EP0395889B1 - Dispositif de serrage de pièces - Google Patents

Dispositif de serrage de pièces Download PDF

Info

Publication number
EP0395889B1
EP0395889B1 EP90106198A EP90106198A EP0395889B1 EP 0395889 B1 EP0395889 B1 EP 0395889B1 EP 90106198 A EP90106198 A EP 90106198A EP 90106198 A EP90106198 A EP 90106198A EP 0395889 B1 EP0395889 B1 EP 0395889B1
Authority
EP
European Patent Office
Prior art keywords
clamping
shaft
thread
rotary motor
coupling member
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.)
Expired - Lifetime
Application number
EP90106198A
Other languages
German (de)
English (en)
Other versions
EP0395889A2 (fr
EP0395889A3 (fr
Inventor
Johann Szebold
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.)
Kontec Konstuktion and Technik Im Maschinenbau GmbH
Kontec GmbH
Original Assignee
Kontec Konstuktion and Technik Im Maschinenbau GmbH
Kontec 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 Kontec Konstuktion and Technik Im Maschinenbau GmbH, Kontec GmbH filed Critical Kontec Konstuktion and Technik Im Maschinenbau GmbH
Priority to AT90106198T priority Critical patent/ATE103226T1/de
Publication of EP0395889A2 publication Critical patent/EP0395889A2/fr
Publication of EP0395889A3 publication Critical patent/EP0395889A3/fr
Application granted granted Critical
Publication of EP0395889B1 publication Critical patent/EP0395889B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/062—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis parallel to the pressing direction
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive

Definitions

  • the invention relates to a workpiece clamping device which can be actuated by a rotation motor which is reversible in the direction of rotation, comprising a shaft which can be driven by the rotation motor and is provided with a movement thread, which is rotatable in a guide housing and axially supported in an intermediate piece on roller bearings, and an actuating rod which is provided with an internal thread is secured against rotation and is connected to a tension arm or the like, and is in engagement with the actuating thread of the shaft for carrying out tensioning or loosening.
  • Swing clamps (DE-C-2 909 464 and DE-C-3 603 618) are also known, in which the clamping head or the clamping arm is arranged on an axially moving piston.
  • the piston carries out a stroke of a certain stroke length, which is composed of the swivel stroke and the clamping stroke.
  • the invention is based on the object of designing a device of the type mentioned at the outset such that, when higher clamping forces are transmitted, both clamping by swiveling and linear movement are possible.
  • the outside of the actuating rod is provided with an outer longitudinal groove, in which a guide and stop bolt, which can optionally be screwed in for a linear (axial) clamping operation, engages in the threaded bore of the internal thread of the actuating rod with an inner longitudinal groove is At the free end of the shaft, a stepped extension with a transverse bore is provided for a coupling device provided with a coupling member (13), the coupling member of which engages in the inner longitudinal groove and disengages from this longitudinal groove after striking the clamping arm on one of the stop pins in order to carry out a linear clamping movement Clamping of the workpiece.
  • the outside of the actuating rod is provided with an external longitudinal groove in which a guide and stop bolt, which can optionally be screwed into the guide housing for a linear (axial) clamping process, engages, the shaft is extended by means of a profile pin and is in engagement with a coupling member with a corresponding inner profile,
  • a compression spring is attached, whereby the coupling member is supported on a shoulder of the actuating rod with rotational friction and, after the clamping arm strikes one of the stop pins, overcomes the rotational friction for carrying out a linear clamping movement for clamping the workpiece.
  • An advantageous embodiment provides that a pneumatic motor is provided as the rotary motor, which drives the shaft via a reduction gear.
  • a driving pin arranged eccentrically on the output shaft of the rotary motor engages accordingly in a coaxial and non-rotatably connected flange disk and that this flange disk is supported on both sides on roller bearings designed as transverse bearings.
  • stop pins for the tensioning arm are provided on the end face of the guide housing.
  • a cover with circumferentially adjustable stop pins is attached to the threaded guide housing in order to achieve an arbitrary pivoting angle of the tensioning arm.
  • An advantageous embodiment provides that the shaft of the rotary motor and the guide housing are provided with a thread for screwing into a worktop.
  • the invention has the advantage that the clamping head or the clamping arm does not open after the drive mechanism has been switched off. This has particular advantages when the machine is switched off during breaks, which means that considerable energy savings can be achieved. Workpieces on pallets can also be prepared for later processing for series production. Furthermore, there is the advantage of a small, compact design and large clamping forces can be achieved compared to the known hydraulic clamping devices. Various mechanical connection options can also be implemented.
  • a conventional pneumatic rotary motor 1 which is reversible in its direction of rotation and which is fastened to an intermediate piece 2 serves as the drive.
  • the motor housing is provided with a thread 3, for example, and screwed into the intermediate piece 2.
  • the intermediate piece 2 is used to attach the device to a machine table.
  • the rotary motor 1 is provided with a reduction gear and a driver pin 4 engages in a flange disc 5.
  • the bearing is carried out with the help of roller bearings 6 and 7 in a guide housing 8 which is screwed onto the intermediate piece 2.
  • the driver pin 4 engages in the flange disk 5 off-center and moves about the central axis of this disk 5.
  • an actuating rod 11 is screwed onto this shaft 9 and can be displaced within the guide housing 8. Furthermore, the shaft 9 has a stepped extension 12 with a transverse bore 12 ', in which a coupling member 13 is arranged in the form of a pin with a coupling spring 14. This coupling member 13 engages in an axially extending inner longitudinal groove 15 on the inside of the actuating rod 11. Furthermore, the actuating rod 11 is provided in the middle with a lubrication bore 16 and a wiper 17 is also located between the guide housing 8 and the actuating rod 11.
  • an outer longitudinal groove 18 is provided on the outside of the actuating rod 11 and is engaged by a guide and stop bolt 19 which is screwed transversely into the guide housing 8.
  • a clamping arm 20 or other clamping head is attached at the end of the operating rod 11.
  • stop pins 21 are attached to the front of the housing.
  • the bolt 19 reaching into the outer longitudinal groove 18 is screwed in, the shaft 9 being driven so that the actuating rod 11 is displaced axially.
  • the displacement is limited by the length of the groove 18.
  • the device If the device is to work as a swing clamp, then the bolt 19 is removed so that the actuating rod 11 can perform a rotary movement. This is caused in that the coupling member 13 engages in the groove 15. This device also acts as overload protection, with the coupling member 13 being pushed back out of the groove 15 if the rotary movement for the actuating rod 11 is correspondingly inhibited.
  • the stop pins 21 serve both as an anti-twist device for the actuating rod 11 and as a limitation of the pivoting angle of the tensioning arm 20. If the tensioning arm 20 additionally executes a pivoting movement at a certain angle, which can be set as desired using the stop pins 21, the following function results. With the actuating rod 11 extended and after the bolt 19 has been removed, the rotary motor 1 is switched in such a way that the actuating rod 11 is retracted. Since the shaft 9 is connected to the actuating rod 11 by the coupling device 13, 14, and the shaft 9 performs a rotary movement, the tensioning arm 20 also carries out a corresponding rotary movement.
  • the motor 1 When relaxing, the motor 1 is driven in the opposite direction, ie the actuating rod 11 is extended so that the workpiece is released. If the frictional force between the clamping arm 20 and the workpiece is smaller than the coupling force of the coupling device 13, 14, the clamping arm 20 can pivot up to one of the stop pins 21. Thereafter, until the engine is switched off by the clutch device 13, 14 causes an axial movement in the direction of relaxation.
  • the shaft 9 is extended by a profile pin 12 ⁇ .
  • a coupling member 13' is placed with a corresponding inner profile and extended by means of a threaded pin 30 which is guided through a shoulder 29 of the actuating rod 11. If the device works as a linear clamp, then the stop pin 19 is screwed in and engages in the groove 18 (FIG. 3).
  • the actuating rod 11 is axially displaced by the driven shaft 9 with the thread 10.
  • a compression spring is inserted into the space 26 and the spring tension is adjusted by means of a nut 31.
  • the coupling member 13 ' is pressed against the shoulder 29.
  • the actuating rod 11 is taken along when the coupling member 13 is rotated by the friction on the shoulder 29. After striking the clamping arm 20 on one of the stop pins 21, this friction is overcome and the actuating rod 11 executes a linear clamping movement for clamping the workpiece.
  • Grooves 24 are provided on the guide housing 8 for attaching the cover 28 for holding the stop pins 21. Furthermore, a cover screw 25 is screwed onto the actuating rod 11.
  • the spring 14 ' advantageously it is disc springs, is against a disc 23. Threaded sections 22 are used to fasten the device to a worktop Guide housing 8 and the rotary motor 1 and also a screw-on fastening 27 in the middle of the device on the guide housing 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (8)

