EP3501739A1 - Procédé d'étalonnage et de commande d'un dispositif de vissage et dispositif destiné à la mise en uvre dudit procédé - Google Patents

Procédé d'étalonnage et de commande d'un dispositif de vissage et dispositif destiné à la mise en uvre dudit procédé Download PDF

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Publication number
EP3501739A1
EP3501739A1 EP17209544.0A EP17209544A EP3501739A1 EP 3501739 A1 EP3501739 A1 EP 3501739A1 EP 17209544 A EP17209544 A EP 17209544A EP 3501739 A1 EP3501739 A1 EP 3501739A1
Authority
EP
European Patent Office
Prior art keywords
pump
hydraulic
working
hydraulic oil
stroke chamber
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Withdrawn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
EP17209544.0A
Other languages
German (de)
English (en)
Inventor
Alexander Kipfelsberger
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.)
ALKI TECHNIK GMBH SCHRAUBSYSTEME ENTWICKLUNG-PRODU
Original Assignee
Aliki Technik Schraubsysteme Entwicklung- Produktion-Vertrieb GmbH
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 Aliki Technik Schraubsysteme Entwicklung- Produktion-Vertrieb GmbH filed Critical Aliki Technik Schraubsysteme Entwicklung- Produktion-Vertrieb GmbH
Priority to EP17209544.0A priority Critical patent/EP3501739A1/fr
Publication of EP3501739A1 publication Critical patent/EP3501739A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor

Definitions

  • the invention relates to a method for calibrating and controlling a screwing device according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 11.
  • the hydraulic ratchet wrench is driven by a double-action hydraulic cylinder-piston drive, wherein this has a piston displaceably guided in the hydraulic cylinder, with a ratchet operated piston rod led out of the hydraulic cylinder.
  • the hydraulic cylinder has a power stroke chamber as a high pressure chamber on a piston side and a return stroke chamber as a low pressure chamber on the piston side with the piston rod.
  • the hydraulic pump is connected to the working stroke chamber with a working-stroke chamber hydraulic oil passage and to the return stroke chamber with a return-stroke hydraulic oil passage.
  • the hydraulic pump is controllable by means of a pump control unit.
  • the hydraulic ratchet wrench has been pre-calibrated to obtain screw calibration data that assigns tightening torques for a tightening operation to different working pressures in the working stroke chamber.
  • a pre-calibration can be carried out, for example, with a precisely predetermined pump pressure in the working stroke chamber so that an associated tightening torque is measured and noted on a torque measuring device.
  • the assignment between different working pressures and torques can then be recorded in tabular form or diagram form, whereby working pressures between 100 and 1200 N m are recorded, for example in a range from 100 to 700 bar.
  • a corresponding document has hitherto been attached to each hydraulic ratchet wrench as a calibration data sheet and is thus part of a calibration of the entire screwing device from the hydraulic pump and the hydraulic ratchet wrench.
  • a screwing is thus previously performed so that a tightening torque is specified for a current screwing.
  • the worker takes the working pressure associated with this tightening torque from the calibration data sheet and adjusts it to the hydraulic pump and / or monitors the pressure after the start of the tightening process.
  • the object of the invention is therefore to propose a method for calibrating and controlling a screwing device with a hydraulic pump and a hydraulic ratchet wrench and a device for carrying out the method, wherein a screwing process is generally easier and safer to carry out.
  • At least one transponder is fixedly mounted on the hydraulic ratchet wrench, into which the screwdriver calibration data are permanently and readably stored.
  • the screwdriver calibration data are read out of the transponder and transferred to the pump control unit, whereby for a concrete, current screwing with a certain, predetermined tightening torque from the screwdriver calibration data of required working pressure assigned and adjusted at the pump control unit of the hydraulic pump before or to start the screwing.
  • the pump control unit has an input unit to which screwing values, in particular as tightening torques and optionally additionally subsequent rotation angles for a current screwing operation, are entered directly.
  • screwing values in particular as tightening torques and optionally additionally subsequent rotation angles for a current screwing operation
  • the associated working pressures are then calculated on the basis of the stored screwdriver calibration data and specified inside the pump as working pressure setpoint values at the pump control unit.
  • the pump control unit may have a detection module with the achievement of the entered Verschraubungsune and thus the end of a correctly performed screwing is determined and then the pump function is turned off.
  • At least one transponder is fixedly mounted at the location of a screw connection, in particular on a component to be screwed, into which the screw connection values relevant for this screw connection are permanently and readably stored.
  • These bolting values are read out before the screwdriving process with the reader and transferred directly to the pump control unit for controlling the screwing operation. This is a particularly simple and safe, fully automatically controlled screwing feasible.
  • the pump control unit can have a module for an online connection directly or indirectly via an app and optionally a smartphone to the cloud, whereby all relevant data of a correctly executed screwing operation are stored in the cloud.
  • screw connections can be checked for their correctness, in particular by a manager or project manager.
  • transponders can also be fixedly mounted on the working-displacement chamber hydraulic oil line and / or the return-stroke hydraulic oil line, wherein line-specific data, in particular line lengths, nominal widths and service lives, are permanently and readably stored, these data being read out and can be taken into account in the calculation of the pump control data and / or possibly warnings can be made.
  • calibration data on the transponder attached to the hydraulic ratchet wrench to the nutrunner can additionally include the date of the last calibration and / or the date of the next required calibration and / or a current calibration certificate and / or a model name and / or a serial number and / or a year of manufacture and / or the cylinder volumes of the working stroke chamber and the return stroke chamber are stored readable. All of this data can be suitably processed in the controller and / or processed for reminders and / or alarms.
  • the data transmission between a reader for reading the transponder and the pump control unit can be done in a conventional manner by means of cables and / or wirelessly via radio and / or optionally manually.
  • the reading device can also be integrated directly into the pump control unit. Since the hydraulic lines between the hydraulic pump and the hydraulic ratchet screwdriver are functionally relatively short, the distance between the hydraulic pump and the hydraulic ratchet driver is correspondingly relatively small. This also results in a relatively short radio distance between the transponder or transponders and a reading device integrated into the pump control unit, so that even with this arrangement a safe transponder reading can take place.
  • transponders are used as RFID transponders without their own energy source, which are available in different, functionally reliable forms on the market.
  • other similar transponders can also be used, for example, as NTFS transponders or optically readable QR code tags.
  • the above methods can be performed with a hydraulic pump with the features of claim 10 which has a combination of gear pump and piston pump.
  • the gear pump pumps a relatively large flow of hydraulic oil per Motor revolution of a drive motor and the piston pump in contrast, a relatively small flow rate.
  • the pumping function of the gear pump is used both for a quick return stroke of the piston rod and for a quick turn on the screw is a resistor, then by reversing the pumping function, the piston pump for a high predetermined tightening pressure corresponding to the set tightening torque is switched.
  • a screwing device 1 is shown with a hydraulic pump 3 and with a hydraulic ratchet wrench 12.
  • the hydraulic ratchet wrench 12 is already in preparation for a screwing its screw head 53 plugged onto a nut 54 a screw.
  • the hydraulic pump 3 has an oil tank 2, on which a pump control unit 4 is placed with downwardly subsequent pump motor with a vertical motor output shaft.
  • a gear pump 20 and a radial piston pump 21 are arranged, which are driven by the engine output shaft.
  • a high-pressure gauge 6 is connected on a housing with hydraulic control elements.
  • a working-stroke chamber hydraulic oil passage 7 and a return-stroke hydraulic oil passage 8 are connected as connecting lines to the hydraulic ratchet driver 12.
  • a fuel gauge 10 and a tank vent 11 are shown.
  • transponder 50 On the hydraulic ratchet wrench 12, a transponder 50 is fixedly mounted, as well as a respective transponder 51 a and 51 b is attached to the Häshubhunt hydraulic oil line 7 and the remindhubwait hydraulic oil line 8.
  • a transponder 52 is fixedly mounted at the place of screwing.
  • transponders 50, 51 a, 51 b and 52 are bolting relevant data stored. These data are read to calibrate the entire screwing device 1 and to control screwing operations.
  • the triggering operation can take place by means of a manually operated reading device 22a (indicated by dashed lines), which is brought into the vicinity of the transponders 50, 51a, 51b and 52.
  • the data read out (double arrow 55) are transmitted by means of cable 56 or by radio (double arrow 57) to the pump control unit 4 for further processing.
  • a reading device 22b can also be integrated directly into the pump control unit 4 so that a data exchange (double arrow 58) can take place directly between the transponders 50, 51a, 51b and 52 and the pump control unit 4.
  • a data exchange (double arrow 58) can take place directly between the transponders 50, 51a, 51b and 52 and the pump control unit 4.
  • a direct input to an input unit 5b via radio is possible.
  • an input via a manual input unit 5a is possible.
  • Stored and / or current operational data may optionally be displayed via a display 59.
  • screwing data can be stored by radio in a cloud (double arrow 61).
  • the screwdriving values relevant for the screw connection are read from the transponder 52 at the screwing location.
  • the transponder 50 on the hydraulic ratchet wrench 12 in particular the calibration data stored there for the assignment of pressure and tightening torque are read out.
  • the transponders 51 a, 51 b are read on the lines 7 and 8 line-relevant data. All these data are transmitted to the pump control unit 4 and there billed in the execution of the screwing and taken into account.
  • a screw 1 In a hydraulic cylinder 13, a piston is slidably received as a disk piston 14, wherein a piston rod 15 or optionally an extension engages in an only schematically indicated ringrath 16 for their actuation.
  • a working stroke chamber 17 On the left side of the piston, a working stroke chamber 17 is formed in the hydraulic cylinder 13 and a return stroke chamber 18 is formed on the right side of the piston, in which also the piston rod 15 is slidably guided.
  • the hydraulic cylinder 13 with the associated parts and the screw ratchet 16 form the hydraulic ratchet wrench 12, which is connected via flexible hydraulic lines 7, 8 with the hydraulic pump 3.
  • the gear pump 20 and the radial piston pump 21 are received, which are driven jointly by the output shaft of the pump motor.
  • the pump motor is via the pump control unit. 4 operated, to the example, a reader 22a and a working pressure line 24 are connected.
  • the hydraulic control is framed by the frame 25 from which the high pressure gauge 6 protrudes.
  • a first gear pump port 26 is connected to the working stroke chamber 17 via the working-stroke chamber hydraulic oil passage 7 in the end portion thereof.
  • a second gear pump port 27 is connected to the return stroke chamber hydraulic oil passage 8 to an end portion of the return stroke chamber 18.
  • the working-stroke chamber hydraulic oil pipe 7 is connected to the hydraulic oil volume of the oil tank 2 at a first intake port 28 via a first intake port 29 to a first intake check valve 30.
  • the return stroke hydraulic oil passage 8 is connected to the hydraulic oil volume of the oil tank 2 at a second intake port 31 via a second intake port 32 via a second intake check valve 33.
  • a high-pressure check valve 34 with a blocking action in the direction of the first intake connection point 28 in the working-displacement chamber hydraulic oil line 7 is arranged.
  • the radial piston pump 21 has a piston pump suction inlet 35, which is connected to a piston pump suction line 36 with the hydraulic oil volume of the oil tank 2. From a piston pump delivery outlet 37, a piston pump delivery line 38 leads to a connection with the working-stroke chamber hydraulic oil line 7 between the high-pressure check valve 34 and the working stroke chamber 17. In addition, a hydraulic oil return line 39 leads into the oil tank 2. This hydraulic oil return line 39 is connected to the working-stroke chamber hydraulic oil passage 7 between the high-pressure check valve 34 and the first intake port 28 via a low-pressure relief valve 40.
  • the hydraulic return line 39 is connected via a pressure-pilotable unlocking check valve 41 to the working-stroke chamber hydraulic oil line 7 between the high-pressure check valve 34 and the working stroke chamber 17.
  • the unlocking check valve 41 has a blocking effect in the return flow direction and opens in response to a pressure in the return stroke chamber hydraulic oil line 8, for which purpose a corresponding pressure control line 42 is led from there to the unlocking check valve 41.
  • a high-pressure relief safety valve 43 is connected between the working-stroke chamber hydraulic oil pipe 7 and the hydraulic oil return pipe 39. Accordingly, a low-pressure relief safety valve 44 is connected between the return stroke hydraulic oil passage 8 and the hydraulic oil return passage 39.
EP17209544.0A 2017-12-21 2017-12-21 Procédé d'étalonnage et de commande d'un dispositif de vissage et dispositif destiné à la mise en uvre dudit procédé Withdrawn EP3501739A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17209544.0A EP3501739A1 (fr) 2017-12-21 2017-12-21 Procédé d'étalonnage et de commande d'un dispositif de vissage et dispositif destiné à la mise en uvre dudit procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17209544.0A EP3501739A1 (fr) 2017-12-21 2017-12-21 Procédé d'étalonnage et de commande d'un dispositif de vissage et dispositif destiné à la mise en uvre dudit procédé

