US20040064931A1 - Screwing station - Google Patents

Screwing station Download PDF

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Publication number
US20040064931A1
US20040064931A1 US10/467,218 US46721803A US2004064931A1 US 20040064931 A1 US20040064931 A1 US 20040064931A1 US 46721803 A US46721803 A US 46721803A US 2004064931 A1 US2004064931 A1 US 2004064931A1
Authority
US
United States
Prior art keywords
screw
driving machine
pickup
axis
track
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.)
Abandoned
Application number
US10/467,218
Other languages
English (en)
Inventor
Elmar Albrecht
Markus Schleier
Gottfried Seeberger
Rudolf Plachta
Holger Maier
Jurgen Reddig
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Assigned to ZF FRIEDRICHSHAFEN AG reassignment ZF FRIEDRICHSHAFEN AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REDDIG, JURGEN, SCHLEIER, MARKUS, SEEBERGER, GOTTFRIED, MAIER, HOLGER THOMAS, PLACHTA, RUDOLF, ALBRECHT, ELMAR
Publication of US20040064931A1 publication Critical patent/US20040064931A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention concerns a screw pickup for the automated screw assembly of gearboxes according to the principal clause of claim 1.
  • the invention is based on the task of creating a process-secure device for the screw assembly of gear box.
  • a screw pickup for the screw assembly of gear boxes is proposed, involving the provision of a connection plate, which is detachably connected to the gear box.
  • a first track is arranged on the connection plate along which, on a first axis, a second track can be moved relative to the connection plate.
  • a third track is arranged on the second track, which can be moved relative to the connection plate along a second axis which runs perpendicular to the first axis, and which enables a screw-driving machine to be moved relative to the connection plate along a third axis which extends perpendicular to the second axis, so that the screw-driving machine reaches the screw connection to be tightened.
  • the third track can be moved relative to the connection plate along the third axis and, in another design, the screw-driving machine can be moved relative to the connection plate on the third track along the third axis.
  • Another design has tracks each of which is driven by an electric motor.
  • the electric motors of the tracks and the screw-driving machines are actuated by a control device which is integrated into the screw pickup.
  • the control device is programmable in such a way that, in predetermined positions, the screw connections are actuated by the screw-driving machine, and are tightened to a predetermined degree of torque.
  • the tracks are located within a protective device and the screw-driving machine simply moves within this protective device through which, in another design, it is possible to obtain access thereto.
  • the screw-driving machine maintains a constant axis of rotation during actuation of the various screw connections of the gear box.
  • the screw-driving machine used is an electrically operated screw-driving machine; in another design, it is a pneumatically operated screw-driving machine whereby the electric motors of the tracks and the air supply of the pneumatically operated screw-driving machine can also be controlled by the control device which is integrated into the screw pickup.
  • the screw-driving machine used is a screw-driving machine of a type customarily found in the trade whose torque is adjustable and which includes monitoring of the torque.
  • Such a screw-driving machine can register the revolutions implemented during a screwing process and its speed of rotation is continuously adjustable.
  • the tracks for example, are constructed through the use of highly precise linear units with AC servo motors, incremental rotary pulse transmitters, limit switches and brakes.
  • the position of each screw required and the required degree of clamping torque are programmed, in advance, into the control device by the fitter of the screw pickup.
  • the fitter can either program the position by means of a coordinate system relative to the connection plate or manually displace the screw-driving machine to the desired position while allowing the control device, by means of this manual displacement, to “learn” the correct position.
  • the fitter can have access to the internal workings of the protective device in order to reach the screw-driving machine.
  • the positions installed for a certain type of gear are always the same. This is ensured by the connection plate used for the respective gear type, which is always fastened to the same location on the respective gear box.
  • the screws are inserted into the threaded holes in the gear box and the screw pickup is set in operation.
  • the screw-driving machine successively moves to each of the various screw connections, tightens the respective screw connection and moves on to the next one.
  • a suitable message concerning the completion of the process is sent to the operator—for example, by means of a colored signal lamp. If, in the course of operation, any screw connection is recognized not to be in good order—for example, because the requisite torque cannot be achieved, or because the number of revolutions implemented is recognized as insufficient, this malfunction is similarly brought to the attention of the operator and, following a suitable acknowledgment, the screw connection in question is again loosened.
  • the screw pickup then automatically proceeds to the next screw connection. Following the completion of all screw connections and the sending of a suitable message, the operator can determine which screw connections must be checked by observing which screw connections have not been tightened and, if necessary, tighten it manually.
  • the drawing shows a screw pickup 2 which is set in place on a gear box 4 .
  • the gear box itself is mounted on a mobile assembly cart 6 , by which it is transported in a process chain in the area of the screw pickup 2 .
  • the gear box 4 is rotatably mounted on the assembly cart 6 so that it can be rotated by an operator into such a position as to enable a connection plate 8 to be detachably fastened to the gear box 4 —for example, to be tightly clamped thereto by means of suitable clamping devices (not shown).
  • a first track 10 is rigidly fastened to the connection plate 8 .
  • a second track 12 which can be moved relative to the connection plate 8 along a first axis 14 of the first track 10 is provided on the first track 10 at right angles thereto.
  • a third track 16 which can be moved relative to the connection plate 8 along a second axis 18 of the second track 12 is provided on the second track 12 at right angles thereto.
  • a screw-driving machine 20 is fastened to the third track 16 , which can be moved relative to the connection plate 8 along a third axis 22 of the third track 16 .
  • the third track 16 can also be arranged on the second track 12 in such a way that the third track 16 is itself moved along the third axis 22 .
  • a protective frame 24 is provided on the first track 10 , which surrounds all of the tracks 10 , 12 , 16 and the screw-driving machine 20 , so that the operator cannot be injured during the course of the automatic displacement of the screw-driving machine 20 .
  • An electronic control device 26 is also provided on the track 10 , which is in connection with the screw-driving machine and the tracks 10 , 12 , 16 and controls them.
  • the proposed screw pickup 2 enables the automated assembly of a gear box 4 by means of a pneumatically or electrically operated screw-driving machine 20 for any desired number of screw connections.
  • the operator of the screw pickup 2 can undertake additional activities.
  • the space required for the screw pickup 2 is small and only slightly larger than the gear box 4 itself. This space requirement, however, cannot compare to, and is significantly less than, the space requirement for an industrial robot; moreover, the costs involved in both of these types of systems are extremely different.
  • the screw pickup 2 is easy to operate and the handling thereof can quickly be learned by trained operator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Transmission Devices (AREA)
US10/467,218 2001-02-09 2002-02-05 Screwing station Abandoned US20040064931A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10106037A DE10106037A1 (de) 2001-02-09 2001-02-09 Schraubstation
DE10106037.8 2001-02-09
PCT/EP2002/001145 WO2002064306A1 (de) 2001-02-09 2002-02-05 Schraubstation

