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EP0062869A2 - Nietmaschine für Hohlniete zum Aufbringen einer Zugkraft auf einen Nietdorn - Google Patents

Nietmaschine für Hohlniete zum Aufbringen einer Zugkraft auf einen Nietdorn Download PDF

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Publication number
EP0062869A2
EP0062869A2 EP82102870A EP82102870A EP0062869A2 EP 0062869 A2 EP0062869 A2 EP 0062869A2 EP 82102870 A EP82102870 A EP 82102870A EP 82102870 A EP82102870 A EP 82102870A EP 0062869 A2 EP0062869 A2 EP 0062869A2
Authority
EP
European Patent Office
Prior art keywords
elements
riveting machine
disc
machine according
sleeve
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Withdrawn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
EP82102870A
Other languages
English (en)
French (fr)
Other versions
EP0062869A3 (de
Inventor
Giovanni Battista Pizzinato
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.)
OCAP di ALda Galeazzi
Original Assignee
OCAP di ALda Galeazzi
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 OCAP di ALda Galeazzi filed Critical OCAP di ALda Galeazzi
Publication of EP0062869A2 publication Critical patent/EP0062869A2/de
Publication of EP0062869A3 publication Critical patent/EP0062869A3/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Withdrawn legal-status Critical Current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
    • B21J15/386—Pliers for riveting
    • 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

