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WO1998041360A1 - Roue de vehicule polie - Google Patents

Roue de vehicule polie Download PDF

Info

Publication number
WO1998041360A1
WO1998041360A1 PCT/US1998/005808 US9805808W WO9841360A1 WO 1998041360 A1 WO1998041360 A1 WO 1998041360A1 US 9805808 W US9805808 W US 9805808W WO 9841360 A1 WO9841360 A1 WO 9841360A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
face
burnished
outboard
burnishing
Prior art date
Application number
PCT/US1998/005808
Other languages
English (en)
Other versions
WO1998041360A9 (fr
Inventor
John M. Baumgarten
Original Assignee
Hayes Wheels International, Inc.
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 Hayes Wheels International, Inc. filed Critical Hayes Wheels International, Inc.
Priority to AU67723/98A priority Critical patent/AU6772398A/en
Publication of WO1998041360A1 publication Critical patent/WO1998041360A1/fr
Publication of WO1998041360A9 publication Critical patent/WO1998041360A9/fr

Links

Classifications

    • 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
    • B60B3/06—Disc wheels, i.e. wheels with load-supporting disc body formed by casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution

Definitions

  • This invention relates in general to vehicle wheels and in particular to a vehicle wheel having an outboard face which includes a burnished portion to provide a cosmetic finish to the wheel face and a method for burnishing the portion of the wheel face.
  • Vehicle wheels typically include an annular wheel rim and a circular wheel disc.
  • the wheel disc can be formed across the outboard end of the wheel rim or recessed within the wheel rim.
  • the wheel rim is adapted to carry a pneumatically inflated tire.
  • the wheel rim has inboard and outboard tire retaining flanges formed on the ends thereof which extend in an outward radial direction to retain the tire on the wheel.
  • Inboard and outboard tire bead seats are formed on the outer surface of the wheel rim adjacent to the corresponding tire retaining flange to support the tire walls and form an air-tight seal therewith.
  • the wheel rim also includes a reduced diameter deep well between the tire bead seats to facilitate mounting the tire upon the wheel.
  • the wheel disc includes a central wheel hub for mounting the wheel upon a vehicle.
  • the inboard face of the wheel hub is typically machined to form a flat surface to assure good contact between the wheel and the vehicle.
  • a pilot hole and a plurality of wheel stud holes extend through the wheel hub.
  • the pilot hole is centered on the hub and the stud holes are spaced equally about a bolt circle which is concentric with the pilot hole.
  • the pilot hole can receive the end of an axle while the wheel stud holes receive wheel studs for attaching the wheel to the vehicle.
  • the wheel disc also typically includes a plurality of wheel spokes which extend radially from the wheel hub to the wheel rim and support the hub within the rim.
  • a flow chart for a wheel manufacturing process is shown in Fig. 1.
  • function block 10 a wheel cast in a single piece from a light weight metal such as aluminum, magnesium or titanium, or an alloy of a light weight metal.
  • a light weight metal such as aluminum, magnesium or titanium, or an alloy of a light weight metal.
  • Such wheels are becoming increasingly popular because they weigh less than conventional steel wheels and can include outboard wheel disc faces which are formed in a pleasing aesthetic shape.
  • One piece wheel castings are usually formed by a gravity or low pressure casting process. The wheel castings are finished by machining to a final shape. Two separate machining stations are typically used to finish a wheel casting.
  • functional block 11 the outboard end of a rough wheel casting is clamped to the face of a first wheel lathe which is located at the first machining station for a first set of machining operations.
  • a wheel lathe is a dedicated machine designed to finish wheels.
  • Wheel lathes typically include a plurality of cutting tools mounted upon a lathe turret. The turret is indexed to sequentially move each of the tools to the surface of the wheel casting.
  • Wheel lathes are usually operated under computer numerical control (CNC) to sequentially perform a number of related machining operations.
  • CNC computer numerical control
  • a wheel lathe turret can be equipped with a turning tool, a facing tool and a drill bit and the wheel lathe can be programmed to sequentially turn, face and bore a wheel casting.
  • the wheel lathe face typically includes a chuck having a plurality of jaws which grip the outboard wheel retaining flange and tire bead seat. Consequently, the outboard wheel rim end is not finished during the first set of machining operations.
  • the outside and inside surfaces of the wheel rim are turned to their final shapes and the inboard surface of the wheel hub is faced in functional block 12. Additionally, the inboard end of the wheel rim is finished.
  • the partially finished wheel casting is removed from the first wheel lathe, reversed and clamped on a second wheel lathe for a second set of machining operations in functional block 13. During the second set of machining operations, the inboard wheel flange and tire bead seat are gripped in the jaws of the wheel lathe chuck, exposing the outboard surface of the wheel disc and the outboard end of the wheel rim for machining.
  • the second wheel lathe turns and faces the outboard wheel face.
