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US20080016670A1 - Flow forming connection of metallic parts and resultant part assembly - Google Patents

Flow forming connection of metallic parts and resultant part assembly Download PDF

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Publication number
US20080016670A1
US20080016670A1 US11/488,959 US48895906A US2008016670A1 US 20080016670 A1 US20080016670 A1 US 20080016670A1 US 48895906 A US48895906 A US 48895906A US 2008016670 A1 US2008016670 A1 US 2008016670A1
Authority
US
United States
Prior art keywords
metallic
metallic part
parts
central axis
flow 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.)
Abandoned
Application number
US11/488,959
Other languages
English (en)
Inventor
Thomas Meier
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.)
Transform Automotive LLC
Original Assignee
Transform Automotive LLC
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 Transform Automotive LLC filed Critical Transform Automotive LLC
Priority to US11/488,959 priority Critical patent/US20080016670A1/en
Assigned to TRANSFORM AUTOMOTIVE LLC reassignment TRANSFORM AUTOMOTIVE LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEIER, THOMAS
Priority to PCT/US2007/073582 priority patent/WO2008011365A2/fr
Publication of US20080016670A1 publication Critical patent/US20080016670A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49909—Securing cup or tube between axially extending concentric annuli
    • Y10T29/49913—Securing cup or tube between axially extending concentric annuli by constricting outer annulus

Definitions

  • This invention relates to a method and apparatus for mechanically connecting metallic parts to each other by flow forming and also relates to the resultant part assembly.
  • Metallic parts utilized in torque transmission such as vehicle transmissions, transfer cases, couplings and other torque transmitting assemblies have previously been made as individual parts by flow forming which involves rotating a part around a central axis about which one or more rotary flow forming tools are rotated and moved axially to form the part about a central mandrel.
  • One object of the present invention is to provide an improved method for mechanically connecting metallic parts to each other.
  • the method for mechanically connecting metallic parts to each other in accordance with the invention is performed by rotating first and second metallic parts with each other about a central axis with the first metallic part having an outer locking formation.
  • a flow forming tool is rotated about a tool axis at a location spaced radially outward from the central axis, and the rotating flow forming tool is moved axially along the central axis to flow form the second metallic part around the first metallic part in a mechanically interlocking relationship with the outer locking formation of the first metallic part.
  • the outer locking formation of the first mechanical part as disclosed includes circumferentially spaced locking projections about which the second metallic part is flow formed to provide both circumferential and axial mechanical interlocking of the parts to each other.
  • the first and second metallic parts may be made of different types of metals, have different heat treatments, have different compositions, have blanks made by different processes or combinations of the former.
  • a plurality of flow forming tools may be rotated about associated axes that are spaced radially outward from the central axis, and the rotating flow forming tools are moved together axially along the central axis to provide the flow forming of the second metallic part around the first metallic part in its mechanically interlocking relationship with the outer locking formation of the first metallic part.
  • Another object of the present invention is to provide improved apparatus for mechanically connecting metallic parts to each other.
  • the apparatus for mechanically connecting metallic parts to each other in accordance with the invention includes a spindle for rotatably mounting first and second metallic parts about a central axis with the first metallic part having an outer locking formation.
  • a flow former includes at least one rotary flow forming tool mounted for rotation about a tool axis at a location spaced radially outward from the central axis. The flow forming tool is mounted for axial movement along the central axis during the rotation thereof to flow form the second metallic part around the first metallic part in a mechanically interlocking relationship with the outer locking formation of the first metallic part.
  • the spindle of the apparatus includes a mandrel and a tailstock between which the first and second metallic parts are axially clamped and supported for the rotation about the central axis.
  • the apparatus may be constructed with the flow former including a plurality of flow forming tools that are rotated about associated axes spaced radially outward from the central axis and that are moved axially along the central axis to provide the flow forming of the second metallic part around the first metallic part.
  • Another object of the present invention is to provide an improved metallic part assembly.
  • the metallic part assembly of the invention includes a first metallic part that has a central axis and an outer locking formation including locking projections extending outwardly from and spaced about the central axis.
  • a second metallic part of the assembly is flow formed around the outer locking formation of the first metallic part and located on opposite axial sides and circumferentially between the locking projections so as to mechanically interlock the first and second metallic parts to each other.
  • the first and second metallic parts may be made of different metals, have different heat treatments, have different compositions, start with blanks made by different processes, or have combinations of the former.
  • FIG. 1 is a sectional view taken through apparatus of the invention for providing the metallic part connecting method thereof and the resultant metallic part assembly of the invention.
  • FIG. 2 is an axial view taken along the direction of line 2 - 2 in FIG. 1 to illustrate a first metallic part that is connected to a second metallic part by the apparatus and method.
  • FIG. 3 is a sectional view taken along the direction of line 2 - 2 to further illustrate the construction of the first metallic part.
  • FIG. 4 is a half sectional view illustrating the manner in which the second metallic part is flow formed around the first metallic part illustrated in FIGS. 2 and 3 to provide the metallic part assembly of the invention.
  • FIG. 5 is a partial axial view taken along the direction of line 5 - 5 in FIG. 4 to further illustrate the construction of the metallic part assembly.
  • apparatus 10 for providing metallic part connection in accordance with the invention is utilized to perform the method thereof which provides the resultant metallic part assembly 12 shown in FIGS. 4 and 5 .
  • the metallic part connecting method, the apparatus 10 and the resultant metallic part assembly 12 will all be described in an integrated manner to facilitate an understanding of all aspects of the invention.
  • the apparatus 10 includes a spindle 14 rotatable about a central axis A.
  • the spindle 14 includes a headstock 16 that mounts a mandrel 18 and also includes a tailstock 20 .
  • First and second metallic parts 22 and 24 are mounted by the spindle 14 by axial clamping between the mandrel 18 and tailstock 20 . Rotation of the spindle 14 thus rotates the first and second metallic parts 22 and 24 about the central axis A.
  • the first metallic part 22 as shown in FIGS. 2 and 3 has a generally annular shape and includes an outer locking formation 26 extending about the central axis A and provided by circumferentially spaced locking projections 28 that project radially in an outward direction.
  • These locking projections 28 may be formed as gear teeth, splines or other projections such as between grooves formed in the inner metallic part.
  • the apparatus also includes a flow former 30 that includes at least one flow forming tool 32 .
  • a flow former 30 that includes at least one flow forming tool 32 .
  • Each flow forming tool 32 rotates about an associated axis a and is located outwardly from the central axis A adjacent the outer extremity of the mandrel 18 .
  • the rotating flow forming tools 32 are moved axially along the central axis as shown by arrows b to provide flow forming of the second metallic part 24 over the outer locking formation 26 of the first metallic part 22 .
  • This flow forming mechanically interlocks the first and second parts 22 and 24 to each other to thereby provide the part assembly 12 illustrated in FIGS. 4 and 5 .
  • the second metallic part 24 has portions 24 ′ and 24 ′′ that are located on axial opposite axial sides of the outer locking formation projections 28 ( FIG. 4 ) of the first metallic part 22 and has radially inwardly extending portions 34 ( FIG. 5 ) that are located circumferentially between the outer locking formation projections 28 .
  • both axial and circumferential innerconnection of the metallic parts to each other secures their fixed relationship to each other.
  • the first and second metallic parts 22 and 24 may be made from different types of metals such as steel, zinc, aluminum, etc., may have different heat treatments to provide the required properties for each part, may have different compositions to also provide the required properties for each part, may be formed from blanks made by different processes such as rolling, casting, forming and machining, and may be combinations of the former.
  • connection formations 34 are illustrated as holes that may be machined or otherwise initially formed upon the manufacture of the part.
  • connection formations 34 can be more easily provided such as by machining before the flow form connection of the parts to each other as the part assembly.
  • the resultant part assembly construction cannot be provided by a unitary metallic component because the connection formations cannot be machined or otherwise provide in the part configurations involved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
US11/488,959 2006-07-19 2006-07-19 Flow forming connection of metallic parts and resultant part assembly Abandoned US20080016670A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/488,959 US20080016670A1 (en) 2006-07-19 2006-07-19 Flow forming connection of metallic parts and resultant part assembly
PCT/US2007/073582 WO2008011365A2 (fr) 2006-07-19 2007-07-16 Liaison par fluoformage d'éléments métalliques et assemblage d'éléments ainsi obtenu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/488,959 US20080016670A1 (en) 2006-07-19 2006-07-19 Flow forming connection of metallic parts and resultant part assembly

Publications (1)

Publication Number Publication Date
US20080016670A1 true US20080016670A1 (en) 2008-01-24

Family

ID=38957520

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/488,959 Abandoned US20080016670A1 (en) 2006-07-19 2006-07-19 Flow forming connection of metallic parts and resultant part assembly

Country Status (2)

Country Link
US (1) US20080016670A1 (fr)
WO (1) WO2008011365A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8444522B2 (en) 2010-04-27 2013-05-21 Metal Forming & Coining Corporation Flow-formed differential case assembly
US8628444B2 (en) 2010-07-01 2014-01-14 Metal Forming & Coining Corporation Flow-formed differential case assembly
DE102013006150B4 (de) 2013-04-10 2021-09-30 Webo Werkzeugbau Oberschwaben Gmbh Bauteil mit Innen- und Außenverzahnung sowie Verfahren zur Herstellung des Bauteils und Werkzeugsatz zur Ausführung des Verfahrens

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707823A (en) * 1949-08-03 1955-05-10 Gen Electric Co Ltd Method of making wire joints by cold pressure welding
US2707824A (en) * 1951-09-28 1955-05-10 Gen Electric Co Ltd Method of making cold-weld joints
US2894323A (en) * 1953-02-20 1959-07-14 Gen Electric Co Ltd Pressure welding
US2926030A (en) * 1955-08-18 1960-02-23 Kelsey Hayes Co Tube joint structure and method of making same
US3090116A (en) * 1957-11-04 1963-05-21 Gen Electric Co Ltd Method of cold bonding metallic parts
US3642311A (en) * 1969-05-09 1972-02-15 Gulf Oil Corp Torque-transmitting joint
US20040074327A1 (en) * 2002-03-05 2004-04-22 Huber David P. Annulus gear and drive shell

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736347A1 (fr) * 1995-04-06 1996-10-09 Samtech Corporation Procédé pour la fabrication d'un élément de transmission denté

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707823A (en) * 1949-08-03 1955-05-10 Gen Electric Co Ltd Method of making wire joints by cold pressure welding
US2707824A (en) * 1951-09-28 1955-05-10 Gen Electric Co Ltd Method of making cold-weld joints
US2894323A (en) * 1953-02-20 1959-07-14 Gen Electric Co Ltd Pressure welding
US2926030A (en) * 1955-08-18 1960-02-23 Kelsey Hayes Co Tube joint structure and method of making same
US3090116A (en) * 1957-11-04 1963-05-21 Gen Electric Co Ltd Method of cold bonding metallic parts
US3642311A (en) * 1969-05-09 1972-02-15 Gulf Oil Corp Torque-transmitting joint
US20040074327A1 (en) * 2002-03-05 2004-04-22 Huber David P. Annulus gear and drive shell
US7021171B2 (en) * 2002-03-05 2006-04-04 Metal Forming & Coining Corporation Annulus gear and drive shell

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8444522B2 (en) 2010-04-27 2013-05-21 Metal Forming & Coining Corporation Flow-formed differential case assembly
US8628444B2 (en) 2010-07-01 2014-01-14 Metal Forming & Coining Corporation Flow-formed differential case assembly
US9039560B2 (en) 2010-07-01 2015-05-26 Metal Forming & Coining Corporation Flow-formed differential case assembly
DE102013006150B4 (de) 2013-04-10 2021-09-30 Webo Werkzeugbau Oberschwaben Gmbh Bauteil mit Innen- und Außenverzahnung sowie Verfahren zur Herstellung des Bauteils und Werkzeugsatz zur Ausführung des Verfahrens

Also Published As

Publication number Publication date
WO2008011365A2 (fr) 2008-01-24
WO2008011365A3 (fr) 2008-03-13

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Legal Events

Date Code Title Description
AS Assignment

Owner name: TRANSFORM AUTOMOTIVE LLC, MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MEIER, THOMAS;REEL/FRAME:018069/0928

Effective date: 20060714

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION