the tube center axis direction of the metal tube has the other end portion whose vertical section with respect to the tube center axis is the circular shape.
  • the outer peripheral surface of the other end at the end of the flattening operation of the metal tube by the two press dies is surrounded by these curved concave surfaces. May be.
  • the total length of the metal tube is the tube center axis because of the surplus material of the metal tube generated by the flattening process.
  • the extension of the entire length of the metal tube is the other in the tube center axis direction. It occurs as an extension to the side.
  • each of the two press dies facing the outer peripheral surface of the other end portion in the tube center axis direction of the metal tube Is formed by a curved concave surface having the same radius of curvature as the other end of which the vertical cross-section with respect to the tube center axis is circular, and at the end of flattening of the metal tube by the two press dies
  • the outer peripheral surface of the other end is surrounded by these curved concave surfaces, the other end is not flattened by the two press dies.
  • At least one press die of the two press dies is formed including a die body and a pressure die in which at least part of the die body is embedded
  • the end face movement restricting portion may be a rising wall formed in the mold main body in order to embed at least a part of the pressure mold.
  • the end face movement restricting portion may be formed by using a rising wall portion such as a recess or a through hole formed in the die body in order to embed at least a part of the pressurizing die.
  • the flattening apparatus for a metal pipe is configured such that when the metal pipe is flattened by the two press dies, the metal pipe is metallized from one end in the pipe central axis direction of the metal pipe.
  • the cross-sectional shape of the metal tube accurately corresponds to the shape of the core member by the pressing action of the two press dies in the length range in which the core member is inserted out of the total length of the metal tube. It can be formed into a shaped shape.
  • the length range in which the core member is not inserted out of the total length of the metal tube can be flattened by the two press dies. Therefore, the flattening apparatus includes the two flattening apparatuses.
  • the press mold is the main technical element, and the core member is an accompanying technical element.
  • one of the two press dies is used for drilling a metal tube.
  • At least one punch member may be provided, and a guide hole for guiding the punch member may be formed in the core member.
  • the core member can also be used as a guide member for guiding a punch member when drilling a metal tube.
  • the metal tube flattening method according to the present invention is such that the vertical cross section with respect to the tube center axis is circular! /, And the metal tube is pressed by two press dies facing each other.
  • the two press dies are used to force the first part that is a part of the surface of the metal tube toward the center of the metal tube.
  • the first pressurizing step for pressurizing the first part, which is part of the surface of the metal tube by two press dies, toward the center of the metal tube
  • the second part on the surface of the metal tube which is a part on both sides in the circumferential direction of the metal pipe, with respect to the first part by at least one of the two press dies
  • a second pressurizing step is performed to pressurize by generating a pressurizing component directed toward the first part, and the second part is the first part force of the metal tube shifted inward of the metal tube.
  • the metal component is prevented from being formed in the metal tube by the pressurizing component of the pressurizing force acting on the second pressurizing unit, while the concave portion recessed to the inside of the metal tube is prevented. Can be flattened.
  • the core member is moved from one end in the tube center axis direction of the metal tube to the inside of the metal tube to the middle of the entire length of the metal tube. There should be a core member insertion process for insertion.
  • a punch that is arranged in at least one of the two press dies and is guided by a guide hole formed in the core member. You may provide the drilling process for making a hole in a metal pipe with a member.
  • the metal tube product according to the present invention is manufactured by the apparatus or method according to the present invention described above.
  • the present invention described above is the entire length of the metal tube, that is, the entire length of the metal tube. This can be applied to both the case where the body is flattened and the case where a part of the length of the metal tube is flattened. Also, before flattening the metal tube, bending, expanding the diameter of the metal tube to increase the diameter of a part of the metal tube, or reducing the diameter of a part of the metal tube in the length direction Preliminary power checks such as a reduced diameter carriage may be performed.
  • the flattened metal tube may be a single tube, or may be a plurality of tubes with different diameters or the same diameter joined in series.
  • the metal pipe product can be used for any application.
  • An example of such an application is a brake pedal arm of a vehicle, another application is a suspension arm of a vehicle, and another application is a main frame of a motorcycle.
  • the metal pipe product according to the present invention is used as an arm for a brake pedal of a vehicle
  • the arm is formed by a flattened metal pipe with a hollow portion left inside. .
  • the hollow portion may be provided in only a part of the entire length of the metal tube which may be continuous over the entire length of the metal tube. In the latter case, the length of the entire length of the metal tube that is not a hollow portion is pushed by work performed after the flattening process, which may be crushed simultaneously with the flattening process. It may be crushed.
  • a metal pipe used as a brake pedal arm of a vehicle has a large dimension part having a large vertical dimension and a small dimension part having a small vertical dimension smaller than the large dimension part. It is preferable that a hole for horizontally inserting the pivot center axis of the brake pedal arm is formed in the dimension part.
  • the brake pedal arm is provided with a large dimension part having a large vertical dimension and a small dimension part having a small vertical dimension smaller than the large dimension part.
  • the two surfaces facing the left and right direction of the large dimension portion may be projecting surfaces that are curved outward and may protrude as flat surfaces that are parallel to each other.
  • the two surfaces facing the left and right direction of the large dimension portion are flat surfaces that are parallel to each other, the two surfaces are made to project by curving outward or the like. Since the dimension in the vertical direction of the large dimension portion can be increased as compared with the case, the section modulus of the large dimension portion can be increased.