  1. Dispositif de serrage de pièces manoeuvrables par un moteur rotatif dont le sens de rotation est réversible qui consiste en
    1.1 un manche (9) muni d'un filet de mouvement (10) manoeuvrable par un moteur rotatif (1), le manche (9) étant tournable dans une cage de guidage (8) et étayé axialement dans une pièce intermédiaire (2) sur boites de rouleau (6,7),
    1.2 une barre de commande (11) munie d'un taraudage et bloquée contre torsion et rattachée à un bras de serrage (20) et aussi en prise avec le filet de commande (10) du manche (9) pour l'exécution de la tension ou du détachement, caractérisé en ce que
    1.3 la face extérieure de la barre de commande (11) est munie d'une rainure longitudinale extérieure (18) dans laquelle engage un boulon de guidage et d'arrêt (19) vissable dans la cage de guidage (8) facultativement pour une action de serrage linéaire (axiale),
    1.4 le percage de filet du taraudage de la barre de commande (11) est muni d'une rainure longitudinale intérieure (15),
    1.5 au bout libre du manche (9) est prévu un allongement recoupé (12) avec un perçage transversal (12') prévu pour un dispositif d'accouplement muni d'un membre d'accouplement (13), dont le membre d'accouplement (13) engrene dans la rainure longitudinale intérieure (15) et après l'arrêt du bras de serrage (20) à un des chevilles d'arrêt (21) il déclenche de cette rainure longitudinale pour faire un mouvement de serrage linéaire à fin d'un serrage de la pièce.
  2. Dispositif de serrage de pièces manoeuvrables par un moteur rotatif dont le sens de rotation est reversible et qui consiste en
    1.1 un manche (9) muni d'un filet de mouvement (10) manoeuvrable par un moteur rotatif (1), le manche (9) étant tournable dans une cage de guidage (8) et étayé axialement dans une pièce intermédiaire (2) sur boites de rouleau (6,7),
    1.2 une bare de commande (11) munie d'un taraudage et bloquée contre torsion et rattachée à un bras de serrage (20) et aussi en prise avec le filet de commande (10) du manche (9) pour l'exécution de la tension ou du détachement, caractérisé en ce que
    1.3. la face de la barre de commande (11) est prévue d'une rainure longitudinale extérieure (18), dans laquelle engage un boulon de guidage et d'arrêt (19) vissable dans la cage de guidage (8) facultativement pour une action de serrage linéaire (axiale),
    1.4 le manche (9) est allongé par des chevilles profilées (12'') et est en prise avec un membre d'accouplement (13') avec profil intérieur correspondant,
    1.5 au bout du membre d'accouplement (13') un ressort de pression (14') est placé, par lequel le membre d'accouplement (13') est étayé sous friction rotative à un épaulement (29) de la barre de commande (11) et après l'arrêt du bras de serrage (20) à un des chevilles d'arrêt (21) la friction rotative pour exécuter un mouvement linéaire de serrage pour serrer la pièce est vaincue.
  3. Dispositif selon revedication 1 ou 2, caractérisé en ce que comme moteur rotatif (1) un moteur pneumatique est prévu qui, par un réducteur de vitesse, commande le manche (9).
  4. Dispositif selon revendications 1 à 3, caractérisé en ce qu'un doigt d'entraînement (4) placé excentriquement sur l'arbre de commande du moteur rotatif (1) engage correspondemment dans une disque de bride (5) du même axe et résistent à la torsion raccordé au manche (9) et que cette disque de bride est étayé des deux côtés sur les boîtes de rouleau (6,7) formées comme boîte transversale.
  5. Dispositif selon revendication 1 ou 2, caractérisé en ce qu' à la face de la cage de guidage (8) des chevilles d'arrêt (21) pour le bras de serrage (20) sont prévues.
  6. Dispositif selon revendication 5, caractérisé en ce que sur la cage de guidage (8) munie d'un filet (22) un couvercle (28) avec des chevilles d'arrêt ajustables au circuit est plaçé, pour parvenir à un angle d'orientation quelconque.
  7. Dispositif selon revendications 1 à 6, caractérisé en ce que le manche du moteur rotatif (1) et la cage de guidage (8) sont munis d'un filet (22) pour être vissé dans une plaque de travail.
  8. Dispositif selon revendications 1 à 7, caractérisé en ce que une fixation de vissage (27) pour une plaque de travail est pourvue à la cage de guidage (8).
EP90106198A 1989-04-06 1990-03-30 Dispositif de serrage de pièces Expired - Lifetime EP0395889B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90106198T ATE103226T1 (de) 1989-04-06 1990-03-30 Werkstueckspannvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911073A DE3911073C1 (fr) 1989-04-06 1989-04-06
DE3911073 1989-04-06

Publications (3)

Publication Number Publication Date
EP0395889A2 EP0395889A2 (fr) 1990-11-07
EP0395889A3 EP0395889A3 (fr) 1992-03-04
EP0395889B1 true EP0395889B1 (fr) 1994-03-23

Family

ID=6377957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106198A Expired - Lifetime EP0395889B1 (fr) 1989-04-06 1990-03-30 Dispositif de serrage de pièces

Country Status (4)

Country Link
EP (1) EP0395889B1 (fr)
JP (1) JPH02292145A (fr)
AT (1) ATE103226T1 (fr)
DE (2) DE3911073C1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430457C2 (de) * 1994-08-27 1998-03-12 Germa Armaturen Gmbh & Co Kg Spannarm
JP6962557B2 (ja) * 2017-10-31 2021-11-05 株式会社コスメック 電動式クランプ装置
CN109290828A (zh) * 2018-11-27 2019-02-01 吉林东光奥威汽车制动系统有限公司 一种带有辅助定位装置的主缸体夹紧机构
CN112008548A (zh) * 2020-08-25 2020-12-01 田福来 一种夹持效果好的打磨装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137784A (en) * 1977-11-14 1979-02-06 Industrial Device Corporation Electromechanical equivalent of fluid powered cylinder
DE2909464C2 (de) * 1979-03-10 1982-10-28 Fa. Andreas Maier, 7012 Fellbach Schwenkspanner, insbesondere zum Spannen eines Werkstückes auf einem Maschinentisch einer Werkzeugmaschine
DE3215461A1 (de) * 1982-04-24 1983-11-03 Karlheinz 5800 Hagen Menkhoff Elastomer-schwenkspannzylinder mit uebersetzungsblock
DE3334401A1 (de) * 1983-09-23 1985-04-04 A. Römheld GmbH & Co KG, 6312 Laubach Spann- und stuetzeinheit fuer werkzeugmaschinen
DE3603618C1 (en) * 1986-02-06 1987-10-01 Friedhelm Hake Clamping device for use on machine tools
US4723767A (en) * 1986-08-08 1988-02-09 De-Sta-Co Division, Dover Resources, Inc. Rotary powered linear actuated clamp
US4700936A (en) * 1986-08-26 1987-10-20 Lamb Technicon Corp. Clamp mechanism
DE3638526C1 (de) * 1986-11-11 1987-07-30 Sta Co Mettallerzeugnisse Gmbh Elektromotorisch antreibbare Werkstueckspannvorrichtung

Also Published As

Publication number Publication date
ATE103226T1 (de) 1994-04-15
JPH02292145A (ja) 1990-12-03
EP0395889A2 (fr) 1990-11-07
DE59005050D1 (de) 1994-04-28
DE3911073C1 (fr) 1990-07-26
EP0395889A3 (fr) 1992-03-04

Similar Documents

Publication Publication Date Title
DE3784404T2 (de) Durch Rotation angetriebene, linear betätigte Spannzwinge.
EP0330672B1 (fr) Dispositif de serrage pour le blocage axial d'un outil, notamment d'une meule
EP2334473B1 (fr) Outil à main à blocage automatique de la broche
DE102005003615B3 (de) Presszange zum Einpressen mehrerer Kerben auf dem Umfang eines Kontaktelementes
DE3541922C1 (de) Rohrmuffenaufschraubmaschine
EP0253181A2 (fr) Mécanisme de fixation d'outils en forme de disque sur une broche de machine-outil électrique portative
DE69734079T2 (de) Elektricher Stellantrieb
DE3410154C2 (fr)
DE3638526C1 (de) Elektromotorisch antreibbare Werkstueckspannvorrichtung
EP1563956A1 (fr) Dispositif d'entraínement
DE2106933B2 (de) Vorrichtung zum Verdrehen einer Welle, insbesondere eines Ventilschafts
EP0395889B1 (fr) Dispositif de serrage de pièces
EP0802022B1 (fr) Dispositif de serrage avec renforcement mécanique d'effort
DE102007023807B4 (de) Umschaltmittel für Schrauber mit zwei Abtrieben
EP1403104B1 (fr) Barre stabilisatrice réglable pour suspension
EP1226372B1 (fr) Dispositif d'entrainement pour meuble
DE3907736C1 (en) Cutting device for cutting a web of material longitudinally
CH688133A5 (de) Spannvorrichtung fuer eine spanende Handwerkzeugmaschine, insbesondere Motorfeile.
EP2210720B1 (fr) Dispositif de fixation d'outil de rotation fonctionnant par friction
DE4025752C1 (en) Chuck for machine tool - has short threaded cylindrical block to fit into recess at back of jaw
DE69810397T2 (de) Schliess- und oder Öffnungsanordnung für Türen
DE4025745A1 (de) Spannfutter mit werkstuecklagebestimmung
DE8909589U1 (de) Vorrichtung zum Spannen von Werkstücken
DE2156012A1 (de) Verfahren und vorrichtung zum anziehen von schrauben und muttern mit motorisch angetriebenen schraubern
DE19909691A1 (de) Hand-Werkzeugmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE ES FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19920820

17Q First examination report despatched

Effective date: 19930624

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19940323

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940323

Ref country code: GB

Effective date: 19940323

Ref country code: FR

Effective date: 19940323

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940323

REF Corresponds to:

Ref document number: 103226

Country of ref document: AT

Date of ref document: 19940415

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19940330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940331

REF Corresponds to:

Ref document number: 59005050

Country of ref document: DE

Date of ref document: 19940428

EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19940323

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed