US3926025A - Method of producing special wheel rims - Google Patents

Method of producing special wheel rims Download PDF

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Publication number
US3926025A
US3926025A US484157A US48415774A US3926025A US 3926025 A US3926025 A US 3926025A US 484157 A US484157 A US 484157A US 48415774 A US48415774 A US 48415774A US 3926025 A US3926025 A US 3926025A
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US
United States
Prior art keywords
blank
spring ring
ring groove
wall thickness
rim
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.)
Expired - Lifetime
Application number
US484157A
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English (en)
Inventor
Paul B Schroder
Gunter Pollkotter
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Leifeld and Co GmbH
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Leifeld and Co GmbH
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 Leifeld and Co GmbH filed Critical Leifeld and Co GmbH
Application granted granted Critical
Publication of US3926025A publication Critical patent/US3926025A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B21D53/30—Making other particular articles wheels or the like wheel rims
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49481—Wheel making
    • Y10T29/49492—Land wheel
    • Y10T29/49524—Rim making

Definitions

  • German Patent 1,152,086 first to form, by starting from cylindrical sheet metal rings, an axially shortened cross-sectional structure of the rim from a sheet metal ring of a corresponding width, then to reduce the wall thickness of this profile in the area of the base of the rim in axial direction by means of a known per se stretch drawing operation, and at the same time to bring this profile to its final axial dimensions.
  • a known per se stretch drawing operation it is of disadvantage in this known method that, although the wall thickness of the base of the rim can be stretched or drawn to the desired degree, the wheel flange is automatically held at a greater wall thickness than that of the spring ring groove such that there is thus still present a substantial amount of excess material.
  • the width of the complete special rim cannot be adjusted precisely because thickness tolerances in the'sheet metal exhibit themselves as longitudinal tolerances in a more than proportional manner during the stretching or drawing of the final profile, which tolerances affect the nominal width of opening of the special rim.
  • the conventional method according to the abovementioned German patent does not allow to produce neither a special rim having an exactly defined width, nor a special rim wherein optimum use is made of the material.
  • the method according to the invention provides a reduction of weight in the order of from 20 to 30%, although the conventional methods have been known for a long time and considered as not capable of being improved any further.
  • the special rims produced in accordance with the present method allow to reduce the weight of the unsuspended masses and, thus, they provide an improvement of the running qualities of trucks.
  • the above-mentioned object is solved by the provision of a special rim of the slant shoulder type having an optimum profile of the wall thickness, namely with the provision of a profile of equal strength and, therefore, of minimum weight. Further, due to reduced quantity of high-quality material employed, the novel special rims can be produced in' a particularly economical fashion.
  • the object of the invention is solved by first recessing the spring ring groove, then stretching or drawing the blank to its desired wall thickness, and thereafter expanding the wheel flange.
  • the stretching operation of the blank there may be formed a recess as a support for the spring ring adjacent the spring ring groove by means of a spinning operation, and in order to define a slant shoulder in front of the wheel flange, the stretching of the blank can be performed in a pair of roll passes, whereb'y in the course of the second pass the slant shoulder is formed in front of the wheel flange.
  • a total of the reduction of the wall thickness of more than 20% can be realized.
  • FIG. 1 is a sectional view of a cylindricyl sheet metal shell forming the blank
  • FIG. 2 is a view of the sheet metal blank with the spring ring groove formed therein;
  • FIG. 3 is a view of the workpiece of FIG. 2 having a recess as a support for the spring ring formed therein and with the sheet metal shell being stretched;
  • FIG. 4 shows the rim body as stretched in the course of a second roll pass after the formation of the slant shoulder
  • FIG. 5 shows the final special rim of the slant shoulder type with the wheel flange erected.
  • the method according to the invention is based upon the measure of starting from a material having a thickness which is greater by about 15% than the desired minimum wall thickness in the base of the spring ring groove. Then, in a first step the spring ring groove is formed, which operation results in a reduction of the wall thickness of about 15% in the base of the spring ring groove which is subjected to the greatest load, such that the desired wall thickness is set at this point of the special rim.