Publications (1)

Publication Number Publication Date
EP3501739A1 true EP3501739A1 (fr) 2019-06-26

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EP17209544.0A Withdrawn EP3501739A1 (fr) 2017-12-21 2017-12-21 Procédé d'étalonnage et de commande d'un dispositif de vissage et dispositif destiné à la mise en uvre dudit procédé

Country Status (1)

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EP (1) EP3501739A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114687261A (zh) * 2020-12-25 2022-07-01 常州市瑞泰工程机械有限公司 液压旋拧设备、其控制方法以及轨道工作装置
EP3653888B1 (fr) 2018-11-13 2023-01-25 Enerpac Tool Group Corp. Système d'alimentation hydraulique et son procédé de commande
CN117102407A (zh) * 2023-10-25 2023-11-24 江苏莱赫润轧辊科技有限公司 一种冷硬铸铁活塞杆的加工装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1400313B1 (fr) 2002-09-19 2005-07-27 Alexander Kipfelsberger Clé à cliquet hydraulique avec entraínement hydraulique à piston-cylindre à double effet
EP2147750A1 (fr) * 2008-07-24 2010-01-27 Alexander Kipfelsberger Dispositif équipé d'un tournevis doté d'une limitation de couple électronique et procédé de fonctionnement du dispositif
DE102010019792A1 (de) * 2010-05-06 2011-11-10 Lösomat Schraubtechnik Neef Gmbh Vorrichtung zur Erzeugung eines drehmomentgenauen Anzugsmoments für Schraubverbindungen und Verfahren zur Kalibrierung einer solchen Vorrichtung
WO2012067602A1 (fr) * 2010-11-15 2012-05-24 HYTORC Division Unex Corporation Unité d'entraînement d'un outil à moteur
US20150286209A1 (en) * 2014-04-02 2015-10-08 Ridge Tool Company Electronic tool lock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1400313B1 (fr) 2002-09-19 2005-07-27 Alexander Kipfelsberger Clé à cliquet hydraulique avec entraínement hydraulique à piston-cylindre à double effet
EP2147750A1 (fr) * 2008-07-24 2010-01-27 Alexander Kipfelsberger Dispositif équipé d'un tournevis doté d'une limitation de couple électronique et procédé de fonctionnement du dispositif
DE102010019792A1 (de) * 2010-05-06 2011-11-10 Lösomat Schraubtechnik Neef Gmbh Vorrichtung zur Erzeugung eines drehmomentgenauen Anzugsmoments für Schraubverbindungen und Verfahren zur Kalibrierung einer solchen Vorrichtung
WO2012067602A1 (fr) * 2010-11-15 2012-05-24 HYTORC Division Unex Corporation Unité d'entraînement d'un outil à moteur
US20150286209A1 (en) * 2014-04-02 2015-10-08 Ridge Tool Company Electronic tool lock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3653888B1 (fr) 2018-11-13 2023-01-25 Enerpac Tool Group Corp. Système d'alimentation hydraulique et son procédé de commande
CN114687261A (zh) * 2020-12-25 2022-07-01 常州市瑞泰工程机械有限公司 液压旋拧设备、其控制方法以及轨道工作装置
CN117102407A (zh) * 2023-10-25 2023-11-24 江苏莱赫润轧辊科技有限公司 一种冷硬铸铁活塞杆的加工装置
CN117102407B (zh) * 2023-10-25 2024-01-02 江苏莱赫润轧辊科技有限公司 一种冷硬铸铁活塞杆的加工装置

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