WO2003097339A1 - Presse a main - Google Patents

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Publication number
WO2003097339A1
WO2003097339A1 PCT/EP2003/003238 EP0303238W WO03097339A1 WO 2003097339 A1 WO2003097339 A1 WO 2003097339A1 EP 0303238 W EP0303238 W EP 0303238W WO 03097339 A1 WO03097339 A1 WO 03097339A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
stroke
press according
press ram
clutch
Prior art date
Application number
PCT/EP2003/003238
Other languages
German (de)
English (en)
Inventor
Hartmut Babiel
Werner Schubert
Original Assignee
Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG
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 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG filed Critical Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG
Priority to AT03720381T priority Critical patent/ATE440719T1/de
Priority to DE50311851T priority patent/DE50311851D1/de
Priority to EP03720381A priority patent/EP1507650B1/fr
Publication of WO2003097339A1 publication Critical patent/WO2003097339A1/fr
Priority to US10/985,676 priority patent/US7080595B2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B30B15/142—Control arrangements for mechanically-driven presses controlling the brake or the clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/24—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by rack-and-pinion means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0094—Press load monitoring means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/10—Brakes specially adapted for presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/288—Arrangements for preventing distortion of, or damage to, presses or parts thereof preventing over-run or reverse-run of the press shaft

Definitions

  • the invention relates to a manually operated press with an actuating member, the movement of which is converted into a lifting movement of a press ram, a lift lock being provided in order to prevent a predetermined lifting movement of the press ram.
  • a press of the type mentioned above, in which the stroke lock is designed as a return stroke lock, is known from DE 199 59 627 AI.
  • Hand-operated presses of the type described above are usually used in chord workplaces. Since the effort required to manually operate the press increases towards the end of the press stroke, some operators tend to carry out the press stroke only incompletely and to initiate the return stroke before the intended lower end point of the press stroke is reached. Then, however, the pressing process is not completed correctly, so that low-quality pressed workpieces or even rejects occur.
  • the return stroke lock is constructed mechanically.
  • the mechanical return stroke lock is realized by a grooved washer with a locking bolt.
  • the grooved washer When a hand lever of the press is actuated, the grooved washer is rotated and the locking bolt runs in a predetermined grooved path of the grooved washer.
  • the groove track has steps at two positions, which correspond to the end of the rough stroke or the end of the fine stroke.
  • the grooved washer can no longer be rotated backwards over the step, ie the press ram can no longer be moved back upwards. Only when the press ram has run through the entire press stroke does the locking pin move into a position in which it can automatically return to the beginning of the slot track. This means that the press ram first can be moved upwards again in its starting position after the route has been completed.
  • a second problem with manually operated presses of the type mentioned at the outset is that an individual grooved washer has to be produced for each pressing process. This is due to the fact that the length of the rough stroke and the length of the fine stroke each depend individually on the workpieces to be joined. However, all this has a disadvantageous effect in the case of so-called sequential multiple pressings. In such operations, namely, several parts are assembled in succession in several pressing operations, for example a circlip, a bearing, a crack, a seal, etc. are assembled on a shaft in succession.
  • a third problem with manually operated presses of the type mentioned at the outset is to ensure that a distinction is made between so-called good parts and bad parts.
  • the invention has for its object to develop a hand-operated press of the type mentioned in such a way that the problems described are avoided.
  • a hand-operated press is to be made available, the pressing processes of which can be documented, in which multiple pressings can be carried out in a simple manner and without mechanical intervention, and which finally offers the possibility of taking precautions to ensure that bad parts are eliminated with a high degree of probability can.
  • the stroke lock has a first sensor for detecting the stroke movement of the press ram and a clutch actuated as a function of signals from the first sensor, with which a force transmission between the actuating member and the press ram can be prevented is.
  • the stroke lock is implemented electronically opens up the possibility of being able to document press processes, so that manufacturing processes with hand-operated presses can be certified according to ISO 9000 for the first time.
  • the control by means of sensor signals used in the press according to the invention also has the advantage that the locking points of the stroke lock can be programmed from the outside, so that the press can be parameterized and remotely controlled. Appropriate programming can therefore be used to carry out the sequential multiple pressings already mentioned, because the detent points to be set for this purpose, for example for three or four successive pressing processes, can be adjusted individually in order to then be repeated cyclically.
  • the press can be provided with a return stroke lock in a manner known per se, which prevents a return stroke movement of the press ram before it has reached a predetermined end position.
  • the stroke lock can also be designed as a work stroke lock, which prevents a further working stroke movement of the press ram beyond a predetermined stroke position.
  • the press ram can be fixed in space by means of the coupling.
  • This measure has the advantage that the entire press is immobilized, so that an operator can no longer manipulate the press if, contrary to the regulation, a return stroke process is initiated before the end point of the press stroke is reached.
  • the actuating member is designed in a manner known per se as an actuating lever which is connected to a shaft which is locked when the actuating lever pivots. is turning. It is preferred if a first disk is arranged on the shaft in a rotationally fixed manner, a second fixed disk is arranged next to the first disk and the disks are designed as clutch disks of the clutch.
  • This measure has the advantage that an angle sensor can be used to detect the stroke movement of the press ram, for example a commercially available angle sensor that detects the increment marks arranged on the circumference of the rotatable disk.
