WO2001039909A1 - Roue forgee en alliage leger et son procede de fabrication - Google Patents

Roue forgee en alliage leger et son procede de fabrication Download PDF

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Publication number
WO2001039909A1
WO2001039909A1 PCT/JP2000/008409 JP0008409W WO0139909A1 WO 2001039909 A1 WO2001039909 A1 WO 2001039909A1 JP 0008409 W JP0008409 W JP 0008409W WO 0139909 A1 WO0139909 A1 WO 0139909A1
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WO
WIPO (PCT)
Prior art keywords
design
wheel
disk
forging
fillet
Prior art date
Application number
PCT/JP2000/008409
Other languages
English (en)
Japanese (ja)
Inventor
Katsunori Yoshimura
Original Assignee
Washi Kosan Co., Ltd.
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 Washi Kosan Co., Ltd. filed Critical Washi Kosan Co., Ltd.
Publication of WO2001039909A1 publication Critical patent/WO2001039909A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B1/00—Spoked wheels; Spokes thereof
    • B60B1/06—Wheels with compression spokes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/38—Making machine elements wheels; discs rims; tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/02—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body integral with rim
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/10—Disc wheels, i.e. wheels with load-supporting disc body apertured to simulate spoked wheels

Definitions

  • the present invention relates to a method for producing a one-piece or assembling forged light alloy forged wheel with improved disk design and a wheel thereof.
  • machining center As a method of forming a disk surface by forging into a solid shape without any design, and forming the design by machining, a conventional vertical or horizontal machining center (hereinafter referred to as “machining center”) is used. , MC), a simple design is to cut the entire design or punch a hole that will be the design using a press mold to form the design. Applied.
  • Fig. 13 to Fig. 16 show the conventional method of forming a design by cutting using a vertical MC or the like.
  • FIG. 13 is a sectional view in which a disk precursor 100a and a rim precursor 101a formed into a solid by forging are integrally formed.
  • FIG. 14 shows that the rim precursor 101a shown in Fig. 13 was formed by spinning, etc., and then the outer surfaces of these discs and rims were turned to form a disk 1.
  • FIG. 2 is a cross-sectional view in which the rim and the rim are completed.
  • Fig. 15 shows the process of milling the disk 100 with the end mill 102 attached to the MC to form the opening 103 serving as the design. It shows the situation.
  • FIG. 16A is a plan view of the disk 100 shown in FIG. 15 as viewed from above. End mill 102 is in the process of forming hole 103.
  • FIG. 16B is a cross-sectional view taken along the line E—E of FIG. 16A, in which a fillet portion 106 having a radius of curvature R is formed by cutting.
  • Finishing the disk surface with a solid without design by forging in this way reduces the number of molds, drastically reduces the forging machine's pressing force, and requires less forging time.
  • Considering only forging there is a big advantage compared to the method of forming a design by die forging.
  • an MC with a high-speed spindle for 20,000 to 30,0,000 rotations Z is required. Even so, the milling time per wheel requires more than one hour.
  • the number of processed parts is as small as 50 to 100, the amount of forging dies can be greatly reduced.For example, if the milling processing time by MC exceeds 1 hour Although it is considered that there is also a cost advantage, if a relatively large number of products are manufactured, for example, 50,000-1,000 pieces, if the design is formed only by milling processing There was a problem when the benefits were lost. Disclosure of the invention
  • An object of the present invention is to provide a method for efficiently manufacturing a light alloy forged wheel in which a disk has a design pattern consisting of a curved surface.
  • Another object of the present invention is to provide a light alloy forged wheel in which a disk is provided with a curved design pattern.
  • the present invention relates to the manufacture of a wheel made of light metal alloy having a three-dimensional design on a disk surface, and a fillet part constituting the design on the disk surface of the wheel.
  • milling is performed to provide an opening and Z or undulation along the above-mentioned fillet part. Add a physical design. Undulation includes irregularities.
  • the depth of the forging of the fillet by forging is 2 to 1 Omm, and the total forging thickness is preferably 1 to 5 to lZ2. For example, if the total thickness of the forged material is 20 mm and the depth of the forged part is 6 mm, the processing pressure required for forging depends on the area of the fillet.
