US3534419A - Method of making blind sealing rivets - Google Patents

Method of making blind sealing rivets Download PDF

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Publication number
US3534419A
US3534419A US704477A US3534419DA US3534419A US 3534419 A US3534419 A US 3534419A US 704477 A US704477 A US 704477A US 3534419D A US3534419D A US 3534419DA US 3534419 A US3534419 A US 3534419A
Authority
US
United States
Prior art keywords
wall
head
stem
rivet
rivets
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
US704477A
Other languages
English (en)
Inventor
Robert R Deans
Anthony M Putetti
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.)
Scovill Inc
Original Assignee
Scovill 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 Scovill Inc filed Critical Scovill Inc
Application granted granted Critical
Publication of US3534419A publication Critical patent/US3534419A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21K1/58—Making machine elements rivets
    • B21K1/60—Making machine elements rivets hollow or semi-hollow rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel
    • 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
    • B21K1/58—Making machine elements rivets
    • B21K1/62—Making machine elements rivets special rivets, e.g. with electrical contacts
    • 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
    • Y10T29/49915—Overedge assembling of seated part
    • Y10T29/49917—Overedge assembling of seated part by necking in cup or tube wall
    • 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
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49934—Inward deformation of aperture or hollow body wall by axially applying force
    • 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
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/49943—Riveting

Definitions

  • the present method requires only one automatic machine wherein the complete rivet may be formed without intermediate annealing.
  • the metal is formed before introducing the stem, into a long tubular shape where the inner portion around the closed end wall is of reduced diameter substantially the same as the finished rivet, so that it is only necessary to force the shell wall inwardly against the stem with only minimal further elongation and without any extrusion around the head of the pulling stem.
  • the term long as applied to the tubular shape is intended to define a length of the order of two to four times the outside diameter.
  • FIG. 1 is an elevation of the original blank as may be cut from a rod
  • FIG. 2 shows the blank partially in section after a preforming step
  • FIG. 3 is a central vertical section of the long tubular shape as drawn or extruded from the blank of FIG. 2, with the pulling stem in position to be inserted;
  • FIG. 4 is a sectional view showing the pulling stem in place and the beginning of the closing operation which forces the sidewall of the tubular shape against the stem;
  • FIG. 5 shows the completion of the closing operation in section
  • FIG. 6 is a sectional view showing the head forming step
  • FIGS. 7 and 8 are sectional views showing the manner of using such a closed end rivet before and after the upsetting operation.
  • the blank 10 may first be formed into the shape shown in FIG. 2 where it has rounded corners 11 and a recess 12 in one end face.
  • this blank is drawn or extruded into the generally tubular shape shown in FIG. 3, having a long cylindrical sidewall 13, a cylindrical bore 14 and a closed inner end wall 15.
  • the inner end portion 16 of this shape is of reduced outside diameter, the axial extent of such reduced diameter portion being at least as great as the thickness of the end wall 15 and preferably also enough to extend further over head 17 of a pulling stem 18.
  • a bending or closing tool 19 is pushed over the wall 13 to force this wall inwardly against the stem 18.
  • a cylindrical hole 20 in the tool 19 is sized to fit around the reduced end portion 16 and the end of this tool around the opening 20 is flared as indicated at 21 so as to come into engagement with a corner 22 of the wall 13, it being noted that the beveled surface 23 between wall 13 and the reduced end 16 has a somewhat greater angle than the flare 21 0f the forming tool.
  • the stroke of the tool 19 is such that it will end at about the position shown in FIG. 5 leaving a bellmouthed end 24 of the same outside diameter as the original wall 13.
  • a rivet head 25 is formed by a suitable punch 26 and by 27.
  • the end of punch 26 is so shaped as to form an undercut 28 on the inner surface of the rivet head.
  • the forming tool 19 When the forming tool 19 starts to operate, it will bend the wall 13 inwardly so as to form an internal shoulder 29 extending at least partially into a neck 30 and engage behind head 17 of the pulling stem.
  • a blind riveting tool which grips the protruding part of stem 18 and applies pressure to the rivet head 25, will upset that portion of the rivet wall outwardly of the pulling stem head 17, to form a bulge 32 and provide a leakproof joint between the rivet and the plates 31.
  • a method of making a blind sealing rivet without intermediate annealing steps comprising the steps of (a) cold-forming a metal blank into a generally tubular shape having a closed inner end wall, a long cylindrical sidewall, and a long cylindrical bore of substantially uniform diameter;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Forging (AREA)
US704477A 1968-02-09 1968-02-09 Method of making blind sealing rivets Expired - Lifetime US3534419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70447768A 1968-02-09 1968-02-09

Publications (1)

Publication Number Publication Date
US3534419A true US3534419A (en) 1970-10-20

Family

ID=24829689

Family Applications (1)

Application Number Title Priority Date Filing Date
US704477A Expired - Lifetime US3534419A (en) 1968-02-09 1968-02-09 Method of making blind sealing rivets