  • the outboard tire retaining flange and the outboard tire bead seat also are turned to final shapes.
  • the surface of the hubcap retention area is machined to final shape and the stud mounting holes are drilled through the hub in functional block 15.
  • the wheel casting may be removed from the wheel lathe and the drilling operation completed at another work station.
  • a typical finishing process involves polishing the wheel surface to smooth the grooves and provide a lusterous appearance to the surface of the wheel. The polishing is usually followed by application of a clear coating to protect the polished wheel surface.
  • Polishing typically involves a first step of rough buffing with an abrasive compound as shown in functional block 20.
  • the buffed wheel is degreased in functional block 21.
  • One frequently used method of degreasing involves passing the wheel through a chamber which is filled with a vapor of a solvent. The solvent condenses upon wheel, covering the entire wheel surface. Once the solvent has had a sufficient time to dissolve any surface grease, the solvent is washed from the wheel to complete the degreasing. As shown in functional block 22, the wheel is then wet polished with a liquid lubricant for the polishing abrasive.
  • the wheel is usually rotated and rotating polishing wheels are applied to the surface while a slurry of polishing abrasive and a carrier fluid is applied to the wheel surface.
  • a slurry of polishing abrasive and a carrier fluid is applied to the wheel surface.
  • the wheel is rinsed in functional block 23. Typically, deionized water is used for the rinse.
  • the wheel surface is prepared for coating in functional block 24.
  • the wheel is immersed in a chromate bath.
  • a clear coating is applied to the wheel in functional block 25.
  • the clear coating is sprayed onto the wheel while the wheel is slowly rotated. The coating is then heated in a curing oven.
  • This invention relates to a wheel having an outboard face which includes a burnished portion to provide a cosmetic finish to the wheel face and a method for burnishing the portion of the wheel face.
  • Typical solvents include trichloroethylene, trichloroethane, sulfuric acid and perchloroethylene, which are toxic.
  • the lubricants for the abrasives can include animal lubricants such as grease and lard.
  • the polishing wheels can produce air-borne lint during the polishing and buffing operation. Accordingly, it is necessary to protect the workers from these materials and collect and dispose of the residues. Because of the complexity of the polishing operations and the need to appropriately control the environmental impact of the materials utilized, wheels are often shipped to a contractor for polishing. This involves additional time and expense. Thus, it would be desirable to smooth the wheel face without polishing the wheel.
  • the present invention contemplates a vehicle wheel comprising an annular wheel rim portion and a wheel disc formed across the wheel rim.
  • the wheel disc has an outboard face which includes a burnished portion to provide a pleasing cosmetic appearance. It is further contemplated that the burnished portion of the wheel disc face can extend over the entire surface of the wheel disc outboard face. An optional protective coating can be formed over the burnished portion of the wheel disc face.
  • the present invention further includes a process for forming a decorative surface upon a vehicle wheel face which comprises providing a machined vehicle wheel including a wheel rim and having a wheel disc extending radially across the wheel rim.
  • the machined wheel is mounted in a lathe.
  • the wheel is rotated while a burnishing tool is urged against the outboard surface of the wheel disc to smooth a portion of the wheel disc surface.
  • the invention also contemplates burnishing the entire outboard face of the wheel disc. Subsequent to burnishing the wheel face, an optional protective coating can be applied to the burnished surface.
  • Fig. 1 is a flow chart for a known process for manufacturing a one piece vehicle wheel.
  • Fig. 2 is a flow chart for a known process for polishing a one piece vehicle wheel.
  • Fig. 3 is a sectional view of a burnished vehicle wheel and illustrates a process for burnishing the vehicle wheel face in accordance with the invention.
  • Fig. 4 illustrates a burnishing tool used in the burnishing shown in Fig. 3.
  • Fig. 5 illustrates an alternate embodiment of the burnishing tool shown in Fig. 3.
  • Fig. 6 is a flow chart for manufacturing a one piece vehicle wheel which utilizes the burnishing process illustrated in Fig. 3.
  • Fig. 3 a sectional view of a one piece wheel 30 having a burnished outboard surface 31 and a process for burnishing the wheel 30 in accordance with the present invention.
  • Burnishing involves rubbing a smooth hard tool under considerable pressure over the minute surface protrusions that are formed in a metal surface during machining. Bumishing reduces the depth and sha ⁇ ness of the protrusions through plastic flow of the metal. As the tool moves, the microscopic peaks in the work surface are compressed into the adjacent hollows, which densities the surface of the metal. Burnishing simultaneously smoothes and compresses the work surface.
  • the present invention is directed to burnishing the visible portions of a wheel face, which includes portions of the wheel which are not subjected to stress, to cosmetically improve the appearance of the wheel face.
  • the wheel 30 includes an annular wheel rim 32.
