EP0921893A1 - Procede de liaison d'une piece plastifiable avec une autre piece - Google Patents

Procede de liaison d'une piece plastifiable avec une autre piece

Info

Publication number
EP0921893A1
EP0921893A1 EP97935488A EP97935488A EP0921893A1 EP 0921893 A1 EP0921893 A1 EP 0921893A1 EP 97935488 A EP97935488 A EP 97935488A EP 97935488 A EP97935488 A EP 97935488A EP 0921893 A1 EP0921893 A1 EP 0921893A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
friction element
workpieces
friction
base
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Withdrawn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
EP97935488A
Other languages
German (de)
English (en)
Inventor
Burkhardt Suthoff
Andreas Schaaf
Holger Hentschel
Udo Franz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0921893A1 publication Critical patent/EP0921893A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1265—Non-butt welded joints, e.g. overlap-joints, T-joints or spot welds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0681—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding created by a tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
    • B29C65/609—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking the integral rivets being plunge-formed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7437—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a perforating tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis

Definitions

  • the invention relates to a method for connecting or joining one plasticizable workpiece to another, which can also be plasticized, i.e. for example two or more plasticizable, in particular metallic, workpieces.
  • the invention further relates to a friction element and a device for carrying out the method according to the invention.
  • connection techniques for plasticizable or metallic workpieces based on a welded connection are already known.
  • the known joining techniques have serious disadvantages in that they are extremely cost-intensive and expensive Equipment or special material preparation is required, even then some material pairs are practically impossible to join.
  • the present invention has for its object to provide a method for connecting or joining a plasticizable or metallic workpiece with another, in which the mentioned and other disadvantages are avoided.
  • the joining zone of the workpieces is formed by a mechanism that is similar to the joining process known from friction welding.
  • the invention is achieved by a friction element and a device for carrying out the method according to the invention.
  • the friction element which is preferably designed as a rotating stamp, forms an annular wall of partially or completely melted material due to the activation or generation of heat by frictional forces, which, due to the pressure of the stamp and due to centrifugal and capillary forces, uniformly into the joint between the workpieces and into the space between the circumferential surface of the stamp and surrounding material is introduced.
  • the advantages of the method according to the invention include, in particular, the fact that it does not require additional welding aids such as additional welding material or fuel gases.
  • additional welding aids such as additional welding material or fuel gases.
  • the connection zone between the workpieces consists exclusively of the material of the workpieces themselves.
  • the method according to the invention can also be carried out without the use of electricity by operating a corresponding device, for example with compressed air.
  • FIG. 1 to 5 are cross-sectional views of two workpieces in successive phases of the manufacture of the workpiece assembly, and Fig. 6 shows a composite of three workpieces in cross section.
  • Fig. 1 shows two plate-shaped, superimposed workpieces 1 and 2, which can be, for example, sheets or parts of hollow profiles to be connected to one another. The two parts are firmly pressed together. However, it is not necessary to treat the surfaces of the workpieces 1 and 2 in the area of the joining or contact zone 3 specifically, to remove rolled or oxide skins or the like, as is required for spot welding, since the joining mechanism is completely different.
  • a rotating punch 4 is moved against the surface of the workpiece 1 and pressed firmly against it while maintaining its rotation (FIG. 2).
  • the stamp is rotated by means of a drive unit, not shown.
  • the stamp can be made of the same material as workpieces 1 or 2, but is preferably made of a harder and / or higher melting material. In order to prevent material from the workpieces 1 and 2 from temporarily sticking to the stamp 4 during the friction welding process, this can also consist of hard metal or have a special coating.
