EP0115474B1 - Accessory device for machine vices - Google Patents

Accessory device for machine vices Download PDF

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Publication number
EP0115474B1
EP0115474B1 EP19840810047 EP84810047A EP0115474B1 EP 0115474 B1 EP0115474 B1 EP 0115474B1 EP 19840810047 EP19840810047 EP 19840810047 EP 84810047 A EP84810047 A EP 84810047A EP 0115474 B1 EP0115474 B1 EP 0115474B1
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EP
European Patent Office
Prior art keywords
individual
pressure member
clamping
additional device
pressure
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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
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EP19840810047
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German (de)
French (fr)
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EP0115474A2 (en
EP0115474A3 (en
Inventor
Roger Gloor
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Individual
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Individual
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Priority to AT84810047T priority Critical patent/ATE22671T1/en
Publication of EP0115474A2 publication Critical patent/EP0115474A2/en
Publication of EP0115474A3 publication Critical patent/EP0115474A3/en
Application granted granted Critical
Publication of EP0115474B1 publication Critical patent/EP0115474B1/en
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    • 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
    • B25B1/241—Construction of the jaws characterised by surface features or material
    • B25B1/2415—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece
    • B25B1/2421—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece the parts having a linear movement

Definitions

  • the invention relates to an additional device for a machine vice provided with two clamping jaws, the device comprising, in a housing, piston-like, sealed pressure bodies which can be set automatically in the housing against the restoring force of a displaceable hydraulic fluid with respect to the workpiece to be clamped.
  • a device which is designed for positioning workpieces between the clamping jaws of a machine vice.
  • This device comprises a housing block with a plurality of cylindrical pressure bodies, which are arranged in series and opposite one another.
  • the pressure bodies each have a conical or rounded head and are arranged in appropriately designed recesses which are connected to one another by ducts and are adjustable in a piston-like manner against the restoring force of a hydraulic fluid located in the recesses and ducts. Due to the largely punctiform clamping action of the individual pressure bodies, this device is suitable for positioning relatively large workpieces, for example with a straight surface and an inclined surface, several pressure bodies being required for exact positioning of the workpiece. For smaller, for example round workpieces, the individual pressure head is provided with a prismatic recess.
  • the known devices are not suitable for achieving the object on which the invention is based, which essentially consists in designing a device of the type mentioned at the outset in such a way that workpieces with relatively small clamping surfaces and / or with small, manufacturing-related range tolerances, and workpieces with easily deformable upper and clamping surfaces can be positioned exactly with respect to a reference surface and, as a result, further machining of the respective workpiece is ensured without any further technical outlay.
  • the individual pressure body and the associated housing block chamber were designed to be cuboid or rectangular in profile cross section, also taking into account any higher manufacturing costs, in order to achieve a relatively large pressure body clamping surface and exact guidance in the housing block. Tests have shown that workpieces with relatively small clamping surfaces can be clamped exactly in this position, even in any position in the outer clamping area of the pressure body clamping surface, without tilting the pressure body in the housing block.
  • This additional device thus forms a functional clamping element even for workpieces with relatively small, easily deformable surfaces and clamping surfaces.
  • Fig. 1 shows a machine vice designated in its entirety with 50 with inserted additional device 25 for clamping workpieces for machining. Furthermore, a workpiece 20 that can be inserted according to the dash-dotted line is shown in FIG. 1.
  • the schematically illustrated machine screw Stock 50 comprises a plate-shaped carrier member 10 with rail-like guides 11, not shown, a first clamping jaw 12 arranged on one side of the carrier member 10 and a bearing block 15 arranged on the other side of the carrier member 10. Between the bearing block 15 and the first clamping jaw 12, a second jaw 13, which is operatively connected to a drive spindle 14, is provided. The second clamping jaw 13 can be displaced in relation to the first, stationary clamping jaw 12 by means of the drive spindle 14, which is mounted in the bearing block 15 and can be actuated by a corrugated hand screw 16, as shown in FIG. 1 with the direction of the arrow 1.
  • FIG. 2 shows the additional device 25 in a perspective side view and one can see a housing block 30 and two cuboid pressure bodies 40, 45 arranged at a distance from one another in the housing block 30 with largely flat clamping surfaces 42, 47.
  • the individual clamping surface 42, 47 of the respective pressure body is larger than the remaining end face of the housing block 30, which encloses the pressure body 40, 45.
  • FIG. 3 shows the additional device 25, shown partly in the disassembled state and in section, which is described in detail below.
  • the housing block 30 provided in the illustrated embodiment with two chambers 36, 37 separated by an intermediate wall 34 has two side walls 31, 31 ', a rear wall 32 and an upper and a lower wall 33, 33'.