  • the large dimension portion is inserted into the core inserted into the metal tube. Without using any members, it can be formed by a flattening cage using two press dies.
  • FIG. 1 is a cross-sectional view of a flattening apparatus showing upper and lower mold parts that are two press molds according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line S2-S2 of FIG.
  • FIG. 3 is a cross-sectional view showing a case where a metal tube is flattened in the upper and lower molds of FIG.
  • FIG. 4 is a view similar to FIG. 2 showing the second embodiment.
  • FIG. 5 is a view similar to FIG. 3 of the second embodiment.
  • FIG. 6 is a view similar to FIG. 1 showing a third embodiment in which the upper and lower molds are molds for bending metal pipes.
  • FIG. 7 is a cross-sectional view of the metal tube during flattening at the position S7-S7 in FIG. 6, which is the position of the non-bending portion of the metal tube.
  • FIG. 8 is a cross-sectional view of the metal tube during flattening at the position S8-S8 in FIG. 6, which is the position of the bent portion of the metal tube.
  • Fig. 9 is a view similar to Fig. 7 showing a fourth embodiment in which the upper and lower molds are molds for bending a metal tube, and the pressurizing surface of the pressurizing mold is formed of a plurality of flat surfaces. It is.
  • FIG. 10 is a view similar to FIG. 8 of the fourth embodiment.
  • FIG. 11 is a perspective view showing a metal tube used in the fifth embodiment before flattening.
  • FIG. 12 is a perspective view showing a state after the flattening force of the metal tube in FIG.
  • FIG. 13 is a cross-sectional view of the main part of the flattening apparatus showing the upper and lower mold parts that are two press molds according to the fifth embodiment.
  • FIG. 14 is a view taken in the direction of arrows S 14-S 14 in FIG.
  • FIG. 15 is a cross-sectional view of a principal part of a flattening device of a fifth embodiment after flattening a metal tube.
  • FIG. 16 is a view similar to FIG. 15 showing the sixth embodiment.
  • FIG. 17 is a plan view showing a brake pedal arm of a vehicle manufactured by a metal pipe product manufactured by the flattening apparatus of the sixth embodiment and a brake pedal attached to the arm. It is.
  • FIG. 18 is a side view showing the brake pedal arm and the brake pedal of FIG.
  • FIG. 19 is a sectional view taken along line S19—S19 in FIG.
  • FIG. 20 is a cross-sectional view taken along line S20—S20 in FIG.
  • FIG. 21 is a view similar to FIG. 20, showing a brake pedal arm according to another embodiment.
  • FIG. 22 is a cross-sectional view showing a state before pressurization when a metal tube is flattened by an upper and lower mold in which a pressurization surface is a flat surface.
  • FIG. 23 is a cross-sectional view showing a case where a metal tube is flattened with the upper and lower molds of FIG. Explanation of symbols
  • FIG. 1 is a cross-sectional view showing portions of upper and lower molds 10 and 13 of a press device that is a flattening device for a metal tube according to the first embodiment.
  • These upper and lower dies 10, 13 which are two press dies are the press dies, which are embedded in the mold bodies 11 and 14 and the recesses 11A and 14A formed in the mold bodies 11 and 14, respectively. 12 and 15.
  • the metal pipe 1 according to this embodiment is a straight pipe in which the pipe center axis N is straight and the same diameter is continuous over the entire length.
  • the metal tube 1 is a circular tube having a circular vertical cross section with respect to the tube center axis N as shown in FIG. 2 which is a cross-sectional view taken along line S2-S2 of FIG.
  • the surfaces of the upper and lower molds 10, 13 facing the metal tube 1, in other words, the pressurizing surfaces 12A, 15A for pressurizing the metal tube 1 are: These curved concave surfaces are arcuate surfaces and are formed with a radius of curvature larger than the radius of curvature of the circular vertical cross section of the metal tube 1. The radii of curvature of these pressing surfaces 12A and 15A are the same.
  • the metal tube 1 is set on the pressing surface 15A of the pressing mold 15 of the lower mold 13 when the upper and lower molds 10, 13 are opened, and the upper mold 10 is lowered.
  • the metal tube 1 is flattened by the pressurizing molds 12 and 15 as shown in FIG.
  • This flattening cache is first a part of the surface of the metal tube 1, and the force of the highest part 1A and the lowest part 1B in the horizontal center part of Figs. 1 part 1A, 1B is started by pressing toward the center of the metal tube 1 with the pressurizing surfaces 12A, 15A of the pressurizing dies 12, 15, and the upper die 10 is continuously lowered to 10, the second part 1C, which is the part of the surface of the metal tube 1 on both sides in the circumferential direction of the metal tube 1 with respect to the first part 1A, is pressed by the pressing surface 12A of the pressurizing die 12 and In the mold 13, the second part 1 ⁇ / b> D, which is a part on both sides in the circumferential direction of the metal pipe 1, is pressed against the first part 1 ⁇ / b> B by the pressurizing surface 15 ⁇ / b> A of the pressurizing mold 15.
  • the portion of the pressurizing surfaces 12A and 15A that generates the pressure F is a first pressurizing unit that pressurizes the first parts 1A and 1B of the metal tube 1 after the upper mold 10 starts to descend.
  • the portions of the pressure surfaces 12A and 15A that generate the pressure F on both sides of the metal tube 1 in the circumferential direction with the first pressure portions 1A and 1B interposed therebetween are as follows: Then metal
  • the lowering of the upper mold 10 progresses. Move to the position away from the first part 1A, 1B in the circumferential direction of the metal tube 1 from the first part 1A, 1B.
  • the circumferential length of the metal tube 1 pressurized with the pressurizing dies 12, 15 is the same as in FIG. Is longer than the length of the pressurizing surfaces 12A and 15A of the pressurizing dies 12 and 15 in contact with each other in the circumferential direction, so that the metal pipes 1 sandwiching the first portions 1A and 1B therebetween.
  • a load in the compressive direction is generated on both sides in the circumferential direction of the first portion 1A and IB.
  • the pressure F acts on the metal pipe 1 at the second parts 1C and 1D which are the parts on both sides in the circumferential direction of the metal pipe 1 with respect to the first parts 1A and 1B.
  • the pressurizing force F has a pressurizing component F toward the first parts 1A and 1B, and the second part
  • the parts 1C and 1D are the parts of the surface of the metal tube 1 shifted from the first parts 1A and 1B toward the inside of the metal pipe 1, the pressurizing component F of the pressure F acting on the second part 1C By the gold
  • the first part 1B is pushed down to the pressure surface 15A side. For this reason, the metal tube 1 is flattened without generating a hollow portion that is recessed toward the inside of the metal tube 1.
  • the pressing molds 12A and 15A that pressurize the metal tube 1 are curved concave surfaces on the upper and lower molds 10, 13 that are two press molds facing each other vertically.
  • the metal tube 1 can be flattened to a predetermined thickness without the formation of a dent, and the press device does not need to be equipped with special members or equipment. Therefore, it is possible to reduce the manufacturing cost of the entire pressing device and the flattening cost of the metal tube 1
  • the flattening work for one metal tube 1 is completed only by moving the upper die 10 up and down once relative to the lower die 13, so that the flattening work can be performed efficiently.
  • a large number of metal pipes 1 can be processed in a short time.
  • the pressurizing surfaces 12A and 15A of the pressurizing dies 12 and 15 arranged separately in the upper and lower molds 10 and 13 are curved concave surfaces having the same radius of curvature.
  • the upper and lower parts of the tube center axis N are symmetrical with the parts formed by the pressure surfaces 12A and 15A.
  • the shape can be flattened.
  • the upper and lower molds 20, 23 show the upper and lower molds 20, 23 according to the second embodiment.
  • the upper and lower molds 20, 23 include mold bodies 21, 24, and pressurization molds 22, 25 that are embedded and set in the recesses 21A, 24A formed in these mold bodies 21, 24.
  • the force provided The caloric pressure surfaces 22A and 25A of these pressurizing dies 22 and 25 are not formed as curved concave surfaces, and the first flat surfaces 26 and 28 in the center of the horizontal diameter of the metal tube 1 and their first It is formed by the second flat surfaces 27 and 29 provided on both sides in the horizontal diameter direction of the metal tube 1 with respect to the flat surfaces 26 and 28, in other words, on both sides in the circumferential direction of the metal tube 1.
  • the second flat surface 27 of the pressing mold 22 of the upper mold 20 is an inclined surface inclined downward from the first flat surface 26, and the second flat surface 29 of the pressing mold 25 of the lower mold 23 is 1It is an inclined surface inclined upward from the flat surface 28.
  • the first portion 1A which is the highest portion and the lowest portion of the metal tube 1, and IB are the pressure surfaces 22A, 25A.
  • the first flat surfaces 26 and 28 are pressurized against the center of the metal tube 1 and then the upper mold 20 is located on both sides of the metal tube 1 in the circumferential direction with respect to the first region 1A.
  • the second part 1C is pressurized by the second flat surface 27 of the pressure surface 22A, and in the lower mold 23, the second part is a part on both sides in the circumferential direction of the metal tube 1 with respect to the first part 1B.
  • 1D is pressed by the second flat surface 29 of the pressing surface 25A. This pressure state is shown in FIG.
  • the first flat surfaces 26, 28 of the pressurizing surfaces 22A, 25A include the first pressurizing unit that pressurizes the metal tube 1 first, and the pressurizing surfaces 22A, 25A On the second flat surfaces 27 and 29, there are second pressurizing portions on both sides in the circumferential direction of the metal tube 1 across the first pressurizing portion and pressurizing the metal tube 1 next.
  • the vertical pressure F acting toward the center of the metal tube 1 acts on the first parts 1A and 1B pressurized by the first pressurizing part, and the first parts 1A and 1B are pressurized by the second pressurizing part. 2 parts
  • a pressing force F that is inclined according to the inclination angle of the second flat surfaces 27 and 29 acts. These applied forces F are applied in the horizontal direction toward the first parts 1A and 1B.
  • the second portion 1C, 1D having the pressurizing component F and the same as the above-described embodiment is the same as the above-described embodiment.
  • the metal tube 1 is connected to the metal tube by the pressurizing component F of the pressurizing force F.
  • the upper and lower molds 20, 23 can be formed by a combination of the first flat surfaces 26, 28 and the second flat surfaces 27, 29.