Publications (1)

Publication Number Publication Date
US20040064931A1 true US20040064931A1 (en) 2004-04-08

Family

ID=7673482

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/467,218 Abandoned US20040064931A1 (en) 2001-02-09 2002-02-05 Screwing station

Country Status (5)

Country Link
US (1) US20040064931A1 (de)
EP (1) EP1358039B1 (de)
BR (1) BR0207111A (de)
DE (2) DE10106037A1 (de)
WO (1) WO2002064306A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140053396A1 (en) * 2012-08-24 2014-02-27 Fih (Hong Kong) Limited Screw assembling device
US20140137705A1 (en) * 2012-11-19 2014-05-22 Hon Hai Precision Industry Co., Ltd. Screw-removing device
US9333604B1 (en) * 2012-07-19 2016-05-10 Western Digital Technologies, Inc. Manually adjustable bracket for use with a fastener mechanism

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6681659B2 (en) * 2001-03-14 2004-01-27 Seagate Technology Llc Automatic fastener apparatus and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238242A (ja) * 1984-05-11 1985-11-27 Honda Motor Co Ltd 汎用ねじ締付装置
JP2765395B2 (ja) * 1992-09-09 1998-06-11 日産自動車株式会社 ねじ締め装置
DE19846947A1 (de) * 1998-10-12 2000-04-13 Zahnradfabrik Friedrichshafen Überwachter Druckluftschrauber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6681659B2 (en) * 2001-03-14 2004-01-27 Seagate Technology Llc Automatic fastener apparatus and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9333604B1 (en) * 2012-07-19 2016-05-10 Western Digital Technologies, Inc. Manually adjustable bracket for use with a fastener mechanism
US20140053396A1 (en) * 2012-08-24 2014-02-27 Fih (Hong Kong) Limited Screw assembling device
US9451735B2 (en) * 2012-08-24 2016-09-20 Shenzhen Futaihong Precision Industry Co., Ltd. Screw assembling device
US20140137705A1 (en) * 2012-11-19 2014-05-22 Hon Hai Precision Industry Co., Ltd. Screw-removing device

Also Published As

Publication number Publication date
DE10106037A1 (de) 2002-08-14
DE50201354D1 (de) 2004-11-25
EP1358039A1 (de) 2003-11-05
BR0207111A (pt) 2004-01-27
WO2002064306A1 (de) 2002-08-22
EP1358039B1 (de) 2004-10-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ZF FRIEDRICHSHAFEN AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ALBRECHT, ELMAR;SCHLEIER, MARKUS;SEEBERGER, GOTTFRIED;AND OTHERS;REEL/FRAME:014721/0181;SIGNING DATES FROM 20030508 TO 20030613

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION