EP0376822B1 - Procédé et dispositif de rivetage - Google Patents

Procédé et dispositif de rivetage Download PDF

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Publication number
EP0376822B1
EP0376822B1 EP19890403618 EP89403618A EP0376822B1 EP 0376822 B1 EP0376822 B1 EP 0376822B1 EP 19890403618 EP19890403618 EP 19890403618 EP 89403618 A EP89403618 A EP 89403618A EP 0376822 B1 EP0376822 B1 EP 0376822B1
Authority
EP
European Patent Office
Prior art keywords
parts
pressure
rivet
blank
actuators
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
EP19890403618
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0376822A1 (fr
Inventor
Jean Sell
Jacques Jaillon
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.)
Recoules Automation
Original Assignee
Recoules Automation
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Filing date
Publication date
Application filed by Recoules Automation filed Critical Recoules Automation
Publication of EP0376822A1 publication Critical patent/EP0376822A1/fr
Application granted granted Critical
Publication of EP0376822B1 publication Critical patent/EP0376822B1/fr
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
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • 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

Definitions

  • the subject of the present invention is a method for setting rivets and a device for implementing said method, intended in particular, but not exclusively, for headless rivets (see for example US-A-4,048,708 and FR-A- 1,580,439 which correspond to the preambles of claims 1 and 2 respectively).
  • Riveting is a joining technique that has been used for a very long time. It consists in introducing into a hole common to two parts, a rivet comprising a head and a rod, then applying to the end of the rod opposite to the head, a pressure causing the deformation of this end to form a second head. The two assembled parts are thus trapped between the two heads. But it was found that the connection thus obtained was strengthened if the total volume of the orifice common to the two parts was filled with the material constituting the rivet.
  • US-A 4101 064 describes a riveting apparatus for headless rivets.
  • the outline of the rivet is introduced into the orifice by the upper dowel while being held in position by an elastic ring. But the lower dowel remains fixed, the lower sheet clamp making a downward movement during the formation of the heads. This results from a unique force acting from top to bottom.
  • US-A-4,048,708 describes a riveting process in which at least one head of the rivet is formed in the flare of a countersunk hole. A cylindrical boot is inserted into the hole and is symmetrically deformed in the longitudinal and radial directions. The excess parts of the heads are then removed by grating.
  • US-A-4133 096 describes a method and an apparatus for riveting in which the crushing of the rivet heads is obtained by displacement of two anvils towards one another. But the parts to be assembled are mounted floating relative to a fixed tool so that they move with the mobile tool.
  • the present invention is based on the idea that in order to obtain an effective riveting, whose resistance over time is optimal, the parts must not move during the formation of the rivet.
  • the formation of the heads is obtained by the same simultaneous pressure of the two snaps so that the assembly is, during the formation of the heads in perfect equilibrium which avoids the use mechanical guides of the type described in the prior art.
  • the movement of the snaps is controlled using a pressure gauge without any movement of the parts to be riveted.
  • the object of the present invention is to overcome the drawbacks of known devices and to allow a mechanically optimal fixing of two parts by riveting.
  • the limited pressure operation is intended to crush the rivet inside the cavity formed by the hole.
  • the application of an axial force leads, due to the reaction exerted on the other side of the rivet, to a radial expansion of the latter which firmly presses the external surface of the rivet against the internal wall of the hole.
  • the heads are formed by the simultaneous application of equal pressures and opposite directions exerted on the ends of the rivet, so as to form the heads.
  • the present invention also relates to a riveter designed for the implementation of the above process comprising a "C" frame and two main hydraulic cylinders mounted on the same axis in opposite directions, characterized in that: The two cylinders are actuated by a single pump through the two branches of the same pipe, the same pressure controlled by a pressure limiter being applied to the jacks, producing the crushing force, the pressure in the pipe being measured by a pressure gauge, a first sheet clamp being integral with the frame and a second sheet clamp being mounted on the rod of the lower jack via an auxiliary jack, a sequence valve being mounted in said pipe between the main jacks.
  • FIG. 1 to 7 two parts A and B are shown to be assembled.
  • the parts are, at first, clamped by a sheet clamp comprising an upper jaw 1 and a lower jaw 2.
  • One of the two jaws 1 or 2 is fixed (jaw 1 in the figure), while the second (jaw 2) is controlled by a pneumatic cylinder or any other similar means.
  • the clamping of the parts A and B is of course ensured by the movable jaw 2, the reaction coming from the fixed jaw 1.
  • a chuck 3 which is in the low position.
  • the action of the pneumatic cylinder is symbolized by the arrow F S.
  • the next operation consists of drilling with a drill bit 4 which can pass through parts A and B to form, in them, a cylindrical orifice 5.
