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WO2025003874A1 - Nouveau procédé de fabrication d'un disque de roue - Google Patents

Nouveau procédé de fabrication d'un disque de roue Download PDF

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Publication number
WO2025003874A1
WO2025003874A1 PCT/IB2024/056151 IB2024056151W WO2025003874A1 WO 2025003874 A1 WO2025003874 A1 WO 2025003874A1 IB 2024056151 W IB2024056151 W IB 2024056151W WO 2025003874 A1 WO2025003874 A1 WO 2025003874A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
forming
achieve
forming operation
conical shape
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/IB2024/056151
Other languages
English (en)
Inventor
Eren EGINAR
Barathi Rajendran
Dharmendra Kumar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STEEL STRIPS WHEELS Ltd
Original Assignee
STEEL STRIPS WHEELS 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 STEEL STRIPS WHEELS Ltd filed Critical STEEL STRIPS WHEELS Ltd
Publication of WO2025003874A1 publication Critical patent/WO2025003874A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/065—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes starting from a specific blank, e.g. tailored blank
    • 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
    • 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
    • B21D22/14—Spinning
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • 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
    • B21K1/32—Making machine elements wheels; discs discs, e.g. disc wheels
    • 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
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/08—Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
    • B21K21/10—Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs cone-shaped or bell-shaped articles, e.g. insulator caps
    • 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
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles

Definitions

  • the present disclosure generally relate to the field of automobile wheels. More particularly, it pertains to a method of manufacturing a wheel disc.
  • Wheels form a critical part in automobiles.
  • the wheels have an effect on vehicle stability and driving comfort thereby playing an important role in the safety associated with the vehicles.
  • a conventional automobile wheel for a pneumatic tyre typically has two main parts: a disc that is configured to be coupled to a corresponding hub of the vehicle, and a rim that supports the pneumatic tyre.
  • the two parts are typically manufactured separately and joined together, such as by welding or bolting.
  • the disc is typically manufactured, as also disclosed by different Patent documents, such as US9630279B2, IN338403B and IN4366/MUM/2015, from a rectangular piece of strip made of metallic materials.
  • the rectangular piece of strip is rolled to form a band, which is welded to form a hoop. Thereafter, the hoop is formed by press operations, spinning process or a combination of the two, to give final shape before machining operations.
  • the present disclosure relates to a method for manufacturing a wheel disc.
  • the method includes providing a rectangular strip made of a metallic material, rolling the rectangular strip to form a band, welding adjacent ends of the band to form a ring, expanding the formed ring to achieve a required diameter and forming the expanded ring to achieve a required shape of the wheel disc.
  • the forming includes a first forming operation to flare a first axial side of the ring in an outward direction to achieve a first conical shape having a first angle at the first axial side; a second forming operation to form a second axial side of the ring in an inward direction to achieve a second conical shape at the second axial side, while simultaneously forming the first axial side to increase the first angle of the first conical shape; and a third forming operation to further form the second conical shape to achieve a flat surface that is perpendicular to an axis of the ring, thereby achieving a required shape of the wheel disc.
  • the method may further include forming the second axial side during the second forming operation to achieve the second conical shape that has a larger cone angle than the first angle of the first conical shape.
  • the method may further include: resting an inner surface of the first conical shape against a respective die of a matching shape during the second forming operation and the third forming operation, thereby ensuring concentric location of the ring in the die.
  • the method includes one or more of the operations such as, piercing all holes, performing flow forming, piercing and coining of vent holes, piercing and coining of bolt holes, spoking and boring and bolt hole drilling on the achieved shape of wheel disc to obtain a final wheel disc.
  • FIG. 1 illustrates initial processing steps involved for obtaining a ring structure for manufacturing a wheel disc, in accordance with some embodiments of the present disclosure.
  • FIG. 2 illustrates an exemplary sectional view showing a first forming operation on the obtained ring structure, in accordance with some embodiments of the present disclosure.
  • FIG. 3 illustrates an exemplary sectional view showing a second forming operation on the obtained ring structure, in accordance with some embodiments of the present disclosure.
  • FIG. 4 illustrates an exemplary sectional view showing a third forming operation to achieve the disc shape, in accordance with some embodiments of the present disclosure.
  • FIG. 5 illustrates variations associated with the first, second, and third forming operations to manufacture the wheel disc, in accordance with some embodiments of the present disclosure.
  • FIG. 6 illustrates one or more operations performed on a preformed disc to achieve a final disc, in accordance with some embodiments of the present disclosure.
  • the present disclosure relates to a method of manufacturing a wheel disc.
  • the wheel disc is manufactured from a steel strip by making a hoop/ring out of the steel strip and subjecting the hoop/ring to first, second, and third forming operations followed by an all hole piercing and a flow forming operation to achieve the final wheel disc.
  • FIG. 1 illustrates initial processing steps 100 involved in obtaining a ring structure for manufacturing a wheel disc, in accordance with some embodiments of the present disclosure.
  • a step-by-step process for forming the ring/hoop from a metallic strip is shown.
  • the process 100 may include, at step 102, providing a rectangular strip made of metallic material. Further, the process 100 may include at step 104, rolling or coiling the rectangular strip to form a band like structure.
  • the process 100 may include at step 106, welding the adjacent ends of the band to form a ring, wherein the welding process may include, for example, without limitations, a butt-welding process.
  • FIG. 2 illustrates, through sectional views of input and output, a first forming operation 200 on the obtained ring structure, in accordance with some embodiments of the present disclosure.
  • a first forming operation performed on the ring/hoop which is obtained by the initial processing 100 of the steel strip as mentioned above with reference to FIG. 1, is shown.
  • the first forming operation flares a first axial side of the ring, such as the lower side of the ring, as shown in the exemplary illustration of FIG. 2, in an outward direction 202 to achieve a first conical shape having a first angle of Al, at the first axial side.
  • the second operation is performed such that the second conical shape has a larger cone angle B than a cone angle A2 of the further enlarged first conical shape.
  • forming the two sides to different angles reduces the formation of waves/zig-zags on inner surface of the ring.
  • FIG. 4 illustrates a third forming operation 400 on the obtained ring structure, in accordance with some embodiments of the present disclosure.
  • the third forming operation further forms the second conical shape to achieve a flat surface 402 that is perpendicular to an axis of the ring, thereby achieving a required shape of the wheel disc.
  • the inward bent side is further bent inwards for example, at an angle of 90 degrees with respect to the initial position to form the desired shape of the disc.
  • FIG. 5 illustrates possible variations 500 in the process of performing the first, the second, and the third forming operations to manufacture the wheel disc, in accordance with some embodiments of the present disclosure. As shown therein, there can be eight different variations 500 in the process of performing the first, second and third forming operations, by different combinations of manner of positioning the first side or the second side in the corresponding die, while forming the other side by the corresponding punch.
  • FIG. 6 illustrates one or more operations 600 performed on a formed disc, i.e., after the first, the second, and the third forming operations, to achieve a final disc, in accordance with some embodiments of the present disclosure.
  • an all -hole piercing (AHP) operation 602 flow forming 604, and the final wheel disc 606 are shown.
  • the operations performed on the formed disc include flattening, face machining, AHP, flow forming, vent holes piercing (VHP), vent holes coining (VHC), spoke & bore machining and bolt hole drilling to achieve the final disc.
  • the operations performed on the formed disc can include face machining, flow forming, bolt holes piercing (BHP), bolt holes coining (BHC), flattening, vent holes piercing (VHP), vent holes coining (VHC), and spoke & bore machining to achieve the final disc.
  • BHP bolt holes piercing
  • BHC bolt holes coining
  • VHP vent holes piercing
  • VHC vent holes coining
  • spoke & bore machining to achieve the final disc. The operations are explained below with reference to FIG. 7 and FIG. 8.
  • FIG. 7 illustrates a first variation 700 associated with the one or more operations 600 performed on a preformed disc to achieve a final disc, in accordance with some embodiments of the present disclosure.
  • operations performed on the preformed disc such as, flattening 702, face machining 704, AHP 706, flow forming 708, vent holes piercing (VHP) 710, vent holes coining (VHC) 712, spoke & bore machining 714 and bolt hole drilling (716) to achieve the final disc 718, in accordance with some embodiments are shown.
  • the flattening 702 and face machining 704 may be made optional or removed from the set of operations to be performed on the preformed disc to achieve the final wheel disc 718.
  • FIG. 9 illustrates an exemplary flow diagram for the method 900 for manufacturing of the wheel disc, in accordance with some embodiments of the present disclosure.
  • the method 900 for manufacturing of the wheel disc from a steel strip can include at step 902 of providing a metallic strip. Further, the method 900 may include, at step 904, a coiling process, to form a band from the metallic strip. The method 900 further includes at step 906 of welding both ends of the band to obtain a ring/hoop structure. In some embodiments, the welding operation may include a butt-welding operation.
  • the method 900 may further include, at step 908, re-rounding the ring/hoop structure.
  • the re-rounding enables removing any oval shape change created due to the welding operation at step 906.
  • the re-rounded ring/hoop is then subjected to expansion.
  • the method 900 may include at step 910 an expansion or heating operation to expand the ring/hoop. The expansion operation enables achieving the required diameter for the ring for the subsequent forming operations.
  • the method 900 may further include at step 912 performing forming operations on the expanded ring/hoop to obtain a preformed wheel disc.
  • the preformed wheel disc is subjected to further operations to achieve the final wheel disc.
  • the different forming operations and their respective variations were discussed in detail above with reference to FIGs. 2, 3, 4, and 5 and therefore are not included here for the sake of brevity.
  • the method 900 may include, at step 914, the set of operations to be performed on the preformed disc, wherein the set of operations include AHP and flow forming to achieve the final disc.
  • the set of operations on the preformed disc and their variations were discussed in detail above and therefore are not included here for the sake of brevity.
  • the present disclosure provides an improved method for manufacturing a disc wheel which ensures concentric seating of the ring on the die.
  • the present disclosure provides an improved method for manufacturing a disc wheel that reduces the waves or zigzags formed on an inner surface of the ring.
  • the present disclosure provides an improved method for manufacturing a disc wheel that reduces material wastage in the process of manufacturing the wheel disc. [0055] The present disclosure provides an improved method for manufacturing a disc wheel that increase the thickness at the attachment area/nave contact area without hot forming.
  • the present disclosure provides an improved method for manufacturing a disc wheel that prepare the band with enough volume of material to address the required thickness at each location.
  • the present disclosure provides an improved method for manufacturing a disc wheel that achieve the circularity of the component by expanding process.

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

Abstract

Un procédé 900 de fabrication d'un disque de roue selon l'invention comprend le laminage 904 d'un ruban métallique pour former une bande, le soudage 906 d'extrémités adjacentes de la bande pour former une bague, l'expansion 910 de la bague formée pour obtenir un diamètre requis, et la formation 912, qui comprend une première opération de formage pour évaser un premier côté axial de la bague dans une direction vers l'extérieur pour obtenir une première forme conique au premier côté axial, et une deuxième opération de formage pour former un second côté axial de la bague dans une direction vers l'intérieur pour obtenir une seconde forme conique au second côté axial tout en dilatant simultanément le premier angle d'augmentation de côté axial du premier cône sur le premier côté axial. Une troisième opération de formage forme la seconde forme conique pour obtenir une surface plate, ce qui permet d'obtenir une forme requise du disque de roue.
PCT/IB2024/056151 2023-06-30 2024-06-25 Nouveau procédé de fabrication d'un disque de roue Pending WO2025003874A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202311044127 2023-06-30
IN202311044127 2023-06-30

Publications (1)

Publication Number Publication Date
WO2025003874A1 true WO2025003874A1 (fr) 2025-01-02

Family

ID=93937748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2024/056151 Pending WO2025003874A1 (fr) 2023-06-30 2024-06-25 Nouveau procédé de fabrication d'un disque de roue

Country Status (1)

Country Link
WO (1) WO2025003874A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012127491A2 (fr) * 2011-03-24 2012-09-27 Wheels India Limited Nouveau procédé de fabrication d'un disque de roue

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012127491A2 (fr) * 2011-03-24 2012-09-27 Wheels India Limited Nouveau procédé de fabrication d'un disque de roue

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