EP1579957A2 - Tournevis à air comprimé - Google Patents

Tournevis à air comprimé Download PDF

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Publication number
EP1579957A2
EP1579957A2 EP05002097A EP05002097A EP1579957A2 EP 1579957 A2 EP1579957 A2 EP 1579957A2 EP 05002097 A EP05002097 A EP 05002097A EP 05002097 A EP05002097 A EP 05002097A EP 1579957 A2 EP1579957 A2 EP 1579957A2
Authority
EP
European Patent Office
Prior art keywords
screwdriver
control line
pneumatic
compressed air
valve
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Withdrawn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
EP05002097A
Other languages
German (de)
English (en)
Other versions
EP1579957A3 (fr
Inventor
Rolf Dr. Pfeiffer
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.)
Deprag Schulz GmbH u Co
Original Assignee
Deprag Schulz GmbH u 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 Deprag Schulz GmbH u Co filed Critical Deprag Schulz GmbH u Co
Publication of EP1579957A2 publication Critical patent/EP1579957A2/fr
Publication of EP1579957A3 publication Critical patent/EP1579957A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the invention relates to a pneumatic wrench device with a pneumatically operated Hand screwdriver, a compressed air motor, a compressed air connection and a control line.
  • a monitored pneumatic screwdriver in which an arranged in the compressed air supply external valve for the compressed air supply is switched by a control device.
  • the control device is at the same time via a line with a sensor integrated in the pneumatic screwdriver connected, which detects the operation of a switch lever.
  • the control device it is monitored whether a proper screwing is done. Detected the control device a Fehlverschraubung, so is via a display device an optical or audible signal is emitted to the operator to draw attention to the malfunction.
  • the individual components control device, external valve, external indicator and pneumatic screwdriver are located in close proximity to the workplace so that the operator Has access to the individual components.
  • a pneumatic wrench device with an air-powered hand-held screwdriver that has a compressed-air motor, has a compressed air connection for a compressed air supply and a control line.
  • a check valve for the compressed air supply is integrated, which can be controlled externally via the control line.
  • the hand screwdriver In the hand screwdriver are the components mentioned above, in particular the electrically controllable shut-off valve, the at least one electrical sensor for Determination of switching on and off, as well as the torque sensor integrated and connected to the control line.
  • the control device is expediently an electric power tool on the handheld screwdriver Contact plug provided.
  • the hand screwdriver needs at work, therefore, only one at work available connected compressed air connection and a connection for the control line connected be ready for use immediately.
  • the electrical remote monitoring and remote control of these three components are in the controller preferably all operating conditions and functions of the hand screwdriver monitored and in case of malfunction, the hand screwdriver is locked. From the signals transmitted to the control device can namely namely in particular the number of screw connections per workpiece, the torque curve per fitting and determine the length of time per fitting and check whether these values are within specified target ranges.
  • FIG. 1 The sectional view of FIG. 1 is based on a construction or workshop drawing, in which the individual components of a hand screwdriver 2 are drawn in a manner conventional and understandable to the person skilled in the art. Therefore, in the following, only the individual functional blocks of the glove will be described 2 explained in more detail.
  • the structure of the individual function blocks per se is known or readily executed by the skilled person.
  • the hand screwdriver 2 has a housing 4, which at its rear End of a compressed air connection 6 and an electrical connection 8 for a here shown in detail, in particular multi-core external control line 10 has.
  • the individual wires of the external control line 10 are of the electrical Terminal 8 from here over for clarity not shown internal in the interior of the housing 4 extending control lines with different Components for their control, ie monitoring or control, connected, as will be explained in more detail below.
  • a screw cap 12 is arranged, about the screwdriver 2 screws screwed into a workpiece become.
  • the front end 2 of the elongated handgrip are one towards the rear end mechanical torque coupling 14, a torque sensor 16, a pneumatic motor 18, a via a valve pin 20 mechanically actuated start / stop valve 22, a sensor 24 for the valve 22 and a check valve 26 are arranged.
  • Farther is on the outside of the housing 4, an optical display element 28 with Light emitting diodes provided.
  • the torque sensor 16, the sensor 24, the check valve 26 and the display element 28 are each initially via an internal control line with the electrical connection 8 and then proceeding via the external control line 10 is connected to a control device 30 (see Fig. 2).
  • the torque sensor 16 is an electric torque sensor, for example a so-called DMS (strain-measuring strip) torque sensor used.
  • the sensor 24 is designed and detected, for example, as a proximity switch the position of a closure element 32 in the embodiment as a ball valve trained valve 22.
  • the closure element 32 is in this case over the Valve pin 20 is actuated, in mechanical operative connection with the screw attachment 12 stands. By placing the spring-loaded screw attachment 12 and Pressing against the screw with a predetermined pressure, the valve pin 20 within the hand screw 2 pushed back so that the Valve 22 opens.
  • the check valve 26 is in particular a conventional, electrical controllable pneumatic valve, which is designed such that it when activated to a forced interruption of a compressed air supply 34th leads to the compressed air motor 18.
  • an adjustment lever 36 is provided, via which the direction of rotation of the screw attachment 12 can be adjusted.
  • Such a hand screwdriver 2 becomes, for example, within a production line provided at a workplace 38.
  • Fig. 2 are here For example, several hand screwdriver 2 at several workstations 38 via a common compressed air line 40 connected to a compressed air supply.
  • the hand screwdrivers 2 are each of their associated control device 30 are controlled and connected to it via the external control line 10.
  • the control devices 30 can in this case in a common unit 44 may be integrated, as indicated by the dashed lines. How out This schematic illustration shows, are for connecting the hand screwdriver 2 at the workplace only one compressed air connection and the connection necessary to the control device 30. Further components are on respective job 38 is not required. The establishment of such a workplace 38 is therefore very flexible and inexpensive.
  • the screwdriver 2 is used to screw in a screw his fferetzsatz 12 pressed on the tightening screw, so that the Start / stop valve 22 is opened and via the pneumatic motor 18 a rotary movement is transferred to the screw cap 12.
  • a predetermined Torque engages the torque clutch 14 and prevents a tightening of the screw over a defined torque value.
  • the torque coupling is preferably designed adjustable. After completing screwing the start / stop valve 22 closes again. about the sensor 24 is first a switch-on or start signal S1 and then a switch-off or stop signal S2 is transmitted to the control device 30 and recorded and evaluated there.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP05002097A 2004-03-23 2005-02-02 Tournevis à air comprimé Withdrawn EP1579957A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004004530U 2004-03-23
DE200420004530 DE202004004530U1 (de) 2004-03-23 2004-03-23 Druckluftschraubervorrichtung

