EP0198105A1 - Ein sicher lösbares, stiftdrahtförmiges Spannmittel für automatisches Einsteck- und Ausziehwerk - Google Patents

Ein sicher lösbares, stiftdrahtförmiges Spannmittel für automatisches Einsteck- und Ausziehwerk Download PDF

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Publication number
EP0198105A1
EP0198105A1 EP85108572A EP85108572A EP0198105A1 EP 0198105 A1 EP0198105 A1 EP 0198105A1 EP 85108572 A EP85108572 A EP 85108572A EP 85108572 A EP85108572 A EP 85108572A EP 0198105 A1 EP0198105 A1 EP 0198105A1
Authority
EP
European Patent Office
Prior art keywords
nut
housing
tool
clamp
retaining
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.)
Withdrawn
Application number
EP85108572A
Other languages
English (en)
French (fr)
Inventor
Victor Belanger
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.)
Monogram Industries Inc
Original Assignee
Monogram Industries 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 Monogram Industries Inc filed Critical Monogram Industries Inc
Publication of EP0198105A1 publication Critical patent/EP0198105A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/42—Special clamping devices for workpieces to be riveted together, e.g. operating through the rivet holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B31/00—Hand tools for applying fasteners
    • B25B31/005—Hand tools for applying fasteners for temporarily connecting sheets before or during assembly operations

Definitions

  • this invention relates to a wire-pin type clamping device used for temporary clamping of two or more workpieces having aligned holes within them in a desired relationship while some other operation is performed upon the workpieces.
  • this invention relates to a positive-release type device and, most specifically, to a device adapted for use with automated, motor-driven insertion and withdrawal tools.
  • the clamping can be accomplished by means of a body having a sliding, split pin which is extended through the aligned holes, then expanded and retracted forceably back into the body, whereby the parts are clamped together between the expanded ends of the pins and the retracting body.
  • the device can then be withdrawn by a reversal of the above steps and re-used endlessly on other jobs.
  • Typical of the situations in which such clamps find application is the process of temporarily attaching aircraft skins to each other or to structural members while they are being permanently riveted together in an assembly.
  • the spring employed in these type of fasteners is fabricated in two identical halves, each having a wedge or ramp incline on its inner surface such that when retracted axially against an inner-disposed spreader part, will cause them to separate and spread outward from each other.
  • the device is further comprised of some form of housing, usually cylindrical and having hexagonal surfaces, into which the spring is retracted by means of some force applied to the ends of the spring halves.
  • the clamping force is supplied by means of a coil spring which is compressed when the pin is extended from the housing.
  • the pins are withdrawn into the housing to clamp the pieces by screw means which are actuated with hand tools, such as wrenches.
  • Such clamps are provided with a first hexagonal tool-gripping surface on the outside of the housing to retain the device against rotation during the clamping process and a second hexagonal tool-gripping surface on a nut that is threaded onto an extension of the split spring such that, when the nut is rotated on the shaft to a point where it contacts the back of the housing, further rotation causes the pin to be withdrawn into the housing and the clamping force to be exerted by the pin.
  • the tool-gripping surfaces of the housing and the driver nut are usually configured into a polygonal shape to accommodate retention and/or driver tools, such as a hexagonal drive socket. In either the clamped or unclamped position, these tool-gripping surfaces will be aligned at random with one another such that it is improbable that a tool provided with concentric, successive, retaining and driving features can be simply inserted onto the back of the device.
  • a clamp having a main housing portion having an exterior tool-gripping surface which is universally adapted to be grasped by a tool to hold the same regardless of the initial angular orientation of the tool with respect to the housing and further, containing a spring-driver nut rotatably retained within the housing and extending from the rear of the housing which is also provided with an exterior tool-gripping surface that is universally adapted to be grasped by a driver tool regardless of the initial angular orientation between the nut surface and the driver tool.
  • the driver nut also contains a threaded bore through its length which engages a threaded shaft extending from a stud which retains the spring fingers within the interior of the housing.
  • the stud is keyed by a non-rotation feature within the housing so as to prevent rotation of the stud and springs when the nut is rotated about its axis, which causes the spring to translate in and out of the housing without rotation.
  • a spreader plate Disposed between the fingers of the wires is a spreader plate which is retained at one end within the housing. The spreader plate is so retained in the housing that it neither translates nor rotates with motion of the spring fingers relative to it.
  • the elements of the wire pin are axially displaced with respect to the spreader, causing the ramp feature which is integral to the elements of the wires to engage or disengage with the spreader which, in turn, causes the wire elements to spread or compress against each other for clamping and unclamping of the workpieces.
  • the clamp may be inserted and withdrawn into an appropriately-configured, power-driven insertion tool without the attendant problem caused by a misalignment of the nut with respect to the housing.
  • an improved, positive-release, wire-spring type clamp 10 for automated insertion and withdrawal is shown in cross section, installed'in a pair of workpieces 1 and 2 having aligned apertures.
  • the springs 12 are identical to each other and each has a workpiece gripping surface 16 disposed to grip the workpiece 1 on its inner surface when the springs 12 are spread apart. This is accomplished by withdrawing the springs 12 in an axial direction into the clamp 10 such that a ramp feature 14 disposed upon each of the springs 12 contacts the nose 20 of the spreader 18 disposed between the springs sucn that they are spread apart at their interior surfaces by the thickness of the spreader 18.
  • Spreader 18 is restrained from moving in the axial direction by "tee" fingers 22 which are retained within the body of the clamp 10.
  • the spring fingers 12 are retained rigidly in one end of a stud 24 which has a threaded shaft 26 extending axially from the end opposite the springs 12.
  • the stud 24 is provided with an anti-rotation feature 28 which is, in the perferred embodiment illustrated, a hexagonl-nut surface.
  • the stud 24 is translated axially within the housing without rotation by means of rotation of a driver nut 30 which contains a threaded internal bore 31 to engage the threaded shaft 26.of the stud 24.
  • the driver nut 30 is rotatably-retained within the clamp pin by means of a flange feature 32 having a cylindrical shoulder 34 of a diameter larger than that of the tool-gripping surface 36 of the driver nut 30.
  • This tool-gripping surface 36 is made cylindrical, thereby eliminating the need for a socket-engagement feature having an angularity, such as a hex head, which is dependent upon the angular orientation between the nut 30 and the driving tool socket for mating.
  • Clamp housing 38 is generally cylindrical in configuration, and in the perferred exemplarly embodiment, includes a nose part 40 formed into the housing 38 to contact the workpieces land 2 and exert an axial force upon them.
  • the springs 12 extend axially from the body of the clamp 10 through an opening 42 in the nose part 40 of the outer housing assembly 38, and the driver nut 30 extends from the opposite end of the clamp 10 through an opening 58 in the outer housing 38.
  • the housing 38 is provided with three, axially-disposed retention features along its length.
  • the first of these features is a annular groove 44 to retain the "tee" fingers 22 of the spacer 18 in the axial direction.
  • the groove 44 is provided with a washer 48 axially-disposed between first and second shoulders 45 and 46 formed into the housing 38.
  • the shoulder 46 is created by roll-forming a flange into the housing 38 after the washer 48 and spreader 18 are inserted into the first retaining groove 44 in the exemplary perferred embodiment.
  • the housing 38 has a second annular groove 50 through which the stud 24 translates axially.
  • This second annular groove 50 contains a anti-rotation feature 52 to mate and engage with a complementary anti-rotation feature 28 on the stud 24.
  • the anti-rotation features 28 and 52 illustrated are a simple hexagonal cross section. However, as is evident to those skilled in the art, this feature may take other appropriate forms, e.g., a key sliding in a slot.
  • the housing 38 contains a third annular groove 54 disposed toward the outer end of the clamp 10 for rotatably-retaining the driver nut 30.
  • This nut-retaining annular groove 54 is formed in a manner similar to that of the spacer-retaining groove 44, and has a retaining shoulder 56 disposed at one end of the groove 54 which is oppositely-disposed in the groove 54 to a nut-retaining washer 62.
  • the nut-retaining washer 62 is inserted into a washer-retaining annular groove 63 in the housing 38 and retained in place by roll-forming a flange 60 to crimp the washer 62 in place.
  • a thrust washer 64 Oppositely-disposed in the nut-retaining groove 54 and bearing on the shoulder 56 is a thrust washer 64.
  • the thrust washer 64 serves to retain driver nut 30 in the axial direction and additionally, serves as a bearing surface for the driver nut 30 through which the relative axial force is transferred between the housing 38 and the stud 24 during clamp 10 installation, thus preventing galling and wear between the mating surfaces of the non-rotating housing 38 and the rotating driver nut 30.
  • the outer, tool-gripping surface 66 of the housing 38 is, like the tool-gripping surface 36 of the nut 30, provided with a universal, smooth surface that is cylindrical in shape.
  • the outer diameter of the housing's tool-gripping surface 66 is, in the preferred embodiment illustrated, larger in diameter than the tool-gripping surface 36 of driver nut 30, thereby permitting a concentric, successive pair of gripping tools to be installed onto the back of the clamp by a stright, axial thrust of the driver tool onto the clamp without regard to the relative angular position between the housing 38 and the driver nut 30 or the relative angular position between the tool and the clamp 10.
  • Figure 1 illustrates the perferred embodiment of the present invention in the clamped position, with the workpieces 1 and 2 clamped between the gripping portion 16 of the springs 12 and the nose part 40 of the clamp 10.
  • the driver nut 30 is fully forward in the nut-retaining groove 54 and bears against the thrust washer 64 and that the actual length of the nut-retainer groove 54 is so adjusted as to permit the driver nut 30 to move axially for a length of several turns of the threaded shaft 26 before engaging either the thrust washer 64 or the nut-retaining washer 62 upon. clamp 10 insertion or withdrawal, respectively.
  • the driver nut 30 may gain rotational inertia in either the withdrawal or insertion mode such that the driver tool is aided in "making” or “breaking” the clamping force.
  • the length of the tool-gripping surface 36 of the driver nut 30 which extends beyond the end of the housing 38 must be sufficiently long such that, even when the driven nut 30 is fully forward in the nut-retaining groove 54 (as in the fully-clamped mode illustrated in Figure 1), sufficient gripping surface 36 remains for the driver tool to grasp and drive the nut 30.
  • Figure 5 illustrates the clamp 10 with the springs 12 in the fully-extended position, i.e., the ramp feature 14 of the springs 12 are fully past the nose 20 of the spreader 18 such that the springs 14 are compressed together and the grasping shoulders 16 of the springs 14 may pass through the workpiece.
  • the driver nut 30 is fully extended from the housing 38 and the internal threads 31 of the driver nut 30 are fully disengaged from the threads of the shaft 26, such that driver nut 36 is free to rotate without exerting further axial force upon the stud 24.
  • all parts of the clamp pin including the springs 12, spacer 18, stud 24, shaft 26, nut 30, housing 38, and washers 48, 62 and 64 are made of various alloys of steel. These alloys were chosen for their various fabrication properties and because it is an object of the present invention to provide a clamp which is rugged and will withstand repeated clamping and unclamping actions, involving high torquing and clamping forces, in a high volume production environment with minimal wear and breakage of the clamps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Clamps And Clips (AREA)
EP85108572A 1985-04-17 1985-07-10 Ein sicher lösbares, stiftdrahtförmiges Spannmittel für automatisches Einsteck- und Ausziehwerk Withdrawn EP0198105A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72411085A 1985-04-17 1985-04-17
US724110 1985-04-17

Publications (1)

Publication Number Publication Date
EP0198105A1 true EP0198105A1 (de) 1986-10-22

Family

ID=24909051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108572A Withdrawn EP0198105A1 (de) 1985-04-17 1985-07-10 Ein sicher lösbares, stiftdrahtförmiges Spannmittel für automatisches Einsteck- und Ausziehwerk

Country Status (6)

Country Link
EP (1) EP0198105A1 (de)
JP (1) JPS61241507A (de)
CN (1) CN85105233A (de)
BR (1) BR8504478A (de)
ES (1) ES8608375A1 (de)
IL (1) IL75785A0 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629529A1 (de) * 1988-04-01 1989-10-06 Aerospatiale
DE10004506C1 (de) * 2000-02-02 2001-11-15 Manfred Winke Vorrichtung zum Lochspannen
CN103157751A (zh) * 2011-12-09 2013-06-19 苏州工业园区高登威科技有限公司 机台
CN103288045A (zh) * 2013-06-13 2013-09-11 中国科学院自动化研究所 一种薄壁圆柱筒形微零件的内壁夹持装置和方法
CN111469097A (zh) * 2020-04-16 2020-07-31 周小威 排钉锤
EP3848595A1 (de) * 2020-01-07 2021-07-14 Centrix Inc. Befestigungsanordnung und verfahren zum betrieb der besagten anordnung
US20210215183A1 (en) * 2020-01-13 2021-07-15 Lisi Aerospace Insertable Clamp With Aligned Clip
US12158172B2 (en) 2020-01-07 2024-12-03 Centrix Aerospace Llc Fastener assembly and method for operation of said assembly

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50210439D1 (de) * 2001-04-27 2007-08-23 Erowa Ag Spannvorrichtung
DE102009036334B4 (de) * 2009-08-06 2013-11-21 A. Raymond Et Cie Vorrichtung zum Setzen eines Befestigungselementes
CN101881293B (zh) * 2010-07-07 2011-10-19 常州星宇车灯股份有限公司 定位锁紧机构
FR2991219B1 (fr) * 2012-05-30 2015-02-27 Lisi Aerospace Famille de fixations temporaires et dispositif de pose de telles fixations
FR3014969B1 (fr) * 2013-12-16 2016-01-29 Lisi Aerospace Fixation temporaire
EP3085973A4 (de) * 2014-05-15 2017-07-26 FS Technical Corporation Nachträglich installierter anker, implementierungsverfahren für nachträglich installierten anker, nachträglich installiertes ankersystem und rotationsstoppwerkzeug
CN104314940B (zh) * 2014-09-01 2017-01-25 株洲南车时代电气股份有限公司 一种防脱连接结构
BR112017017181A2 (pt) * 2015-02-13 2018-04-03 D Mcclure Travis corpo de dobramento, ferramenta de alinhamento, e, método para alinhamento de buracos.
US10001359B2 (en) * 2016-07-25 2018-06-19 The Boeing Company Retractable index pins and methods of operating thereof
DE102019100465A1 (de) * 2018-02-09 2019-08-14 Fischerwerke Gmbh & Co. Kg Setzgerät für einen Spreizanker
WO2021095228A1 (ja) * 2019-11-15 2021-05-20 サーミット工業株式会社 仮締結具
FR3106996B1 (fr) * 2020-02-06 2022-04-22 Lisi Aerospace Agrafe d’épinglage à pince circulaire avec écarteur fixe
CN115355229B (zh) * 2022-10-11 2025-05-27 林培海 一种快速连接防震动螺母

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263320A (en) * 1964-04-20 1966-08-02 Monogram Ind Inc Apparatus and method for assembling and disassembling clamps
US3289525A (en) * 1964-03-16 1966-12-06 Monogram Ind Inc Positive release pin-type clamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289525A (en) * 1964-03-16 1966-12-06 Monogram Ind Inc Positive release pin-type clamp
US3263320A (en) * 1964-04-20 1966-08-02 Monogram Ind Inc Apparatus and method for assembling and disassembling clamps

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629529A1 (de) * 1988-04-01 1989-10-06 Aerospatiale
EP0336808A1 (de) * 1988-04-01 1989-10-11 AEROSPATIALE Société Nationale Industrielle Einsteckbare Klammer mit innenliegendem Mechanismus
US5042787A (en) * 1988-04-01 1991-08-27 Aerospatiale Societe National Industrielle Pinning fastener with internal mechanism
DE10004506C1 (de) * 2000-02-02 2001-11-15 Manfred Winke Vorrichtung zum Lochspannen
CN103157751A (zh) * 2011-12-09 2013-06-19 苏州工业园区高登威科技有限公司 机台
CN103288045A (zh) * 2013-06-13 2013-09-11 中国科学院自动化研究所 一种薄壁圆柱筒形微零件的内壁夹持装置和方法
CN103288045B (zh) * 2013-06-13 2015-07-15 中国科学院自动化研究所 一种薄壁圆柱筒形微零件的内壁夹持装置和方法
EP3848595A1 (de) * 2020-01-07 2021-07-14 Centrix Inc. Befestigungsanordnung und verfahren zum betrieb der besagten anordnung
US12158172B2 (en) 2020-01-07 2024-12-03 Centrix Aerospace Llc Fastener assembly and method for operation of said assembly
US20210215183A1 (en) * 2020-01-13 2021-07-15 Lisi Aerospace Insertable Clamp With Aligned Clip
US12258986B2 (en) * 2020-01-13 2025-03-25 Lisi Aerospace Insertable clamp with aligned clip
CN111469097A (zh) * 2020-04-16 2020-07-31 周小威 排钉锤

Also Published As

Publication number Publication date
IL75785A0 (en) 1985-11-29
BR8504478A (pt) 1986-12-16
JPS61241507A (ja) 1986-10-27
ES545583A0 (es) 1986-06-16
CN85105233A (zh) 1986-10-22
ES8608375A1 (es) 1986-06-16

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