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US20100232907A1 - Self-tapping blind rivet - Google Patents

Self-tapping blind rivet Download PDF

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Publication number
US20100232907A1
US20100232907A1 US12/377,346 US37734607A US2010232907A1 US 20100232907 A1 US20100232907 A1 US 20100232907A1 US 37734607 A US37734607 A US 37734607A US 2010232907 A1 US2010232907 A1 US 2010232907A1
Authority
US
United States
Prior art keywords
rivet
mandrel
tip
shank
blind rivet
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
US12/377,346
Other languages
English (en)
Inventor
Matthias Jokisch
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.)
Avdel UK Ltd
Original Assignee
Avdel UK Ltd
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 Avdel UK Ltd filed Critical Avdel UK Ltd
Assigned to AVDEL UK LTD reassignment AVDEL UK LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JOKISCH, MATTHIAS
Publication of US20100232907A1 publication Critical patent/US20100232907A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/086—Self-piercing rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/083—Self-drilling rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027—Multi-part rivets
    • F16B19/1036—Blind rivets
    • F16B19/1045—Blind rivets fastened by a pull - mandrel or the like
    • F16B19/1054—Blind rivets fastened by a pull - mandrel or the like the pull-mandrel or the like being frangible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting

Definitions

  • the present invention relates to a self-drilling blind rivet having a mandrel which at the end thereof facing the workpiece is having a hole-forming tip as well as a method for placing such a blind rivet.
  • Such self-drilling blind rivets already are known from the prior art.
  • the tip of the pulling head of the mandrel of the blind rivet on the side of the workpiece is performed as a drilling tool for drilling a hole in the workpiece.
  • the corresponding rotary drive is performed via the mandrel which is provided on the tool side end thereof with corresponding force application points.
  • Corresponding self-tapping blind rivets in which the tip is performed as a means for non-cutting boring by thermic softening of the workpiece by the rotation of the tip are known for example already from the WO 2004/102015 A1 or the EP 1 503 089 A1.
  • mandrel of the rivet is driven rotationally.
  • the connection between the mandrel of the rivet and the rivet shank is serving to ensure that the rivet shank is rotating, too, to ensure that the workpieces during the insertion of the stir friction rivet laterally of the rivet, too, are maintained shapable or soft or liquid, respectively, by means of the frictional heat.
  • the torque for the drilling has to be introduced via the predetermined breaking point at which the mandrel of the rivet should break off after the blind rivet has been placed.
  • the present invention is proposing that a positive fit or non-positive fit is provided between the mandrel of the rivet and the rivet shank and, that a force application point for the tool is provided in or at the rivet head.
  • a positive fit or non-positive fit is provided between the mandrel of the rivet and the rivet shank and, that a force application point for the tool is provided in or at the rivet head.
  • the tip is performed as a spherical friction surface. It then is serving for the non-cutting drilling by thermic softening of the workpieces by means of the rotation of the friction surface.
  • a glued joint preferably can be provided to achieve the positive fit connection of the end of the rivet shank on the side of the workpiece with the mandrel of the rivet.
  • the task being basis for the present invention additionally is solved by a method for placing a blind rivet for connecting two or more workpieces, wherein the workpieces are not provided with a bore previously but instead the blind rivet itself is producing its bore by the fact that the tip of the mandrel of the blind rivet is turned and the bore in this way is produced while the blind rivet is placed, wherein the blind rivet by means of a force application point provided at the head of its shank is rotationally driven and, that the rotation forces are transferred from the shank via a positive fit or non-positive fit connection between the shank and the mandrel of the rivet to the same and from the mandrel are transferred to the tip.