  • the work for forming these flat surfaces 26, 27, 28, 29 on the pressure dies 22, 25 is easier than the work for forming the curved concave surface on the pressure dies. Can be manufactured.
  • FIG. 6 shows a third embodiment.
  • the upper and lower molds 40, 43 of this embodiment also include mold bodies 41, 44 and pressure molds 4, 2, 45 embedded and set in recesses 41A, 44A formed in these mold bodies 41, 44. Forces These pressure dies 42 and 45 are provided with ridges and valleys for bending the metal tube 31. For this reason, the calo pressure molds 42 and 45 have portions embedded in the four corners 44A and portions exposed from the recesses 41A and 44A.
  • FIG. 7 shows the flattening force of the metal pipe 31 at the position S7—S7 in FIG.
  • FIG. 8 is a cross-sectional view of the metal tube 31 at the position S8-S8 line in FIG. 6 where the bent portion of the metal tube 31 is bent and bent. It is sectional drawing.
  • the pressing surfaces 42A and 45A facing the metal tube 31 in the pressing dies 42 and 45 of the upper and lower dies 40 and 43 are shown in FIGS. Similar to the embodiment, the curved concave surface is formed. These curved concave surfaces are formed in the tube center axis N of the metal tube 31 before being flattened (see Fig.
  • the radius of curvature of the pressing surfaces 42A and 45A at the portion corresponding to the bent portion of the metal tube 31 is equal to that of the metal tube 31. It is smaller than the radius of curvature of the pressure surfaces 42A and 45A at the part corresponding to the non-bending carriage part.
  • the pressing surfaces 42A and 45A having different radii of curvature in the bent and non-bent casing portions are formed in the pressing dies 42 and 45 as smoothly connecting surfaces.
  • the metal tube 31 of this embodiment is a force in which the tube center axis N is bent slightly by a pre-bending process as shown in FIG. Shape
  • the metal pipe that is flattened while being bent in the state may be a straight pipe that has not been pre-bent.
  • the unbent portion of the metal tube 31 shown in FIG. 1st part 31A, 31B force that is the lowest part and the part 1st part 31A, pressurizing face 42A, 45B pressure surface 42A, 45A force is applied to the center of the metal tube 31 with force F , 31
  • the second parts 31C and 31D which are parts on both sides in the circumferential direction of the metal pipe 31 with respect to B are pressurized with the pressure F from the caloric pressure surfaces 42A and 45A of the pressure dies 42 and 45. Also shown in Figure 8
  • the third part 31E, 31F which is the highest part and the lowest part of the metal pipe 31 in this bent part is the pressure surface 42A, 45A force of the pressure dies 42, 45
  • the fourth part 31G, 31H which is the part on both sides in the circumferential direction of the metal tube 31 with respect to the third part 31E, 31 F
  • the pressure is applied by the pressure F from the pressure surfaces 42A and 45A of the pressure dies 42 and 45.
  • the pressurizing surfaces 42A and 45A corresponding to the non-bending portion of the metal pipe 31 are provided with a first pressurizing unit that pressurizes the metal pipe 31 with the pressurizing force F, and with the pressurizing force F.
  • the second parts 31C and 31D are displaced inwardly of the first part 31A and 31B force metal tube 1, and the fourth parts 31G and 31H are connected to the metal pipe 1 from the third parts 31E and 31F. It is shifted inward.
  • the pressurizing force F of the second pressurizing unit and the pressurizing force F of the fourth pressurizing unit are equal to the pressurizing surface 42.
  • the applied pressure F is the first part 31A
  • the radius of curvature of the pressurizing surfaces 42A and 45A at the corresponding part is smaller than the radius of curvature of the pressurizing surfaces 42A and 45A at the part corresponding to the non-bending curve part of the metal tube 31, so Formation
  • the fraction F is larger than the pressurizing component F of the applied pressure F.
  • the metal pipe 31 is bent downward by the upper and lower molds 40, 43 with the pressing dies 42, 45 so that the upper mold 40 is bent at the bent portion of the metal pipe 31. Pair with pressure mold 42 The facing upper part 49 is compressed by bending in the direction of the tube center axis N.
  • the compression portion 49 is also a portion that is flattened in the same manner as the non-bending portion, the compression portion 49 has a compressive force in the circumferential direction of the metal tube 31 by the flattening processing. And a compressive force in the direction of the tube center axis N due to the bending process occurs.
  • the pressurizing component F of the pressurizing force F generated by the pressurizing die 42 of the upper die 40 is as follows.
  • the pressure component F can flatten the metal tube 31 while preventing the formation of recesses.
  • the upper and lower molds 40, 43 of the calo pressure molds 42, 45 have curved concave surfaces with the same radius of curvature at the bent portion of the metal tube 31. Therefore, the bent part of the metal tube 1 is
  • Flattening can be performed by making the upper and lower parts related to 2 symmetrical.
  • FIGS. 9 and 10 show a fourth embodiment in which the metal tube 1 is flattened while bending a part of the same metal tube 31 as in the embodiments of FIGS. 6, 7 and 8.
  • 9 is a diagram corresponding to FIG. 7
  • FIG. 10 is a diagram corresponding to FIG.
  • the caloric pressure surfaces 52A and 55A of the caloric pressure molds 52 and 55 set on the mold bodies 51 and 54 of the upper and lower molds 50 and 53 are formed by a combination of a plurality of flat surfaces.
  • the pressurizing surfaces 52A and 55A in the portion corresponding to the non-bending portion of the metal tube 31 shown in FIG. 9 are the first flat surfaces 56 and 58 at the center in the horizontal diameter direction of the metal tube 31.
  • the first flat surfaces 56 and 58 are formed by second flat surfaces 57 and 59 provided on both sides of the horizontal direction of the metal tube 31 in the diametrical direction.
  • the second flat surface 57 of the pressurizing die 52 of the upper die 50 is an inclined surface that is inclined downward from the first flat surface 56 with respect to the horizontal diameter direction of the metal tube 31.
  • the second flat surface 59 of the pressure die 55 extends from the first flat surface 58 to the horizontal straight line of the metal tube 31. It is inclined with an upward inclination with respect to the radial direction.
  • the pressing surfaces 52A and 55A in the portion corresponding to the bent portion of the metal tube 31 shown in FIG. 10 are the third flat surfaces 60 and 62 in the horizontal diametrical center of the metal tube 31, and these The fourth flat surfaces 61 and 63 are provided on both horizontal diametrical sides of the metal tube 31 with respect to the third flat surfaces 60 and 62.
  • the fourth flat surface 61 of the pressurizing die 52 of the upper die 50 is an inclined surface inclined downward from the third flat surface 60 with respect to the horizontal diameter direction of the metal tube 31, and
  • the fourth flat surface 63 of the pressure die 55 is an inclined surface inclined upward from the third flat surface 62 with respect to the horizontal diameter direction of the metal tube 31.
  • the first flat surfaces 56, 58 and the third flat surfaces 60, 62 are smoothly continuous, and the second flat surfaces 57, 59 and the fourth flat surfaces 61, 63 are also smoothly continuous.
  • the inclination angle of the fourth flat surfaces 61 and 63 with respect to the third flat surfaces 60 and 62 is larger than the inclination angle of the second flat surfaces 57 and 59 with respect to the first flat surfaces 56 and 58.
  • the 3rd part 31E, 31F which is the highest part and the lowest part of the metal pipe 31 is applied to the center of the metal pipe 31 by the pressure F from the third flat surface 60, 62 of the pressurizing mold 52, 55.
  • the fourth portions 31G and 31H which are the portions on both sides in the circumferential direction of the metal tube 31 with respect to the third portions 31E and 31F, are the fourth flat surfaces 61 of the pressing dies 52 and 55, respectively.
  • Pressure is applied with pressure F from 63.
  • the first flat surface 56, 58 corresponding to the unbent portion of the metal tube 31 is provided with a first pressurizing part that pressurizes the metal tube 31 with the applied pressure F.
  • Metal on surface 57, 59 is provided with a first pressurizing part that pressurizes the metal tube 31 with the applied pressure F.
  • Metal pipe 31 is pressed with pressure F on the third flat surfaces 60 and 62 corresponding to the brazed part.
  • the third pressurizing part pressurizes the metal pipe 31 with the applied pressure F to the parts of the fourth flat surfaces 61 and 63.
  • the applied pressure F generated in the second pressurizing part is the first part 31
  • a pressurizing component F that goes to the side of A and 31B, and the pressure F generated in the fourth pressurizing part is
  • the inclination angle of the fourth flat surfaces 61, 63 with respect to the third flat surfaces 60, 62 is larger than the inclination angle of the second flat surfaces 57, 59 with respect to the first flat surfaces 56, 58.
  • the pressurizing component F of the pressing force F is larger than the pressing component F of the pressing force F.
  • 31D is displaced from the first portions 31A, 31B toward the inside of the metal tube 1
  • the fourth portions 31G, 31H are displaced from the third portions 31E, 31F toward the inside of the metal tube 1.
  • the metal tube 31 can be flattened while preventing the formation of the recessed portion, as in the embodiments of Figs.
  • FIG. 11 shows the metal pipe 71 before flattening in this embodiment
  • FIG. 12 shows the metal pipe 71 ′ after flattening, in other words, the flattening apparatus for the metal pipe 71 according to this embodiment.
  • metal tube products manufactured by the method The flattened metal tube 71 'is used as a brake pedal arm for a four-wheel vehicle.
  • the metal tube 71 before the flattening cauldron has a large-diameter portion 72 whose diameter has been increased by the diameter-enlarged cauldron, and the large-diameter portion 72 smoothly connected to the large-diameter portion 72. And a small-diameter portion 73 that has not been diameter-expanded.
  • the large-diameter portion 72 is bent at an angle ⁇ relative to the small-diameter portion 73, and the end 73A of the small-diameter portion 73 opposite to the large-diameter portion 72 is bent in a direction different from the angle ⁇ . ing.
  • These diameter expansion pressurization and bending are performed as preliminary processing before flattening.
  • the tube is aligned with the tube center axis N of the metal tube 71.
  • the vertical cross section for 3 3 has the same circular shape as the previous embodiments.
