SE9804588L - Method of biasing a joint containing two or more threaded fasteners - Google Patents

Method of biasing a joint containing two or more threaded fasteners

Info

Publication number
SE9804588L
SE9804588L SE9804588A SE9804588A SE9804588L SE 9804588 L SE9804588 L SE 9804588L SE 9804588 A SE9804588 A SE 9804588A SE 9804588 A SE9804588 A SE 9804588A SE 9804588 L SE9804588 L SE 9804588L
Authority
SE
Sweden
Prior art keywords
joint
fasteners
axial load
load level
torque
Prior art date
Application number
SE9804588A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9804588D0 (en
SE515974C2 (en
Inventor
Tobias Axel Andersson
Original Assignee
Atlas Copco Tools Ab
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 Atlas Copco Tools Ab filed Critical Atlas Copco Tools Ab
Priority to SE9804588A priority Critical patent/SE515974C2/en
Publication of SE9804588D0 publication Critical patent/SE9804588D0/en
Priority to JP2000590817A priority patent/JP2002533225A/en
Priority to PCT/SE1999/002487 priority patent/WO2000038879A1/en
Priority to EP99965696A priority patent/EP1146993A1/en
Publication of SE9804588L publication Critical patent/SE9804588L/en
Publication of SE515974C2 publication Critical patent/SE515974C2/en

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/065—Arrangements for torque limiters or torque indicators in screw or nut setting machines
    • B23P19/066—Arrangements for torque limiters or torque indicators in screw or nut setting machines by electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/069—Multi-spindle machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

A method for pretensioning a joint to a predetermined clamping load level, which joint is apt to settlement during pretensioning and comprises two or more threaded fasteners (15 a-d) to be tightened by a simultaneous engagement of individually rotated and controlled torque delivering tools (19 a-d), comprising the steps of: I) applying simultaneously a tightening torque on each one of the fasteners (15 a-d), II) measuring during the torque application the instantaneous axial load (F) in each one of the fasteners (15 a-d), III) interrupting the torque application on each one of the fasteners as the axial load (F) on the respective fastener (15 a-d) has reached a predetermined axial load (FT) which corresponds to the intended clamping load level in the joint (10), IV) reapplying a tightening torque one or more times on that fastener or those fasteners (15 a-d) on which the axial load (F) has decreased due to settlement of the joint (10) during one or more relaxation time intervals so as to regain the predetermined axial load level (FT), and V) terminating the pretensioning process of the joint (10) as the axial load (F) has remained substantially unchanged at the predetermined axial load level (FT) for a final time interval in all of the fasteners (15 a-d), thereby providing the intended clamping load level in the joint (10).
SE9804588A 1998-12-29 1998-12-29 Method of biasing a joint containing two or more threaded fasteners SE515974C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9804588A SE515974C2 (en) 1998-12-29 1998-12-29 Method of biasing a joint containing two or more threaded fasteners
JP2000590817A JP2002533225A (en) 1998-12-29 1999-12-28 Tightening method for a coupling with two or more screw-type fasteners
PCT/SE1999/002487 WO2000038879A1 (en) 1998-12-29 1999-12-28 Method for pretensioning a joint containing two or more threaded fasteners
EP99965696A EP1146993A1 (en) 1998-12-29 1999-12-28 Method for pretensioning a joint containing two or more threaded fasteners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9804588A SE515974C2 (en) 1998-12-29 1998-12-29 Method of biasing a joint containing two or more threaded fasteners

Publications (3)

Publication Number Publication Date
SE9804588D0 SE9804588D0 (en) 1998-12-29
SE9804588L true SE9804588L (en) 2000-06-30
SE515974C2 SE515974C2 (en) 2001-11-05

Family

ID=20413899

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9804588A SE515974C2 (en) 1998-12-29 1998-12-29 Method of biasing a joint containing two or more threaded fasteners

Country Status (4)

Country Link
EP (1) EP1146993A1 (en)
JP (1) JP2002533225A (en)
SE (1) SE515974C2 (en)
WO (1) WO2000038879A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5163270B2 (en) * 2008-05-13 2013-03-13 マツダ株式会社 Bolt fastening method and apparatus
CN102950460B (en) * 2012-12-06 2014-08-27 陈世江 Synchronous combination process torque device
CN108044342A (en) * 2017-12-25 2018-05-18 上海中船三井造船柴油机有限公司 For the tight device and method of pump of diesel engine cylinder lid for ship stud
CN111805218A (en) * 2020-07-23 2020-10-23 东阳市俊华电器销售有限公司 Full-automatic hardware assembly machine
CN111993347B (en) * 2020-08-21 2022-04-22 浪潮电子信息产业股份有限公司 Dismounting jig suitable for multi-fastener synchronous operation
CN114346631B (en) * 2022-01-06 2023-05-09 西安神西电气有限责任公司 Device for batch loading of base nuts of relay

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796789A (en) * 1952-10-20 1957-06-25 Adele M Stevens Multiple torque transmitting apparatus for tightening threaded fastening elements
US4273198A (en) * 1979-07-09 1981-06-16 Daiichi Dentsu Kabushiki Kaisha Motor-driven clamping method and device
EP0291215A3 (en) * 1987-05-11 1990-01-10 Ingersoll-Rand Company Gasket joint tightening
US4846001A (en) * 1987-09-11 1989-07-11 Sps Technologies, Inc. Ultrasonic load indicating member
US4969105A (en) * 1988-05-02 1990-11-06 Ingersoll-Rand Company Gasket compression control method having tension-related feedback
US4995145A (en) * 1990-01-08 1991-02-26 Allen-Bradley Company, Inc. Reduction of relaxation induced tension scatter in fasteners
JP2936506B2 (en) * 1995-07-11 1999-08-23 クワンタイシステムス株式会社 Optimal time bolt tightening method
JP4009760B2 (en) * 1995-11-24 2007-11-21 忠弘 大見 Screw member tightening method

Also Published As

Publication number Publication date
WO2000038879A1 (en) 2000-07-06
SE9804588D0 (en) 1998-12-29
JP2002533225A (en) 2002-10-08
EP1146993A1 (en) 2001-10-24
SE515974C2 (en) 2001-11-05

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Legal Events

Date Code Title Description
NUG Patent has lapsed