  • the positive fit connection between the shank and the mandrel of the rivet is formed by the feature that at the end of the rivet shank on the side of the workpiece there are formed saw-tooth-shaped tips which are engaging corresponding saw-tooth-shaped grooves which are provided on the back-side of the head of the mandrel of the rivet facing the rivet shank.
  • an especially preferred positive fit connection between the shank and the mandrel of the rivet can be provided by the feature that the mandrel of the rivet at least on the side of the workpiece with respect to the predetermined breaking point is provided with an exterior gearing and that the interior side of the rivet shank is provided with a corresponding opposed gearing.
  • connection between the rivet shank and the mandrel of the rivet further can be provided by the feature that the rivet shank and the mandrel of the rivet in the vicinity of the end of the rivet shank facing the workpiece are glued together and in this way the driving force for the rotational movement of the tip of the mandrel of the rivet is transferred.
  • the mandrel of the rivet at least on the side of the workpiece with respect to the predetermined breaking point can be provided with a knurling and, wherein the rivet shank is crimped in the area of the knurling such that in this way a possibility is provided to transfer the driving force for the rotational movement of the tip of the mandrel of the rivet.
  • the back-side of the hole-forming tip of the mandrel of the rivet can be connected with the rivet shank by means of frictional welding or electric resistance welding such that the driving force for the rotational movement of the tip of the mandrel of the rivet is transferred via the welded connection.
  • the back-side of the tip of the mandrel of the rivet forming the hole can be provided with sharp cutting edges which by the contact forces during the self-drilling of the blind rivet are pressed into the rivet shank and in this way are transferring the drive force for the rotational movement of the tip of the mandrel of the rivet.
  • FIG. 1 a self-drilling blind rivet according to the invention in a lateral view and partly in section;
  • FIG. 2 a self-drilling blind rivet according to the invention with a hexalobular force application point from above;
  • FIG. 3 a further self-drilling blind rivet according to the invention with a usual hexagon as a force application point from above;
  • FIG. 4 a the design of the mandrel of the rivet for a further self-drilling blind rivet according to the invention
  • FIG. 4 b the tip of the mandrel of the rivet and the rivet shell of the blind rivet according to FIG. 4 a after the assembly and mounting (crimping) and,
  • FIG. 5 a further embodiment of a self-drilling blind rivet according to the invention in which the back-side of the tip of the mandrel of the rivet is provided with sharp cutting edges.
  • an embodiment according to the invention is having a usual break stem blind rivet having a mandrel 12 which via a predetermined breaking point or usual break-neck 14 is merging to the enlarged head 16 of the mandrel 12 .
  • This mandrel is as usual with blind rivets enclosed by the rivet shank 18 with the rivet head 12 on the side away from the workpiece.
  • the head 16 of the mandrel 12 is provided with a spherically shaped tip 22 which when it is set in a sufficiently high rotations per minute is serving to the drilling of the placing hole for the blind rivet by flow shaping by means of heating the workpiece.
  • the end of the rivet shank 18 on the side of the workpiece is provided with a saw-tooth-shaped gearing 24 .
  • the back-side of the mandrel head 16 on the side of the tool in this connection is provided with correspondingly adapted recesses for receiving the saw teeth 24 as shown.