Publications (2)

Publication Number Publication Date
EP1579957A2 true EP1579957A2 (fr) 2005-09-28
EP1579957A3 EP1579957A3 (fr) 2009-07-29

Family

ID=34833334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05002097A Withdrawn EP1579957A3 (fr) 2004-03-23 2005-02-02 Tournevis à air comprimé

Country Status (2)

Country Link
EP (1) EP1579957A3 (fr)
DE (1) DE202004004530U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2937183A1 (fr) 2014-04-23 2015-10-28 Jürgen Fehlings Procédé d'actionnement d'un dispositif de vissage de composants, et dispositif d'exécution du procédé
EP2937182A1 (fr) 2014-04-23 2015-10-28 Jürgen Fehlings Dispositif de vissage de composants

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011103656A1 (de) 2011-06-08 2012-12-13 Daimler Ag Druckluftschrauber mit Leuchte

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117919A (en) * 1989-09-11 1992-06-02 The Rotor Tool Company Torque control system and method
US5315501A (en) * 1992-04-03 1994-05-24 The Stanley Works Power tool compensator for torque overshoot
US6311786B1 (en) * 1998-12-03 2001-11-06 Chicago Pneumatic Tool Company Process of determining torque output and controlling power impact tools using impulse
US6460629B2 (en) * 2000-11-15 2002-10-08 The Stanley Works Pneumatic tool and system for applying torque to fasteners

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2937183A1 (fr) 2014-04-23 2015-10-28 Jürgen Fehlings Procédé d'actionnement d'un dispositif de vissage de composants, et dispositif d'exécution du procédé
EP2937182A1 (fr) 2014-04-23 2015-10-28 Jürgen Fehlings Dispositif de vissage de composants

Also Published As

Publication number Publication date
EP1579957A3 (fr) 2009-07-29
DE202004004530U1 (de) 2005-08-04

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