  • a clamp 6 brings then the blank of the rivet 7 and makes it penetrate into the hole 5.
  • the blank can slide freely in the orifice 5 , until its lower end comes into contact, as shown in Figure 4, with the lower chuck 3.
  • the term "lower” refers to the accompanying drawings. It will be noted that, although the parts A and B have been shown in a horizontal position, the method can be implemented regardless of the position of the different members involved in the process.
  • the clamp 6 then disappears, and an upper bolt 9, adjustable on the rod 8 of an upper cylinder 10, descends, or more generally moves, so as to reach a position of level x1 with respect to the upper surface of the part A.
  • the lower head 3 occupies a position such that its upper surface is spaced x de from the lower surface of the part B.
  • the rod 7 of the rivet rests, by its end lower, on the upper surface of the rivet 3.
  • a first movement of the rivet 3 causes the rivet 7 to rise, so that its upper end comes to bear against the rivet 9 immobilized at the distance x1, this dimension making it possible to share correctly the material of the rivet on either side of the parts to be assembled, so as to obtain correct dimensions of the heads of the rivet.
  • This first step can be replaced by the next if the section of the rivet rod is slightly greater than the section of the hole, to obtain a fitting assembly.
  • the rivet 7 is forced into the hole 5 by action of the chuck 9.
  • the insertion force is contained by the sheet clamp 2 so as to that parts A and B are not subjected to any vertical stress.
  • the pressure of the upper bolt is maintained until the lower part of the rivet suddenly comes into contact with the bolt 3. It was found that this shock caused a release of the tensions resulting from the force of the rivet.
  • the final step which consists in the formation of the rivet heads is shown in FIG. 7.
  • the same force F2 that is to say the same pressure
  • the snaps 3 and 9 which avoids the application on parts A and B of undesirable stresses. It is thus possible to obtain control of the value applied for crushing the rivet.
  • the formation of the heads, on either side of the parts to be assembled, is obtained, according to a characteristic of the invention, by the known balanced and adjustable thrust of jacks whose rods are secured respectively to the snaps 3 and 9.
  • the two pressure systems are mechanically independent. Parts A and B constitute the fixed reference plane with respect to the two jacks constituting the driving elements.
  • FIG. 8 represents a riveting machine allowing the implementation of the method.
  • elements such as sheet clamps 1 and 2, the parts to be assembled A and B, the lower bolt 3 and the upper bolt 9, these bolts, for the sake of simplification, being shown as the rods of two opposing cylinders, respectively 11 and 12, integral with a frame 13.
  • the two cylinders 11, 12 are controlled by a pump 14 driven by a motor 15.
  • the pump 14 is connected to a reservoir 16. It acts by through a distributor 17 through the pipe 18 on the actuator 11 at first, which allows to have the chuck 3 at the x2 level ( Figure 4).
  • a sequence valve 19 is also mounted, the outlet pipe 20 of which is connected to the jack 12.
  • Pressure gauges 21 are mounted on the outlets 22 and 23 of the jack 12 and 11.
  • the jacks 11 and 12 have, after opening of the sequence valve 19, a common supply from the pump 14. An identical pressure is therefore established in the jacks 11 and 12 during the formation of the heads of the rivet which constitutes the final phase of the process, on either side of the heads to be assembled.
  • a pressure limiter 24 is mounted on the outlet pipe 22 of the jack 12. It fixes the pressure maximum that can be applied by the cylinders.
  • a pressure reducer 25 is mounted between the pressure limiter 21 and the outlet of the jack 12. The reducer 25 makes it possible to vary the resulting push of the upper jack 12 so that the balance between the push of the jack 11 and the push of the cylinder 12 is constantly maintained during the crushing phase of the rivet heads.
  • a distributor 26, connected to the pipe 20, allows the displacement upwards of the jack rod 9, when the riveting operation is finished.
  • the sheet clamp 2 is subjected to the action of a pneumatic cylinder 28 integral with the rod of the cylinder 11, in order to avoid excessively large strokes of the blank holder 2.
  • a pipe 27 connects the outlet 23 from cylinder 11 to distributor 17 to allow the rod 3 to descend.
  • the operation of the device is as follows: After drilling the two pieces of sheet metal to be assembled A and B, the rivet is introduced into the orifice 5 as indicated above.
  • the motor 15 drives the pump 14 which, by the pipe 18, causes the bolt 3 to be fixed to the rod of the jack 11 at level x availability as shown in more detail in FIG. 4.
  • the bolt and the rod 9 of the jack 12 are then in a stationary position at the dimension x1 predetermined as a function of the diameter of the hole 5 and of the rivet 7.
  • the rivet is crushed by the bolt 3, the bolt 9 acting at this time as an anvil, so as to cause swelling of its middle part located in the orifice 5.
  • P1 a value
  • the present invention makes it possible to obtain a machine of relatively small dimensions, when the machine is mobile, or in any case, when the machine is stationary, with moderate arm sections.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
EP19890403618 1988-12-26 1989-12-22 Procédé et dispositif de rivetage Expired - Lifetime EP0376822B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8817173 1988-12-26
FR8817173A FR2640897B1 (enrdf_load_stackoverflow) 1988-12-26 1988-12-26

Publications (2)

Publication Number Publication Date
EP0376822A1 EP0376822A1 (fr) 1990-07-04
EP0376822B1 true EP0376822B1 (fr) 1994-07-27

Family

ID=9373414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890403618 Expired - Lifetime EP0376822B1 (fr) 1988-12-26 1989-12-22 Procédé et dispositif de rivetage

Country Status (3)

Country Link
EP (1) EP0376822B1 (enrdf_load_stackoverflow)
DE (1) DE68917118T2 (enrdf_load_stackoverflow)
FR (1) FR2640897B1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060362A (en) * 1990-07-10 1991-10-29 Gemcor Engineering Corp. Slug riveting method and apparatus with C-frame deflection compensation
US5259104A (en) * 1990-12-21 1993-11-09 The Boeing Company Rivet recovery method
DE102011002058A1 (de) * 2011-04-14 2012-10-18 Böllhoff Verbindungstechnik GmbH Hydraulisch betriebenes Setzgerät mit einem Hydraulikaggregat und ein Fügeverfahren zum Verbinden von mindestens zwei Bauteilen
DE102013111594B4 (de) 2013-10-21 2015-04-30 Federal-Mogul Bremsbelag Gmbh Verfahren zur Herstellung eines Trägerkörpers mit Tilgermasse zur Veränderung der Schwingung für einen Bremsbelag einer Scheibenbremse
US10160029B2 (en) 2014-10-22 2018-12-25 Ford Global Technologies, Llc System and method for assembling vehicle components with reinforced moldable rivet
US9815499B2 (en) 2014-10-22 2017-11-14 Ford Global Technologies, Llc Reinforced moldable rivet assembly for a vehicle
CN109317594B (zh) * 2018-11-26 2020-12-15 首都航天机械有限公司 一种无头铆钉用压铆铆接定位工具的使用方法
CN109433997A (zh) * 2018-12-27 2019-03-08 南京航空航天大学 一种旋转摩擦挤压铆接装置及其铆接方法
CN112157208A (zh) * 2020-09-20 2021-01-01 广州市创搏装饰工程有限公司 一种用于铝型材的冲铆装置及其冲铆方法
CN116197339B (zh) * 2023-02-27 2023-07-25 宣城东海汽车转向部件有限公司 一种汽车转向传动轴油封密封盖压铆装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR505834A (fr) * 1916-08-24 1920-08-07 Hoffmann & Staden Eisengiesser Procédé de confection de rivures
US3391449A (en) * 1966-01-17 1968-07-09 Franklin S. Briles Method of making a prestressed riveted connection
FR1580439A (enrdf_load_stackoverflow) * 1968-07-09 1969-09-05
US3952401A (en) * 1975-06-30 1976-04-27 The Boeing Company Process for installing fatigue-rated rivets
US4048708A (en) * 1976-05-17 1977-09-20 Briles Franklin S Riveting method expanding a work counterbore
US4060189A (en) * 1976-10-26 1977-11-29 General-Electro Mechanical Corporation Slug riveting apparatus
US4133096A (en) * 1977-07-05 1979-01-09 Boeing Commercial Airplane Company Apparatus and method for self-positioning a squeezed rivet
US4192058A (en) * 1977-10-11 1980-03-11 The Boeing Company High fatigue slug squeeze riveting process using fixed upper clamp and apparatus therefor

Also Published As

Publication number Publication date
EP0376822A1 (fr) 1990-07-04
FR2640897B1 (enrdf_load_stackoverflow) 1994-05-06
FR2640897A1 (enrdf_load_stackoverflow) 1990-06-29
DE68917118D1 (de) 1994-09-01
DE68917118T2 (de) 1995-01-26

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