  • the two chambers 36, 37 are connected to one another by an opening 35.
  • the first pressure body 40 provided with a seal 41 on its periphery is shown in the inserted state, the second pressure body 45 provided with a seal 46 being shown in the disassembled state.
  • a rubber-elastic round cord seal 41, 46 is provided as a seal for the two pressure bodies 40, 45, which are arranged in corresponding grooves, not shown in FIG. 3 and not designated.
  • a threaded bore 39 is provided in one side wall 31, which is sealed with a closure member 38 after the filling process. Both pressure elements 40, 45 are inserted into the chambers 36, 37 for the filling process.
  • the additional device 25 shown in FIGS. 1 to 4 and described above has two pressure bodies 40, 45 which are arranged at a distance from one another and which, during the clamping process, counterbalance the pressure of the workpiece by moving the hydraulic fluid from one chamber to the other with a uniform contact pressure the clamping surface of the respective workpiece.
  • the hydraulic fluid is pressed into the other chamber by the contact pressure against the clamping surface of the pressure body which is acted upon first, and the associated pressure body is thereby pressed against the workpiece having the smaller span.
  • FIG. 4 shows the variant of the additional device, designated as a whole by 60, which in the exemplary embodiment shown comprises four housing blocks 30 a , 30 b , 30 c , 30 d arranged at a distance from one another.
  • the individual housing blocks 30 a to 30 d are operatively connected to one another via a pipeline 65 and are each provided with at least one chamber (not shown in FIG. 4).
  • a pressure body 45 a , 45 b , 45 c , 45 d is arranged in the chambers of the housing blocks 30 a - 30 d .
  • Fig. 5 the one housing block 30 a is shown partially in section, which will be described below.
  • the housing block 30 a provided with a chamber 36 ' comprises the side walls 31, 31', the rear wall 32 and the upper and lower wall 33, 33 '.
  • the pipeline 65 is connected in a manner not shown, which is connected to the chamber 37 'via a hole (not shown) penetrating the wall 33.
  • the chamber 37 ' is provided with the seal 46 pressure body 45 a .
  • the seal 46 is arranged and held in a circumferential groove 48 of the pressure body 45 a .
  • the housing blocks 30 b , 30 c , 30 d are formed analogously to the housing block 30 a described above.
  • the chambers of the housing blocks 30 a - 30 d which are essentially closed by the pressure bodies 45 a - 45 d, are likewise filled with a hydraulic fluid, an opening as shown in FIG. 3 being provided for filling on the side wall 31 of the individual housing block, which, after the filling process, is also sealed with a corresponding closure member.
  • Fig. 6 shows a section of a pressure body 45 a shown on a larger scale according to the section line VV in Fig. 5 and you can see the groove 48 for the seal 46 partially shown.
  • the pressure body 45 a is square or rectangular in profile cross section and on his Round R corners.
  • the groove 48 has a groove depth t corresponding to the seal 46 on the straight lines G, G ', and a slightly smaller groove depth t 2 on the curves R in relation to the groove depth t.
  • the smaller groove depth t 2 is achieved in that the inner wall W is provided with a radius that is laid outwards. This prevents constriction of the seal 46 on the curves R on the one hand, and on the other hand optimal sealing of the seal on the inside 37 "of the chamber 37 '(FIG. 5) is achieved.
  • the additional device 60 shown in FIG. 4 has four housing blocks 30 a - 30 d arranged at a distance from one another.
  • the individual pressure body 45 a - 45 d with its clamping surface 47 a - 47 d is pressed against the clamping surface of the individual workpieces by moving the hydraulic fluid from one chamber into the other with a constant contact pressure, depending on the span of the workpiece.
  • the hydraulic fluid is pressed into the other chamber via the pipeline 65 by the contact pressure against the clamping surface of the pressure body which is acted upon first, and thereby the associated pressure body of the next housing block is pressed against the workpiece with the smaller span is pressed.
  • the individual housing blocks 30 a - 30 d interconnecting pipe 65 may be formed as a rigid, flexible and / or variable-length line.
  • the additional device 25 or 60 can also be provided with a plurality of pressure elements arranged in series or next to one another, the pressure elements, as shown in more detail in FIGS. 2 and 4, being largely cuboid or not Rectangular shape shown in detail.
  • the chambers in the housing blocks are designed in accordance with the respective pressure body.
  • the clamping surfaces of the individual pressure bodies are adapted to the workpiece to be clamped in each case and can be flat, prismatic, cambered, concave or the like.
  • the accessory device 25 or 60 described above has a varied application and is suitable for vices, milling, grinding -, planing and drilling machines or the like. These additional devices can be arranged fixedly or loosely on one of the two clamping jaws 12, 13 or can be integrated on one of the two clamping jaws.

Description

Die Erfindung bezieht sich auf eine Zusatzvorrichtung für einen mit zwei Klemmbacken versehenen Maschinenschraubstock, welche Vorrichtung in einem Gehäuse kolbenartig wirkende, abgedichtete Druckkörper umfasst, die in dem Gehäuse gegen die Rückstellkraft einer verlagerbaren Hydraulikflüssigkeit selbsttätig in bezug auf das einzuspannende Werkstück einstellbar sind.The invention relates to an additional device for a machine vice provided with two clamping jaws, the device comprising, in a housing, piston-like, sealed pressure bodies which can be set automatically in the housing against the restoring force of a displaceable hydraulic fluid with respect to the workpiece to be clamped.

