EP0591732A1 - Procédé pour la fabrication d'une clé ouverte - Google Patents

Procédé pour la fabrication d'une clé ouverte Download PDF

Info

Publication number
EP0591732A1
EP0591732A1 EP93114959A EP93114959A EP0591732A1 EP 0591732 A1 EP0591732 A1 EP 0591732A1 EP 93114959 A EP93114959 A EP 93114959A EP 93114959 A EP93114959 A EP 93114959A EP 0591732 A1 EP0591732 A1 EP 0591732A1
Authority
EP
European Patent Office
Prior art keywords
key
spanner
polygonal
mouth
nut
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.)
Granted
Application number
EP93114959A
Other languages
German (de)
English (en)
Other versions
EP0591732B1 (fr
Inventor
Massimo Procino
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.)
Utensilerie Associate SpA
Original Assignee
Utensilerie Associate SpA
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 Utensilerie Associate SpA filed Critical Utensilerie Associate SpA
Publication of EP0591732A1 publication Critical patent/EP0591732A1/fr
Application granted granted Critical
Publication of EP0591732B1 publication Critical patent/EP0591732B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/16—Making tools or tool parts, e.g. pliers tools for turning nuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type

Definitions

  • the present invention relates to a method for producing an open ring key, and the invention further relates to an open ring key which is produced using the proposed method.
  • Keys with an open ring are tools that are mainly used in the assembly of hydraulic systems, for example in the braking systems of a motor vehicle. These tools, which are usually designed as polygonal keys, have a mouth-like opening on their front and in accordance with the surfaces that delimit the polygonal key mouth, an open contact surface is provided, which is directed towards the center of the key mouth. This makes it possible when using such a key to push the tool over the open mouth onto the hydraulic line, which is designed, for example, as a tube, and then to move the key along the hydraulic pipe.
  • the polygonal recess of the key with an open ring comes into operative connection with the nut for fixing the pipeline and, thanks to the support surface provided on the circumference, which is arranged on one side of the ring key provided with the opening, the key's mouth is unintentionally loosened or slipping off the mother because the thickened circumferential surface of the key rests on the mother. This prevents an unwanted loosening of the key mouth from the mother.
  • the desired polygonal key shape is produced on the key head as a non-continuous, cup-shaped, flat body.
  • each blank of the key head is to be subjected to machining, with which the bottom of the cup-shaped raw body is cut off, in order to create a contact surface for the polygonal structure of the key head on the nut.
  • the object of the above invention is to address the disadvantages to avoid the prior art and to propose a new method for the production of open ring keys, with which method it is possible to produce an open ring key economically, the polygonal mouth of which has the greatest precision on the inside.
  • the advantage is achieved that the raw body of the open ring key can be produced quickly and economically by a hot pressing process or a forging process, in accordance with the production methods for known keys.
  • the exact dimensions, as well as the inner circumferential shape of the key mouth, as in a conventional fork wrench, are processed in one work process, but additionally by a subsequent plastic deformation, e.g. B. by a pressing or stamping process, which can be carried out with a simple auxiliary tool, it is possible to produce the entire circumferential thickening that protrudes to the inside of the key mouth. This ensures a secure support of the open mouth of the ring wrench, e.g. B. on a hex nut.
  • the open ring key designed according to the invention is identified overall by 1 and has an extension 2 or a stem, at the end of which a fork-like head 3 is provided which circumscribes the mouth 4 of the open ring key.
  • the key 1 has an opening 5 on its front to the passage, z. B. a hydraulic line 8 ', which is shown with chain lines.
  • the key head 3 On its inside, the key head 3 has side walls 6, which circumscribe a hexagon, an octagon or any polygon or another suitable profile, which has a clear width (a) corresponding to the dimensions of the nut with which the key 1 is positively connected to be brought.
  • a thickening 7 which extends in the circumferential direction, the thickening 7 projecting towards the inside of the key head 3.
  • the thickening forms a support for the key head 3 as soon as it is placed on a nut 9 to be actuated (FIG. 3).
  • Fig. 3 shows a hydraulic line 8, with the aid of a nut 9, which is usually made of aluminum or a other relatively light and soft material.
  • the key 1, 3 was used as a blank, e.g. B. manufactured by a hot pressing process or a forging process, an excess metal was left in accordance with the walls 6 (inside width a).
  • the inner key mouth 4 of the head 3 is subjected to precision machining, e.g. B. subjected to a clearing process. This machining removes the remaining excess material and determines the dimension of the clear width (a) with very high precision.
  • the thickening 7 necessary in the circumferential direction of the key mouth for securely resting the key head 3 on a nut is produced.
  • the head 3 of the key 1 is placed in a pressing tool 10, the raised part 11 of which fills the free space 4 of the head 3 of the key 1, which rests on a seat 14.
  • the raised part 11 has a height that is smaller than the thickness (b) of the key head 3.
  • the raised part 11 has a bevel 12 which extends in the circumferential direction.
  • the tool 10, 12 is assigned a press ram 13 which is wider than the clear width (a) of the key head.
  • the material forming the head 3 of the key 1 is plastically deformed.
  • the plastically deformed material is displaced into the annular peripheral chamber formed by the chamfer 12, which is formed between the side walls 6 of the key and the chamfer 12 provided on the circumferential side.
  • an economical method e.g. B. a pressing process or a forging process for the production of the raw key body is used. Initially, there is no need to create the supporting surface or thickening.
  • the key blanks produced in this way are then subjected to suitable precision machining, e.g. B. subjected to a broaching process, thus creating a jaw opening (a) with high precision.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP93114959A 1992-09-24 1993-09-16 Procédé pour la fabrication d'une clé ouverte Expired - Lifetime EP0591732B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI922184A IT1255825B (it) 1992-09-24 1992-09-24 Procedimento per la realizzazione di una chiave ad anello aperto
ITMI922184 1992-09-24