  • a physically-chemically highly active product forms between the rotating punch 4 and the material in contact with it.
  • zeßzone in which there is first dry friction and then mixed friction. In the area of mixed friction, the proportion of dry friction decreases and that of fluid friction increases.
  • Individual melting islands are formed in the area of the process zone, which, partly due to the centrifugal force and partly due to the contact pressure of the stamp, reach its peripheral or peripheral zone and form a bead-like material accumulation 5 there (FIG. 3).
  • the circumferential area of the punch 4, which has already partially penetrated the workpiece 1, is increasingly filled with plasticized or melted material.
  • the punch is advanced so far in the direction of the base workpiece 2 until at least its end face is in the contact plane or joining zone, preferably a little further into the base workpiece 2, as shown in FIG. 4 .
  • This is done so that the melted or plasticized amount of material, which is displaced by the penetration of the punch into the base workpiece 2, is at least partially pressed into the gap between the two workpieces, as denoted by 6 in FIG.
  • the penetration of the material into this area of the joining zone is supported on the one hand by the centrifugal forces due to the rotation of the punch and on the other hand by the capillary forces in the gap.
  • the stamp is also surrounded along its circumferential surface by a layer of at least partially melted material.
  • the stamp can be provided on its circumference with a cutting device which ensures that the bead 5, which does not contribute to the strength of the connection, is immediately removed.
  • connection zone 7 a cylindrical, essentially rotationally symmetrical, sleeve or hollow rivet-like connection zone 7 generated between the workpieces. This consists exclusively of the materials of the workpieces involved, provided that the stamp is harder or has a higher melting point, whereby it is possible due to the specific properties of a friction welded joint to connect very different or conventionally difficult to join materials, such as aluminum sheets or steel and Aluminum.
  • the method according to the invention can also be used with more than two workpieces, two workpieces 1 and 1 a being arranged on a base work piece 2 in the example shown and the reaming punch completely penetrating both work pieces 1, 1 a.
  • two mutually working friction punches are used on both sides of the workpiece assembly, which are pushed in the direction of one another. This would make a device for supporting the workpieces or for absorbing the force introduced unnecessary.
  • a device, not shown, for executing the method according to the invention is described in claims 12 and 13. Since the heat generated by the rotation or relative movement of the friction element relative to the workpieces decreases with increasing plasticization of the material and the associated decrease in the coefficient of friction, it is expedient to provide a speed control of the friction ram depending on the feed path or speed and / or contact pressure . In this way, an optimal and reproducible material temperature can be achieved during the connection process, and the time required to establish a connection can also be minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention concerne un assemblage de deux pièces métalliques, obtenu par placage d'une première pièce contre la zone d'assemblage d'une pièce de base et par application sur la première pièce d'un élément de friction qui se déplace par rapport aux deux pièces dans le sens de la zone d'assemblage. L'élément de friction pénètre à travers la première pièce en produisant une masse fondue et refoule cette masse fondue au niveau de la zone d'assemblage après quoi, l'élément de friction est retiré de la liaison. Les deux pièces sont ainsi assemblées au niveau de la zone d'assemblage par une soudure par friction.
EP97935488A 1996-07-26 1997-07-23 Procede de liaison d'une piece plastifiable avec une autre piece Withdrawn EP0921893A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19630271A DE19630271C2 (de) 1996-07-26 1996-07-26 Verfahren zum Verbinden eines plastifizierbaren Werkstücks mit einem anderen Werkstück
DE19630271 1996-07-26
PCT/DE1997/001582 WO1998004381A1 (fr) 1996-07-26 1997-07-23 Procede de liaison d'une piece plastifiable avec une autre piece

Publications (1)

Publication Number Publication Date
EP0921893A1 true EP0921893A1 (fr) 1999-06-16

Family

ID=7800983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97935488A Withdrawn EP0921893A1 (fr) 1996-07-26 1997-07-23 Procede de liaison d'une piece plastifiable avec une autre piece

Country Status (4)

Country Link
EP (1) EP0921893A1 (fr)
AU (1) AU3846997A (fr)
DE (1) DE19630271C2 (fr)
WO (1) WO1998004381A1 (fr)

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DE19803392C2 (de) * 1998-01-29 2000-08-03 Daimlerchrysler Aerospace Ag Verfahren zur Herstellung einer Lotverbindung, Lotverbindung und deren Verwendung
US6227432B1 (en) * 1999-02-18 2001-05-08 Showa Aluminum Corporation Friction agitation jointing method of metal workpieces
DE19917071C2 (de) * 1999-04-15 2001-04-26 Slv Muenchen Gmbh Reibschweißverfahren
US6800512B1 (en) 1999-09-16 2004-10-05 Matsushita Electric Industrial Co., Ltd. Method of forming insulating film and method of fabricating semiconductor device
NO995093D0 (no) * 1999-10-19 1999-10-19 Norsk Hydro As Fremgangsmåte og anordning for punktsveising
DE19955737B4 (de) * 1999-11-18 2005-11-10 Gkss-Forschungszentrum Geesthacht Gmbh Verfahren und Vorrichtung zum Verbinden von wenigstens zwei aneinanderliegenden Werkstücken nach der Methode des Reibrührschweißens
DE19956963B4 (de) 1999-11-18 2005-12-29 Gkss-Forschungszentrum Geesthacht Gmbh Einrichtung zum Verbinden von wenigstens zwei wenigstens im Verbindungsbereich aneinanderliegenden Werkstücken nach der Methode des Reibrührschweißens
JP3429475B2 (ja) 2000-05-08 2003-07-22 川崎重工業株式会社 スポット接合装置およびスポット接合方法
US7017792B2 (en) † 2001-02-02 2006-03-28 Mitsubishi Heavy Industries, Ltd. Integrated piping plate, machining method for same, machining apparatus for same, and machining equipment for same
JP3471338B2 (ja) 2001-07-30 2003-12-02 川崎重工業株式会社 摩擦攪拌接合装置
JP3538406B2 (ja) 2001-10-17 2004-06-14 川崎重工業株式会社 摩擦攪拌接合装置
US6742697B2 (en) * 2002-04-29 2004-06-01 The Boeing Company Joining of structural members by friction plug welding
JP4148152B2 (ja) 2004-02-16 2008-09-10 マツダ株式会社 摩擦点接合構造
DE102006013529B4 (de) 2005-03-23 2019-01-31 Böllhoff Verbindungstechnik GmbH Verfahren zum Fügen von Werkstücken
DE102005056606A1 (de) 2005-11-28 2007-07-19 Gkss-Forschungszentrum Geesthacht Gmbh Verfahren zum Verbinden eines metallischen Bolzens mit einem Kunststoff-Werkstück
DE102006053800A1 (de) * 2006-11-15 2008-05-21 Ejot Gmbh & Co. Kg Reibschweißverbindung von zwei aufeinander liegenden flächigen Bauteilen
DE102007058393A1 (de) * 2007-12-03 2009-06-04 Volkswagen Ag Verfahren zum Fügen von zumindest zwei Bauteilen
JP4591547B2 (ja) * 2008-05-26 2010-12-01 株式会社豊田中央研究所 接合体およびその製造方法

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US3548487A (en) * 1967-06-30 1970-12-22 Rockwell Standard Co Method and apparatus for friction welding
JPS512655A (en) * 1974-06-25 1976-01-10 Sanmei Denki Kk Fukaatarimenno hokyohoho
DE3226362C2 (de) * 1982-07-14 1984-08-16 Kuka Schweissanlagen + Roboter Gmbh, 8900 Augsburg Verfahren zum Abbremsen von Reibschweißmaschinen beim Reibschweißen von Teilen mit genauer Winkelposition nach dem Schweißen
GB9125978D0 (en) * 1991-12-06 1992-02-05 Welding Inst Hot shear butt welding
US5435673A (en) * 1994-01-12 1995-07-25 Rangel; Louis Multi-purpose arrow assembly tool
NO942790D0 (no) * 1994-03-28 1994-07-27 Norsk Hydro As Fremgangsmåte ved friksjonssveising og anordning for samme

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9804381A1 *

Also Published As

Publication number Publication date
DE19630271A1 (de) 1998-04-23
AU3846997A (en) 1998-02-20
DE19630271C2 (de) 2002-06-06
WO1998004381A1 (fr) 1998-02-05

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