Aus der CH-A 348 379 ist eine Vorrichtung bekannt, welche zum Positionieren von Werkstücken zwischen den Klemmbacken eines Maschinenschraubstockes ausgebildet ist. Diese Vorrichtung umfasst einen Gehäuseblock mit mehreren, zylindrisch ausgebildeten Druckkörpern, die in Reihe sowie gegenüberliegend zueinander angeordnet sind. Die Druckkörper weisen je einen konisch oder abgerundet ausgebildeten Kopf auf und sind in entsprechend ausgebildeten, durch Kanäle miteinander in Verbindung stehenden Ausnehmungen abgedichtet angeordnet und kolbenartig wirkend gegen die Rückstellkraft einer in den Ausnehmungen und Kanälen befindlichen Hydraulikflüssigkeit verstellbar. Diese Vorrichtung eignet sich aufgrund der weitgehend punktförmigen Klemmwirkung der einzelnen Druckkörper zum Positionieren relativ grossflächiger, beispielsweise mit einer geraden und einer geneigt dazu angeordneten Fläche versehenen Werkstücke, wobei für eine exakte Positionierung des Werkstückes mehrere Druckkörper erforderlich sind. Für kleinere, beispielsweise runde Werkstücke ist der einzelne Druckkörper-Kopf mit einer prismatisch ausgebildeten Ausnehmung versehen.From CH-A 348 379 a device is known which is designed for positioning workpieces between the clamping jaws of a machine vice. This device comprises a housing block with a plurality of cylindrical pressure bodies, which are arranged in series and opposite one another. The pressure bodies each have a conical or rounded head and are arranged in appropriately designed recesses which are connected to one another by ducts and are adjustable in a piston-like manner against the restoring force of a hydraulic fluid located in the recesses and ducts. Due to the largely punctiform clamping action of the individual pressure bodies, this device is suitable for positioning relatively large workpieces, for example with a straight surface and an inclined surface, several pressure bodies being required for exact positioning of the workpiece. For smaller, for example round workpieces, the individual pressure head is provided with a prismatic recess.

Eine weitere Vorrichtung ist aus der US-A 4 284 267 bekannt, welche im wesentlichen zwei zwischen den beiden Klemmbacken eines Maschinenschraubstockes einsetzbare Gehäuseblöcke umfasst. In jedem Gehäuseblock sind in Reihe mehrere Kolben angeordnet, die gegen die Rückstellkraft einer in einer entsprechend ausgebildeten Ausnehmung des Gehäuseblocks befindlichen und durch Druck verlagerbaren Hydraulikflüssigkeit verstellbar sind. An jedem Kolben ist stirnseitig zusätzlich ein würfelartig ausgebildeter Druckkörper befestigt, wobei die einzelnen mit ihren kontaktierend aneinander gleitenden Seitenflächen versehenen Druckkörper zusammen mit dem jeweiligen Kolben verstellbar sind. Diese Vorrichtung eignet sich insbesondere zum Einspannen von Werkstücken mit Einspannflächen unregelmässiger Formgebung.Another device is known from US Pat. No. 4,284,267, which essentially comprises two housing blocks which can be inserted between the two clamping jaws of a machine vice. A plurality of pistons are arranged in series in each housing block and are adjustable against the restoring force of a hydraulic fluid located in a correspondingly formed recess in the housing block and displaceable by pressure. A cube-shaped pressure element is additionally attached to the front of each piston, the individual pressure elements provided with their contacting sliding side surfaces being adjustable together with the respective piston. This device is particularly suitable for clamping workpieces with clamping surfaces of irregular shape.

Die bekannten Vorrichtungen sind nicht geeignet, die der Erfindung zugrundeliegende Aufgabe zu lösen, welche im wesentlichen darin besteht, eine Vorrichtung der eingangs genannten Art derart auszubilden, dass Werkstücke mit relativ kleinen Spannflächen und/oder mit geringen, fertigungsbedingten Spannbreiten-Toleranzen, sowie Werkstücke mit leicht deformierbaren Ober-und Spannflächen exakt in bezug auf eine Bezugsfläche positionierbar sind und dadurch, ohne weiteren technischen Aufwand, die weitere, spanabhebende Bearbeitung des jeweiligen Werkstückes gewährleistet ist.The known devices are not suitable for achieving the object on which the invention is based, which essentially consists in designing a device of the type mentioned at the outset in such a way that workpieces with relatively small clamping surfaces and / or with small, manufacturing-related range tolerances, and workpieces with easily deformable upper and clamping surfaces can be positioned exactly with respect to a reference surface and, as a result, further machining of the respective workpiece is ensured without any further technical outlay.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass

  • der einzelne Druckkörper einstückig und im Profilquerschnitt quadratisch oder rechteckig mit abgerundeten Ecken ausgebildet und in einer entsprechend dem Druckkörper-Profilquerschnitt ausgebildeten Kammer des Gehäuseblocks verschiebbar geführt ist,
  • die dem einzuspannenden Werkstück zugewandte Klemmfläche entsprechend dem Druckkörper-Profilquerschnitt ausgebildet und grösser als die verbleibende, den einzelnen Druckkörper umschliessende Fläche des Gehäuseblocks ist,
  • der einzelne Druckkörper an seinem Umfang mit einer in einer Nut eingelegten Dichtung in der Kammer abgedichtet ist, wobei
  • zur Erreichung einer optimalen, dichtenden Anpressung die Nuttiefe im Bereich der abgerundeten Ecken etwas geringer als die Nuttiefe an den gegenüberliegend zueinander angeordneten, geraden Seiten des einzelnen Druckkörpers ausgebildet ist.
According to the invention, this object is achieved in that
  • the individual pressure element is made in one piece and has a square or rectangular profile cross section with rounded corners and is displaceably guided in a chamber of the housing block designed according to the pressure element profile cross section,
  • the clamping surface facing the workpiece to be clamped is designed in accordance with the pressure body profile cross section and is larger than the remaining surface of the housing block which surrounds the individual pressure body,
  • the individual pressure body is sealed at its periphery with a seal inserted in a groove in the chamber, wherein
  • In order to achieve an optimal, sealing pressure, the groove depth in the area of the rounded corners is somewhat less than the groove depth on the straight sides of the individual pressure element arranged opposite one another.

Weitere Ausgestaltungen der Erfindung ergeben sich aus der folgenden Beschreibung in Verbindung mit der Zeichnung und den Unteransprüchen.Further embodiments of the invention result from the following description in conjunction with the drawing and the subclaims.

Bei der erfindungsgemässen Zusatzvorrichtung wurde bewusst, auch unter Berücksichtigung eventueller höherer Herstellungskosten, zur Erreichung einer relativ grossen Druckkörper-Klemmfläche sowie einer exakten Führung in dem Gehäuseblock, der einzelne Druckkörper sowie die zugehörige Gehäuseblock-Kammer im Profilquerschnitt quaderförmig oder rechteckig ausgebildet. Versuche haben gezeigt, dass mit dieser Zusatzvorrichtung Werkstücke mit relativ kleinen Einspannflächen auch in beliebiger Lage im äusseren Spannbereich der Druckkörper-Klemmfläche exakt, ohne Verkantung der Druckkörper in dem Gehäuseblock, eingespannt werden können. Diese Zusatzvorrichtung bildet somit ein funktionsfähiges Spannelement auch für Werkstücke mit verhältnismässig kleinen, leicht deformierbaren Ober- und Spannflächen.In the case of the additional device according to the invention, the individual pressure body and the associated housing block chamber were designed to be cuboid or rectangular in profile cross section, also taking into account any higher manufacturing costs, in order to achieve a relatively large pressure body clamping surface and exact guidance in the housing block. Tests have shown that workpieces with relatively small clamping surfaces can be clamped exactly in this position, even in any position in the outer clamping area of the pressure body clamping surface, without tilting the pressure body in the housing block. This additional device thus forms a functional clamping element even for workpieces with relatively small, easily deformable surfaces and clamping surfaces.

Die Erfindung wird nachstehend anhand der Zeichnung näher beschrieben.The invention is described below with reference to the drawing.

Es zeigt:

  • Fig. 1 ein schematisch in Seitenansicht dargestelltes Schaubild eines Maschinenschraubstockes mit eingesetzter Zusatzvorrichtung,
  • Fig. 2 eine perspektivische Seitenansicht der Zusatzvorrichtung gemäss Fig. 1,
  • Fig. 3 die teilweise in demontiertem Zustand und im Schnitt dargestellte Zusatzvorrichtung gemäss Fig. 1,
  • Fig. 4 eine perspektivisch dargestellte Variante der aus mehreren Gehäuseblöcken gebildeten Zusatzvorrichtung,
  • Fig. 5 einen einzelnen, in Draufsicht und teilweise im Schnitt dargestellten Gehäuseblock der Zusatzvorrichtung gemäss Fig. 4, und
  • Fig. 6 einen in grösserem Massstab dargestellten Schnitt gemäss der Linie V-V in Fig. 5.
It shows:
  • 1 is a schematic side view diagram of a machine vice with additional device inserted,
  • 2 shows a perspective side view of the additional device according to FIG. 1,
  • 3 shows the additional device shown in FIG. 1, partly in the disassembled state and in section,
  • 4 is a perspective variant of the additional device formed from several housing blocks,
  • 5 shows a single housing block of the additional device according to FIG. 4, shown in plan view and partly in section, and
  • 6 shows a section shown on a larger scale along the line VV in FIG. 5.

Fig. 1 zeigt einen in seiner Gesamtheit mit 50 bezeichneten Maschinenschraubstock mit eingesetzter Zusatzvorrichtung 25 zum Einspannen von Werkstücken zur spanabhebenden Bearbeitung. Weiterhin ist in Fig. 1 ein gemäss der strichpunktierten Linie einsetzbares Werkstück 20 dargestellt.Fig. 1 shows a machine vice designated in its entirety with 50 with inserted additional device 25 for clamping workpieces for machining. Furthermore, a workpiece 20 that can be inserted according to the dash-dotted line is shown in FIG. 1.