Country Status (4)

Country Link
US (1) US3534419A (de)
DE (1) DE1905400A1 (de)
FR (1) FR2001674A1 (de)
GB (1) GB1252653A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953906A (en) * 1968-10-03 1976-05-04 Brown Clarence K Fastener assembly
US4069738A (en) * 1976-02-09 1978-01-24 Caterpillar Tractor Co. Insulation retainer and attachment method therefor
US4189978A (en) * 1976-12-10 1980-02-26 Usm Corporation Fastener
US4261245A (en) * 1976-12-10 1981-04-14 Usm Corporation Fastener
US4281581A (en) * 1979-09-24 1981-08-04 Jackson Liam R High-strength blind rivet
US4293258A (en) * 1977-10-04 1981-10-06 Microdot Inc. Self drilling blind rivet
US4509245A (en) * 1982-04-22 1985-04-09 Bleistiftmaschinenfabrik Dipl. Ing. Karl Zuber GmbH & Co. KG Apparatus for securing parts on elongated writing instruments, in particular for securing an eraser for a sheath receiving it on a pencil
US4836728A (en) * 1983-11-15 1989-06-06 Emhart Industries, Inc. Blind-riveting assembly
US20150192161A1 (en) * 2012-10-31 2015-07-09 Newfrey Llc Blind rivet and sealing structure using same
CN108626225A (zh) * 2017-03-24 2018-10-09 福特全球技术公司 头部直径减少的铆钉

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015100424A1 (de) * 2015-01-13 2016-07-14 Newfrey Llc Verfahren zur Herstellung eines endverschlossenen Blindniets und endverschlossener Blindniet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1169642A (en) * 1914-09-17 1916-01-25 C M Heeter Sons & Company Inc Method of making well-tools.
US2040939A (en) * 1931-12-01 1936-05-19 Huxon Holding Corp Method of making rivets
GB613882A (en) * 1946-06-15 1948-12-03 United Shoe Machinery Corp Improvements in or relating to hollow rivets and the setting thereof
US2779955A (en) * 1951-11-07 1957-02-05 United Shoe Machinery Corp Method of extending a rivet blank around a headed mandril stem
US3300798A (en) * 1964-03-10 1967-01-31 Textron Ind Inc Blind sealing rivet and method of making the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1169642A (en) * 1914-09-17 1916-01-25 C M Heeter Sons & Company Inc Method of making well-tools.
US2040939A (en) * 1931-12-01 1936-05-19 Huxon Holding Corp Method of making rivets
GB613882A (en) * 1946-06-15 1948-12-03 United Shoe Machinery Corp Improvements in or relating to hollow rivets and the setting thereof
US2779955A (en) * 1951-11-07 1957-02-05 United Shoe Machinery Corp Method of extending a rivet blank around a headed mandril stem
US3300798A (en) * 1964-03-10 1967-01-31 Textron Ind Inc Blind sealing rivet and method of making the same

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953906A (en) * 1968-10-03 1976-05-04 Brown Clarence K Fastener assembly
US4069738A (en) * 1976-02-09 1978-01-24 Caterpillar Tractor Co. Insulation retainer and attachment method therefor
US4359813A (en) * 1976-12-10 1982-11-23 Usm Corporation Method of fastening
US4261245A (en) * 1976-12-10 1981-04-14 Usm Corporation Fastener
US4189978A (en) * 1976-12-10 1980-02-26 Usm Corporation Fastener
US4293258A (en) * 1977-10-04 1981-10-06 Microdot Inc. Self drilling blind rivet
US4281581A (en) * 1979-09-24 1981-08-04 Jackson Liam R High-strength blind rivet
US4509245A (en) * 1982-04-22 1985-04-09 Bleistiftmaschinenfabrik Dipl. Ing. Karl Zuber GmbH & Co. KG Apparatus for securing parts on elongated writing instruments, in particular for securing an eraser for a sheath receiving it on a pencil
US4836728A (en) * 1983-11-15 1989-06-06 Emhart Industries, Inc. Blind-riveting assembly
US20150192161A1 (en) * 2012-10-31 2015-07-09 Newfrey Llc Blind rivet and sealing structure using same
EP2916016A4 (de) * 2012-10-31 2016-06-01 Newfrey Llc Blindniet und dichtungsanordnung damit
US10041522B2 (en) * 2012-10-31 2018-08-07 Newfrey Llc Blind rivet and sealing structure using same
CN108626225A (zh) * 2017-03-24 2018-10-09 福特全球技术公司 头部直径减少的铆钉
US10385900B2 (en) * 2017-03-24 2019-08-20 Ford Global Technologies, Llc Reduced diameter head rivet
CN108626225B (zh) * 2017-03-24 2022-04-29 福特全球技术公司 头部直径减少的铆钉

Also Published As

Publication number Publication date
FR2001674A1 (de) 1969-09-26
DE1905400A1 (de) 1969-08-28
GB1252653A (de) 1971-11-10

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