US2018077A - Method of forming pressed sheet metal spoked wheels - Google Patents

Method of forming pressed sheet metal spoked wheels Download PDF

Info

Publication number
US2018077A
US2018077A US720873A US72087334A US2018077A US 2018077 A US2018077 A US 2018077A US 720873 A US720873 A US 720873A US 72087334 A US72087334 A US 72087334A US 2018077 A US2018077 A US 2018077A
Authority
US
United States
Prior art keywords
sheet metal
bowl
corrugations
pressed sheet
forming
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
US720873A
Inventor
Maclennan John
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.)
Kelsey Hayes Co
Original Assignee
Kelsey Hayes Co
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 Kelsey Hayes Co filed Critical Kelsey Hayes Co
Priority to US720873A priority Critical patent/US2018077A/en
Application granted granted Critical
Publication of US2018077A publication Critical patent/US2018077A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/26Making other particular articles wheels or the like
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49481Wheel making
    • Y10T29/49492Land wheel
    • Y10T29/49513Compression, e.g., nontension, spoke type wheel making
    • Y10T29/4952Making plural spokes from a single blank

Definitions

  • the invention relates to the manufacture of pressed sheet metal spoked vehicle wheels and more particularly to that type in which the spokes are of channel cross section having closed outer ends and merging at their inner ends into a dished annular portion with a reverse dished or cupped inner portion terminating in a radially inwardly extending bolting-on flange. It is the object of the invention to obtain a method for forming such a structure with such a distribution of drawing and compressive stresses as to avoid objectionable thinning or thickening of the metal in any portion. It is a further object to simplify and to reduce the number of operations required for completing the structure. With these objects in View the invention consists in the method as hereinafter set forth.
  • Fig. 1 is a cross section of the original blank
  • Fig. 2 is a similar view showing the first step of the cupping operation
  • Fig. 3 is a similar view illustrating a succeeding cupping step
  • Fig. 4 illustrates the bowling operation
  • Fig. 5 shows the corrugating of portions of the bowl
  • Fig. 6 is a cross section on line 6-6 of Fig. 5;
  • Fig. 7 is a cross section illustrating the radial corrugation of the bowl
  • Fig. 8 is a plan view thereof.
  • Fig. 9 is a cross section through the wheel.
  • the wheel formed by my improved method is illustrated in Fig. 9 and comprises a cupped center portion A having a radially inwardly extending bolting-on flange B centrally apertured for engaging the wheel hub and provided with the usual bolt apertures C.
  • a reversely dished portion D Surrounding the portion A is a reversely dished portion D and projecting outward from this dished portion are spokes E of inwardly opening channel cross section and which terminate in closed ends F.
  • the ends of the spokes fit within the rim G and are secured thereto preferably by rivets H passing through said rim and the closed spoke ends F.
  • a circular blank I is centrally cupped by a series of successive operations as indicated at I, I Figs. 2 and 3, leaving an outwardly extending annular flange I in the original plane of the blank.
  • the blank is next pressed between dies J and J to bowl the flange I in a reverse direction from the cupped portion I or so as to surround said cupped portion as shown in Fig. 4.
  • the peripheral portion K of the bowl is substantially cylindrical and is of a diameter greater than the diameter of the finished spoked structure.
  • the blank is re-pressed between dies L and L' tocor- 5 rugate the portion intermediate the peripheral edge and the central cupped portion, as'indicated at M, Fig. 5, the deepest portion of the corrugations being shown in the cross section, Fig. 6, which is taken on the oblique line 6i3, Fig. 5.
  • This operation draws in the metal to reduce the radial dimension from the axis of the blank at the point of deepest corrugation and imparting to the bowl a flaring form.
  • the blank is then re-pressed between dies N, N, Fig. 7, which are 15 fashioned to extend the corrugations to the periphery and to reduce the diameter of the latter. This imparts to the structure the form shown in Fig.
  • Y 1 In a method of forming pressed sheet metal spoked wheels, the steps of cupping the central portion of a sheet metal blank leaving a surrounding annular portion in the original plane, 40 bowling the annular flange in a direction to surround said cup, corrugating the bowl thereby decreasing the diameter thereof, forming the convex portion of said corrugations into hollow spokes with closed ends and with the concave portions of the corrugations separating the spokes from each other.
  • a method of forming pressed sheet metal spoked wheels the steps of cupping the central portion of a sheet metal blank leaving a surrounding annular flange portion, bowling the annular flange in a direction to surround said cup, corrugating the bowl with the axis of the corrugations extending radially and at an oblique angle to the axis of the bowl, and further corru-
  • the form of the structure is 25' gating the peripheral portion of the bowl, thereby decreasing the diameter thereof, the convex portion of said corrugations forming hollow spokes with closed ends and the concave portion of the corrugations separating the spokes from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Description

Oct. 22, 1935. J. MMLENNAN 2mm? METHOD OF FORMING PRESSED SHEET METAL SPOKED WHEELS Filed April 16, 1934 Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE METHOD OF FORMING iiitEssEi) SHEET METAL SPOKED WHEELS Application April 16, 1934, Serial No. 720,873
3 Claims.
The invention relates to the manufacture of pressed sheet metal spoked vehicle wheels and more particularly to that type in which the spokes are of channel cross section having closed outer ends and merging at their inner ends into a dished annular portion with a reverse dished or cupped inner portion terminating in a radially inwardly extending bolting-on flange. It is the object of the invention to obtain a method for forming such a structure with such a distribution of drawing and compressive stresses as to avoid objectionable thinning or thickening of the metal in any portion. It is a further object to simplify and to reduce the number of operations required for completing the structure. With these objects in View the invention consists in the method as hereinafter set forth.
In the drawing:
Fig. 1 is a cross section of the original blank;
Fig. 2 is a similar view showing the first step of the cupping operation;
Fig. 3 is a similar view illustrating a succeeding cupping step;
Fig. 4 illustrates the bowling operation;
Fig. 5 shows the corrugating of portions of the bowl;
Fig. 6 is a cross section on line 6-6 of Fig. 5;
Fig. 7 is a cross section illustrating the radial corrugation of the bowl;
Fig. 8 is a plan view thereof.
Fig. 9 is a cross section through the wheel.
The wheel formed by my improved method is illustrated in Fig. 9 and comprises a cupped center portion A having a radially inwardly extending bolting-on flange B centrally apertured for engaging the wheel hub and provided with the usual bolt apertures C. Surrounding the portion A is a reversely dished portion D and projecting outward from this dished portion are spokes E of inwardly opening channel cross section and which terminate in closed ends F. The ends of the spokes fit within the rim G and are secured thereto preferably by rivets H passing through said rim and the closed spoke ends F.
To form this structure from pressed sheet metal and to accomplish the same with a fairly uniform distribution of drawing and compressive stresses, I proceed as follows: A circular blank I is centrally cupped by a series of successive operations as indicated at I, I Figs. 2 and 3, leaving an outwardly extending annular flange I in the original plane of the blank. The blank is next pressed between dies J and J to bowl the flange I in a reverse direction from the cupped portion I or so as to surround said cupped portion as shown in Fig. 4. The peripheral portion K of the bowl is substantially cylindrical and is of a diameter greater than the diameter of the finished spoked structure. In the next operation the blank is re-pressed between dies L and L' tocor- 5 rugate the portion intermediate the peripheral edge and the central cupped portion, as'indicated at M, Fig. 5, the deepest portion of the corrugations being shown in the cross section, Fig. 6, which is taken on the oblique line 6i3, Fig. 5. 10 This operation draws in the metal to reduce the radial dimension from the axis of the blank at the point of deepest corrugation and imparting to the bowl a flaring form. The blank is then re-pressed between dies N, N, Fig. 7, which are 15 fashioned to extend the corrugations to the periphery and to reduce the diameter of the latter. This imparts to the structure the form shown in Fig. 8 where the convex portions 0 of the corrugations form spokes separated by the concave 20 portions 0' and the ends of the convex portions being closed as indicated at 0 The corrugations M which form radially inward extensions of the corrugations O taper to merge into the surface of the bowl. roughly that of the finished center or spider of the wheel above described and may be brought into exact form and exact size by a re-striking or finishing die press operation.
It will be understood that to complete the 30 structure the cupped portion I must be pierced and fashioned to form the bolting-on flange but these operations do not form the subject matter of the present invention and are therefore not described in detail. 35
What I claim as my invention is:
Y 1. In a method of forming pressed sheet metal spoked wheels, the steps of cupping the central portion of a sheet metal blank leaving a surrounding annular portion in the original plane, 40 bowling the annular flange in a direction to surround said cup, corrugating the bowl thereby decreasing the diameter thereof, forming the convex portion of said corrugations into hollow spokes with closed ends and with the concave portions of the corrugations separating the spokes from each other.
2. In a method of forming pressed sheet metal spoked wheels, the steps of cupping the central portion of a sheet metal blank leaving a surrounding annular flange portion, bowling the annular flange in a direction to surround said cup, corrugating the bowl with the axis of the corrugations extending radially and at an oblique angle to the axis of the bowl, and further corru- Thus the form of the structure is 25' gating the peripheral portion of the bowl, thereby decreasing the diameter thereof, the convex portion of said corrugations forming hollow spokes with closed ends and the concave portion of the corrugations separating the spokes from each other.
3. In a method of forming pressed. sheet metal spoked wheels, thesteps of cupping the central portion of a sheet metal blank, leaving a surrounding annular flange portion, bowling the annular flange in 'a direction to surround said cup, the peripheral portion of the bowl being substantially parallel to the axis thereof with a rounded portion intermediate said peripheral portion and the cupped portion, corrugating the rounded portion of the bowl with the axis of the corrugations extending radially at an oblique angle to the axis of the bowl, further corrugating the peripheral portion of the bowl with the axis of the corrugations substantiallv'parallelto the axis of the bowl, the radially'projec'ting portions of said corrugations forming 'hollow spokes with 7 closed outer ends and the concave portions of the 10 corrugations forming open spaces between said spokes.
' JOHN MACLENNAN.
US720873A 1934-04-16 1934-04-16 Method of forming pressed sheet metal spoked wheels Expired - Lifetime US2018077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US720873A US2018077A (en) 1934-04-16 1934-04-16 Method of forming pressed sheet metal spoked wheels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US720873A US2018077A (en) 1934-04-16 1934-04-16 Method of forming pressed sheet metal spoked wheels