  • a wheel disc 33 which includes the outboard surface 31 extends radially across the outboard end of the wheel rim 32.
  • the invention contemplates mounting an inboard end of the wheel rim 32 in the jaws 34 of a lathe or a spinner chuck of a wheel lathe (not shown).
  • the wheel 30 is rotated about an axis 35, as shown by the arrow in Fig. 3, by the wheel lathe.
  • a burnishing tool 40 mounted upon the lathe turret (not shown) is urged against the outboard wheel face 31.
  • the tool 30 is traversed in a radial direction from the outboard end of the wheel rim 32 across the wheel face 31.
  • the tool 40 moves alternately toward and away from the center of the wheel disc 33, as shown by the small arrows in Fig. 3.
  • the burnishing tool 40 can be inclined to burnish all possible inclinations of the wheel face 31 , such as horizontal, vertical or inclined.
  • the tool 40 can be advanced in an axial, or radial, direction to increase the force exerted upon the wheel face 31.
  • the surface of the wheel face 31 is plastically deformed and smoothed as the tool 40 passes thereover to form a burnished portion 41 of the wheel face 31.
  • the invention further contemplates a protective coating 42 which covers the burnished portion 41 of the wheel; however, such a coating 42 is optional.
  • the protective coating 42 is a clear coating; however, other coatings can be applied to the burnished portion 41.
  • the burnishing tool 40 includes a very hard steel ball 43 mounted or formed upon an end of a tool bar 44, as shown in Fig. 4.
  • the ball 43 has a mirror or very smooth surface and a hardness which is greater than 62 Re.
  • the tool 40 can be a hardened roller 45 which turns on a shaft 46 mounted in the slotted end of a tool bar 47, as shown in Fig. 5.
  • a process for burnishing the wheel face is illustrated by the flow chart shown in Fig. 6. Steps shown in Fig. 6 which are similar to steps shown in Figs. 1 and 2 have the same numerical designators.
  • a vehicle wheel is cast by a conventional casting process, such as, for example, gravity or low pressure casting.
  • functional blocks 11 through 15 the wheel casting is machined to a final shape as described above.
  • the outboard wheel face is burnished on a wheel lathe or other conventional wheel finishing machine.
  • the wheel is rotated upon the wheel lathe while a burnishing tool is urged against and moved radially across the outboard wheel face.
  • the wheel is removed from the wheel lathe in functional block 52.
  • the wheel can then be finished with a surface preparation in functional block 25 followed by a coating and curing of the coating in functional block 25.
  • application of the protective coating to the burnished surface is optional.
  • the present invention contemplates that burnishing is included as one of the steps in the prior art process for machining a wheel casting.
  • a burnishing tool can be added to the turret of the wheel lathe used to machine the wheel casting and the burnishing operation included as one of the programmed machining steps for finishing the wheel casting.
  • a burnishing station which is dedicated to burnishing the wheel faces, can be established at the wheel manufacturing facility.
  • the preferred embodiment has been described and illustrated above as burnishing the entire outboard wheel face, it will be appreciated that only a portion of the wheel face can be burnished.
  • the esthetic design of the wheel may require that only a portion of the wheel face is to be lusterous with the remainder remaining as machined or painted. Accordingly, only the portion which is desired to be luterous would be burnished.
  • the invention also contemplates that entire surface of wheel can be burnished to provide both an improvement in the cosmetic appearance to the wheel and the enhanced mechanical properties mentioned above which result from the compression stresses imparted by the burnishing process.
  • the cosmetic appearance of wheels formed by other conventional processes also can be improved by burnishing.
  • the present invention also contemplates burnishing the outboard surface of forged or stamped wheel discs.
  • the inventor expects that burnishing of the wheel face to enhance the cosmetic appearance thereof will cost less than buffing or polishing of the wheel face. Also, because the wheel can be burnished on existing wheel lathes, no capital cost for polishing machines is required. The burnishing process eliminates both the exposure of personnel to toxic substances utilized during polishing and the expense of disposing of the toxic wastes generated thereby. Production time and cost will also be reduced since the need to ship the wheel to a polishing contractor will be eliminated.
  • the burnishing tool can extend into the wheel rim to reach the surface of a recessed wheel disc, which can be difficult to reach with polishing wheels. Burnishing preserves crisp edge surfaces which may be aesthetically desirable. Such edges tend to be blunted or removed by the abrasive nature of the polishing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Roue (30) de véhicule possédant une face extérieure présentant une partie polie afin de conférer une finition esthétique à ladite face. Procédé servant à polir la partie de la face de la roue.
PCT/US1998/005808 1997-03-19 1998-03-19 Roue de vehicule polie WO1998041360A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU67723/98A AU6772398A (en) 1997-03-19 1998-03-19 Burnished vehicle wheel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3962897P 1997-03-19 1997-03-19
US60/039,628 1997-03-19

