FR2448946A1 - STAMPING PROCESS, WITH CENTRIPE CONFORMING OF THE BLANK - Google Patents

STAMPING PROCESS, WITH CENTRIPE CONFORMING OF THE BLANK

Info

Publication number
FR2448946A1
FR2448946A1 FR7904466A FR7904466A FR2448946A1 FR 2448946 A1 FR2448946 A1 FR 2448946A1 FR 7904466 A FR7904466 A FR 7904466A FR 7904466 A FR7904466 A FR 7904466A FR 2448946 A1 FR2448946 A1 FR 2448946A1
Authority
FR
France
Prior art keywords
blank
punch
transformation
action
metal
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Withdrawn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
FR7904466A
Other languages
French (fr)
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
Priority to FR7904466A priority Critical patent/FR2448946A1/en
Priority to EP19800420016 priority patent/EP0015218A1/en
Publication of FR2448946A1 publication Critical patent/FR2448946A1/en
Withdrawn legal-status Critical Current

Links

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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • B21D22/225—Deep-drawing with devices for holding the edge of the blanks with members for radially pushing the blanks

Abstract

PROCEDE D'EMBOUTISSAGE RATIONNEL ET EQUILIBRE, DANS LEQUEL LA TRANSFORMATION DU FLAN EN CORPS CREUX EST PROVOQUEE EN PRIORITE PAR UNE CONTRAINTE DE COMPRESSION RADIALE TENDANT A FORCER LE METAL DU FLAN VERS L'ORIFICE DE LA MATRICE, DE MANIERE A CE QUE L'ACTION DU POINCON SUR LE CENTRE DU FLAN NE CREE PAS UNE CONTRAINTE DE TRACTION SUSCEPTIBLE DE PROVOQUER UN AMINCISSEMENT OU UNE DECHIRURE, ET APPAREIL POUR LA MISE EN OEUVRE DU PROCEDE DANS LEQUEL DES ORGANES DE POUSSEE AGISSANT ENTRE PRESSE-FLAN ET MATRICE EXERCENT UNE CONTRAINTE DE COMPRESSION SUR LA TRANCHE DU FLAN QUI EST SYNCHRONISEE AVEC L'ACTION DU POINCON, PAR DES CAMES DEFINIES PAR LA LOI DE L'ECOULEMENT DU METAL DANS LA TRANSFORMATION CONCERNEE. L'INVENTION SUPPRIME LES LIMITES CONNUES DU RAPPORT D'EMBOUTISSAGE EN UNE SEULE FOIS, ET PERMET LES EMBOUTISSAGES DE PIECES DE FORME IRREGULIERE. IL SUPPRIME LES EFFETS DE L'ANISOTROPIE.RATIONAL AND BALANCED STAMPING PROCESS, IN WHICH THE TRANSFORMATION OF THE BLANK INTO A HOLLOW BODY IS PRIMARILY CAUSED BY A RADIAL COMPRESSION STRESS TENDING TO FORCE THE METAL OF THE BLANK TOWARD THE ORIFICE OF THE MATRIX, SO THAT THE ACTION OF THE PUNCH ON THE CENTER OF THE BLANK DOES NOT CREATE A TENSILE STRESS LIKELY TO CAUSE A THINNING OR A TEAR, AND APPARATUS FOR THE IMPLEMENTATION OF THE PROCESS IN WHICH PUSHING ORGANS ACTING BETWEEN PRESS-BLANK AND DIE EXERCISE A COMPRESSION ON THE SLICE OF THE BLANK WHICH IS SYNCHRONIZED WITH THE ACTION OF THE PUNCH, BY CAMS DEFINED BY THE LAW OF THE FLOW OF METAL IN THE TRANSFORMATION CONCERNED. THE INVENTION ELIMINATES THE KNOWN LIMITATIONS OF THE ONE-TIME STAMP RATIO, AND ALLOWS THE STAMPING OF IRREGULAR SHAPED PARTS. IT SUPPRESSES THE EFFECTS OF ANISOTROPY.

FR7904466A 1979-02-14 1979-02-14 STAMPING PROCESS, WITH CENTRIPE CONFORMING OF THE BLANK Withdrawn FR2448946A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7904466A FR2448946A1 (en) 1979-02-14 1979-02-14 STAMPING PROCESS, WITH CENTRIPE CONFORMING OF THE BLANK
EP19800420016 EP0015218A1 (en) 1979-02-14 1980-02-13 Apparatus for deep drawing with centripetal blank conformation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7904466A FR2448946A1 (en) 1979-02-14 1979-02-14 STAMPING PROCESS, WITH CENTRIPE CONFORMING OF THE BLANK

Publications (1)

Publication Number Publication Date
FR2448946A1 true FR2448946A1 (en) 1980-09-12

Family

ID=9222280

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7904466A Withdrawn FR2448946A1 (en) 1979-02-14 1979-02-14 STAMPING PROCESS, WITH CENTRIPE CONFORMING OF THE BLANK

Country Status (2)

Country Link
EP (1) EP0015218A1 (en)
FR (1) FR2448946A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523485A1 (en) * 1980-12-11 1983-09-23 Bulso Joseph Jr METHOD AND APPARATUS FOR FORMING A SHEET WITH SIGNIFICANT REDUCTION

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406823A (en) * 1991-01-18 1995-04-18 Nam Lee Industries (Pte) Ltd. Method of producing a main frame for a shipping container
DE10023533A1 (en) * 2000-05-13 2001-12-06 Blanco Gmbh & Co Kg Thermoforming process and thermoforming tool
CN101869944A (en) * 2010-04-15 2010-10-27 重庆理工大学 Forming die with shape-variable male die applying radial thrust by solid particle medium
JP6218895B2 (en) * 2016-07-05 2017-10-25 アイダエンジニアリング株式会社 Drawing machine
CN113732153A (en) * 2021-08-11 2021-12-03 岚图汽车科技有限公司 Drawing die and drawing equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH471608A (en) * 1966-11-04 1969-04-30 Western Electric Co Drawing process for shaping a blank from a plasticizable solid and device for carrying out the process
FR2124624A1 (en) * 1971-02-10 1972-09-22 Western Electric Co

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH471608A (en) * 1966-11-04 1969-04-30 Western Electric Co Drawing process for shaping a blank from a plasticizable solid and device for carrying out the process
FR2124624A1 (en) * 1971-02-10 1972-09-22 Western Electric Co

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WERKSTATT UND BETRIEB, vol.11, novembre 1966, MUNICH (DE) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523485A1 (en) * 1980-12-11 1983-09-23 Bulso Joseph Jr METHOD AND APPARATUS FOR FORMING A SHEET WITH SIGNIFICANT REDUCTION

Also Published As

Publication number Publication date
EP0015218A1 (en) 1980-09-03

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Legal Events

Date Code Title Description
ST Notification of lapse