EP0510399B1 - Holder for a pressure spindle on a clamping device - Google Patents

Holder for a pressure spindle on a clamping device Download PDF

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Publication number
EP0510399B1
EP0510399B1 EP92105663A EP92105663A EP0510399B1 EP 0510399 B1 EP0510399 B1 EP 0510399B1 EP 92105663 A EP92105663 A EP 92105663A EP 92105663 A EP92105663 A EP 92105663A EP 0510399 B1 EP0510399 B1 EP 0510399B1
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EP
European Patent Office
Prior art keywords
block
holder according
pressure spindle
holder
spindle
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
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EP92105663A
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German (de)
French (fr)
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EP0510399A1 (en
Inventor
Detlef Ulle
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DESTACO Europe GmbH
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DE STA CO Metallerzeugnisse GmbH
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Publication of EP0510399A1 publication Critical patent/EP0510399A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/16Details, e.g. jaws, jaw attachments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/16Details, e.g. jaws, jaw attachments
    • B25B5/163Jaws or jaw attachments

Definitions

  • the invention relates to a holder for pressure spindles on clamping devices, in the clamping arm of which an elongated hole guide for the adjustable reception and fixing of the pressure spindle is arranged by means of fixing elements, cf. e.g. US-A-4,396,217.
  • Such pressure spindles must be provided on clamping arms of clamping devices if flat workpieces such as sheets or the like are to be clamped on a solid base.
  • the tensioning arms are provided with an elongated hole guide which is penetrated by the pressure spindle in the desired position.
  • flank washers or flank washers combined to form a U-shaped bracket are required, and in the case of two separate flank washers two nuts or in the case of a U-shaped bracket a lock nut, provided that one leg of the U-shaped Bracket is provided with a threaded hole for screwing in the pressure spindle.
  • the respective pressure spindle can be set and fixed both in the axial direction and with regard to their arrangement in the elongated hole of the clamping arm.
  • adjustment and fixability of the pressure spindle is always associated with a certain amount of fumbling, i.e. it requires a certain skill to achieve the actually desired position of the pressure spindle with respect to the clamping arm.
  • the invention has for its object to provide a holder for pressure spindles on clamping devices of the type mentioned, which consists of only one part and in which with only one element both the pressure spindle in terms of their axial fixation and the holder itself can be fixed with respect to its position in the clamping arm should be.
  • the holder which is seated in the slot guide and is designed as a block, which is anyway made of tough, limited elastic material, is elastically deformable in two respects, on the one hand in relation to the thread of the pressure spindle and on the other hand in relation to on the edges of the elongated hole guide in the tensioning arm or in relation to the tensioning arm itself.
  • the slot part extending over the entire length of the block is advantageously dimensioned with a depth that corresponds to two thirds of the height of the block, and the tapped hole in the middle of the Pressure spindle extended slot part is arranged in the upper third of the block.
  • the block can be inserted into the elongated hole guide, on the other hand, however, a tongue-like, divided upper area of the block is created, which also detects the threaded bore of the pressure spindle and which is used to press the block serves when tightening the clamping screw in the desired position of the block in the slot guide.
  • a tongue-like, divided upper area of the block is created, which also detects the threaded bore of the pressure spindle and which is used to press the block serves when tightening the clamping screw in the desired position of the block in the slot guide.
  • Under “smoothly penetrated upper part of the Block is to be understood as the part of the block that is formed by the tongue, ie the tensioning screw must of course not be connected to the tongue part by thread engagement, since otherwise this tongue part cannot be bent.
  • either the mounting hole of the tensioning screw is used formed in the tongue-like block delimited by a slot, or the clamping screw is provided under its head with a thread-free shaft part.
  • the upper guide flange is expediently smaller in cross section than the lower guide flange.
  • the holder can advantageously be designed such that the slot part delimiting the tongue-like part of the block downward is designed to be inclined at least in the area of the threaded bore of the pressure spindle toward the bottom surface of the block.
  • the tongue part is reinforced with regard to its material connection to the remaining part of the block or the connection cross section of the tongue part is enlarged and thus counteracts a risk of breakage in this critical attachment area of the tongue.
  • This holder according to the invention could also be easily produced from sufficiently elastic metallic material, but this would involve a greater manufacturing outlay.
  • the block is therefore preferably formed from injection-moldable or pourable plastic, with which the holder or the block can be produced in one work step with a corresponding mold design.
  • the fixing elements for the pressure spindle 6 are formed in the form of a block made of tough, limited elastic material provided with an upper and lower guide flange 2, 3.
  • the pressure spindle 6 and the clamping screw 7 are arranged one behind the other in parallel threaded holes 4, 5 and in the longitudinal direction of block 1, the upper part of block 1, which is penetrated smoothly by the clamping screw 7, having a cross-slot 8, the threaded holes 4 in the axial direction , 5 oriented and this intersecting slot part 8 'extends over the entire length L of the block 1.
  • the other slot part 8 ⁇ of the cross slot 8 extends from the end 9 of the block 1 remote from the spindle to the center of the threaded bore 4 of the pressure spindle 6.
  • the slot part 8 'extending over the entire length L is dimensioned with a depth T which is approximately two Third corresponds to the height H of the block 1, and the slot part 8 ⁇ which extends to the center of the threaded bore of the pressure spindle 6 is arranged in the upper third of the block.
  • this creates a tongue-like elastic upper part with the upper guide flange 2, which is also formed in two parts by the slot part 8 '.
  • the receiving bore 5 'for the clamping screw 7 in the tongue-like upper part is thread-free and has a diameter allowance in relation to the clamping screw 7 that the two tongue parts can be deformed in the direction of arrow A.
  • the pressure spindle 6 can be easily screwed out of the area of the slot part 8 'for the introduction of the block 1 into the slot guide 11 so as not to deform the block 1 in the direction of arrow A at the end 9' through the fully screwed pressure spindle 6 ' to block.
  • the pressure spindle is screwed in correspondingly far into the desired axial position relative to the holder or the clamping arm 12.
  • the clamping screw 7 is already on the not yet deformed surface 10 'of the block 1 loosely, so that the whole holder can be moved within the slot guide 11 in the desired position.
  • the two-part tongue When tightening the clamping screw 7, the two-part tongue is bent in the direction of arrow B (as said, such a bending moves in the range of tenths of a millimeter), as a result of which the upper flange 2 is pressed onto the edges of the elongated hole guide 11 or the clamping arm 12 and thus the holder is fixed in its position relative to the clamping arm 12. Since the tongue bending also affects the thread of the pressure spindle 6, because the slot part 8 ⁇ extends to the center of the threaded bore 4 of the pressure spindle, this deformation also results in the deformation Pressure spindle 6 fixed, since the internal thread of the threaded bore 4 extends to the surface 10 'of the block 1.
  • FIG. 3 The particular embodiment according to FIG. 3 is in particular intended for a holder made of metal, but this does not rule out the possibility of carrying out this two-part design of the holder also in plastic.
  • This embodiment differs from that described above in Fig. 1 essentially only in that the slot part 8 'is formed as a whole block 1 in two parts I, II separating section. 3 shows the preferred form of further development in which the two parts I, II are provided on their mutually facing surfaces F 1, F 2 in the region of the threaded bore 5 with interlocking semicircular extensions 13 and corresponding recesses 14.
  • extensions 13 and recesses 14 are not absolutely necessary, since the two parts I, II are anyway pressed onto the flanks of the elongated hole guide 11 when the pressure spindle 6 and the clamping screw 7 are screwed in, but the extensions 13 and recesses 14 enable one with respect to the threaded holes 4, 5 precise assignment of the two parts I, II even before insertion into the slot guide 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Gripping On Spindles (AREA)