Publications (2)

Publication Number Publication Date
WO1998041360A1 true WO1998041360A1 (fr) 1998-09-24
WO1998041360A9 WO1998041360A9 (fr) 1999-03-04

Family

ID=21906505

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/005808 WO1998041360A1 (fr) 1997-03-19 1998-03-19 Roue de vehicule polie

Country Status (2)

Country Link
AU (1) AU6772398A (fr)
WO (1) WO1998041360A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1211025A3 (fr) * 2000-11-29 2002-12-04 Hayes Lemmerz International, Inc. Outil et procédé de finissage de la surface des roues de véhicule
EP1439018A1 (fr) * 2003-01-17 2004-07-21 Hayes Lemmerz International, Inc. Procédé de fabrication d'une surface décorative plaquée au chrome d'une roue
US6893330B2 (en) 2000-11-08 2005-05-17 Hayes Lemmerz International, Inc. Tool and process for chrome plating a vehicle wheel surface
US6997787B2 (en) 2000-11-08 2006-02-14 Hayes Lemmerz International, Inc. Process for copper free chrome plating of a vehicle wheel surface
WO2021004623A1 (fr) * 2019-07-09 2021-01-14 Automotive Components Floby Ab Procédé et appareil de polissage par pression d'un élément de roue

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2624610A1 (de) * 1976-06-02 1977-12-08 Audi Nsu Auto Union Ag Verfahren zur herstellung von felgen aus einer aluminiumlegierung im druckguss
JPS5998774A (ja) * 1982-11-26 1984-06-07 Toyota Motor Corp アルミ部品の塗装方法
US4835826A (en) * 1986-12-01 1989-06-06 The B.F. Goodrich Company Method of burnishing
US5099558A (en) * 1988-04-25 1992-03-31 The B. F. Goodrich Company Burnishing tool holder
US5329684A (en) * 1992-02-14 1994-07-19 Messier-Bugatti Method of burnishing metal parts, in particular light alloy wheels, and apparatus for implementing said method
JPH07329502A (ja) * 1994-06-13 1995-12-19 Nissan Motor Co Ltd 光輝アルミロードホイールの製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2624610A1 (de) * 1976-06-02 1977-12-08 Audi Nsu Auto Union Ag Verfahren zur herstellung von felgen aus einer aluminiumlegierung im druckguss
JPS5998774A (ja) * 1982-11-26 1984-06-07 Toyota Motor Corp アルミ部品の塗装方法
US4835826A (en) * 1986-12-01 1989-06-06 The B.F. Goodrich Company Method of burnishing
US5099558A (en) * 1988-04-25 1992-03-31 The B. F. Goodrich Company Burnishing tool holder
US5329684A (en) * 1992-02-14 1994-07-19 Messier-Bugatti Method of burnishing metal parts, in particular light alloy wheels, and apparatus for implementing said method
JPH07329502A (ja) * 1994-06-13 1995-12-19 Nissan Motor Co Ltd 光輝アルミロードホイールの製造方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 212 (C - 244) 27 September 1984 (1984-09-27) *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 004 30 April 1996 (1996-04-30) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6893330B2 (en) 2000-11-08 2005-05-17 Hayes Lemmerz International, Inc. Tool and process for chrome plating a vehicle wheel surface
US6997787B2 (en) 2000-11-08 2006-02-14 Hayes Lemmerz International, Inc. Process for copper free chrome plating of a vehicle wheel surface
US7140949B2 (en) 2000-11-08 2006-11-28 Hayes Lemmerz International, Inc. Tool and process for chrome plating a vehicle wheel surface
EP1211025A3 (fr) * 2000-11-29 2002-12-04 Hayes Lemmerz International, Inc. Outil et procédé de finissage de la surface des roues de véhicule
US6540450B2 (en) 2000-11-29 2003-04-01 Hayes Lemmerz International, Inc. Tool and process for finishing a vehicle wheel surface
US6733366B2 (en) 2000-11-29 2004-05-11 Hayes Lemmerz International, Inc. Tool and process for finishing a vehicle wheel surface
EP1439018A1 (fr) * 2003-01-17 2004-07-21 Hayes Lemmerz International, Inc. Procédé de fabrication d'une surface décorative plaquée au chrome d'une roue
WO2021004623A1 (fr) * 2019-07-09 2021-01-14 Automotive Components Floby Ab Procédé et appareil de polissage par pression d'un élément de roue

Also Published As

Publication number Publication date
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