Der schematisch dargestellte Maschinenschraubstock 50 umfasst ein plattenförmig ausgebildetes Trägerorgan 10 mit nicht näher dargestellten, schienenartigen Führungen 11, eine auf der einen Seite des Trägerorgans 10 angeordnete erste Klemmbacke 12 sowie einen auf der anderen Seite des Trägerorgans 10 angeordneten Lagerbock 15. Zwischen dem Lagerbock 15 und der ersten Klemmbacke 12 ist eine mit einer Antriebsspindel 14 wirkverbundene zweite Klemmbacke 13 vorgesehen. Die zweite Klemmbacke 13 ist mittels der in dem Lagerbock 1 5 gelagerten und von einer geriffelten Handschraube 16 betätigbaren Antriebsspindel 14, wie in Fig. 1 mit Pfeilrichtung 1 dargestellt, in Bezug auf die erste, stationäre Klemmbacke 12 verschiebbar.The schematically illustrated machine screw Stock 50 comprises a plate-shaped carrier member 10 with rail-like guides 11, not shown, a first clamping jaw 12 arranged on one side of the carrier member 10 and a bearing block 15 arranged on the other side of the carrier member 10. Between the bearing block 15 and the first clamping jaw 12, a second jaw 13, which is operatively connected to a drive spindle 14, is provided. The second clamping jaw 13 can be displaced in relation to the first, stationary clamping jaw 12 by means of the drive spindle 14, which is mounted in the bearing block 15 and can be actuated by a corrugated hand screw 16, as shown in FIG. 1 with the direction of the arrow 1.

In Fig. 2 ist die Zusatzvorrichtung 25 in perspektivischer Seitenansicht dargestellt und man erkennt einen Gehäuseblock 30 sowie zwei im Abstand zueinander in dem Gehäuseblock 30 angeordnete, quaderförmig ausgebildete Druckkörper 40,45 mit weitgehend ebenen Klemmflächen 42,47. Die einzelne Klemmfläche 42,47 des jeweiligen Druckkörpers ist hierbei grösser als die restliche, den Druckkörper 40,45 umschliessende Stirnfläche des Gehäuseblocks 30.2 shows the additional device 25 in a perspective side view and one can see a housing block 30 and two cuboid pressure bodies 40, 45 arranged at a distance from one another in the housing block 30 with largely flat clamping surfaces 42, 47. The individual clamping surface 42, 47 of the respective pressure body is larger than the remaining end face of the housing block 30, which encloses the pressure body 40, 45.

Fig. 3 zeigt die teilweise in demontiertem Zustand und im Schnitt dargestellte Zusatzvorrichtung 25, welche nachstehend im Einzelnen beschrieben wird.FIG. 3 shows the additional device 25, shown partly in the disassembled state and in section, which is described in detail below.

Der im dargestellten Ausführungsbeispiel mit zwei, durch eine Zwischenwand 34 voneinander getrennten Kammern 36,37 versehene Gehäuseblock 30 hat zwei Seitenwände 31, 31', eine Rückwand 32 sowie eine obere und eine untere Wand 33, 33'. Die beiden Kammern 36,37 sind durch eine Oeffnung 35 miteinander verbunden. Der an seinem Umfang mit einer Dichtung 41 versehene erste Druckkörper 40 ist in eingesetztem Zustand dargestellt, wobei der zweite, mit einer Dichtung 46 versehene Druckkörper 45 in demontiertem Zustand dargestellt ist. Als Dichtung für die beiden Druckkörper 40,45 ist eine gummielastische Rundschnur-Dichtung 41,46 vorgesehen, welche in entsprechenden, in Fig. 3 nicht näher dargestellten und nicht bezeichneten Nuten angeordnet sind. Zum Einfüllen einer geeigneten Hydraulik-Flüssigkeit in die Kammern 36,37 ist in der einen Seitenwand 31 eine Gewindebohrung 39 vorgesehen, welche nach dem Einfüllvorgang mit einem Verschlussorgan 38 abdichtend verschlossen wird. Für den Einfüllvorgang sind beide Druckkörper 40,45 in die Kammern 36,37 eingesetzt.The housing block 30 provided in the illustrated embodiment with two chambers 36, 37 separated by an intermediate wall 34 has two side walls 31, 31 ', a rear wall 32 and an upper and a lower wall 33, 33'. The two chambers 36, 37 are connected to one another by an opening 35. The first pressure body 40 provided with a seal 41 on its periphery is shown in the inserted state, the second pressure body 45 provided with a seal 46 being shown in the disassembled state. A rubber-elastic round cord seal 41, 46 is provided as a seal for the two pressure bodies 40, 45, which are arranged in corresponding grooves, not shown in FIG. 3 and not designated. For filling a suitable hydraulic fluid into the chambers 36, 37, a threaded bore 39 is provided in one side wall 31, which is sealed with a closure member 38 after the filling process. Both pressure elements 40, 45 are inserted into the chambers 36, 37 for the filling process.

Die in den Figuren 1 bis 4 dargestellte und vorgehend beschriebene Zusatzvorrichtung 25 weist zwei im Abstand zueinander angeordnete Druckkörper 40,45 auf, welche beim Spannvorgang je nach Spannbreite des Werkstückes durch das Verlagern der Hydraulik-Flüssigkeit von einer in die andere Kammer mit gleichmässigem Anpressdruck gegen die Spannfläche des jeweiligen Werkstückes wirken. Hierbei wird durch den Anpressdruck gegen die Klemmfläche des zuerst beaufschlagten Druckkörpers die Hydraulik-Flüssigkeit in die andere Kammer gedrückt und dadurch der zugeordnete Druckkörper gegen das die geringere Spannbreite aufweisende Werkstück gepresst.The additional device 25 shown in FIGS. 1 to 4 and described above has two pressure bodies 40, 45 which are arranged at a distance from one another and which, during the clamping process, counterbalance the pressure of the workpiece by moving the hydraulic fluid from one chamber to the other with a uniform contact pressure the clamping surface of the respective workpiece. In this case, the hydraulic fluid is pressed into the other chamber by the contact pressure against the clamping surface of the pressure body which is acted upon first, and the associated pressure body is thereby pressed against the workpiece having the smaller span.

Fig. 4 zeigt die in der Gesamtheit mit 60 bezeichnete Variante der Zusatzvorrichtung, welche im dargestellten Ausführungsbeispiel vier im Abstand zueinander angeordnete Gehäuseblöcke 30a, 30b, 30c, 30d umfasst. Die einzelnen Gehäuseblöcke 30a bis 30d stehen über eine Rohrleitung 65 miteinander in Wirkverbindung und sind jeweils mit mindestens einer in Fig. 4 nicht näher dargestellten Kammer versehen. In den Kammern der Gehäuseblöcke 30a - 30d ist je ein Druckkörper 45a, 45b, 45c, 45d angeordnet.FIG. 4 shows the variant of the additional device, designated as a whole by 60, which in the exemplary embodiment shown comprises four housing blocks 30 a , 30 b , 30 c , 30 d arranged at a distance from one another. The individual housing blocks 30 a to 30 d are operatively connected to one another via a pipeline 65 and are each provided with at least one chamber (not shown in FIG. 4). A pressure body 45 a , 45 b , 45 c , 45 d is arranged in the chambers of the housing blocks 30 a - 30 d .

In Fig. 5 ist der eine Gehäuseblock 30a teilweise im Schnitt dargestellt, welcher nachstehend beschrieben wird.In Fig. 5 the one housing block 30 a is shown partially in section, which will be described below.

Der mit einer Kammer 36' versehene Gehäuseblock 30a umfasst die Seitenwände 31, 31', die Rückwand 32 sowie die obere und untere Wand 33, 33'. An der oberen Wand 33 ist in nicht näher dargestellter Weise die Rohrleitung 65 angeschlossen, welche über eine die Wand 33 durchdringende, nicht dargestellte Bohrung mit der Kammer 37' in Verbindung steht. In der Kammer 37' ist der mit der Dichtung 46 versehene Druckkörper 45a angeordnet. Die Dichtung 46 ist in einer umlaufenden Nut 48 des Druckkörpers 45a angeordnet und gehalten. Die Gehäuseblöcke 30b, 30c, 30d sind analog des voran beschriebenen Gehäuseblocks 30a ausgebildet.The housing block 30 a provided with a chamber 36 'comprises the side walls 31, 31', the rear wall 32 and the upper and lower wall 33, 33 '. On the upper wall 33, the pipeline 65 is connected in a manner not shown, which is connected to the chamber 37 'via a hole (not shown) penetrating the wall 33. In the chamber 37 'is provided with the seal 46 pressure body 45 a . The seal 46 is arranged and held in a circumferential groove 48 of the pressure body 45 a . The housing blocks 30 b , 30 c , 30 d are formed analogously to the housing block 30 a described above.

Die durch die Druckkörper 45a - 45d im wesentlichen verschlossenen Kammern der Gehäuseblöcke 30a - 30d sind ebenfalls mit einer Hydraulik- Flüssigkeit gefüllt, wobei zum Einfüllen an der Seitenwand 31 des einzelnen Gehäuseblocks eine wie in Fig. 3 dargestellte Oeffnung vorgesehen ist, welche nach dem Einfüllvorgang ebenfalls mit einem entsprechenden Verschlussorgan abdichtend verschlossen wird.The chambers of the housing blocks 30 a - 30 d, which are essentially closed by the pressure bodies 45 a - 45 d, are likewise filled with a hydraulic fluid, an opening as shown in FIG. 3 being provided for filling on the side wall 31 of the individual housing block, which, after the filling process, is also sealed with a corresponding closure member.