Publications (2)

Publication Number Publication Date
EP0591732A1 true EP0591732A1 (fr) 1994-04-13
EP0591732B1 EP0591732B1 (fr) 1998-07-08

Family

ID=11363989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114959A Expired - Lifetime EP0591732B1 (fr) 1992-09-24 1993-09-16 Procédé pour la fabrication d'une clé ouverte

Country Status (4)

Country Link
EP (1) EP0591732B1 (fr)
DE (1) DE59308739D1 (fr)
ES (1) ES2117686T3 (fr)
IT (1) IT1255825B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2362594A (en) * 2000-05-22 2001-11-28 Hand Tool Design Corp Box spanner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104282505A (zh) * 2013-07-12 2015-01-14 上海工程技术大学 用于一体化螺钉螺母调节锁紧装置的外套筒结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715347A (en) * 1952-12-02 1955-08-16 Tubing Appliance Company Inc Webbed open-end box wrench
US2774259A (en) * 1955-07-11 1956-12-18 Frank T Caulkins Method of making box wrenches
US3121356A (en) * 1962-06-14 1964-02-18 Henderson G Davis Slip-proof wrench
FR2227093A1 (en) * 1973-04-27 1974-11-22 Wilmonda Manuf Outillage Double open headed spanner for pipe couplings - series of flats on one head is rotated 30 degrees w.r.t. those on second head
CA1257487A (fr) * 1986-05-13 1989-07-18 Edward Izatt Cle fermee

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715347A (en) * 1952-12-02 1955-08-16 Tubing Appliance Company Inc Webbed open-end box wrench
US2774259A (en) * 1955-07-11 1956-12-18 Frank T Caulkins Method of making box wrenches
US3121356A (en) * 1962-06-14 1964-02-18 Henderson G Davis Slip-proof wrench
FR2227093A1 (en) * 1973-04-27 1974-11-22 Wilmonda Manuf Outillage Double open headed spanner for pipe couplings - series of flats on one head is rotated 30 degrees w.r.t. those on second head
CA1257487A (fr) * 1986-05-13 1989-07-18 Edward Izatt Cle fermee