  • the recessing of the spring ring groove per se corresponds to a spinning operation which is described in greater detail in the abovementioned German patent application 2,053,005 laid open to public inspection.
  • a recess as a support for the spring ring is formed adjacent the spring ring groove by a spinning step, whereupon, in a further roll pass, the sheet metal blank is reduced or stretched on the whole, whereby a thickness reduction of more than 15% is obtained since the wheel flange which is subsequently formed from the material after this stretching operation, is intended to have a thickness smaller than that of the base of the spring ring groove as the bending stress of the wheel flange is lower than the stress, produced in the sharply curved spring ring groove.
  • a third step of operation the region of the blank which finally forms the base of the rim, is further stretched to the desired dimension while providing optimum strength, whereby such stretching operation in front of the final wheel flange terminates in an inclined surface of 5 of inclination corresponding to the configuration of a slant shoulder. This transition can be easily provided for by a corresponding retraction of the spinning rolls during the stretching operation.
  • the wheel flange is raised or erected.
  • Such erection of the wheel flange has been described in greater detail e.g. in the periodical Blech, No. 1, volume 1962, page ll, so that it need not be explained any further.
  • the second step of operation of the stretching of the sheet metal blank after the effected bending up within the spring ring groove may be performed along with the third step of operatiom of the reduction of the rim base and the formation of the slant shoulder with a single chucking step of the workpiece.
  • the workpiece must then be clarr ed in an external chuck.
  • the first step of operation in which the spring ring groove is formed in the rim need not necessarily be conducted during the same chucking period as the second and third steps of operation.
  • the method according to the invention actually provides the possibility of producing a special rim having wall thicknesses which may be adjusted as desired at every position thereof, whereby such wall thickness is at a maximum at the points where the highest stresses are applied and whereby the thickness of these wall portions may be adjusted in consideration of the stresses present by including the impact (notch) stresses.
  • the greatest wall thickness is obtained in the area of the base of the spring ring groove, while the next greatest wall thickness is obtained in the wheel flange and the minimum wall thickness occurs in the region of the base of the rim.
  • any irregularities in the starting material merely tend to vary the length of the flange which, in turn, can be adjusted in the desired way by a finishing operation.
  • the irregularities in the starting material may be left out of consideration for the final weight and for the strength characteristics of the special rim, because such irregularities are automatically compensated for in the method according to the invention.
  • the economical advantages of the present method in a manner being surprising to the expert, do not only reside in the fact that improved special rims of the slant shoulder type may be produced, but also in the fact that a substantially lesser quantity of material is required, whereas, additionally, the material employed may show greater tolerances of dimension as compared with the known prior art.
  • the method according to the invention can be attributed a surprising technical advance.
  • a spinning process for making a special wheel rim from a metal cylindrical blank said wheel rim having a recessed spring ring groove on one side, a central rim section, a slant shoulder and a raised wheelflange on the other side, said method comprising the steps of: spin forming a spring ring groove on one side of the metal blank to reduce the thickness of said initial metal blank and to form said groove with a predetermined wall thickness and with its final wheel spring groove shape, stretch drawing the remainder of the blank to reduce its cross-sectional thickness from said predetermined wall thickness and to extend the axial length of the remainder of said blank, spin drawing a slant shoulder on the other side of the blank, and spin forming the other side of the stretched metal blank radially outwardly to form the raised wheel flange having a wall thickness less than said predetermined wall thickness for the spring ring groove.
  • a method in accordance with claim 1 including the further step of: spin forming a recess adjacent the spring ring groove during the step of stretch drawing the remainder of the blank.
  • step of stretch drawing includes a first stretch drawing pass and a second pass during which the slant shoulder also is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US484157A 1973-08-28 1974-06-28 Method of producing special wheel rims Expired - Lifetime US3926025A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2343247A DE2343247C2 (de) 1973-08-28 1973-08-28 Verfahren zur Herstellung von Schrägschulterfelgen

