EP0291215A3 - Gasket joint tightening - Google Patents

Gasket joint tightening Download PDF

Info

Publication number
EP0291215A3
EP0291215A3 EP88303962A EP88303962A EP0291215A3 EP 0291215 A3 EP0291215 A3 EP 0291215A3 EP 88303962 A EP88303962 A EP 88303962A EP 88303962 A EP88303962 A EP 88303962A EP 0291215 A3 EP0291215 A3 EP 0291215A3
Authority
EP
European Patent Office
Prior art keywords
drive system
retorque
fastener
control limit
torque control
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Withdrawn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
EP88303962A
Other languages
German (de)
French (fr)
Other versions
EP0291215A2 (en
Inventor
Heinz Gaenssle
Edwin E. Rice
Kenneth D. Abramson
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of EP0291215A2 publication Critical patent/EP0291215A2/en
Publication of EP0291215A3 publication Critical patent/EP0291215A3/en
Withdrawn legal-status Critical Current

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
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers

Landscapes

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

Abstract

An electric drive system applies rotational force to and threadably advances a fastener in a fastener and gasket assembly. A micro processor unit continuously compares the applied torque to a torque control limit value. When the torque control limit is reached the drive system power is reduced. After a preselected time pause the drive system applies at least one retorque pulse. When a predetermined quantity of retorque pulses have been applied, the tensioning operation is terminated.
EP88303962A 1987-05-11 1988-04-29 Gasket joint tightening Withdrawn EP0291215A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4844287A 1987-05-11 1987-05-11
US48442 1987-05-11

Publications (2)

Publication Number Publication Date
EP0291215A2 EP0291215A2 (en) 1988-11-17
EP0291215A3 true EP0291215A3 (en) 1990-01-10

Family

ID=21954605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88303962A Withdrawn EP0291215A3 (en) 1987-05-11 1988-04-29 Gasket joint tightening

Country Status (2)

Country Link
EP (1) EP0291215A3 (en)
JP (1) JPS6420978A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6424799B1 (en) 1993-07-06 2002-07-23 Black & Decker Inc. Electrical power tool having a motor control circuit for providing control over the torque output of the power tool
US5440215A (en) * 1993-07-06 1995-08-08 Black & Decker Inc. Electrical power tool having a motor control circuit for increasing the effective torque output of the power tool
US6479958B1 (en) 1995-01-06 2002-11-12 Black & Decker Inc. Anti-kickback and breakthrough torque control for power tool
SE515974C2 (en) * 1998-12-29 2001-11-05 Atlas Copco Tools Ab Method of biasing a joint containing two or more threaded fasteners
SE542127C2 (en) 2018-04-18 2020-02-25 Atlas Copco Ind Technique Ab Hand held electric pulse tool and a method for tightening operations
JP2020006448A (en) * 2018-07-03 2020-01-16 トヨタ自動車株式会社 Inspection system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010044A1 (en) * 1980-03-15 1981-09-24 Bayerische Motoren Werke AG, 8000 München Mechanical IC engine cylinder head bolt tightening - involves tightening up to elastic limit with subsequent loosening through controlled rotation angle
DE3212038A1 (en) * 1981-03-31 1982-11-11 International Harvester Co., 60611 Chicago, Ill. METHOD AND DEVICE FOR AUTOMATICALLY TIGHTENING THREADED FASTENERS
DE3230642A1 (en) * 1982-08-18 1984-02-23 Volkswagenwerk Ag, 3180 Wolfsburg Method and device for tightening a threaded connecting element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010044A1 (en) * 1980-03-15 1981-09-24 Bayerische Motoren Werke AG, 8000 München Mechanical IC engine cylinder head bolt tightening - involves tightening up to elastic limit with subsequent loosening through controlled rotation angle
DE3212038A1 (en) * 1981-03-31 1982-11-11 International Harvester Co., 60611 Chicago, Ill. METHOD AND DEVICE FOR AUTOMATICALLY TIGHTENING THREADED FASTENERS
DE3230642A1 (en) * 1982-08-18 1984-02-23 Volkswagenwerk Ag, 3180 Wolfsburg Method and device for tightening a threaded connecting element

Also Published As

Publication number Publication date
EP0291215A2 (en) 1988-11-17
JPS6420978A (en) 1989-01-24

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