WO2017060777A3 - Apparatus for tightening threaded fasteners - Google Patents

Apparatus for tightening threaded fasteners Download PDF

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Publication number
WO2017060777A3
WO2017060777A3 PCT/IB2016/001861 IB2016001861W WO2017060777A3 WO 2017060777 A3 WO2017060777 A3 WO 2017060777A3 IB 2016001861 W IB2016001861 W IB 2016001861W WO 2017060777 A3 WO2017060777 A3 WO 2017060777A3
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
torque
proportional valve
control circuit
tools
Prior art date
Application number
PCT/IB2016/001861
Other languages
French (fr)
Other versions
WO2017060777A2 (en
Inventor
Eric P. Junkers
Original Assignee
HYTORC Division Unex Corporation
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 HYTORC Division Unex Corporation filed Critical HYTORC Division Unex Corporation
Publication of WO2017060777A2 publication Critical patent/WO2017060777A2/en
Publication of WO2017060777A3 publication Critical patent/WO2017060777A3/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
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1456—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers having electrical components
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston

Landscapes

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

Abstract

An hydraulic drive unit (100), for torque controlled tightening of threaded fasteners (200) for use with hydraulic torque tools (300) having double-acting hydraulic cylinders which provides for the fully automatic generation of and complete documentation of a conforming bolting connection, includes: an electronic processing unit of a control circuit (40); a human-machine interface; a seat valve (V2) for alternatingly switching the working pressure to the respective side of the working cylinder of the tool (300); a proportional valve having a pressure sensor (13); wherein a desired final torque necessary to perform the desired bolting process is to be entered by an operator; and wherein the electronic processing unit of the control circuit (40) calculates the required pressure by using corresponding pressure- torque-conversion-charts of the tools (300) to apply the respective actuating value to the proportional valve having the pressure sensor (13) measuring an achieved system pressure and/or regulating the proportional valve.
PCT/IB2016/001861 2015-10-05 2016-10-05 Apparatus for tightening threaded fasteners WO2017060777A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201562237058P 2015-10-05 2015-10-05
US62/237,058 2015-10-05
US201663302260P 2016-03-02 2016-03-02
US63/302,260 2016-03-02

Publications (2)

Publication Number Publication Date
WO2017060777A2 WO2017060777A2 (en) 2017-04-13
WO2017060777A3 true WO2017060777A3 (en) 2017-08-03

Family

ID=57396798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/001861 WO2017060777A2 (en) 2015-10-05 2016-10-05 Apparatus for tightening threaded fasteners

Country Status (1)

Country Link
WO (1) WO2017060777A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11415119B2 (en) 2017-05-16 2022-08-16 Enerpac Tool Group Corp. Hydraulic pump
US10792795B2 (en) 2017-05-22 2020-10-06 Snap-On Incorporated Wireless torque wrench with torque specifications
US11543320B2 (en) 2017-05-22 2023-01-03 Snap-On Incorporated Wireless torque wrench with torque specifications
US11193508B2 (en) 2018-11-13 2021-12-07 Enerpac Tool Group Corp. Hydraulic power system and method for controlling same
GB2585700A (en) * 2019-07-12 2021-01-20 Hire Torque Ltd Hydraulic torque wrench and control system for a hydraulic torque wrench

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965778A (en) * 1974-09-19 1976-06-29 Standard Pressed Steel Co. Multi-stage tightening system
US4791838A (en) * 1986-05-30 1988-12-20 Raymond Engineering Inc. Apparatus and method for determining torque, presenting digital torque readout and automatic cycling and termination of wrench operation in a torque wrench system
DE102004059859B3 (en) * 2004-12-11 2006-08-10 Junkers, Holger, Dipl.-Ing.(FH) Motor-operated hydraulic pump for power screwdriver, has pressure measuring sensor interface detecting pressure values at screwdriver or at pump and transferring values to signal preprocessing unit for controlling pump and/or screwdriver
EP2233249A1 (en) * 2009-03-25 2010-09-29 HydroWer-Hydraulik Gmbh System for simultaneous tightening of multiple threaded joints in one processing step
WO2011150909A1 (en) * 2010-05-11 2011-12-08 Lösomat Schraubtechnik Neef Gmbh Circuit arrangement for operating a torque wrench or similar
WO2015121384A1 (en) * 2014-02-12 2015-08-20 Juko Technik Gmbh Multifunctional hydraulic assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965778A (en) * 1974-09-19 1976-06-29 Standard Pressed Steel Co. Multi-stage tightening system
US4791838A (en) * 1986-05-30 1988-12-20 Raymond Engineering Inc. Apparatus and method for determining torque, presenting digital torque readout and automatic cycling and termination of wrench operation in a torque wrench system
DE102004059859B3 (en) * 2004-12-11 2006-08-10 Junkers, Holger, Dipl.-Ing.(FH) Motor-operated hydraulic pump for power screwdriver, has pressure measuring sensor interface detecting pressure values at screwdriver or at pump and transferring values to signal preprocessing unit for controlling pump and/or screwdriver
EP2233249A1 (en) * 2009-03-25 2010-09-29 HydroWer-Hydraulik Gmbh System for simultaneous tightening of multiple threaded joints in one processing step
WO2011150909A1 (en) * 2010-05-11 2011-12-08 Lösomat Schraubtechnik Neef Gmbh Circuit arrangement for operating a torque wrench or similar
WO2015121384A1 (en) * 2014-02-12 2015-08-20 Juko Technik Gmbh Multifunctional hydraulic assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATRICK JUNKERS: "HY7", 31 December 2006 (2006-12-31), XP055342962, Retrieved from the Internet <URL:http://www.hytorc.de/fileadmin/downloads/Broschueren/HY-Magazin_7.pdf> [retrieved on 20170207] *

Also Published As

Publication number Publication date
WO2017060777A2 (en) 2017-04-13

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