Description

Die Erfindung betrifft einen Halter für Andruckspindeln an Spannvorrichtungen, in deren Spannarm eine Langlochführung für die einstellbare Aufnahme und Festlegung der Andruckspindel mittels Fixierungselementen angeordnet ist, vgl. z.B. US-A-4 396 217.The invention relates to a holder for pressure spindles on clamping devices, in the clamping arm of which an elongated hole guide for the adjustable reception and fixing of the pressure spindle is arranged by means of fixing elements, cf. e.g. US-A-4,396,217.

Derartige Andruckspindeln müssen an Spannarmen von Spannvorrichtungen vorgesehen werden, wenn flache Werkstücke, wie Bleche od. dgl. auf einer festen Unterlage festzuspannen sind. Für die Anbringung der Andruckspindeln, die sowohl in bezug auf die Längserstreckung der Spannarme als auch axial einstellbar und fixierbar sein müssen, sind die Spannarme mit einer Langlochführung versehen, die in gewünschter Stellung von der Andruckspindel durchgriffen wird. Zur einstellbaren Fixierung der Andruckspindeln sind dabei entweder zwei sogenannte Flankenscheiben oder zu einem U-förmigen Bügel zusammengefaßte Flankenscheiben erforderlich, und im Falle von zwei separaten Flankenscheiben zwei Muttern oder im Falle eines U-förmigen Bügels eine Kontermutter, sofern der eine Schenkel des U-förmigen Bügels mit einer Gewindebohrung für das Einschrauben der Andruckspindel versehen ist. Mit derartigen Fixierungselementen kann die jeweilige Andruckspindel sowohl in axialer Richtung als auch bezüglich ihrer Anordnung im Langloch des Spannarmes eingestellt und fixiert werden. Abgesehen vom Teileaufwand ist eine derartige Einstell- und Fixierbarkeit der Andruckspindel immer mit einer gewissen "Fummelei" verbunden, d.h., es erfordert ein gewisses Geschick, die tatsächlich gewünschte Stellung der Andruckspindel in bezug auf den Spannarm zu erreichen.Such pressure spindles must be provided on clamping arms of clamping devices if flat workpieces such as sheets or the like are to be clamped on a solid base. For the attachment of the pressure spindles, which must be adjustable and fixable both with respect to the longitudinal extent of the tensioning arms and axially, the tensioning arms are provided with an elongated hole guide which is penetrated by the pressure spindle in the desired position. For the adjustable fixing of the pressure spindles either two so-called flank washers or flank washers combined to form a U-shaped bracket are required, and in the case of two separate flank washers two nuts or in the case of a U-shaped bracket a lock nut, provided that one leg of the U-shaped Bracket is provided with a threaded hole for screwing in the pressure spindle. With such fixing elements, the respective pressure spindle can be set and fixed both in the axial direction and with regard to their arrangement in the elongated hole of the clamping arm. Apart from the amount of parts involved, such adjustment and fixability of the pressure spindle is always associated with a certain amount of fumbling, i.e. it requires a certain skill to achieve the actually desired position of the pressure spindle with respect to the clamping arm.

Der Erfindung liegt die Aufgabe zugrunde, einen Halter für Andruckspindeln an Spannvorrichtungen der genannten Art zu schaffen, der lediglich aus einem Teil besteht und bei dem lediglich mit einem Element sowohl die Andruckspindel bezüglich ihrer axialen Fixierung als auch der Halter selbst bezüglich seiner Stellung im Spannarm fixierbar sein soll.The invention has for its object to provide a holder for pressure spindles on clamping devices of the type mentioned, which consists of only one part and in which with only one element both the pressure spindle in terms of their axial fixation and the holder itself can be fixed with respect to its position in the clamping arm should be.

Diese Aufgabe ist mit einem Halter der eingangs genannten Art nach der Erfindung durch die im Kennzeichen des Hauptanspruches angeführten Merkmale gelöst. Vorteilhafte Weiterbildungen und praktische Ausführungsformen ergeben sich nach den Unteransprüchen.This object is achieved with a holder of the type mentioned according to the invention by the features stated in the characterizing part of the main claim. Advantageous further developments and practical embodiments result from the subclaims.

Bei dieser erfindungsgemäßen Ausbildung des Halters sind also Muttern bzw. Kontermuttern entbehrlich, und das Festspannen des Halters gleichzeitig mit der axialen Festlegung der Andruckspindel erfolgt lediglich mit einer parallel zur Andruckspindel orientierten Spannschraube, wodurch die Gefahr einer unerwünschten axialen Verstellung der Andruckspindel, aber auch die Gefahr einer Verschiebung der Stellung der Andruckspindel in Längsrichtung des Spannarmes beim Anziehen von Muttern behoben ist, da einerseits auf die Andruckspindel durch Reibung kein Drehmoment mehr ausgeübt werden kann und auch keine Verschiebungsgefahr für den ganzen Kalter mehr besteht, da die Spannschraube senkrecht zum Halter bzw. zum Spannarm, in dem der Halter sitzt, festgeschraubt wird.In this embodiment of the holder according to the invention, nuts or locknuts are therefore unnecessary, and the holder is only tightened simultaneously with the axial fixing of the pressure spindle with a clamping screw oriented parallel to the pressure spindle, which increases the risk of undesired axial adjustment of the pressure spindle, but also the danger a shift in the position of the pressure spindle in the longitudinal direction of the clamping arm when tightening nuts is eliminated, since on the one hand no torque can be exerted on the pressure spindle due to friction and there is no longer any risk of displacement for the entire cold, since the clamping screw is perpendicular to the holder or Clamping arm, in which the holder sits, is screwed tight.

Durch die speziell ausgebildete Kreuzschlitzung wird der in der Langlochführung sitzende und als Block ausgebildete Halter, der sowieso aus zähem, begrenzt elastischem Material gebildet ist, in zweifacher Hinsicht elastisch deformierbar, und zwar zum einen in bezug auf das Gewinde der Andruckspindel und zum anderen in bezug auf die Ränder der Langlochführung im Spannarm bzw. in bezug auf den Spannarm selbst. Bezüglich dieser Elastizitätsvermittlung ist der über die ganze Länge des Blockes erstreckende Schlitzteil vorteilhaft mit einer Tiefe bemessen, die zwei Drittel der Höhe des Blockes entspricht, und der bis Mitte Gewindebohrung der Andruckspindel erstreckte Schlitzteil ist im oberen Drittel des Blockes angeordnet. Dadurch kann, was im einzelnen noch näher erläutert wird, einerseits der Block überhaupt erst in die Langlochführung eingebracht werden, zum anderen entsteht aber ein zungenartiger, in sich geteilter oberer Bereich des Blockes, der die Gewindebohrung der Andruckspindel mit erfaßt und der zum Anpressen des Blockes beim Festziehen der Spannschraube in gewünschter Stellung des Blockes in der Langlochführung dient. Unter "glatt durchgriffenem Oberteil des Blockes" ist dabei der Teil des Blockes zu verstehen, der von der Zunge gebildet wird, d.h., die Spannschraube darf natürlich nicht durch Gewindeeingriff mit dem Zungenteil in Verbindung stehen, da sonst keine Verbiegung dieses Zungenteiles erfolgen kann. Dafür ist entweder die Aufnahmebohrung der Spannschraube im vom einen Schlitz begrenzten, zungenartigen Blockes gewindefrei ausgebildet oder die Spannschraube ist unter ihrem Kopf mit einem gewindefreien Schaftteil versehen.Due to the specially designed cross recess, the holder, which is seated in the slot guide and is designed as a block, which is anyway made of tough, limited elastic material, is elastically deformable in two respects, on the one hand in relation to the thread of the pressure spindle and on the other hand in relation to on the edges of the elongated hole guide in the tensioning arm or in relation to the tensioning arm itself. With regard to this elasticity imparting, the slot part extending over the entire length of the block is advantageously dimensioned with a depth that corresponds to two thirds of the height of the block, and the tapped hole in the middle of the Pressure spindle extended slot part is arranged in the upper third of the block. As a result, what will be explained in more detail below, on the one hand the block can be inserted into the elongated hole guide, on the other hand, however, a tongue-like, divided upper area of the block is created, which also detects the threaded bore of the pressure spindle and which is used to press the block serves when tightening the clamping screw in the desired position of the block in the slot guide. Under "smoothly penetrated upper part of the Block "is to be understood as the part of the block that is formed by the tongue, ie the tensioning screw must of course not be connected to the tongue part by thread engagement, since otherwise this tongue part cannot be bent. For this purpose, either the mounting hole of the tensioning screw is used formed in the tongue-like block delimited by a slot, or the clamping screw is provided under its head with a thread-free shaft part.

Um die Einführbarkeit des Blockes in die Langlochführung zu erleichtern ist zweckmäßig der obere Führungsflansch im Querschnitt kleiner bemessen als der untere Führungsflansch. Bezüglich des einen Schlitzteiles kann im übrigen der Halter vorteilhaft derart ausgebildet sein, daß der den zungenartigen Teil des Blockes nach unten begrenzenden Schlitzteil mindestens im Bereich der Gewindebohrung der Andruckspindel zur Bodenfläche des Blockes hin geneigt verlaufend ausgebildet ist. Dadurch ist das Zungenteil bezüglich seiner Materialverbindung zum restlichen Teil des Blockes verstärkt bzw. der Anschlußquerschnitt des Zungenteiles vergrößert und damit einer Bruchgefahr in diesem kritischen Ansatzbereich der Zunge entgegengewirkt.In order to make it easier to insert the block into the slot guide, the upper guide flange is expediently smaller in cross section than the lower guide flange. With regard to the one slot part, the holder can advantageously be designed such that the slot part delimiting the tongue-like part of the block downward is designed to be inclined at least in the area of the threaded bore of the pressure spindle toward the bottom surface of the block. As a result, the tongue part is reinforced with regard to its material connection to the remaining part of the block or the connection cross section of the tongue part is enlarged and thus counteracts a risk of breakage in this critical attachment area of the tongue.

Dieser erfindungsgemäße Halter ließe sich zwar ohne weiteres auch aus ausreichend elastischem metallischen Material herstellen, was allerdings mit einem größeren Fertigungsaufwand verbunden wäre. Bevorzugt wird deshalb der Block aus spritz- oder gießbarem Kunststoff gebildet, mit dem sich der Halter bzw. der Block in einem Arbeitsgang bei entsprechender Formwerkzeugsgestaltung herstellen läßt.This holder according to the invention could also be easily produced from sufficiently elastic metallic material, but this would involve a greater manufacturing outlay. The block is therefore preferably formed from injection-moldable or pourable plastic, with which the holder or the block can be produced in one work step with a corresponding mold design.

Die angesprochenen elastischen Deformationen entsprechender Blockteile in bezug auf die Festlegung des Blockes selbst in der Langlochführung und auch in bezug auf die Festlegung der Andruckspindel bewegen sich dabei lediglich im Bereich von zehntel Millimeter.The mentioned elastic deformations of corresponding block parts with regard to the fixing of the block itself in the slot guide and also with regard to the fixing of the pressure spindle are only in the range of tenths of a millimeter.

Der erfindungsgemäße Halter und eine weitere, besondere Ausführungsform werden nachfolgend anhand der zeichnerischen Darstellung von Ausführungsbeispielen näher erläutert.The holder according to the invention and a further, special embodiment are explained in more detail below with the aid of exemplary embodiments.

Es zeigt schematisch

Fig. 1
perspektivisch den Halter mit der Andruckspindel und der Spannschraube;
Fig. 2
die Anordnung des Halters in einer speziellen Ausführungsform des Spannarmes einer ansonsten nicht dargestellten Spannvorrichtung und
Fig. 3
perspektivisch eine andere Ausführungsform des Halters.
It shows schematically
Fig. 1
perspective the holder with the pressure spindle and the clamping screw;
Fig. 2
the arrangement of the holder in a special embodiment of the clamping arm of an otherwise not shown clamping device and
Fig. 3
perspective another embodiment of the holder.

Wie aus Fig. 1 ersichtlich, sind die Fixierungselemente für die Andruckspindel 6 in Form eines mit einem oberen und unteren Führungsflansch 2, 3 versehenen Blockes aus zähem, begrenzt elastischem Material gebildet. Im Block 1 sind in zueinander parallelen Gewindebohrungen 4, 5 und in Längsrichtung des Blockes 1 hintereinander die Andruckspindel 6 und die Spannschraube 7 angeordnet, wobei das von der Spannschraube 7 glatt durchgriffene Oberteil des Blockes 1 eine Kreuzschlitzung 8 aufweist, deren in Achsrichtung der Gewindebohrungen 4, 5 orientierter und diese schneidender Schlitzteil 8′ über die ganze Länge L des Blockes 1 erstreckt ist. Der andere Schlitzteil 8˝ der Kreuzschlitzung 8 erstreckt sich dabei vom spindelfernen Ende 9 des Blockes 1 aus bis zur Mitte der Gewindebohrung 4 der Andruckspindel 6. Der über die ganze Länge L erstreckte Schlitzteil 8′ ist dabei mit einer Tiefe T bemessen, die etwa zwei Drittel der Höhe H des Blockes 1 entspricht, und der bis Mitte Gewindebohrung der Andruckspindel 6 erstreckt Schlitzteil 8˝ ist im oberen Drittel des Blockes angeordnet. Wie ersichtlich, entsteht dadurch ein zungenartig elastisches Oberteil mit dem oberen Führungsflansch 2, das zudem durch das Schlitzteil 8′ zweigeteilt ausgebildet ist. Die Aufnahmebohrung 5′ für die Spannschraube 7 im zungenartigen Oberteil ist dabei gewindefrei ausgebildet und hat dabei in bezug auf die Spannschraube 7 eine derartige Durchmesserzugabe, daß die beiden Zungenteile in Pfeilrichtung A deformiert werden können. Dadurch ist es möglich, den Block 1 trotz seines Flansches 2 in die Langlochführung 11 des Spannarmes 12 (siehe Fig. 2) einzuführen, wobei es nur eines relativ geringen Nachdruckes bedarf, um das andere Ende 9′ des Blockes 1 ebenfalls eindrücken zu können, aus welchem Grunde das Schlitzteil 8′ über die ganze Länge L des Blockes 1 erstreckt ist. Um die Einführbarkeit in die Langlochführung 11 weiter zu erleichtern, ist zweckmäßig der obere Führungsflansch 2 im Querschnitt kleiner gehalten als der untere Führungsflansch 3. Statt der gewindefreien Ausführung der Aufnahmebohrung 5′ im Zungenbereich kann auch, wie in Fig. 1 an der dort dargestellten Spannschraube, diese mit einem gewindefreien Schaftteil 7˝ (gestrichelt angedeutet) versehen sein.As can be seen from FIG. 1, the fixing elements for the pressure spindle 6 are formed in the form of a block made of tough, limited elastic material provided with an upper and lower guide flange 2, 3. In block 1, the pressure spindle 6 and the clamping screw 7 are arranged one behind the other in parallel threaded holes 4, 5 and in the longitudinal direction of block 1, the upper part of block 1, which is penetrated smoothly by the clamping screw 7, having a cross-slot 8, the threaded holes 4 in the axial direction , 5 oriented and this intersecting slot part 8 'extends over the entire length L of the block 1. The other slot part 8˝ of the cross slot 8 extends from the end 9 of the block 1 remote from the spindle to the center of the threaded bore 4 of the pressure spindle 6. The slot part 8 'extending over the entire length L is dimensioned with a depth T which is approximately two Third corresponds to the height H of the block 1, and the slot part 8˝ which extends to the center of the threaded bore of the pressure spindle 6 is arranged in the upper third of the block. As can be seen, this creates a tongue-like elastic upper part with the upper guide flange 2, which is also formed in two parts by the slot part 8 '. The receiving bore 5 'for the clamping screw 7 in the tongue-like upper part is thread-free and has a diameter allowance in relation to the clamping screw 7 that the two tongue parts can be deformed in the direction of arrow A. This makes it possible to block 1 in spite of its flange 2 in the slot guide 11 of the clamping arm 12 (see Fig. 2) to introduce, requiring only a relatively small emphasis to also be able to press in the other end 9 'of the block 1, for which reason the slot part 8' extends over the entire length L of the block 1. In order to further facilitate the insertion into the slot guide 11, the upper guide flange 2 is expediently kept smaller in cross section than the lower guide flange 3. Instead of the thread-free design of the receiving bore 5 'in the tongue area, as in FIG. 1, on the clamping screw shown there , this be provided with a thread-free shaft part 7˝ (indicated by dashed lines).

Ebenfalls nur gestrichelt angedeutet ist die Ausführungsform, bei der der den zungenartigen Teil des Blockes 1 nach unten begrenzende Schlitzteil 8˝ im Bereich der Gewindebohrung 4 der Andruckspindel 6 zur Bodenfläche 10 des Blockes 1 hin geneigt verlaufend ausgebildet ist.The embodiment in which the slot part 8 'which delimits the tongue-like part of the block 1 downward in the region of the threaded bore 4 of the pressure spindle 6 is also inclined to the bottom surface 10 of the block 1 and is only indicated by dashed lines.

Soweit überhaupt erforderlich, kann für die Einführung des Blockes 1 in die Langlochführung 11 die Andruckspindel 6 ohne weiteres aus dem Bereich des Schlitzteiles 8′ herausgeschraubt werden, um nicht durch die voll eingeschraubte Andruckspindel 6 die Deformation des Blockes 1 in Pfeilrichtung A am Ende 9′ zu blockieren. Ist der Block 1 erst einmal eingesetzt, wird die Andruckspindel bis auf die gewünschte axiale Stellung zum Halter bzw. zum Spannarm 12 entsprechend weit eingeschraubt. Die Spannschraube 7 sitzt dabei bereits auf der noch nicht deformierten Oberfläche 10′ des Blockes 1 locker auf, so daß dadurch der ganze Halter innerhalb der Langlochführung 11 in die gewünschte Stellung verschoben werden kann. Beim Festziehen der Spannschraube 7 wird dabei die zweigeteilte Zunge in Pfeilrichtung B verbogen (wie gesagt, bewegt sich eine solche Verbiegung im Bereich von zehntel Millimetern), wodurch einmal der obere Flansch 2 auf die Ränder der Langlochführung 11 bzw. den Spannarm 12 aufgepreßt und damit der Halter in seiner Stellung zum Spannarm 12 fixiert wird. Da sich die Zungenverbiegung auch noch im Bereich des Gewindes der Andruckspindel 6 auswirkt, weil sich der Schlitzteil 8˝ bis Mitte Gewindebohrung 4 der Andruckspindel erstreckt, wird gleichzeitig durch diese Deformation auch die Andruckspindel 6 fixiert, da sich das Innengewinde der Gewindebohrung 4 bis zur Oberfläche 10′ des Blockes 1 erstreckt.If at all necessary, the pressure spindle 6 can be easily screwed out of the area of the slot part 8 'for the introduction of the block 1 into the slot guide 11 so as not to deform the block 1 in the direction of arrow A at the end 9' through the fully screwed pressure spindle 6 ' to block. Once the block 1 has been inserted, the pressure spindle is screwed in correspondingly far into the desired axial position relative to the holder or the clamping arm 12. The clamping screw 7 is already on the not yet deformed surface 10 'of the block 1 loosely, so that the whole holder can be moved within the slot guide 11 in the desired position. When tightening the clamping screw 7, the two-part tongue is bent in the direction of arrow B (as said, such a bending moves in the range of tenths of a millimeter), as a result of which the upper flange 2 is pressed onto the edges of the elongated hole guide 11 or the clamping arm 12 and thus the holder is fixed in its position relative to the clamping arm 12. Since the tongue bending also affects the thread of the pressure spindle 6, because the slot part 8˝ extends to the center of the threaded bore 4 of the pressure spindle, this deformation also results in the deformation Pressure spindle 6 fixed, since the internal thread of the threaded bore 4 extends to the surface 10 'of the block 1.

Die besondere Ausführungsform gemäß Fig. 3 ist zwar insbesondere für einen Halter aus Metall bestimmt, was jedoch nicht ausschließt, diese zweiteilige Ausbildung des Halters auch in Kunststoff auszuführen. Diese Ausführungsform unterscheidet sich von der vorbeschriebenen nach Fig. 1 im wesentlichen nur dadurch, daß der Schlitzteil 8′ als den ganzen Block 1 in zwei Teile I, II trennender Schnitt ausgebildet ist. Dargestellt ist dabei in Fig. 3 die bevorzugte Weiterbildungsform, bei der die beiden Teile I, II an ihren gegeneinandergerichteten Flächen F₁, F₂ im Bereich der Gewindebohrung 5 mit ineinandergreifenden halbkreisförmigen Fortsätzen 13 und entsprechenden Ausnehmungen 14 versehen sind.The particular embodiment according to FIG. 3 is in particular intended for a holder made of metal, but this does not rule out the possibility of carrying out this two-part design of the holder also in plastic. This embodiment differs from that described above in Fig. 1 essentially only in that the slot part 8 'is formed as a whole block 1 in two parts I, II separating section. 3 shows the preferred form of further development in which the two parts I, II are provided on their mutually facing surfaces F 1, F 2 in the region of the threaded bore 5 with interlocking semicircular extensions 13 and corresponding recesses 14.

Diese Fortsätze 13 und Ausnehmungen 14 sind zwar nicht zwingend notwendig, da die beiden Teile I, II bei eingeschraubter Andruckspindel 6 und Spannschraube 7 sowieso an die Flanken der Langlochführung 11 angedrückt werden, die Fortsätze 13 und Ausnehmungen 14 ermöglichen jedoch eine bezüglich der Gewindebohrungen 4, 5 lagegenaue Zuordnung der beiden Teile I, II bereits vor dem Einfügen in die Langlochführung 11.These extensions 13 and recesses 14 are not absolutely necessary, since the two parts I, II are anyway pressed onto the flanks of the elongated hole guide 11 when the pressure spindle 6 and the clamping screw 7 are screwed in, but the extensions 13 and recesses 14 enable one with respect to the threaded holes 4, 5 precise assignment of the two parts I, II even before insertion into the slot guide 11.

Claims (10)

  1. A holder for pressure spindles (6) on clamping devices in whose clamping arm (12) is provided an oblong hole guide (11) for the adjustable accommodation and fixation of the pressure spindle (6) by means of fixing elements, characterized in that the fixing elements are in the form of a block (1) of tough material flexible to a certain extent and privided with top and bottom guiding flanges (2,3) in which block are provided in the longitudinal direction of block (1) in series arrangement within parallel tapholes bores (4,5) the pressure spindle (6) and a clamping bolt (7), with the upper portion of the block (1) smoothly traversed by the clamping bolt (7) including a cross slit (8) whose slitted portion (8′) oriented in the axial direction of the tapholes (4,5) and intersecting the same extends across the entire length (L) of block (1) while the other slitted portion (8˝) thereof extends from the end (9) of block (1) facing away from the spindle midway of the taphole (4) of the pressure spindle (6).
  2. A holder according to claim 1,
    characterized in that the slitted portion (8′) extended across the entire length (L) is of a depth (T) which corresponds to two thirds of the height (H) of the block (1).
  3. A holder according to claims 1 or 2,
    characterized in that the slitted portion (8˝) extending midway of the taphole (4) of the pressure spindle (6) is provided in the upper third of the block.
  4. A holder according to any one of claims 1 to 3,
    characterized in that the accommodating bore (5′) of the clamping bolt (7) is of an unthreaded configuration in the tongue-shaped portion of block (1) confined by slitted portion (8˝).
  5. A holder according to any one of claims 1 to 3,
    characterized in that the clamping bolt (7) underneath its head (7′) is provided with an unthreaded shaft portion (7˝).
  6. A holder according to any one of claims 1 to 5,
    characterized in that the upper guiding flange (2) is of a smaller cross-section than the bottom guiding flange (3).
  7. A holder according to any one of claims 1 to 6
    characterized in that the slitted portion (8˝) downwardly confining the tongue-shaped portion of the block (1) at least in the area of the taphole (4) of the pressure spindle (6) is formed to extend at an inclination to the bottom face (10) of the block (1).
  8. A holder according to any one of claims 1 to 8,
    characterized in that the block (1) is formed of injection-mouldable or castable plastic material.
  9. A holder according to any one of claims 3 to 7,
    characterized in that the slitted portion (8′) is formed as a section dividing the entire block (1) into two parts (I,II).
  10. A holder according to claim 9,
    characterized in that the two parts (I,II) on the opposing faces (F₁, F₂) in the area of the taphole (5) are provided with meshing semi-circular extensions (13) and corresponding recesses (14).
EP92105663A 1991-04-20 1992-04-02 Holder for a pressure spindle on a clamping device Expired - Lifetime EP0510399B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9104864U 1991-04-20
DE9104864U DE9104864U1 (en) 1991-04-20 1991-04-20 Holder for pressure spindles on clamping devices

Publications (2)

Publication Number Publication Date
EP0510399A1 EP0510399A1 (en) 1992-10-28
EP0510399B1 true EP0510399B1 (en) 1994-07-27

Family

ID=6866524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105663A Expired - Lifetime EP0510399B1 (en) 1991-04-20 1992-04-02 Holder for a pressure spindle on a clamping device

Country Status (3)

Country Link
EP (1) EP0510399B1 (en)
DE (2) DE9104864U1 (en)
ES (1) ES2059173T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412723U1 (en) * 1994-08-06 1994-09-29 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Clamping arm for clamping devices
DE102005035846A1 (en) 2005-07-30 2007-02-08 GM Global Technology Operations, Inc., Detroit Pressure device for a clamping system
CN102000998B (en) * 2010-11-12 2012-07-04 吴江市菀坪镙丝厂 Round bar processing tool
CN103586707B (en) * 2013-10-25 2016-08-24 安徽机电职业技术学院 A kind of robot wrist's connector bore hole special fixture
CN108788806A (en) * 2018-08-22 2018-11-13 无锡雪浪环境科技股份有限公司 Recessing special fixture

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1475027A1 (en) * 1960-12-21 1969-05-08 Hanfland Curt H Lock nut
DE2228062A1 (en) * 1972-06-09 1973-12-20 Volkswagenwerk Ag CLAMP NUT
US4396217A (en) * 1981-04-28 1983-08-02 Hodgson R W Clamp hand protector
US4658686A (en) * 1985-07-31 1987-04-21 Shopsmith, Inc. Miter gage
DE3922858A1 (en) * 1989-07-12 1991-01-17 Bergische Achsen Kotz Soehne WHEEL BEARING FOR TRAILER AXLES

Also Published As

Publication number Publication date
DE59200311D1 (en) 1994-09-01
DE9104864U1 (en) 1991-06-06
EP0510399A1 (en) 1992-10-28
ES2059173T3 (en) 1994-11-01

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