EP0664170B1 - Verbesserungen an Werkzeugen zum Herstellen von Punktverbindungen an Platten - Google Patents

Verbesserungen an Werkzeugen zum Herstellen von Punktverbindungen an Platten Download PDF

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Publication number
EP0664170B1
EP0664170B1 EP19940400146 EP94400146A EP0664170B1 EP 0664170 B1 EP0664170 B1 EP 0664170B1 EP 19940400146 EP19940400146 EP 19940400146 EP 94400146 A EP94400146 A EP 94400146A EP 0664170 B1 EP0664170 B1 EP 0664170B1
Authority
EP
European Patent Office
Prior art keywords
anvil
tool
shells
point
sheets
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
EP19940400146
Other languages
English (en)
French (fr)
Other versions
EP0664170A1 (de
Inventor
Jean-Claude Chabod
Jean-Claude Faivre
Letterio Sturniolo
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.)
HOMAX AG
Original Assignee
HOMAX AG
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 HOMAX AG filed Critical HOMAX AG
Priority to DE1994613198 priority Critical patent/DE69413198T2/de
Priority to ES94400146T priority patent/ES2123723T3/es
Priority to EP19940400146 priority patent/EP0664170B1/de
Publication of EP0664170A1 publication Critical patent/EP0664170A1/de
Application granted granted Critical
Publication of EP0664170B1 publication Critical patent/EP0664170B1/de
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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding

Definitions

  • the present invention relates to the production sheet metal assembly points.
  • the invention relates to in particular a tool for making points sheet metal assembly according to the preamble of claim 1, in which is superimposed, at least two sheets and, using a punch and a matrix, we realize simultaneously in said sheets from a face, a cavity to form, on the other side a projection, the cavity of one of the sheets receiving the projection of the other, this so-called cavity forming an enlargement in the vicinity of its bottom, while the protrusion, by creep, forms a flare fitting into the enlargement.
  • Such a technique is notably described in GB Patent No. 2,189,175, which shows a tool according to the preamble of claim 1, and is known in the language commonly known as "clinching".
  • One of the aims of the present invention is to remedy these various drawbacks.
  • a tool for the realization sheet metal assembly points with a top tool including a punch with a blank holder and a lower tool comprising a matrix with an anvil and shells applied elastically against the side wall of the anvil and mounted sliding in opposite radial directions on a surface for guiding said lower tool against the action of means elastic, characterized in that the shells of the lower tool have an internal lateral extension which cover part of the upper surface of the anvil in the vicinity of the side wall thereof.
  • a tool comprising an upper tool 1 and a lower tool 2.
  • the upper tool 1 includes a shank 3 allowing to fix it to the mandrel of a jack, a shoulder 4 against which bears a blank holder 5 having a shoulder 6 cooperating with a ferrule 7. The free end of tool 1 being terminated by a punch 9.
  • the tool 2 consists of a body 11 intended to be fixed on a machine and extended upwards by an anvil 12. At the base of the anvil 12 extends a ring protruding 13 which forms, on the upper face, a surface guide 14 and, on the underside, a shoulder 15.
  • a sleeve 18 made of flexible and elastic material, for example rubber or plastic, this sleeve, at its lower end, have a ring 19 intended to cooperate with a groove 20 delimited by the underside of the ring 13 and the body 11 of the tool.
  • the shells 16, at their upper end, have an internal lateral extension 21 which covers part of the upper surface of the anvil 12 in the vicinity of the side wall thereof. Between tool 1 and the tool 2 are inserted two sheets 22 and 23 to be assembled.
  • the shells at their upper end extend, by their surface internal to the right of the side wall of the anvil.
  • the blank holder blocks the two sheets against the upper free ends of shells and the punch is engaged in the thickness of said sheets so that it is formed in the top sheet a cavity which, on the face applied against the sheet, determines a projection fitting into a cavity formed in said upper sheet.
  • Figures 3 and 4 show a point assembly carried out according to the prior art and the sheets have been designated by the references 22a and 23a.
  • the point obtained has a flat surface 30 which corresponds to the surface anvil and which is bordered by a corresponding bead 31 to the part of the material extending beyond the anvil and delimited by the shells.
  • Figures 5, 6 and 7 show a point obtained, according to the invention.
  • a cavity 33 which has, in the vicinity of its bottom 34, a widening 35, while in the sheet 23 is formed a cavity 37 which determines a projection 38 whose material, by creep presents a flare 39 fitting into the widening 35.
  • the extensions 21 prevent the sheet 22 from flowing along from the side edge of the anvil 12, so that a flat assembly point, corresponding to the anvil surface, and not bordered by a bead.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Food-Manufacturing Devices (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (1)

