EP0096620B1 - Procédé de serrage d'un assemblage comportant un élément d'assemblage fileté - Google Patents

Procédé de serrage d'un assemblage comportant un élément d'assemblage fileté Download PDF

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Publication number
EP0096620B1
EP0096620B1 EP83401058A EP83401058A EP0096620B1 EP 0096620 B1 EP0096620 B1 EP 0096620B1 EP 83401058 A EP83401058 A EP 83401058A EP 83401058 A EP83401058 A EP 83401058A EP 0096620 B1 EP0096620 B1 EP 0096620B1
Authority
EP
European Patent Office
Prior art keywords
assembly
screwing
torque
applying
cycle
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
Application number
EP83401058A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0096620A1 (fr
Inventor
Christian Père
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.)
Renault SA
Original Assignee
Regie Nationale des Usines Renault
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 Regie Nationale des Usines Renault filed Critical Regie Nationale des Usines Renault
Publication of EP0096620A1 publication Critical patent/EP0096620A1/fr
Application granted granted Critical
Publication of EP0096620B1 publication Critical patent/EP0096620B1/fr
Expired legal-status Critical Current

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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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y10T29/49948—Multipart cooperating fastener [e.g., bolt and nut]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53687—Means to assemble or disassemble by rotation of work part

Definitions

  • the present invention relates to a method of tightening an assembly comprising a threaded assembly element to apply to this assembly a predetermined clamping force.
  • the object of the invention is to propose a tightening method which overcomes the drawbacks of the methods known from the prior art.
  • the coefficient K is given by the formula in which p is the thread pitch.
  • the method according to the invention has the main advantage of identifying for each assembly carried out the real coefficient of proportionality relating the tightening force to the tightening torque.
  • the method according to the invention has the advantage of being able to be easily substituted for the method using the torque screwing method, without modification of the assembly or additional study of the latter. Such a substitution is not possible, neither in the case of screwing at the elastic limit which requires precise sizing of the screw, nor in the case of angle screwing which requires a preliminary study and numerous tests and expensive.
  • FIG. 1 represents an assembly to which the invention is capable of being applied.
  • FIG. 1 shows a conventional assembly comprising two flat parts 12 and 14 which it is desired to assemble by means of a threaded assembly element.
  • the threaded element 14 is constituted by a bolt 16 comprising a head 18, a threaded rod 20 and a nut 22.
  • the threaded rod 20 is received in two bores 13 and 15 formed in the parts 12 and 14
  • a first washer 24 is also provided, disposed between the lower face 19 of the bolt head 18 and the upper face opposite the part 12, and a second washer 26 disposed between the upper face 21 of the nut 22 and the underside facing part 14.
  • the principle of the method which is the subject of the present invention is to identify the real coefficient of proportionality K for each assembly by virtue of the existence of said hysteresis.
  • the real coefficient of proportionality K is calculated using the following formula:
  • the gradient Gv is given by the formula: in which O is the angular displacement of the screw element.
  • the final value of the tightening torque, during the preliminary tightening cycle is equal to approximately 80% of the approximate value of Cf that the we can calculate when designing the assembly.
  • steps a) to e) are repeated at least twice, it is desirable to apply for the first time a final value of the tightening torque corresponding to the approximate value of Cf which can be calculated during of the design of the assembly taking for ⁇ the estimated minimum value of this coefficient.
  • a tightening torque the final value of which at the end of step a) corresponds to approximately 80% of the value Cf which could have been calculated at the end of steps a ) to e) of the first cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
EP83401058A 1982-05-26 1983-05-26 Procédé de serrage d'un assemblage comportant un élément d'assemblage fileté Expired EP0096620B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8209108 1982-05-26
FR8209108A FR2527714A1 (fr) 1982-05-26 1982-05-26 Procede de serrage d'un assemblage comportant un element d'assemblage filete

Publications (2)

Publication Number Publication Date
EP0096620A1 EP0096620A1 (fr) 1983-12-21
EP0096620B1 true EP0096620B1 (fr) 1986-12-10

Family

ID=9274331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401058A Expired EP0096620B1 (fr) 1982-05-26 1983-05-26 Procédé de serrage d'un assemblage comportant un élément d'assemblage fileté

Country Status (6)

Country Link
US (1) US4488437A (enrdf_load_stackoverflow)
EP (1) EP0096620B1 (enrdf_load_stackoverflow)
JP (1) JPS58217278A (enrdf_load_stackoverflow)
DE (1) DE3368221D1 (enrdf_load_stackoverflow)
ES (1) ES8403202A1 (enrdf_load_stackoverflow)
FR (1) FR2527714A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024577C2 (de) * 1990-08-02 1999-08-26 Bosch Gmbh Robert Verfahren zur Steuerung einer Vorspannkraft in einer Schraubverbindung

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105519A (en) * 1985-06-19 1992-04-21 Daiichi Dentsu Kabushiki Kaisha Tension control method for nutrunner
FR2677571B1 (fr) * 1991-06-14 1995-08-04 Ciandar Procede pour le controle et l'asservissement de la tension d'un organe filete.
US5682678A (en) * 1995-11-13 1997-11-04 The Nordam Group, Inc. Mechanical repair for a honeycomb panel
EP0914910A1 (en) * 1997-10-30 1999-05-12 Yukitaka Murakami Wrenching method and apparatus wrenching attachment, and medium storing wrenching torque control program
DE19804459C1 (de) * 1998-02-05 1999-07-15 Daimler Chrysler Ag Schraubverfahren zur Erkennung von Setzerscheinungen
FR2780785B1 (fr) 1998-07-03 2000-10-13 Sam Outillage Procede et dispositif de mesure et de serrage d'un assemblage par organe filete
BRPI0402362A (pt) * 2004-06-18 2006-01-31 Metalac Sps Ind E Com Ltda Sistema e método para execução automatizada de junções aparafusadas
BRPI0504490A (pt) * 2005-09-05 2007-06-12 Rubens Cioto método aplicado em aparafusadeiras automáticas ou manuais com capacidade de monitorar, em tempo real, o torque e o ángulo de deslocamento em associação aos ángulos de torção, durante a operação inicial de pré-aperto, desaperto e reaperto na zona elástica de fixadores roscados, visando obter parámetros que possibilitem apertar cada fixador roscado com sua força tensora pré-determinada, através de controle de torque na zona elástica ou de ángulo na zona plástica ou elástica
JP5877468B2 (ja) * 2012-09-13 2016-03-08 ヨコタ工業株式会社 衝撃締付工具
EP3119558B1 (en) * 2014-03-18 2018-05-09 Atlas Copco Industrial Technique AB Method for a threaded joint mounting process
EP4108383A1 (en) * 2021-06-22 2022-12-28 Siemens Gamesa Renewable Energy A/S Method and apparatus for computer-implemented supervising a tightening process of a bolt using a tightening system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016938A (en) * 1975-12-02 1977-04-12 Ingersoll-Rand Company Method for fastener tensioning
US4142266A (en) * 1976-06-07 1979-03-06 Dahl Norman C Method for creating overload protection against yielding in bolts
SE423344B (sv) * 1976-11-22 1982-05-03 Atlas Copco Ab Forfarande och anordning for reglerad atdragning av skruvforband
US4244245A (en) * 1979-05-16 1981-01-13 Chicago Pneumatic Tool Company Fastener tension control system
US4375121A (en) * 1980-04-07 1983-03-01 Sps Technologies Dynamic friction indicator and tightening system usable therewith
US4375123A (en) * 1980-04-07 1983-03-01 Sps Technologies, Inc. Method and apparatus for tightening threaded fastener assemblies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024577C2 (de) * 1990-08-02 1999-08-26 Bosch Gmbh Robert Verfahren zur Steuerung einer Vorspannkraft in einer Schraubverbindung

Also Published As

Publication number Publication date
ES522705A0 (es) 1984-03-01
FR2527714B1 (enrdf_load_stackoverflow) 1985-04-12
JPS58217278A (ja) 1983-12-17
ES8403202A1 (es) 1984-03-01
EP0096620A1 (fr) 1983-12-21
FR2527714A1 (fr) 1983-12-02
US4488437A (en) 1984-12-18
DE3368221D1 (en) 1987-01-22

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