  • the processing pressure can be increased by 2 to 3 ° / 0 .
  • the number of forging dies and the number of heats can be forged under the same conditions as for the forging of the solid.
  • the disk manufacturing method of the present invention is applied not only to four-wheeled vehicles but also to two-wheeled vehicles.
  • the opening and / or undulation is provided along the fillet part when the opening or undulation rises on the tangent to the curved surface of the fillet part.
  • the dimension of the distance S is not particularly limited, but 0 to 10 mm is appropriate.
  • the undulation in the hub part and the fixed bolts of the disk and rim seen on the two-piece wheel ⁇ ⁇ Includes the ridges of nut holes for fixing entrance holes and disks to vehicles.
  • the radius of curvature when the curved surface of the fillet formed by forging is constant and / or changes continuously is set in the range of 2 mm to 10 mm.
  • the number of revolutions must be extremely reduced even for an MC with a high-speed rotation axis. Therefore, it is preferable to take care not to provide a corner with an extremely small radius of curvature even at the opening that constitutes the design.
  • the design of the disk on the wheel makes the contours of the design clear by making undulations (irregularities) or by providing openings.
  • the ridgeline of the contour forming the design is designed to be curved so that stress can be dispersed because of high demands on the properties.
  • the radius of curvature of the fillet part is often 2 to 5 mm or more, and five spokes are used.
  • the radius of curvature is larger than 1 Omm. If the radius of curvature exceeds 1 Omm, a clear sense cannot be obtained if viewed as a ridgeline of the contour.
  • the cutting feed speed needs to be extremely slow because the rotating shaft goes inward with respect to the CAD data.
  • a depth of 1 Omm or more is not required as a method for reducing the processing time during forging according to the present invention.
  • the light alloy forged wheel of the present invention includes a disk-shaped fillet formed by forging, and a millet formed along the fillet. And a ring processing part.
  • all or a part of the fillet part constituting the design on the disk surface is formed by forging in advance, and the fillet is formed by milling. It can be obtained by adding a three-dimensional design by providing openings and / or undulations (concavities and convexities) along the edge of the design, and provides a smooth surface on the deep design.
  • These wheels have forged skin and are low cost.
  • FIG. 1 is a front view of a forged product of the present invention.
  • FIG. 2 is a front view of the finished product of the present invention.
  • FIG. 3A is a sectional view taken along the line AA in FIG.
  • FIG. 3B is a sectional view showing the processing procedure.
  • FIG. 4 is a cross-sectional view taken along the line BB in FIG. 2 showing the finished product of the present invention.
  • FIG. 5 is a cross-sectional view taken along the line CC in FIG.
  • FIG. 6 is a sectional view taken along the line DD in FIG.
  • FIG. 7 is a perspective view showing a state of machining by MC.
  • FIG. 8A is a front view showing another opening shape.
  • FIG. 8B is a sectional view taken along line FF of FIG. 8A.
  • FIG. 8C is a front view showing deformation of the shape of the opening.
  • FIG. 9A is a front view showing a part of a five-spoke disk.
  • FIG. 9B is a sectional view taken along the line II of FIG. 9A.
  • FIG. 1OA is a front view showing a part of a disk having another opening shape of five spokes.
  • FIG. 10B is a sectional view taken along the line J—J of FIG. 1OA.
  • FIG. 11A is a front view showing another opening shape of the five spokes.
  • FIG. 118 is a KK sectional view of FIG.
  • FIG. 11C is a sectional view in which a concave portion is opened.
  • FIG. 12A is a sectional view showing a wheel for a motorcycle.
  • FIG. 12B is a sectional view taken along line LL of FIG. 12A.
  • Figure 13 is a cross-sectional view of a forged product without a design on the disk surface and a solid.
  • Fig. 14 is a cross-sectional view of the completed forged product shown in Fig. 13 after rim forming and turning of the disc and rim inner and outer surfaces.
  • Fig. 15 is a cross-sectional view showing the state of machining by MC.
  • Fig. 16A shows the disk shown in Fig. 15
  • FIG. FIG. 16B is a sectional view taken along line EE.
  • BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described based on examples with reference to the drawings.
  • Fig. 1 is a front view showing a disk 1a that has formed a fillet part that constitutes a design by forging, which is the shape before the provision of 10 cross spokes 2. .
  • the configuration of the cross spoke 2a at this stage is shown in Fig. 3A as a development view of a cross section taken along the line AA.
  • the recess 3 and the recess 4 formed by forging form a cross spoke design. spoke
  • the top and bottom of the rib 5 of 2a form fittings 6a and 6b and are connected to the bottoms of the recesses 3 and 4.
  • the depths of the recesses 3 and 4 are T 1 and T 2, respectively, which are determined by the design regardless of the present invention even if they are the same or further different.
  • the disk surface is simply formed by a flat solid surface without any design, and the entire cross section is forged with a thickness of T3.
  • Fig. 3B shows the machined part.
  • the concave part 4 before the cross spoke was provided was brought into contact with the fillet part 6a, and the MC was equipped with a high-speed rotating spindle. Perform ring processing and cut out recess 4.
  • the hatched portion 7 indicates the cut portion.
  • the forged surface is left as it is on the bottom surface of the concave portion 3 indicated by the broken line and the surfaces of the rib 5 and the fillet portion 6a connected thereto. Since the surface formed by forging is used, these designs are formed by milling. There is no need to form an ingot, and the machining time can be greatly reduced.
  • the hatched portion 8 on the back side is NC-lathe-processed and cut off by 1 to 2 mm (T4).
  • the thickness T3 of the spoke 2a is reduced by l to 2 mm in the finished product.
  • a completed spoke 2 is obtained as shown in FIG. 4, and the cut-out recess 4 forms an opening 9 to form a window, and the completed design surface shown in FIG.
  • the resulting disk 1 is obtained.
  • forging the fillet portion has the following advantages.
  • Fig. 7 when machining the fillet portions 6c and 6d formed with the radius R, even with an MC equipped with a high-speed rotating spindle, it is difficult to process three-dimensional CAD data.
  • the rotation of the end mirror 10 must be reduced extremely, as indicated by the arrow G, because the angle of rotation is inward due to numerical control, as shown by the arrow G. No.
  • radius of curvature R of the fillet is 3 mm, it depends on the diameter of the end mirror, but even if the straight part can be machined at 25,000 revolutions / minute, In the machining of the curved surface of the let part, smooth joining with the straight part 11 cannot be obtained unless it is lowered to 800 rotations.
  • FIG. 5 is a sectional view taken along the line C--C shown in FIG. 2, showing an opening 9 formed by milling the recess 4.
  • FIG. 6 is a cross-sectional view taken along the line D--D.
  • the recess 3 remains as forged skin. However, it is possible to cut out this portion to form an opening.
  • FIG. 8A shows a cross-sectional view taken along the line F-F.
  • the slope of the rising surface 12 of the opening 9a is not particularly limited.
  • FIG. 8C shows an example in which an opening 9b is provided at a position parallel to and apart from the fitting 6a.
  • the spokes 13 of the five-spoke disk 1b shown in FIG. 9A form fillet portions 6a and 6b as shown in the enlarged cross-sectional view taken along the line II of FIG. 9B. I have.
  • the opening 9c is cut and opened by the MC at a position separated by the distance S so as to be along the fitting 6b.
  • An appropriate dimension of the distance S is 0 to 10 mm.
  • Fig. 1 OA shows an example of a linear change
  • Fig. 1 OB shows an enlarged view of the J-J section
  • Fig. 11 A shows an example of a curved change
  • Fig. 11 shows an enlarged view of the K-K section.
  • B and Figure 11C Fig. 11B shows an example where 3a is a concave portion and this part is not opened
  • Fig. 11C shows an example where an opening 9f is provided in contact with the fitting part 6a.
  • 9 d and 9 e indicate the respective openings.
  • FIG. 12A shows a cross-sectional view of a wheel 20 for a motorcycle.
  • 21 is a rim
  • 22 is a spoke disk
  • 23 is a hap, and they are integrally formed.
  • the spokes 22a have a shape extending a plurality of radially from the rotation axis, and an L-L cross section of the spoke is shown in FIG. 12B.
  • the design surface appears on both sides of the disk, and the carpets 6e and 6f inevitably exist at twice the location.
  • the fillet portions 6e and 6f are formed on both surfaces by forging to have a contour forming a design.
  • Cutting is performed by MC so that the spokes are aligned with the let, and an opening is provided to complete multiple spokes.
  • the aforementioned rim precursor forms a rim 21 by spinning.
  • the fillet portion is formed by forging. It takes about 18 minutes per wheel 1 to make an opening by three-dimensional milling using a high-speed MC so as to follow the road.
  • the processing time is about 63 It can be in minutes.
  • the design is formed by forging the fillet to a depth of 6 mm, the time required to create the design by milling can be reduced to 13 or less. And can be.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Milling Processes (AREA)

Abstract

L'invention concerne un procédé permettant de fabriquer efficacement une roue forgée en alliage léger comprenant un disque doté d'un motif de configuration incurvée. Ce procédé consiste à former entièrement ou partiellement des parties de congé (6a, 6b) d'une configuration donnée sur une surface de disque de la roue en procédant au préalable à une opération de forgeage pour former un disque (1a), puis à découper des parties hachurées (7) par fraisage le long des parties de congé, d'où la formation d'une partie d'ouverture ou d'irrégularités en vue d'obtenir une configuration tridimensionnelle, la profondeur de formation de ces parties de congé par forgeage valant de préférence environ 2 à 10 mm et environ 1/5 à 1/2 de l'épaisseur totale du forgeage, ce qui permet de réduire considérablement la durée du fraisage opéré par un centre d'usinage.
PCT/JP2000/008409 1999-12-02 2000-11-29 Roue forgee en alliage leger et son procede de fabrication WO2001039909A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP34324899A JP2001150089A (ja) 1999-12-02 1999-12-02 軽合金鍛造製ホイールの製造方法とそのホイール
JP11/343248 1999-12-02

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Publication Number Publication Date
WO2001039909A1 true WO2001039909A1 (fr) 2001-06-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102328189A (zh) * 2011-09-02 2012-01-25 十堰合骏实业有限公司 发动机进气管的加工方法
ITTO20120137A1 (it) * 2012-02-16 2013-08-17 Mw Italia S P A Procedimento di fabbricazione di un disco di una ruota per veicoli
FR3048918A1 (fr) * 2016-03-15 2017-09-22 Peugeot Citroen Automobiles Sa Ebauche de piece pour roue de vehicule automobile
EP3536518A3 (fr) * 2018-03-05 2019-10-30 Citic Dicastal Co., Ltd. Roue et jante comportant une bride intérieure de réduction de poids

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1655089B1 (fr) * 2003-08-11 2012-05-02 Washi Kosan Co., Ltd. Procede de production d'une roue
DE102008034189B3 (de) 2008-07-16 2010-05-12 Felix Aschwanden Fahrzeugrad oder Radstern hierfür
JP2013078770A (ja) * 2010-02-02 2013-05-02 Washi Kosan Co Ltd 鍛造ビレット、鍛造ビレットの製造方法及びホイールの製造方法
CN106826109A (zh) * 2016-12-23 2017-06-13 迈得医疗工业设备股份有限公司 一次性输液器配件的供料装置制作方法
CN109648252A (zh) * 2018-12-11 2019-04-19 陕西宏远航空锻造有限责任公司 一种大型钛合金框类锻件加工变形防治方法及装置
CN110238433A (zh) * 2019-05-24 2019-09-17 深圳市银宝山新科技股份有限公司 模具的分型面加工方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055068A (en) * 1975-04-09 1977-10-25 Forgeal, Societe Pour Le Forgeage Et L'estampage Des Alliages Legers Process for manufacturing monobloc vehicle wheels
JPS6046823A (ja) * 1984-03-05 1985-03-13 Kobe Steel Ltd アルミニウム又はアルミニウム合金製自動車用ホイ−ルの製造方法
JPS60127040A (ja) * 1983-12-14 1985-07-06 Kobe Steel Ltd アルミホイ−ルの加工方法
JPS647001U (fr) * 1987-07-03 1989-01-17
JPH0687050A (ja) * 1991-08-19 1994-03-29 Hoei Kogyo Kk 車両用ホイールの製造方法および中間部材の鍛造用型
WO1995007826A1 (fr) * 1993-09-16 1995-03-23 Washi Kosan Co., Ltd. Roue de vehicule en alliage leger
JPH07178500A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd ロードホイール用ディスクの製造方法
JPH07178501A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd ロードホイール用ディスクの製造方法
JPH07178499A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd ロードホイールの製造方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055068A (en) * 1975-04-09 1977-10-25 Forgeal, Societe Pour Le Forgeage Et L'estampage Des Alliages Legers Process for manufacturing monobloc vehicle wheels
JPS60127040A (ja) * 1983-12-14 1985-07-06 Kobe Steel Ltd アルミホイ−ルの加工方法
JPS6046823A (ja) * 1984-03-05 1985-03-13 Kobe Steel Ltd アルミニウム又はアルミニウム合金製自動車用ホイ−ルの製造方法
JPS647001U (fr) * 1987-07-03 1989-01-17
JPH0687050A (ja) * 1991-08-19 1994-03-29 Hoei Kogyo Kk 車両用ホイールの製造方法および中間部材の鍛造用型
WO1995007826A1 (fr) * 1993-09-16 1995-03-23 Washi Kosan Co., Ltd. Roue de vehicule en alliage leger
JPH07178500A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd ロードホイール用ディスクの製造方法
JPH07178501A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd ロードホイール用ディスクの製造方法
JPH07178499A (ja) * 1993-12-24 1995-07-18 Nissan Motor Co Ltd ロードホイールの製造方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102328189A (zh) * 2011-09-02 2012-01-25 十堰合骏实业有限公司 发动机进气管的加工方法
ITTO20120137A1 (it) * 2012-02-16 2013-08-17 Mw Italia S P A Procedimento di fabbricazione di un disco di una ruota per veicoli
EP2628611A1 (fr) * 2012-02-16 2013-08-21 MW Italia S.p.A. Procédé de production d'un disque de roue de véhicule
FR3048918A1 (fr) * 2016-03-15 2017-09-22 Peugeot Citroen Automobiles Sa Ebauche de piece pour roue de vehicule automobile
EP3536518A3 (fr) * 2018-03-05 2019-10-30 Citic Dicastal Co., Ltd. Roue et jante comportant une bride intérieure de réduction de poids
US11167587B2 (en) 2018-03-05 2021-11-09 Citic Dicastal Co., Ltd. Wheel and rim with weight reduction inner flange

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