  • the flattened metal tube 71 has a large diameter portion 72 and a large portion of the small diameter portion 73 excluding the end portion 73A being flattened. Also, the large diameter portion 72 and the small diameter portion 73 are bent at an angle 0 larger than the angle 0. Small diameter part 73
  • the reason for not flattening the end 73A of the metal tube 71 is that the metal tube 71 ′ is moved by a cutting tool 74 that moves in a direction perpendicular to the tube center axis N so that the flattened metal tube 71 ′ has a predetermined overall length. 'of This is because if the end 73A is flattened when the end 73A is cut, it becomes difficult to carry out this cutting operation, and the vertical cross section of the end 73A with respect to the tube center axis N
  • end portion 73A can be easily cut without being crushed and deformed by the cutting tool 74 if it is maintained in a circular shape.
  • FIG. 13 is a cross-sectional view of the main part showing the upper and lower molds 80 and 83 of the press device that is a flattening device for the metal pipe 71 according to this embodiment
  • FIG. FIG. 15 is an essential part cross-sectional view of the upper and lower molds 80 and 83 after the metal tube 71 is flattened.
  • the upper and lower dies 80 and 83 which are press dies are the die main bodies 81 and 84, and the pressure dies embedded and set in the recesses 81 ⁇ / b> A and 84 ⁇ / b> A formed in these die main bodies 81 and 84. 82, 85.
  • the surface facing the metal tube 71 of these pressurizing molds 82 and 85 is pressurized to flatten the metal tube 71 except for the portions 82B and 85B facing the end 73A of the small diameter portion 73 of the metal tube 71.
  • the pressure surfaces become 82A and 85A!
  • the portions 82B, 85B facing the end 73A of the small-diameter portion 73 are the cross-sectional shape and curvature of the end 73A before flattening.
  • the outer peripheral surface of the end 73A is simply surrounded by the curved concave surfaces 82B and 85B, and the end 73A is not flattened by the pressure dies 82 and 85! / become like!
  • the pressurizing dies 82 and 85 flatten the first portion 86 and 88 for flattening the large-diameter portion 72 of the metal pipe 71 and the small-diameter portion 73 excluding the end portion 73A.
  • the second portions 87 and 89 are inclined at an upward slope from the horizontal first portions 86 and 88.
  • the metal pipe 71 is flattened and bent at an angle ⁇ between the large-diameter portion 72 and the small-diameter portion 73 at the same time.
  • the thickness of the large-diameter portion 72 after flattening is sufficiently small with respect to the diameter of the large-diameter portion 72 before flattening.
  • the rising wall 84B on the core member 90 side of the recess 84A formed in the mold body 84 of the lower mold 83 and the thickness of the rising wall 84B A guide bush 91 for guiding the forward and backward movement of the core member 90 is incorporated in the portion.
  • the flattening of the metal pipe 71 by the upper and lower molds 80 and 83 has a large diameter which is one end face in the direction of the pipe center axis N in the metal pipe 71. End face of part 72 7
  • the insertion of the core member 90 starts when the core member 90 is inserted into the interior of the metal tube 1 from the end face 72A after the upper die 80 starts to descend and the flattening of the metal tube 1 begins. After this, before the large-diameter portion 72 is formed into a predetermined cross-sectional shape with the pressurization dies 82 and 85, the core member 90 is formed in the middle portion of the large-diameter portion 72 that is halfway along the entire length of the metal tube 71. Inserted into the length range.
  • the flattening of the metal tube 71 is performed while the metal tube 71 is bent at an angle ⁇ between the large diameter portion 72 and the small diameter portion 73, and corresponds to the bent portion of the metal tube 71. Pressurized type
  • the third and fourth pressure members are provided on the pressure and pressure surfaces 82A and 85A of 82 and 85. Yes.
  • a first pressure unit and a second pressure unit are provided.
  • the pressurizing force generated in the fourth pressurizing part has a pressurizing component directed to the pressurizing side by the pressurizing force of the third caloric pressurizing part, and the pressurizing force generated in the second pressurizing part includes the first pressurizing part.
  • the pressing component of the force is greater than the pressing component of the pressing force of the second pressurizing part, so the bent part of the metal pipe 71 is flattened so that no indentation occurs inside the metal pipe 71. To be bent.
  • the portion corresponding to the large diameter portion 72 is flattened until the inner surface of the metal tube 71 contacts the core member 90. It is a part for chemical processing.
  • one end surface 72A of the metal pipe 71 in the direction of the pipe center axis N is brought into contact with the rising wall 84B.
  • the end surface 72A of the metal tube 71 extends outside the tube center axis N.
  • the rising wall 84B force end surface 72A is outside the tube center axis N.
  • the outer peripheral surface of the end 73A of the small-diameter portion 73 is surrounded by the aforementioned curved concave surfaces 82B and 85B of the pressure dies 82 and 85 as shown in FIG. Therefore, the curvature radii of the curved concave surfaces 82B and 85B are the same as the curvature radius of the cross-sectional shape of the small-diameter portion 73 of the metal pipe 71 before flattening, so the end 73A is a circular shape that is not flattened. The cross-sectional shape is maintained as it is.
  • the work of cutting the end 73A with the cutting tool 74 of FIG. 12 can be easily performed as prescribed.
  • the end portion 73A may be cut simultaneously with the flattening of the metal pipe 71 by the lowering of the upper mold 80.
  • FIG. 16 shows the metal tube 71 when the metal tube 71 is flattened and bent.
  • FIG. 6 shows a sixth embodiment in which three large holes 72 can be drilled.
  • Three punch members 92, 93, 94 are attached downward to the upper mold 80 of this embodiment, and a guide hole 90A for guiding the punch members 92, 93, 94 is provided in the core member 90. , 9 OB, 90C are formed.
  • the metal pipe 71 ′ produced by flattening and bending from the metal pipe 1 has a large diameter portion 72 and is guided by these guide holes 90A, 90B, 90C to descend, and the non-chisel brazing material 92, With 93, 94, 95, 96, 97 forces are formed!
  • the holes 95, 96, and 97C required when the metal pipe 71 'is used as the brake pedal arm can be processed simultaneously with the production of the metal pipe 71' from the metal pipe 71.
  • the punch members 92, 93, 94 in FIG. 16 are separated from the mold body 81 in the upper mold 80, for example, the force disposed on the mold body 81 and the pressure mold 82 of the upper mold 80.
  • the large-diameter portion 72 has a predetermined cross-sectional shape between the pressure molds 82 and 85 and the core member 90.
  • holes 95, 96, and 97 are formed in the large-diameter portion 72 by three punch members by lowering the separation mold.
  • FIG. 17 is a plan view showing a brake pedal arm 100 of a four-wheel vehicle made of the metal pipe 71 ′ manufactured in the embodiment of FIG. 16, and a brake pedal 110 attached to the arm 100.
  • FIG. 18 is a side view of the arm 100 and the brake pedal 110.
  • the arm 100 In the arm 100, the end 73A of the small diameter portion 73 of the metal pipe 71 ′ is cut by the cutting tool 74 described above, and the brake pedal 110 is attached to the cut end. Then, as shown in FIG. 17, the arm 100 is bent at the angle 0 shown in FIG. 12 by the bending care by the pressure dies 82 and 85 in FIG. With this angle 0,
  • the arm 100 includes a large dimension portion 101 having a large vertical dimension and a small dimension portion 102 having a vertical dimension smaller than the large dimension portion 101, as described above.
  • the large dimension portion 101 is formed by the large diameter portion 72 described above, and the small dimension portion 102 is formed by the small diameter portion 73.
  • this flattening cover This is performed while leaving a cavity inside, and this cavity is continuous over the entire length of the arm 100.
  • the large dimension portion 101 is provided with the above-described holes 95, 96, 97.
  • the hole 95 is used to connect the link member 111 for connecting the booster of the brake master cylinder and the arm 100 to the arm 100.
  • the hole 96 is used to insert the horizontal rotation center axis 112 of the arm 100, and the hole 97 returns to the arm 100 when rotated downward about the rotation center axis 112. It is used to connect the return spring 113 to the arm 100.
  • FIG. 19 is a cross-sectional view taken along the line S19—S19 in the small-size portion 102 of the arm 100 shown in FIG. 18, and FIG. 20 is a cross-sectional view taken along the line S20—S20 in the large-size proportional distribution 101 of the arm 100 shown in FIG. FIG.
  • the two surfaces 102A facing the left and right direction of the small-sized portion 102 are separated from the protruding surface that protrudes outward by the above-described flattening cache for the small-sized portion 102.
  • the two surfaces 101A facing the left and right directions of the large dimension portion 101 are formed by the above-described flat wrinkle processing force for the large dimension portion 102.
  • the core member 90 Since the process is performed until the inner surface of the large dimension portion 101 comes into contact with each other, the flat surfaces become parallel to each other!
  • the vertical dimension of the small dimension part 102 is H, whereas the vertical dimension of the large dimension part 101 is H, and H is larger than H.
  • Arm 100 brakes the four-wheeled vehicle
  • this portion is a large-size portion 101 whose vertical dimension is larger than that of the small-size portion 102.
  • the section modulus of the large neutral portion 101 with respect to the horizontal neutral axis is reduced. Since the section modulus with respect to the horizontal neutral axis of the portion 102 can be made larger, the strength of the arm 100 against the bending moment can be sufficiently increased.
  • Figure 21 shows a large dimension portion 101 'of another embodiment.
  • the two surfaces 101 ′ A facing the left and right direction of the large dimension portion 101 ′ are projecting surfaces that project outward as well as the two surfaces 102 A of the small dimension portion 102 of FIG. 19. Yes.
  • large The vertical dimension H of the normal part 101 ' is smaller than H, but the large dimension part 101'
  • the operation of forming the holes 95, 96, 97 in the large dimension portion 101 ′ is performed as post-processing after performing the above-described flattening processing and bending processing.
  • the present invention can be used, for example, to manufacture a member used as a brake pedal arm or the like of a four-wheel vehicle by flattening a metal tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L’invention concerne un dispositif et un procédé de traitement elliptique d’un tube métallique permettant d’aplatir le tube métallique sans produire de pièce rétreinte grâce à seulement deux moules de pressage comme moule supérieur et moule inférieur ou en utilisant ces deux moules de pressage comme éléments techniques majeurs. Ces deux moules de pressage pour aplatir, par pressurisation, le tube métallique (1) ayant une section verticale circulaire jusqu’à l’axe central du tube comprennent le moule supérieur (10) et le moule inférieur (13) ayant des moules de pressage (12) et (15). Les faces (12A) et (15A) des moules de pressage (12) et (15) opposées au tube métallique (1) sont conformées par combinaison de surfaces rétreintes incurvées ou d’une pluralité de surfaces plates les unes avec les autres, et une première pièce de pressurisation permettant de pressuriser, contre les premières portions (1A) et (1B), des premières portions (1A) et (1B) faisant partie de la surface du tube métallique (1) et des secondes portions (1C) et (1D) de la surface du tube métallique (1) des deux côtés du tube métallique (1) dans le sens de la circonférence sont présentes aux surfaces (12A) et (15A). La première pièce de pressurisation pressurise les premières portions (1A) et (1B) par une force de pressurisation (F1) vers le centre du tube métallique (1), et la seconde pièce de pressurisation pressurise les secondes portions (1C) et (1D) par une force de pressurisation (F2) ayant une composante de pressurisation (F2H) en direction des premières portions (1A) et (1B).
PCT/JP2006/306136 2005-03-30 2006-03-27 Dispositif et procédé de traitement elliptique de tube métallique et produit de tube métallique WO2006106622A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06730084A EP1864725A1 (fr) 2005-03-30 2006-03-27 Dispositif et procédé de traitement elliptique de tube métallique et produit de tube métallique
JP2007512512A JP4418838B2 (ja) 2005-03-30 2006-03-27 金属管の扁平化加工装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005097755 2005-03-30
JP2005-097755 2005-03-30

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WO2006106622A1 true WO2006106622A1 (fr) 2006-10-12

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EP (1) EP1864725A1 (fr)
JP (2) JP4418838B2 (fr)
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EP1941955A1 (fr) * 2005-10-28 2008-07-09 Toyota Jidosha Kabushiki Kaisha Procede de correction d'un tube metallique et de correction d'une matrice de presse a metaux
WO2008120586A1 (fr) 2007-03-29 2008-10-09 Infec Corporation Pédale pour véhicule
CN103143629A (zh) * 2013-03-06 2013-06-12 青岛安基电力科技发展有限公司 钢管压扁模具及钢管压扁设备及钢管压扁方法
JP2019181479A (ja) * 2018-04-03 2019-10-24 有限会社山口製作所 偏平断面パイプの管端部精密加工方法
WO2022014262A1 (fr) * 2020-07-14 2022-01-20 日本製鉄株式会社 Procédé de production d'élément creux

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JP5437144B2 (ja) * 2010-04-20 2014-03-12 株式会社エフテック ペダルアーム、ペダルアームの製造装置及びペダルアームの製造方法
ES2405154B1 (es) 2011-10-21 2014-08-04 Batz, S.Coop. Método de fabricación de un pedal para un vehículo motor, y pedal obtenido según el método de fabricación
CN102921801B (zh) * 2012-11-06 2015-03-25 柳州市昌河模具厂 汽车后轴支架总成纵臂梁的成型方法
CN102962648A (zh) * 2012-12-04 2013-03-13 东风(十堰)车身部件有限责任公司 一种空心踏板摇臂的加工工艺方法
JP6130665B2 (ja) * 2012-12-28 2017-05-17 株式会社エフテック ペダル装置
JP6519984B2 (ja) * 2014-04-30 2019-05-29 日本製鉄株式会社 同時異種加工管部材の製造方法
JP6426221B2 (ja) * 2017-03-10 2018-11-21 株式会社半谷製作所 車両用ペダル及びその製造方法
CN109773020B (zh) * 2018-12-25 2019-11-19 宁波思明汽车科技股份有限公司 汽车薄壁结构件的制备方法
CN117066335B (zh) * 2023-10-17 2023-12-15 广州广冷华旭制冷空调实业有限公司 金属管压扁成型模具及其压扁成型工艺

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JPH10264784A (ja) * 1997-03-27 1998-10-06 Mitsubishi Agricult Mach Co Ltd 作業車におけるブレーキ装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1941955A1 (fr) * 2005-10-28 2008-07-09 Toyota Jidosha Kabushiki Kaisha Procede de correction d'un tube metallique et de correction d'une matrice de presse a metaux
EP1941955A4 (fr) * 2005-10-28 2012-01-11 Toyota Motor Co Ltd Procede de correction d'un tube metallique et de correction d'une matrice de presse a metaux
WO2008120586A1 (fr) 2007-03-29 2008-10-09 Infec Corporation Pédale pour véhicule
EP2128737A1 (fr) * 2007-03-29 2009-12-02 Infec Corporation Pédale pour véhicule
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EP2128737A4 (fr) * 2007-03-29 2012-08-22 Infec Corp Pédale pour véhicule
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CN103143629A (zh) * 2013-03-06 2013-06-12 青岛安基电力科技发展有限公司 钢管压扁模具及钢管压扁设备及钢管压扁方法
CN103143629B (zh) * 2013-03-06 2016-08-31 青岛鑫家达工贸有限公司 钢管压扁模具及钢管压扁设备及钢管压扁方法
JP2019181479A (ja) * 2018-04-03 2019-10-24 有限会社山口製作所 偏平断面パイプの管端部精密加工方法
WO2022014262A1 (fr) * 2020-07-14 2022-01-20 日本製鉄株式会社 Procédé de production d'élément creux

Also Published As

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JP4418838B2 (ja) 2010-02-24
CN101146632A (zh) 2008-03-19
JP2009169980A (ja) 2009-07-30
EP1864725A1 (fr) 2007-12-12
JPWO2006106622A1 (ja) 2008-09-11

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