  • an interior force application point 26 is provided within the head 20 of the blind rivet 10 .
  • FIG. 2 in this respect is showing a hexalobular interior force application point 26 as such force application point for example is known under the trade mark Torx®.
  • FIG. 3 in difference from the above is showing a modified embodiment in which a usual hexagonal interior force application point 26 ′ is provided. Obviously many other force application points, too, can be used in this connection.
  • the rivet head and therefore the rivet shank can be set in such a strong rotation by means of a usual tool and can be pressed against the workpiece simultaneously that the spherically formed tip of the blind rivet according to the invention a surface of a workpiece by means of the heat induced by the rotation can soften the same and can penetrate into the same, wherein the corresponding placing hole is formed.
  • the corresponding forces or torques, respectively, according to the invention are not transferred via the break neck 14 but instead via the substantially more resistant shank 18 of the rivet which again via the gearing 24 is transferring the forces into the mandrel head 16 having the tip 22 .
  • According to the invention therefore fore substantially larger forces and torques can be transferred to the tip of the self-drilling blind rivet according to the invention without that the danger is being present that the mandrel prematurely is breaking at the break neck 14 .
  • FIG. 4 a is showing a mandrel 12 which above the hole-forming tip 16 is provided with a knurling 30 .
  • This knurling 30 here is serving for the transfer of the drive forces during the drilling of the placing hole by means of the blind rivet itself.
  • the shell 18 in the region of the knurling 30 is crimped correspondingly after the insertion of the mandrel 12 of the rivet.
  • the procedure of crimping in this connection is indicated by the arrows 32 and the created crimping pressure is shown by the reference numeral 34 .
  • FIG. 5 is showing a further possibility according to the invention for transferring the drive forces from the shell 18 to the tip 16 .
  • the side 40 (back-side) of the tip 16 facing the shell 18 is provided with sharp cutting edges or ridges 42 which away from the mandrel 12 are extending radially to the exterior.
  • the ridges 42 are cutting into the front face of the shell 18 , whereby the transfer of forces for the rotational forces for the drilling of the own placing hole of the blind rivet 10 can be transferred without problem.
  • the force application points 26 within or at the rivet head 20 apart from a interior force application point as shown in FIG. 1 can be performed as a separate exterior force application point, too, or can be provided by the feature that the exterior circumference of the head 20 of the shell for example is designed as a hexagon to create the force application point.
  • Corresponding interior force application points can be performed as an interior hexagon with the shape of crossing grooves or as a hexalobular interior force application point.
  • Corresponding exterior force application points can be performed as square head, hexagon head or exterior hexagon round head (hexalobular).
  • the present invention in this connection is suitable for all known shapes of blind rivets.
  • a corresponding “classic drill tip”, too, can be provided for a cutting drilling in case the occurrence of chips is not disturbing in any way.
  • the present invention is especially suitable for such cases in which a self-drilling screw cannot be used due to the fact that the workpieces to be joined are too thin to provide for the formation of a sufficient thread. Then the blind rivet according to the invention is the only suitable and usable solution.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
US12/377,346 2006-08-26 2007-08-22 Self-tapping blind rivet Abandoned US20100232907A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202006013142.6 2006-08-26
DE202006013142U DE202006013142U1 (de) 2006-08-26 2006-08-26 Selbstbohrendes Blindniet
PCT/DE2007/001486 WO2008025327A2 (de) 2006-08-26 2007-08-22 Selbstbohrendes blindniet

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/001486 A-371-Of-International WO2008025327A2 (de) 2006-08-26 2007-08-22 Selbstbohrendes blindniet

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/449,699 Division US8721241B2 (en) 2006-08-26 2012-04-18 Self-tapping blind rivet

Publications (1)

Publication Number Publication Date
US20100232907A1 true US20100232907A1 (en) 2010-09-16

Family

ID=37490089

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/377,346 Abandoned US20100232907A1 (en) 2006-08-26 2007-08-22 Self-tapping blind rivet
US13/449,699 Active US8721241B2 (en) 2006-08-26 2012-04-18 Self-tapping blind rivet

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/449,699 Active US8721241B2 (en) 2006-08-26 2012-04-18 Self-tapping blind rivet

Country Status (11)

Country Link
US (2) US20100232907A1 (es)
EP (1) EP2054637B1 (es)
JP (1) JP5271269B2 (es)
KR (1) KR20090045946A (es)
CN (1) CN101512167A (es)
AU (1) AU2007291708A1 (es)
BR (1) BRPI0715733A8 (es)
CA (1) CA2662669A1 (es)
DE (2) DE202006013142U1 (es)
MX (1) MX2009002094A (es)
WO (1) WO2008025327A2 (es)

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US20110033264A1 (en) * 2008-03-07 2011-02-10 Uwe Frank Fastening Element
US20130142591A1 (en) * 2010-08-24 2013-06-06 Uwe Frank Fastening Element
US8721241B2 (en) 2006-08-26 2014-05-13 Avdel Uk Limited Self-tapping blind rivet
US10464122B2 (en) 2012-07-13 2019-11-05 Atlas Copco Ias Uk Limited Spot-joining apparatus and methods
US11476525B2 (en) 2016-06-24 2022-10-18 Samsung Sdi Co., Ltd. Rechargeable battery

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CN102837298B (zh) * 2012-09-10 2015-10-28 湖南省金为型材有限公司 用于钻铆紧固件的工具
DE102013103615A1 (de) * 2013-04-10 2014-10-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Blindniet und Blindnietverbindung
KR101532246B1 (ko) 2013-08-09 2015-06-29 주식회사 성우하이텍 리벳 너트 유닛
CN103398065A (zh) * 2013-08-15 2013-11-20 福立旺精密机电(中国)有限公司 盲孔用铆钉
US9381563B2 (en) * 2014-08-07 2016-07-05 GM Global Technology Operations LLC Method for joining workpieces
KR101672198B1 (ko) * 2014-09-18 2016-11-17 주식회사 성우하이텍 리벳 모듈
US9808856B2 (en) * 2014-09-25 2017-11-07 GM Global Technology Operations LLC Apparatus and methods for reducing corrosion of joining composite workpieces
US20160201709A1 (en) * 2015-01-13 2016-07-14 GM Global Technology Operations LLC Rivet with cutting mandrel tip and one-sided joining method
US10675671B2 (en) 2017-01-30 2020-06-09 GM Global Technology Operations LLC Blind flow screw joining of materials
CN107191456A (zh) * 2017-05-25 2017-09-22 柳州博纳汽车科技有限公司 一种旋转焊接铆钉及其铆接方法
US11193520B2 (en) * 2018-04-17 2021-12-07 GM Global Technology Operations LLC Fastener assembly for use with one or more workpieces
GB201812641D0 (en) * 2018-08-03 2018-09-19 Henrob Ltd Riveting method
CN109746377A (zh) * 2019-01-15 2019-05-14 同济大学 热辅助热熔自攻单面铆接装置及方法
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CN113137418B (zh) * 2021-04-09 2022-03-11 徐州恒启智能制造有限公司 一种高精度双鼓铝合金铆钉及其制备工艺

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8721241B2 (en) 2006-08-26 2014-05-13 Avdel Uk Limited Self-tapping blind rivet
US20110033264A1 (en) * 2008-03-07 2011-02-10 Uwe Frank Fastening Element
US9151313B2 (en) * 2008-03-07 2015-10-06 Würth International Ag Fastening element
US20130142591A1 (en) * 2010-08-24 2013-06-06 Uwe Frank Fastening Element
US10464122B2 (en) 2012-07-13 2019-11-05 Atlas Copco Ias Uk Limited Spot-joining apparatus and methods
US10695822B2 (en) 2012-07-13 2020-06-30 Atlas Copco Ias Uk Limited Blind riveting apparatus and methods
US11476525B2 (en) 2016-06-24 2022-10-18 Samsung Sdi Co., Ltd. Rechargeable battery

Also Published As

Publication number Publication date
WO2008025327A2 (de) 2008-03-06
AU2007291708A1 (en) 2008-03-06
JP5271269B2 (ja) 2013-08-21
US8721241B2 (en) 2014-05-13
CA2662669A1 (en) 2008-03-06
DE112007002547A5 (de) 2009-07-30
CN101512167A (zh) 2009-08-19
KR20090045946A (ko) 2009-05-08
EP2054637A2 (de) 2009-05-06
WO2008025327A3 (de) 2008-04-17
EP2054637B1 (de) 2012-11-28
BRPI0715733A2 (pt) 2014-10-29
JP2010501807A (ja) 2010-01-21
US20120219383A1 (en) 2012-08-30
BRPI0715733A8 (pt) 2015-09-08
DE202006013142U1 (de) 2006-11-16
MX2009002094A (es) 2009-05-28

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