EP2998068A1 - Étau de centrage dote de mors a changement rapide - Google Patents

Étau de centrage dote de mors a changement rapide Download PDF

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Publication number
EP2998068A1
EP2998068A1 EP15175930.5A EP15175930A EP2998068A1 EP 2998068 A1 EP2998068 A1 EP 2998068A1 EP 15175930 A EP15175930 A EP 15175930A EP 2998068 A1 EP2998068 A1 EP 2998068A1
Authority
EP
European Patent Office
Prior art keywords
quick
jaws
change jaws
change
center tensioner
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.)
Granted
Application number
EP15175930.5A
Other languages
German (de)
English (en)
Other versions
EP2998068B1 (fr
Inventor
Bernhard Schwärzler
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.)
Georg Kesel GmbH and Co KG
Original Assignee
Georg Kesel GmbH and 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 Georg Kesel GmbH and Co KG filed Critical Georg Kesel GmbH and Co KG
Publication of EP2998068A1 publication Critical patent/EP2998068A1/fr
Application granted granted Critical
Publication of EP2998068B1 publication Critical patent/EP2998068B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/12—Arrangements for positively actuating jaws using screws with provision for disengagement
    • B25B1/125—Arrangements for positively actuating jaws using screws with provision for disengagement with one screw perpendicular to the jaw faces
    • 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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the 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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2489—Slideways

Definitions

  • the present invention relates to a center tensioner with quick change jaws.
  • machine vices In order to hold workpieces safely and precisely and to be able to machine, for example, in machine tools, machining centers, 5-axis milling or drilling machines, machine vices are usually used, which can also have a power transmission. These machine vices also include centering or centering vise, in which two clamping jaws are guided by means of a spindle in a common base body and are centrally movable toward or away from each other. To be able to adapt such a center tensioner quickly to different sized workpieces, his jaws are often interchangeable, in particular rotatable.
  • the DE 10 2010 047 380 B3 a linear mechanical quick release lock for locking and unlocking compatible clamping devices, where the jaw consists of a base and a top.
  • the lower part has at least two, on a plane in one axis, transversely to the clamping direction, successively and sublime molded locking elements in dovetail shape, which serve for connection to the upper part.
  • This has on a side facing the lower part of two correspondingly shaped and arranged recesses, which are either open end on a front side of the upper part or ending in a locking element larger insertion opening, so that the upper part placed flat on the lower part and by linear displacement locking means and recess in Intervention can be brought together.
  • a releasing displacement is prevented by a blocking means pivotable in front of the upper part.
  • a clamping jaw upper part (interchangeable insert) on a clamping jaw lower part (carrier jaw), which is lockably guided pivotably on the clamping jaw lower part, and which can be removed upwardly out of the carrier jaw.
  • the exchange insert on its side facing the support jaw two lugs which engage in corresponding recesses of the support jaw and on which the pivot axis is formed by a pressure pin passing through them.
  • the present invention therefore has the task of specifying a structurally simple and pollution-prone quick change clamping jaws.
  • a center tensioner having a base body, two quick change jaws arranged thereon and an adjusting device arranged on the base body and acting on the quick change jaws, characterized in that the base body has a top side facing the quick change jaw cross-section larger area than on its opposite this underside and has each quick change jaws wraparound for this area.
  • a one-piece clamping jaws can be given with great advantage, eliminating the susceptibility to fouling two- or multi-part jaws, as well as the construction is simplified.
  • Umgriff and corresponding Umgreif Scheme represent a secure connection that is free from tilting moments of any kind.
  • wrapper and quick change jaws are integrally formed, alternatively hinged together.
  • the first variant is preferred because it can be dispensed with a joint and its protection against unwanted opening.
  • the region is formed as two opposing and mutually pioneering webs, wherein the webs are extending in the longitudinal direction of the center tensioner.
  • These webs are inventively formed on the side walls of the body, spaced or not to the top.
  • the webs may be continuous or longitudinally formed single or multiple interrupted. According to the invention, its cross-sectional area is approximately square or rectangular or polygonal or rounded, preferably a substantially square cross-sectional area with a radius in the transition of the sides.
  • the webs may be formed according to the invention in particular hardened, preferably they are made of the same material as the body.
  • the enclosures of the quick-change jaws are frontally open, so that the quick-change jaws in the longitudinal direction of the center tensioner on These are pushed or removed from this, with great advantage extremely easy handling of the device ensures:
  • the quick change jaws can be easily withdrawn or pushed by an operator to the rear, or front of the body. This allows the operator to replace one quick-change jaw with another with a handle in just a few seconds and quickly restore the operational capability of the center tensioner.
  • Another advantage is the embodiment of the invention, according to which the base body between the two quick-change jaws to their largest spacing from each other has a closed surface.
  • the tensioner according to the invention is particularly long without cleaning used.
  • the webs are formed with their top side in alignment with the surface of the base body.
  • the quick-change jaws are designed to be lockable, in particular a releasable locking device for direct or indirect locking is provided on the adjusting device.
  • a locking device ensures the operability of the device by allowing it to safely initiate the clamping forces on the jaws in the body.
  • the locking device is formed by a lateral through hole in the quick-change jaws, a passing through this pin with manipulation means and engaging end and an engagement end on the adjusting device, wherein engagement and engagement end are positively and / or non-positively engaging with each other.
  • Fig. 1 shows a perspective view of an embodiment of the invention Zentrierspanners 1 with main body 2 and two quick-change jaws 3.
  • the main body 2 is received in a plate 17, as required for automated workpiece change in series production.
  • the base body 2 shows on its visible front side a cover plate 18, interspersed by a drive connection 19 for the invisible, inside the body protected adjustment device arranged 4.
  • the quick change jaws 3 have in this embodiment, a two-stage surface with a first workpiece support surface 20 and one of these superior Stop 21 on.
  • Fig. 1 shows a perspective view of an embodiment of the invention Zentrierspanners 1 with main body 2 and two quick-change jaws 3.
  • the main body 2 is received in a plate 17, as required for automated workpiece change in series production.
  • the base body 2 shows on its
  • quick change jaws 3 is visible from the outside visible part of the locking device 11.
  • These manipulation means 14 are formed at one end of a pin 13, which passes through the quick-change jaws 3 to the adjusting device.
  • the quick-change jaws 3 can be easily removed from the main body in the longitudinal direction of the device, or defer, as soon as the locking device has been solved. Thereafter, an exchange can be made against differently shaped quick-change jaws. According to the invention, the original quick-change jaws 3 rotated by 180 ° can be postponed again, so that there are different clamping options with the same quick-change jaws.
  • Fig. 2 shows a cross section along the line AA Fig. 1 , so that the locking device 11 is clearly visible, which consists of several parts.
  • the main body 2 has two webs pointing away from each other 9, which are integrally formed on the upper side 5 and integrally formed with the base body 2. Their cross-sectional area is approximately square or slightly rectangular, namely higher than wide. These webs 9 are each encompassed by a wrap-around 8 of the quick-change jaw 3.
  • the edges of the webs 9 in this case have either a radius 22 or a chamfer 22, each of which in particular facilitate the removal and postponement of the quick-change jaws 3 on the base body 2, but also improve their gliding.
  • Webs 9 and body 2 are made in one piece from the same material.
  • the adjusting device 4 is arranged protected from environmental influences.
  • the adjusting device 4 is in Fig. 3 shown clearly, at her the quick-change jaws 3 are locked.
  • the locking device 11 used for this purpose has a through hole 12 which passes through the quick-change jaws 3 laterally to its center region.
  • a pin 13 is guided sealed, which has a manipulation means 14 at one end, here a hexagon socket. Its opposite second end is formed as an engagement 15, here as a cone.
  • Pin 13 and through hole 12 have corresponding threads.
  • the engaging end 15 engages upon rotation of the pin 13 in an engaging end 16, which is designed here as a tapered bore in a locking block 25.
  • the locking block 25 is clamped in this embodiment by means of a spring, not shown, against the quick change jaws 3 and thus leads to its operative connection with the spindle 23 of the adjusting device 4. From the illustrated working position of the center tensioner 1, the jaw change is made possible by the fact that the pin 13 is screwed , so that its engaging 15 passes deeper into the tapered bore of the engagement end 16 and thereby lifts the locking block 25 up against the spring force of the adjusting device 4. Once the locking block 25 is disengaged, that is sufficiently raised, the quick-change jaws 3 is removable from the body, together with the locking block secured to it 25.
  • the manipulating means 14 would be troughs formed in accordance with an operator's finger or the like.
  • the pressing would take place against a counterforce, for example a spring.
  • Fig. 3 shows a longitudinal section along the line BB Fig. 1 and thus the internal structure of the adjusting device 4. This is taken up lengthwise in the base body 2 and closed at their end faces to the outside in each case by a cover plate 18.
  • the spindle 23 acts via corresponding threads on a carriage 24 which has grooves 26 on its upper side into which a web 27 of the locking block 25 is engaged.
  • the Quick change jaws 3 by rotation of the spindle 23 moves relative to each other.
  • the locking block 25 can be raised by means of the pin 13 until its web 27 comes out of engagement with the groove 26.
  • the quick-change jaws 3 have a correspondingly large recess in its interior.
  • the quick change jaws 3 can then either be withdrawn and exchanged for another or be moved to engage in one of the other grooves 26, so that can be easily adjusted in stages with the centering clamp achievable maximum clamping spans. Shown here are three stages (three grooves), but according to the invention, fewer or more stages may be provided.
  • the area between the quick-change jaws 3 is formed by a closed surface 10, which closes the interior of the clamping device to the outside and thus enables a high susceptibility to contamination. Even in the illustrated maximum span of the device, the surface is closed. Since the locking device 11 is arranged inside, the penetration of dust, dirt or coolant lubricants is virtually eliminated, the device is very safe.
  • Fig. 4 shows an inventive alternative to the described combination of pin 13 with taper and conical bore in the locking block 25. Shown is a pin 13 with an engagement end 15 which is formed in the manner of a worm gear. In this case, it would be possible to dispense with a spring force, provided that it is ensured that the pin 13 can not come loose unintentionally. Quite generally, according to the invention, any assembly can be used that enables axial-radial displacement conversion and whose final states can be locked. For better clarity contains Fig. 4 two rotational states of the Pin 13, namely a raised and a lowered state of the locking block 25th
  • the invention allows with great advantage a rapid adjustment of the span of the Zentrierspanners with only one hand, namely, for example, only a quarter turn on the pin 13 with the one and the position changing the so dissolved quick-change jaw 3 with the other hand in a few seconds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
EP15175930.5A 2014-08-19 2015-07-08 Étau de centrage doté de mors a changement rapide Not-in-force EP2998068B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014111802.2A DE102014111802A1 (de) 2014-08-19 2014-08-19 Zentrumsspanner mit Schnellwechselbacken

Publications (2)

Publication Number Publication Date
EP2998068A1 true EP2998068A1 (fr) 2016-03-23
EP2998068B1 EP2998068B1 (fr) 2017-09-13

Family

ID=53539577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15175930.5A Not-in-force EP2998068B1 (fr) 2014-08-19 2015-07-08 Étau de centrage doté de mors a changement rapide

Country Status (2)

Country Link
EP (1) EP2998068B1 (fr)
DE (1) DE102014111802A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018117100A1 (de) 2017-08-30 2019-02-28 Georg Kesel Gmbh & Co. Kg Spannsystem
CN115091234A (zh) * 2022-07-11 2022-09-23 容德精机（江苏）机床有限公司 一种机床用可调节板材固定装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020101062B4 (de) * 2020-01-17 2021-08-12 Lang Technik Gmbh Werkstückspannvorrichtung mit Kopplungskörper zwischen Klemmkörper und Gewindespindel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004004636U1 (de) * 2004-03-25 2004-05-27 Hico Himmel & Co Kg Zentrierspannvorrichtung
DE102010047380B3 (de) 2010-10-05 2011-11-24 Lang Technik Gmbh Linearer mechanischer Schnellverschluß
DE102012112755A1 (de) * 2012-12-20 2014-06-26 Gressel Ag Zentrisch-Spannvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3420660A1 (de) * 1984-06-02 1985-12-05 Johann 7209 Gosheim Spreitzer Zentrierkoerper fuer die montage einer mehrteiligen bolzenartig ausgebildeten zentrier- und spannschrauben-vorrichtung
US6568694B1 (en) * 2002-07-12 2003-05-27 Phillip A. White Adjustable workholding jaw assemblies
DE20319326U1 (de) * 2003-12-12 2004-03-04 Krämer, Franz Vorrichtung zum kraftschlüssigen Ausrichten und/oder Fixieren bzw. Festmachen eines Werkstücks oder eines sonstigen Gegenstandes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004004636U1 (de) * 2004-03-25 2004-05-27 Hico Himmel & Co Kg Zentrierspannvorrichtung
DE102010047380B3 (de) 2010-10-05 2011-11-24 Lang Technik Gmbh Linearer mechanischer Schnellverschluß
DE102012112755A1 (de) * 2012-12-20 2014-06-26 Gressel Ag Zentrisch-Spannvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018117100A1 (de) 2017-08-30 2019-02-28 Georg Kesel Gmbh & Co. Kg Spannsystem
DE102018117100B4 (de) 2017-08-30 2019-08-01 Georg Kesel Gmbh & Co. Kg Spannsystem
CN115091234A (zh) * 2022-07-11 2022-09-23 容德精机（江苏）机床有限公司 一种机床用可调节板材固定装置

Also Published As

Publication number Publication date
EP2998068B1 (fr) 2017-09-13
DE102014111802A1 (de) 2016-02-25

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