  • a sensor can be, for example, fork-shaped or the like.
  • the coupling can also be switched on in the power flow between the actuating member and the press ram. In this case, it is also prevented that a movement of the actuating member in the wrong direction initiates a return stroke movement of the press ram, because the actuating member idles when the clutch is actuated, since a transmission of force to the press ram is prevented.
  • the coupling is a magnetic coupling. But it can also be operated pneumatically or hydraulically. This measure also has the advantage that commercially available components that are easy to assemble and control can be used.
  • a second sensor for detecting the pressing force exerted by the press ram and means are provided to derive a signal characterizing the quality of the pressing process from the dependence of the pressing force on the lifting movement.
  • This measure has the advantage that immediate quality control is now also possible for hand-operated presses using a force-displacement diagram, which is particularly beneficial for the desired certifiability.
  • the invention makes use of the fact that a first sensor for the press stroke must be provided for the implementation of the electronic return stroke lock already described, which sensor can then be used as a second use for creating force-displacement diagrams.
  • a particularly preferred development of the last-mentioned variant consists in that at the end of a pressing process the power transmission between the actuating member and the press ram is first interrupted and only released again when the signal corresponds to a good pressing process.
  • This measure has the advantage that an immediate removal of the pressed workpiece is only possible in cases in which the above-mentioned quality control has recognized a good part. Only then will the next pressing process be released. In all other cases, the badly pressed workpiece remains in the press and special measures are then required in order to remove this bad part from the press, as a result of which sufficient attention has been paid to ensure that the bad part is properly disposed of.
  • the single figure shows an extremely schematic side view (partially broken open) of an embodiment of a manual press according to the invention.
  • 10 designates a hand-operated press of generally known design.
  • the press 10 has a base part 12 which stands on a suitable base, for example a workbench. From the base part 12, supports 14 lead upwards to a head part 16, the housing of which is indicated at 17. An actuating lever 18 can be seen on the side of the head part 16 and is connected to a shaft 20 mounted in bearings 19 in the housing 17. On in this way, the shaft 20 can be rotated about its axis 22 by pivoting the actuating lever 18, as indicated by an arrow 24.
  • gear 26 in the simplest case a pinion-rack arrangement. This serves to convert the rotary movement of the shaft 20 into a vertical stroke movement of a press ram 30 indicated by an arrow 28.
  • the press is of a conventional design.
  • the press 10 has a first disk 40 which is connected to the shaft 20 in a rotationally fixed manner.
  • a second disk 42 which, as indicated by the sectional illustration in the figure, is designed as a ring, so that the shaft 20 can be guided through the second disk 42.
  • the second disc 42 is rigidly connected to the housing 17 by means of a support 43 and is therefore spatially fixed.
  • a clutch is indicated, which comprises both disks 40, 42, the disks 40, 42 serving as clutch disks.
  • the clutch 44 is preferably a magnetic clutch. However, it can also be carried out with pneumatic or hydraulic actuation.
  • the clutch 44 is preferably a magnetic clutch. It is electrically connected to an electronic control device 46. Control signals from the outside can be fed to the electronic control device 46 via inputs 48, for example from a numerical control unit.
  • a first sensor 50 is arranged, which interacts with marks on the first disc 40, in particular with increment marks, which are arranged on the circumference of the first disc 40.
  • the first sensor 50 can be rod-shaped, fork-shaped or the like. It detects the rotation of the first disk 40 and thus the stroke movement and thus the path of the press ram 30 via the transmission factor of the transmission 26.
  • the first sensor 50 is also connected to the electronic control unit 46.
  • the press ram 30 can be provided with a second sensor 52 with which the respective pressing force can be detected.
  • the second sensor 52 is also connected to the electronic control unit 46.
  • the force flow in the shaft 20 could also be separated by means of a corresponding coupling, in which case the shaft 20 would have to be divided axially, the first disk 40 on the left part of the shaft and the second disk 42 on the right part the shaft would have to be arranged so that the two parts of the shaft can be connected to one another in a rotationally fixed manner by means of the coupling 44, or alternatively can be detached from one another.
  • any desired brands can be specified for the pressing processes without having to change anything mechanically on the press 10.
  • the end position of the stroke can also be specified electronically and the hand-operated press 10 can thus become part of a computer-controlled production.
  • a working stroke lock can be realized, in which the press ram 30 is prevented from being moved beyond a predetermined stroke position.
  • a first sensor 50 is provided for the electronic return stroke lock anyway for the path detection of the press ram 30, this can be used according to the invention by providing the second sensor 52 for force measurement in a manner known per se. Then the electronic control unit 46 can then form a force-displacement diagram and thereby generate a criterion for whether the workpieces 34, 36 have been pressed "good” or "bad".
  • the force-displacement diagrams can of course be called up by the electronic control unit 46 and fed to a central data processing unit in order to document the entire manufacturing process.
  • the control of the press 10 can preferably be set via the electronic control unit 46 such that the coupling 44 is closed at the end of the pressing process and the entire arrangement is thus initially immobilized.
  • This immobilization means that the press 10 can initially no longer be operated. Of course, this condition is only maintained until the quality of the pressing process that has just been completed has been determined. If this check shows that a good part has been produced, the coupling 44 is released immediately and the operator can remove the pressed workpiece and start the next pressing process. If, on the other hand, the test reveals that a bad part has been produced, the coupling 44 remains closed, so that the operator can no longer carry out any further pressing operations with the press 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