Definitions

  • This application relates to the art of riveting. It is a known technique, particularly but not exclusively in aeronautical field, to fasten sheets or plates together, particularly when one face of the sheets or plates is not accessible, by means of rivets.
  • the rivets are applied with the pin thereof inserted and projecting from an accessible face of the sheets or plates, and then a sufficient tractive force is applied to the pin for causing the rivet to be buckled on the opposite face or side of the sheets or plates, and preferably such a tractive force should be sufficient to cause the pin to break at a properly weakened section thereof.
  • This tractive force is applied to the pin by riveting machines or devices, which may be
  • These machines generally include a gripping unit or assembly comprising an outer sleeve and an inner body axially movable relatively to each other. Said sleeve is provided at one end with a piece forming an aperture for accommodating the pin, and internally of the sleeve said piece forms a spreading element generally comprising a bevelled circular surface.
  • the body comprises a vice with spreadable jaws, said jaws having an inclined outer surface for fitting an inclined inner surface of a closing element or cap forming part of the body.
  • the jaws are spring pressed to an extended condition relative to the body and, when encountering the spreading element and not bearing against the closing cap, such jaws can open for pin gripping, while when engaged by the closing cap and moved away from the spreading element they will grip and tighten the pin.
  • a tractive force can be applied to the body and accordingly to the pin until breaking the latter.
  • the object is to provide a riveting machine not requiring high operating efforts.
  • a further object is to provide such a riveting machine, which is sturdy, economical and reliable.
  • riveting machine of the present invention which riveting machine comprises a conventional bripping unit or assembly and is characterized in that a sleeve of the gripping unit or assembly is integral with a first element; a body of the gripping unit when subjected to tractive force is integral with a second element coaxial with the first element, the two elements being rotatable relatively to each other through inclined or sloping surfaces, and an axial relative movement between said sleeve and said body, from an open condition to a tightened condition, being caused by relative rotation between said elements.
  • the sloping surfaces on the two elements may directly cooperate with one another.
  • rolling means generally balls, are interposed therebetween.
  • said elements comprise opposite disc elements, and said sloping surfaces are provided in at least one of said disc elements, on the face or side thereof facing the other disc element, and are formed of rolling seats of decreasing depth, said seats having a center line which is a circular portion around the axis of the element.
  • said elements are made with threads in opposite sides or faces therof and, although such threads may be standard threads, the device is preferably designed with ball circulation threads.
  • the novel riveting machine in one embodiment may be manualy operated; in other embodiments it may be provided with pneumatic, or electric or fluid control; the machine is effective for applying a tractive force to a pin with considerably lower efforts than a standard or normal riveting machine. In addition, it is sturdy, reliable and economical.
  • reference numeral 1 designates an exemplary rivet of ordinary use, which comprises a pin 2 and a cap 3 having an enlarged head aod a deformable shank.
  • a tractive force is applied to the pin, thereby to deform or buckle the rivet shank, generally until the pin breaks at a weakened preset zone therein.
  • the novel riveting machine has been designated as a whole by numeral 10 and comprises a sleeve 12 and a body 14.
  • the sleeve 12 is substantially tubular, open at the bottom, while the end 15, the lower end in the figure, has a screwed piece 16, the latter being provided with a through longitudinal aperture 17 of sufficient diameter to accommodate the pin 2, and projecting internally of the sleeve to make up a spreading or widening element provided with a bevelled circular surface 18.
  • the body 14 comprises an internally hollow substantially cylindrical portion 20, the hollow or slot of which is shown at 22; a closing portion or cap 24 is screwed to portion 20, the cap internally having sloping or conical walls 25.
  • Said body 14 is also comprises a vice 26 generally including three jaws of conical outer surface, having a taper substantially corresponding to that of wall 25.
  • This vice 26 and closing cap 24 may be provided with a relative sliding motion and, depending on the relative arrangement, the vice jaws may widen out or spread apart to one another (to accommodate the pin 2), or may draw close to one another (to tighten the pin 2).
  • the vice jaws are pressed to extended position from the body by a presser element 28 and a spring 30 received in the body slot 22.
  • a tang 32 is integral with the body cylinder or barrel 20.
  • the body 14 is axially slidable relatively to the sleeve, so that both can appear at the conditions shown in Figs. 1 and 3.
  • said body is downward displaced within the sleeve (obviously, such terms as "upward” or “downward” and the like shall be intended only with reference to the figure and not in a restrictive sense), until releasing the vice jaws 26 from the surface 25.
  • the vice jaws 26, urged by spring 30, have encountered the bevel 18 of the spreading element and have been widened out; the pin 2 may loosely penetrate among the jaws.
  • the body 14 has moved downward within the sleeve 12.
  • the closing cap 24 has lifted the jaws 26 and firmly closed the same on pin 2.
  • a tractive force applied to said tang 32 is also applied to said pin 2.
  • the gripping unit or assembly hitherto described is also provided on the prior art riveting machines.
  • the sleeve 12 is made integral with a first disc element 34, generally by screwing, and is secured by a nut 35.
  • the body 14 is made integral, when subjected to a tractive force, with a second disc element 36.
  • the coupling between said body 14 and disc element 36 is carried out by a rolling bearing 38 between said disc element 36 and a plate 40, the latter being made integral with the tang 32 by a fastening or set nut 42.
  • a tooth 43 provides a coupling between said disc element 34 and tang 32, which coupling is effective when disc 34 is rotated.
  • the disc element 34 has at the top a tubular extension 44, which is rotatably received within an aperture 46 of the second disc element 36. Within the passage in the tubular extension 44, said tang 32 can be only vertically moved, so that traction only is transmitted to the pin 2.
  • a spring 48 is interposed between the cylinder or barrel 20 of body 14 and the disc element 34, this spring 48 substantially pressing the two disc elements 34 and 36 against each other and by reaction urging said body 14 away from the disc elements, with the function of both overcoming the force of spring 30 at rest step (Fig. 1) and opening the vice, and bringing the disc 36 from traction condition (Fig. 3) back to rest condition (Fig. 1).
  • the opposite surfaces 50 and 52 respectively of the disc element 34 and disc element 36 have grooves of decreasing depth and circle arranged around the disc axis.
  • Such grooves have been shown in Figs. 2 and 4 by full line for the element 34 and are designated by numeral 54, while have been drawn in Fig. 2 by dash- line, only indicative for the position thereof, for the element 36 and are designated by numeral 56.
  • the contour of the bottom wall of grooves 54 is shown in Fig.
  • the grooves 54 and 56 may be rounded out with substantially the same radius as that of balls 60, or may have contours designed for friction minimization.
  • Reference numeral 62 indicates a cage for said balls 60.
  • the riveting machine 10 operates as described in the following.
  • the sleeve 12 is rotatable secured with a first element 74 and the tang 32 is axially movable with a second element 76 through the bearing 38.
  • the first and second elements are so formed as to have opposite cylindrical faces 78 for element 74 and 80 for element 76, respectively.
  • Threads 78' and 80' are provided in the opposite faces 78 and 80 for receiving a series of balls 82.
  • the assembly of threads 78' and 80' and balls 82 makes up a so-called ball circuit screw.
  • Fig. 7 also showns a ball return channel 83.
  • embodiment 70 The operation of the embodiment 70 is similar to that of embodiment 10.
  • the jaws By rotating the elements 74 and 76 relatively to each other, so that such elements are axially drawn closer to each other (condition of fig. 6), the jaws are spread apart or open, while by rotating the same elements relatively to each other so that the same are axially moved away from each other, the jaws are closed and a tractive force is applied.
  • Elements 34 and 36, or 74 and 76 may be rotated relatively to each other by any means as desired.
  • either disc will have integral long arms, of which only one has been partly shown in Figs. 1 and 6, and designated at 64.
  • the novel riveting machine may be preset for pneumatic, or fluid, or mechanical or electrical operation by means of well known expedients.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
EP82102870A 1981-04-09 1982-04-03 Nietmaschine für Hohlniete zum Aufbringen einer Zugkraft auf einen Nietdorn Withdrawn EP0062869A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2100581 1981-04-09
IT21005/81A IT1137442B (it) 1981-04-09 1981-04-09 Rivettatrice sfruttante piani inclinati per l'applicazione di trazione a una spina di ribattino

Publications (2)

Publication Number Publication Date
EP0062869A2 true EP0062869A2 (de) 1982-10-20
EP0062869A3 EP0062869A3 (de) 1982-12-15

Family

ID=11175288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102870A Withdrawn EP0062869A3 (de) 1981-04-09 1982-04-03 Nietmaschine für Hohlniete zum Aufbringen einer Zugkraft auf einen Nietdorn

Country Status (2)

Country Link
EP (1) EP0062869A3 (de)
IT (1) IT1137442B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124489B1 (de) * 1983-03-09 1988-01-07 TAC RIVETING SYSTEM di Oggionni Pier Giorgio & C. s.a.s. Dübel
WO1993001907A1 (en) * 1991-07-16 1993-02-04 Zenon Zoltaszek Rivetting apparatus
US5473805A (en) * 1991-08-12 1995-12-12 Gesipa Blindniettechnik Gmbh Tool for setting blind rivets
AU665563B2 (en) * 1991-07-16 1996-01-11 Zenon Zoltaszek Rivetting apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400354A (en) * 1942-09-28 1946-05-14 Whitney Metal Tool Company Rivet setting tool
US2723777A (en) * 1952-07-15 1955-11-15 Chicago Pneumatic Tool Co Power driven tool for upsetting tubular rivets or clinch nuts
US2923182A (en) * 1958-12-18 1960-02-02 Strother Installation device for pull-type fasteners
US3095106A (en) * 1961-12-28 1963-06-25 United Shoe Machinery Corp Automatic rivet setting tools
GB1327407A (en) * 1970-10-27 1973-08-22 Precision Screw & Mfg Tools for fixing tubular fasteners in position
US4063443A (en) * 1976-11-05 1977-12-20 H. K. Porter Company, Inc. Rod gripping tool for applying fasteners

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124489B1 (de) * 1983-03-09 1988-01-07 TAC RIVETING SYSTEM di Oggionni Pier Giorgio & C. s.a.s. Dübel
WO1993001907A1 (en) * 1991-07-16 1993-02-04 Zenon Zoltaszek Rivetting apparatus
GB2274799A (en) * 1991-07-16 1994-08-10 Zenon Zoltaszek Rivetting apparatus
GB2274799B (en) * 1991-07-16 1995-08-09 Zenon Zoltaszek Rivetting apparatus
US5471729A (en) * 1991-07-16 1995-12-05 Zoltaszek; Zenon Riveting apparatus
AU665563B2 (en) * 1991-07-16 1996-01-11 Zenon Zoltaszek Rivetting apparatus
US5473805A (en) * 1991-08-12 1995-12-12 Gesipa Blindniettechnik Gmbh Tool for setting blind rivets

Also Published As

Publication number Publication date
IT1137442B (it) 1986-09-10
EP0062869A3 (de) 1982-12-15
IT8121005A0 (it) 1981-04-09

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19831121

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Inventor name: PIZZINATO, GIOVANNI BATTISTA