  1. Werkzeug zur Herstellung von Punktverbindungen von Blechen mit einem Oberwerkzeug (1), das einen Stempel (9) mit einem Niederhalter (5) aufweist, und einem Unterwerkzeug (2), das eine Matrize mit einem Amboß (12) und Schalen (16) aufweist, die federnd gegen die Seitenwand des Ambosses (12) angelegt und in zueinander entgegengesetzten radialen Richtungen auf einer Führungsfläche (14) des genannten zweiten Unterwerkzeuges (2) gegen die Wirkung von Federmitteln (18) verschiebbar angeordnet sind, dadurch gekennzeichnet, daß die Schalen (16) des zweiten Unterwerkzeuges (2) eine innere seitliche Verlängerung (21) aufweisen, die einen Teil der oberen Oberfläche des Ambosses (12) in der Nähe von dessen Seitenwand überdeckt.
EP19940400146 1994-01-24 1994-01-24 Verbesserungen an Werkzeugen zum Herstellen von Punktverbindungen an Platten Expired - Lifetime EP0664170B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1994613198 DE69413198T2 (de) 1994-01-24 1994-01-24 Verbesserungen an Werkzeugen zum Herstellen von Punktverbindungen an Platten
ES94400146T ES2123723T3 (es) 1994-01-24 1994-01-24 Mejoras de las herramientas para la realizacion de puntos de union de las chapas.
EP19940400146 EP0664170B1 (de) 1994-01-24 1994-01-24 Verbesserungen an Werkzeugen zum Herstellen von Punktverbindungen an Platten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19940400146 EP0664170B1 (de) 1994-01-24 1994-01-24 Verbesserungen an Werkzeugen zum Herstellen von Punktverbindungen an Platten

Publications (2)

Publication Number Publication Date
EP0664170A1 EP0664170A1 (de) 1995-07-26
EP0664170B1 true EP0664170B1 (de) 1998-09-09

Family

ID=8217977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940400146 Expired - Lifetime EP0664170B1 (de) 1994-01-24 1994-01-24 Verbesserungen an Werkzeugen zum Herstellen von Punktverbindungen an Platten

Country Status (3)

Country Link
EP (1) EP0664170B1 (de)
DE (1) DE69413198T2 (de)
ES (1) ES2123723T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743277C2 (de) * 1997-09-30 2002-06-13 Boellhoff Gmbh Einstellhilfe für eine aus Stempelwerkzeug und Gegenwerkzeug bestehende Fügeeinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4757609A (en) * 1980-09-08 1988-07-19 Btm Corporation Apparatus for joining sheet material
US5031442A (en) * 1985-06-03 1991-07-16 Btm Corporation Punch anvils for sheet fastening systems
US4660403A (en) * 1985-12-19 1987-04-28 Weldex, Inc. Die assembly
NZ237649A (en) * 1990-04-03 1993-10-26 Edward Leslie Theodore Webb Clinching apparatus with split collet die for joining overlapping sheets of material

Also Published As

Publication number Publication date
DE69413198T2 (de) 1999-07-29
ES2123723T3 (es) 1999-01-16
EP0664170A1 (de) 1995-07-26
DE69413198D1 (de) 1998-10-15

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