L'invention concerne une presse à main (10) qui comprend un élément d'actionnement dont le mouvement est converti en un mouvement de course d'un coulisseau de presse (30). Un dispositif de blocage de course, par exemple un dispositif anti-retour, empêche un mouvement de course prédéfini du coulisseau de presse (30). Le dispositif de blocage de course comprend un premier capteur (50) servant à détecter le mouvement de course du coulisseau de presse (30), ainsi qu'un dispositif d'accouplement (44) actionné en fonction des signaux du premier capteur (50) et servant à empêcher une transmission de force entre l'élément d'actionnement et le coulisseau de presse.
PCT/EP2003/003238 2002-05-16 2003-03-28 Presse a main WO2003097339A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT03720381T ATE440719T1 (de) 2002-05-16 2003-03-28 Handbetätigte presse
DE50311851T DE50311851D1 (de) 2002-05-16 2003-03-28 Handbetätigte presse
EP03720381A EP1507650B1 (fr) 2002-05-16 2003-03-28 Presse a main
US10/985,676 US7080595B2 (en) 2002-05-16 2004-11-11 Manually operated press

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10223153A DE10223153C1 (de) 2002-05-16 2002-05-16 Handbetätigte Presse
DE10223153.2 2002-05-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/985,676 Continuation US7080595B2 (en) 2002-05-16 2004-11-11 Manually operated press

Publications (1)

Publication Number Publication Date
WO2003097339A1 true WO2003097339A1 (fr) 2003-11-27

Family

ID=7714573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003238 WO2003097339A1 (fr) 2002-05-16 2003-03-28 Presse a main

Country Status (5)

Country Link
EP (1) EP1507650B1 (fr)
AT (1) ATE440719T1 (fr)
DE (2) DE10223153C1 (fr)
ES (1) ES2329353T3 (fr)
WO (1) WO2003097339A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007006523A1 (fr) * 2005-07-13 2007-01-18 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG Presse a main comprenant une securite contre la surcharge

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011080030A1 (de) 2011-07-28 2013-01-31 Hartmut Babiel Handbetätigte Presse

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041420A5 (fr) * 1969-04-23 1971-01-29 But Ste
FR2286339A1 (fr) * 1974-09-24 1976-04-23 Lbm Presses Dispositif de protection anti-chute d'un plateau mobile de presse
DE3533003A1 (de) * 1985-09-16 1987-03-26 Schmidt Feintechnik Gmbh Handbetaetigbare presse
EP0622175A1 (fr) * 1993-04-29 1994-11-02 Gebr. Schmidt Fabrik Fur Feinmechanik Presse à commande manuelle
JPH11230191A (ja) * 1998-02-13 1999-08-27 Kodera Denshi Seisakusho:Kk 手動動力伝達クラッチ
US20010022142A1 (en) * 1999-12-10 2001-09-20 Werner Schubert Manually operable press having an emergency unlocking botton
US6293155B1 (en) * 1997-02-13 2001-09-25 GEBR, SCHMIDT FABRIK FüR FEINMECHANIK Method for operating an electric press

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041420A5 (fr) * 1969-04-23 1971-01-29 But Ste
FR2286339A1 (fr) * 1974-09-24 1976-04-23 Lbm Presses Dispositif de protection anti-chute d'un plateau mobile de presse
DE3533003A1 (de) * 1985-09-16 1987-03-26 Schmidt Feintechnik Gmbh Handbetaetigbare presse
EP0622175A1 (fr) * 1993-04-29 1994-11-02 Gebr. Schmidt Fabrik Fur Feinmechanik Presse à commande manuelle
US6293155B1 (en) * 1997-02-13 2001-09-25 GEBR, SCHMIDT FABRIK FüR FEINMECHANIK Method for operating an electric press
JPH11230191A (ja) * 1998-02-13 1999-08-27 Kodera Denshi Seisakusho:Kk 手動動力伝達クラッチ
US20010022142A1 (en) * 1999-12-10 2001-09-20 Werner Schubert Manually operable press having an emergency unlocking botton

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007006523A1 (fr) * 2005-07-13 2007-01-18 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG Presse a main comprenant une securite contre la surcharge
US7562622B2 (en) 2005-07-13 2009-07-21 Gebr. Schmidt Fabrik Fuer Feinmechanik Gmbh & Co. Kg Manually operated press having an overload protection

Also Published As

Publication number Publication date
DE50311851D1 (de) 2009-10-08
ES2329353T3 (es) 2009-11-25
DE10223153C1 (de) 2003-07-31
ATE440719T1 (de) 2009-09-15
EP1507650B1 (fr) 2009-08-26
EP1507650A1 (fr) 2005-02-23

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