Fig. 6 zeigt gemäss der Schnittlinie V-V in Fig. 5 einen in grösserem Massstab dargestellten Ausschnitt des einen Druckkörpers 45a und man erkennt die Nut 48 für die teilweise dargestellte Dichtung 46. Der Druckkörper 45a ist im Profilquerschnitt quadratisch oder rechteckig ausgebildet und an seinen Ecken mit Rundungen R versehen. Die Nut 48 weist an den Geraden G,G' eine der Dichtung 46 entsprechend dimensionierte Nuttiefe t, und an den Rundungen R eine in bezug auf die Nuttiefe t, etwas geringere Nuttiefe t2 auf. Die geringere Nuttiefe t2 wird dadurch erreicht, dass die innere Wand W mit einem nach aussen verlegten Radius versehen ist. Hierdurch wird einerseits eine Einschnürung der Dichtung 46 an den Rundungen R vermieden und andererseits eine optimale Anpressung der Dichtung an der Innenseite 37" der Kammer 37' (Fig. 5) erreicht.Fig. 6 shows a section of a pressure body 45 a shown on a larger scale according to the section line VV in Fig. 5 and you can see the groove 48 for the seal 46 partially shown. The pressure body 45 a is square or rectangular in profile cross section and on his Round R corners. The groove 48 has a groove depth t corresponding to the seal 46 on the straight lines G, G ', and a slightly smaller groove depth t 2 on the curves R in relation to the groove depth t. The smaller groove depth t 2 is achieved in that the inner wall W is provided with a radius that is laid outwards. This prevents constriction of the seal 46 on the curves R on the one hand, and on the other hand optimal sealing of the seal on the inside 37 "of the chamber 37 '(FIG. 5) is achieved.

Die in Fig. 4 dargestellte Zusatzvorrichtung 60 weist vier im Abstand zueinander angeordnete Gehäuseblöcke 30a - 30d auf. Beim Spannvorgang wird der einzelne Druckkörper 45a - 45d mit seiner Klemmfläche 47a - 47d je nach Spannbreite des Werkstückes durch das Verlagern der Hydraulik- Flüssigkeit von einer in die andere Kammer mit gleichmässigem Anpressdruck gegen die Klemmfläche der einzelnen Werkstücke gepresst. Hierbei wird durch den Anpressdruck gegen die Klemmfläche des zuerst beaufschlagten Druckkörpers die Hydraulik- Flüssigkeit über die Rohrleitung 65 in die andere Kammer gedrückt und dadurch der zugeordnete Druckkörper des nächsten Gehäuseblocks gegen das die geringere Spannbreite aufweisende Werkstück gepresst.The additional device 60 shown in FIG. 4 has four housing blocks 30 a - 30 d arranged at a distance from one another. During the clamping process, the individual pressure body 45 a - 45 d with its clamping surface 47 a - 47 d is pressed against the clamping surface of the individual workpieces by moving the hydraulic fluid from one chamber into the other with a constant contact pressure, depending on the span of the workpiece. In this case, the hydraulic fluid is pressed into the other chamber via the pipeline 65 by the contact pressure against the clamping surface of the pressure body which is acted upon first, and thereby the associated pressure body of the next housing block is pressed against the workpiece with the smaller span is pressed.

Die die einzelnen Gehäuseblöcke 30a - 30d miteinander verbindende Rohrleitung 65 kann als starre, flexible und/oder längenveränderliche Leitung ausgebildet sein.The individual housing blocks 30 a - 30 d interconnecting pipe 65 may be formed as a rigid, flexible and / or variable-length line.

An dieser Stelle sei darauf hingewiesen, dass die Zusatzvorrichtung 25 oder 60 auch mit mehreren in Reihe oder nebeneinander liegend angeordneten Druckkörpern versehen sein kann, wobei die Druckkörper, wie in Fig. 2 und Fig. 4 näher dargestellt, eine weitgehend quaderförmige oder aber eine nicht näher dargestellte rechteckige Formgebung aufweisen können. Die Kammern in den Gehäuseblöcken sind hierbei entsprechend dem jeweiligen Druckkörper ausgebildet.At this point, it should be pointed out that the additional device 25 or 60 can also be provided with a plurality of pressure elements arranged in series or next to one another, the pressure elements, as shown in more detail in FIGS. 2 and 4, being largely cuboid or not Rectangular shape shown in detail. The chambers in the housing blocks are designed in accordance with the respective pressure body.

Zur Erreichung einer exakten, auf eine bestimmte Bezugslinie oder Bezugsfläche ausgerichtete Einspannung oder Klemmung eines Werkstückes mit beliebiger Formgebung, sind die Klemmflächen der einzelnen Druckkörper dem jeweils einzuspannenden Werkstück angepasst und können plan, prismatisch, bombiert, konkav oder dergleichen ausgebildet sein.In order to achieve an exact clamping or clamping of a workpiece with any shape aligned to a specific reference line or reference surface, the clamping surfaces of the individual pressure bodies are adapted to the workpiece to be clamped in each case and can be flat, prismatic, cambered, concave or the like.

Die beschriebene Zusatzvorrichtung 25 oder 60 hat einen mannigfaltigen Anwendungsbereich und ist geeignet für Schraubstöcke, Fräs-, Schleif-, Hobel- sowie Bohrmaschinen oder dergleichen. Diese Zusatzvorrichtungen können fest oder lose an einerderbeiden Klemmbacken 12,13 angeordnet oder aber an einer der beiden Klemmbacken intergriert sein.The accessory device 25 or 60 described above has a varied application and is suitable for vices, milling, grinding -, planing and drilling machines or the like. These additional devices can be arranged fixedly or loosely on one of the two clamping jaws 12, 13 or can be integrated on one of the two clamping jaws.

Claims (3)

1. Additional device for a machine vice (50) provided with two clamping jaws (12, 13), said device comprising sealed pressure members (40, 45, 45a - 45d) acting in piston-like manner in a casing block (30, 30a - 30d) and which are automatically adjustable in the latter with respect to the workpiece to be fixed counter to the restoring force of a displaceable hydraulic fluid, characterized in that the individual pressure member (40, 45, 45a - 45d) is constructed in one piece and square or rectangular with rounded corners in profile cross-section and is displaceably guided in a chamber (36, 37, 37') of casing block (30, 30a - 30d) constructed corresponding to the pressure member profile cross-section, the clamping surface (42, 47, 47a - 47d) facing the workpiece (25) to be fixed is constructed corresponding to the pressure member profile cross-section and is larger than the remaining casing block surface surrounding the individual pressure members, the circumference of the individual pressure member (40, 45, 45a - 45d) is sealed in the chamber (36, 37, 37') with a packing (41, 46) inserted in a slot (48) and for obtaining an optimum, sealing pressing effect the slot depth (t2) in the vicinity of the rounded corners (R) is somewhat less than the slot depth (ti) on the facing straight sides of the individual pressure member (40, 45, 45a - 45d).
2. Additional device according to claim 1, characterized in that several casing blocks (30, 30a - 30d) arranged in a row and provided with pressure members (45, 45a - 45d) are provided, which are operatively interconnected by a pipe (65).
3. Additional device according to claim 1, characterized in that the pipe (65) interconnecting the individual casing blocks (30, 30a - 30d) is constructed as a substantially rigid or flexible, length-variable line.
EP19840810047 1983-02-01 1984-01-26 Accessory device for machine vices Expired EP0115474B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84810047T ATE22671T1 (en) 1983-02-01 1984-01-26 ADDITIONAL DEVICE FOR MACHINE VICE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH547/83 1983-02-01
CH54783 1983-02-01
CH4576/83 1983-08-23
CH457683 1983-08-23

Publications (3)

Publication Number Publication Date
EP0115474A2 EP0115474A2 (en) 1984-08-08
EP0115474A3 EP0115474A3 (en) 1984-09-05
EP0115474B1 true EP0115474B1 (en) 1986-10-08

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ID=25684919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840810047 Expired EP0115474B1 (en) 1983-02-01 1984-01-26 Accessory device for machine vices

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EP (1) EP0115474B1 (en)
DE (1) DE3460885D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104440293A (en) * 2014-10-23 2015-03-25 苏州大学 Workpiece clamp of ultrasonic mould drilling and milling line for precision plastic part machining

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59106549D1 (en) * 1991-04-04 1995-10-26 Fritz Ramseier Device for holding and clamping workpieces.
FR2768956B1 (en) * 1997-09-29 1999-12-24 Gilles Tropel JAW WITH ADJUSTABLE BUTTONS AND VICE USING THE SAME
DE19954369A1 (en) * 1999-11-11 2001-05-31 Metronom Indvermessung Gmbh Work piece clamping device esp. for processing and measuring purposes has work piece support part spring-loaded in direction of clamping force, and spring travel sensor
US6345816B1 (en) 2000-05-11 2002-02-12 Snap Jaws Manufacturing Co. Hydraulic vise jaws
CN108406630B (en) * 2018-05-18 2020-10-30 山东华源索具有限公司 Anti-deformation automatic protection air pressure bench vice

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH348379A (en) * 1958-04-26 1960-08-15 Reginald Larrad Frederick Device for positioning a part
GB868162A (en) * 1959-03-16 1961-05-17 Jones & Shipman A A Ltd A device for holding and supporting workpieces
US3868102A (en) * 1972-04-27 1975-02-25 Maxwell Pevar Contour-conforming clamping device
US4088312A (en) * 1977-09-27 1978-05-09 Nasa Variable contour securing system
US4284267A (en) * 1980-03-26 1981-08-18 Dennis M. Thayer Variable contour vice jaw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104440293A (en) * 2014-10-23 2015-03-25 苏州大学 Workpiece clamp of ultrasonic mould drilling and milling line for precision plastic part machining

Also Published As

Publication number Publication date
DE3460885D1 (en) 1986-11-13
EP0115474A2 (en) 1984-08-08
EP0115474A3 (en) 1984-09-05

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