Publications (1)

Publication Number Publication Date
US2018077A true US2018077A (en) 1935-10-22

Family

ID=24895597

Family Applications (1)

Application Number Title Priority Date Filing Date
US720873A Expired - Lifetime US2018077A (en) 1934-04-16 1934-04-16 Method of forming pressed sheet metal spoked wheels

Country Status (1)

Country Link
US (1) US2018077A (en)

Similar Documents

Publication Publication Date Title
US3080644A (en) Method of making a wheel
US2551783A (en) Vehicle wheel
US2139833A (en) Method of forming rims of nonsymmetrical cross-sectional contour
US1741716A (en) Method of securing wheel disks to rims
US3264719A (en) Method for the manufacture of wheels
US2291393A (en) Method of forming wheel rims
US1809605A (en) Method of making wheel rims
JP3933143B2 (en) Wheel manufacturing method.
US2018077A (en) Method of forming pressed sheet metal spoked wheels
US2247002A (en) Method of making dished articles
US2084814A (en) Method of forming brake drums
US2133144A (en) Method of manufacturing wheels
US2330228A (en) Die for drawing sheet metal articles
US3228097A (en) Method for making rims
US1897375A (en) Wheel
US2083229A (en) Method of making one-piece spoke spiders
US1711833A (en) Method of producing wheel bodies
US2097101A (en) Method of forming pressed sheet metal spoked wheels
US2088992A (en) Method of making vehicle wheels
US2018076A (en) Method of forming pressed sheet metal spoked wheels
US2316029A (en) Method of making brake drums
US2018078A (en) Method of forming pressed sheet metal spoked wheels
US2159880A (en) Method of making a vehicle wheel
US2162735A (en) Method of making a wheel
US2308615A (en) Wheel cover