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2362594A (en) * 2000-05-22 2001-11-28 Hand Tool Design Corp Box spanner

Also Published As

Publication number Publication date
DE59308739D1 (de) 1998-08-13
ES2117686T3 (es) 1998-08-16
IT1255825B (it) 1995-11-17
ITMI922184A0 (it) 1992-09-24
ITMI922184A1 (it) 1994-03-24
EP0591732B1 (fr) 1998-07-08

Similar Documents

Publication Publication Date Title
EP0521354B1 (fr) Arbre à cames pour le contrôle des soupapes dans les moteurs à combustion interne
DE2225466C3 (de) Vorrichtung zur Herstellung eines aus Blech bestehenden Ketten- oder Zahnrades
DE3223004A1 (de) Lenkspindel fuer lenkvorrichtungen fuer kraftfahrzeuge sowie verfahren zur herstellung einer solchen lenkspindel
DE69106760T2 (de) Verfahren zum Herstellen eines Reibringes.
EP0759134A1 (fr) Systeme de fermeture pour obturer des conduites d'acheminement de substances sous pression dans un boitier
EP1108483B1 (fr) Procédé et dispositif pour le fluotournage
EP2479442A1 (fr) Elément de fonction sous la forme d'un élément de compression
DE19520099C2 (de) Rohrverbindung und Verfahren zu ihrer Herstellung
EP1252947B1 (fr) Procédé de fabrication d'un élément d'essieu pour un véhicule automobile
EP2224143A1 (fr) Ecrou, raccordement de vis, connexion de profilé, ainsi que procédé de fabrication d'un écrou
DE102010011711B4 (de) Verfahren und Vorrichtung zur spanlosen Herstellung von Verbindungs-, Befestigungs- oder Verschlusselementen aus Metall mit Außengewinde
EP0591732B1 (fr) Procédé pour la fabrication d'une clé ouverte
DE202009017864U1 (de) Stanz-Prägeniet
DE19650453B4 (de) Verfahren zur Herstellung einer Zusammenbau-Mutter sowie nach dem Verfahren hergestellte Zusammenbau-Mutter
DE4004008C1 (fr)
DE19855753A1 (de) Verfahren und Vorrichtung zum hydraulischen Umformen von Werkstücken
DE2638560C3 (de) Sicherungsmutter
EP1070896B1 (fr) Procédé de fabrication d'un élément d emmanchement par pressage
DE19941577A1 (de) Rohrverbindung und Verfahren zu ihrer Herstellung
EP0579005B1 (fr) Procédé, dispositif et matrice pour la fabrication d'une pièce ayant une section profilée
DE577930C (de) Herstellung von einseitig oder beiderseitig abgefasten Schraubenmuttern, Bolzenkoepfen o. dgl.
DE468110C (de) Herstellung von Aufdornstehbolzen
DE10138442C1 (de) Verfahren zur Herstellung eines metallischen Pressfittingelementes
EP0990769A1 (fr) Procédé de fabrication d'un cylindre comportant une extension longitudinale
EP3863780A1 (fr) Procédé et dispositifs pour matricer des structures superficielles dans une face intérieure d'un tube ou d'une tige de soupape d'une soupape-champignon et soupape champignon à structure intérieure matricée

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT NL

17P Request for examination filed

Effective date: 19940527

17Q First examination report despatched

Effective date: 19951019

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT NL

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980720

REF Corresponds to:

Ref document number: 59308739

Country of ref document: DE

Date of ref document: 19980813

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2117686

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990928

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19990930

Year of fee payment: 7

Ref country code: ES

Payment date: 19990930

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991004

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19991015

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000916

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010401

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000916

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010531

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20011011

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050916