Publications (1)

Publication Number Publication Date
US3926025A true US3926025A (en) 1975-12-16

Family

ID=5890867

Family Applications (1)

Application Number Title Priority Date Filing Date
US484157A Expired - Lifetime US3926025A (en) 1973-08-28 1974-06-28 Method of producing special wheel rims

Country Status (7)

Country Link
US (1) US3926025A (nl)
JP (1) JPS5410348B2 (nl)
AR (1) AR203208A1 (nl)
DE (1) DE2343247C2 (nl)
FR (1) FR2242171B1 (nl)
GB (1) GB1441049A (nl)
NL (1) NL171965C (nl)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650257A (en) * 1984-10-29 1987-03-17 Woods Luther L Heavy equipment tire rim
US5235837A (en) * 1991-04-19 1993-08-17 Compression Technologies, Inc. Fabrication of pressure vessels
US5598729A (en) * 1994-10-26 1997-02-04 Tandem Systems, Inc. System and method for constructing wall of a tube
US5832609A (en) * 1996-04-05 1998-11-10 Hayes Lemmerz International, Inc. Method for producing a variable thickness rim for a vehicle wheel
US6212926B1 (en) 1999-04-21 2001-04-10 Tandem Systems, Inc. Method for spin forming a tube
US20080141532A1 (en) * 2006-10-30 2008-06-19 De Souza Manso Francisco Anton Manufacturing Process for a Tubeless Wheel Rim for Off Road Vehicles, Rim Obtained Through an Off-Road Vehicle Process
US20090126443A1 (en) * 2004-08-06 2009-05-21 Fontijne Grotnes B.V. Method and apparatus for manufacturing a rim bed by means of cold forming
US20100129015A1 (en) * 2007-05-23 2010-05-27 Uwe Nestlen Method for producing a component made of metal, particularly for a head bearing housing of a spring strut, and such a component

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2651458A1 (de) * 1976-11-11 1978-05-18 Bohner & Koehle Verfahren zum herstellen von insbesondere ungeteilten felgen
JPS53103972A (en) * 1977-02-24 1978-09-09 Washiarumi Kk Preparation of rim parts of wheel for vehicle
DE2713454A1 (de) * 1977-03-26 1978-09-28 Bohner & Koehle Verfahren zum herstellen von felgen
JPS59109466A (ja) * 1982-12-16 1984-06-25 Nissan Motor Co Ltd 主として曲げ荷重を受ける部位に用いられる自動車用メンバの製造方法
JPS6139083U (ja) * 1984-08-17 1986-03-12 関東日邦ミシン株式会社 ミシンの縫製用ガイド
DE3445942A1 (de) * 1984-12-17 1986-07-10 KLIFA - Fahrzeugteile GmbH & Co, 6800 Mannheim Verfahren und vorrichtung zum herstellen einer mehrrilligen antriebsscheibe aus blech
GB9306550D0 (en) * 1993-03-30 1993-05-26 Fortaye Ltd Wheel rim

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255518A (en) * 1962-10-02 1966-06-14 Motor Wheel Corp Method of making a wheel rim
US3258833A (en) * 1960-12-15 1966-07-05 Kronprinz Ag Method and apparatus for making rims for vehicle wheels having pneumatic tires

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053005B2 (de) * 1970-10-28 1973-05-30 Leifeld & Co, 4730 Ahlen Verfahren und vorrichtung zur herstellung von schraegschulterfelgen fuer lkw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258833A (en) * 1960-12-15 1966-07-05 Kronprinz Ag Method and apparatus for making rims for vehicle wheels having pneumatic tires
US3255518A (en) * 1962-10-02 1966-06-14 Motor Wheel Corp Method of making a wheel rim

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650257A (en) * 1984-10-29 1987-03-17 Woods Luther L Heavy equipment tire rim
US5235837A (en) * 1991-04-19 1993-08-17 Compression Technologies, Inc. Fabrication of pressure vessels
US5598729A (en) * 1994-10-26 1997-02-04 Tandem Systems, Inc. System and method for constructing wall of a tube
US5845527A (en) * 1994-10-26 1998-12-08 Tandem Systems, Inc. System and method for constricting wall of a tube
US5832609A (en) * 1996-04-05 1998-11-10 Hayes Lemmerz International, Inc. Method for producing a variable thickness rim for a vehicle wheel
US6212926B1 (en) 1999-04-21 2001-04-10 Tandem Systems, Inc. Method for spin forming a tube
US20090126443A1 (en) * 2004-08-06 2009-05-21 Fontijne Grotnes B.V. Method and apparatus for manufacturing a rim bed by means of cold forming
US20080141532A1 (en) * 2006-10-30 2008-06-19 De Souza Manso Francisco Anton Manufacturing Process for a Tubeless Wheel Rim for Off Road Vehicles, Rim Obtained Through an Off-Road Vehicle Process
US20100129015A1 (en) * 2007-05-23 2010-05-27 Uwe Nestlen Method for producing a component made of metal, particularly for a head bearing housing of a spring strut, and such a component

Also Published As

Publication number Publication date
NL171965B (nl) 1983-01-17
FR2242171B1 (nl) 1978-05-12
JPS5051067A (nl) 1975-05-07
FR2242171A1 (nl) 1975-03-28
NL171965C (nl) 1983-06-16
AR203208A1 (es) 1975-08-22
GB1441049A (en) 1976-06-30
DE2343247C2 (de) 1989-08-10
DE2343247A1 (de) 1975-03-20
NL7409658A (nl) 1975-03-04
JPS5410348B2 (nl) 1979-05-04

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