EP0139824A2 - Dispositif de serrage à dépression pour serrer des pièces de travail sur les tables de machine-outil et analogues - Google Patents

Dispositif de serrage à dépression pour serrer des pièces de travail sur les tables de machine-outil et analogues Download PDF

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Publication number
EP0139824A2
EP0139824A2 EP84105771A EP84105771A EP0139824A2 EP 0139824 A2 EP0139824 A2 EP 0139824A2 EP 84105771 A EP84105771 A EP 84105771A EP 84105771 A EP84105771 A EP 84105771A EP 0139824 A2 EP0139824 A2 EP 0139824A2
Authority
EP
European Patent Office
Prior art keywords
workpiece
clamping
machine tool
grooves
vacuum
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.)
Withdrawn
Application number
EP84105771A
Other languages
German (de)
English (en)
Other versions
EP0139824A3 (fr
Inventor
Horst Witte
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.)
Horst Witte Entwicklungs und Vertriebs KG
Original Assignee
Horst Witte Entwicklungs- und Vertriebs-KG
Horst Witte Entwicklungs und Vertriebs 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 Horst Witte Entwicklungs- und Vertriebs-KG, Horst Witte Entwicklungs und Vertriebs KG filed Critical Horst Witte Entwicklungs- und Vertriebs-KG
Publication of EP0139824A2 publication Critical patent/EP0139824A2/fr
Publication of EP0139824A3 publication Critical patent/EP0139824A3/fr
Withdrawn legal-status Critical Current

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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
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/005—Vacuum work holders

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Such devices are known in a wide variety of configurations.
  • a known device is provided with intersecting grooves, to which the negative pressure is supplied via a central, underlying chamber through a plurality of holes and lines. If a workpiece of a certain dimension, i.e. If a workpiece that only covers part of the entire clamping surface is to be held in place by applying a vacuum, it is necessary to separate the remaining grooves from the vacuum source. This is done by inserting rubber sealing cords or the like in the edge area of the workpiece. To adapt to the shape of the workpiece, it is therefore always necessary to insert the sealing cords all around, i.e. If the workpiece shape changes, the sealing cords must also be moved to other grooves.
  • the invention has for its object to provide a device of the type mentioned, in which the adaptation to different workpiece shapes is greatly simplified, and the device is still very simple, so that it can be manufactured and used economically.
  • the grooves are formed by spirals starting from a fixed point. Practically, there is only one groove that runs from the fixed point, which often represents the geometric center, to an end point on the edge of the clamping plate. If a specific workpiece is now to be clamped, it only has to be within the area, ie the projection of the workpiece, briefly before the exit of the spiral groove by a rubber seal made of an elastic material, such as foam rubber or the like for a seal. All that is required is a "plug" for sealing, which can be inserted, removed and reinserted very easily.
  • the rubber seal is inserted into the spiral groove shortly before the spiral emerges from the outer diameter region of the workpiece.
  • the grooves may not be circular, but polygonal.
  • the groove can be rectangular, square, oval or in adaptation to other workpiece shapes.
  • the device is designed as protected in claim 2. This provides a very simple connection to the vacuum source.
  • the device shown in the drawing consists of a clamping plate 1, which serves to clamp a workpiece 2.
  • a spiral groove 3 extends from the fixed point in the center and is connected to a vacuum source via a bore 4.
  • a seal for example a foam rubber 5, is arranged as shown in Fig. 2, so that this seal is in the outer region of the workpiece, but still below this, so that the exposed part of the spiral groove 3 is separated from the vacuum source.
  • the device with practically an endless spiral groove is very simple in construction and in particular the separation from the area which is no longer to be supplied with negative pressure is possible by means of a single small seal.
  • the workpiece is ring-shaped or has an opening in the middle, then it is necessary in the middle region to ensure that the vacuum does not escape and is transmitted to the projection region of the workpiece. This is done by inserting a cord made of elastic material into the groove in the middle area.
  • the cross-section of the cord is designed in such a way that the conduction of the negative pressure from the opening 4 into the region of the workpiece is not impeded.
  • the device can also be used universally for occasionally occurring workpieces with unusual shapes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Gripping On Spindles (AREA)
EP84105771A 1983-10-22 1984-05-21 Dispositif de serrage à dépression pour serrer des pièces de travail sur les tables de machine-outil et analogues Withdrawn EP0139824A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833338476 DE3338476C1 (de) 1983-10-22 1983-10-22 Vakuum-Spannvorrichtung zum Aufspannen von Werkstuecken auf Werkzeugmaschinentischen oder dergleichen
DE3338476 1983-10-22

Publications (2)

Publication Number Publication Date
EP0139824A2 true EP0139824A2 (fr) 1985-05-08
EP0139824A3 EP0139824A3 (fr) 1986-02-12

Family

ID=6212539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105771A Withdrawn EP0139824A3 (fr) 1983-10-22 1984-05-21 Dispositif de serrage à dépression pour serrer des pièces de travail sur les tables de machine-outil et analogues

Country Status (2)

Country Link
EP (1) EP0139824A3 (fr)
DE (1) DE3338476C1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205518A (en) * 1987-06-10 1988-12-14 Emi Mec Ltd Window refurbishing by machining
EP0473954A1 (fr) * 1990-09-07 1992-03-11 DATRON-ELECTRONIC GmbH Dispositif de serrage pour pièces d'usinage
US5993302A (en) * 1997-12-31 1999-11-30 Applied Materials, Inc. Carrier head with a removable retaining ring for a chemical mechanical polishing apparatus
US6080050A (en) * 1997-12-31 2000-06-27 Applied Materials, Inc. Carrier head including a flexible membrane and a compliant backing member for a chemical mechanical polishing apparatus
TWI409133B (zh) * 2008-06-27 2013-09-21 Hon Hai Prec Ind Co Ltd 夾持裝置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734939C2 (de) * 1997-08-12 2002-11-21 Paul Auer Gmbh Vorrichtung zum Strahlen und/oder Aufrauhen von Gegenständen
CN106695603B (zh) * 2015-11-13 2018-11-27 晟进科技股份有限公司 夹具模座
CN107159916B (zh) * 2016-05-25 2019-01-25 付战玲 一种多轴数控机床

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307818A (en) * 1965-03-19 1967-03-07 Cocito Joe Michael Vacuum board manifold
DE1923833A1 (de) * 1969-05-09 1970-11-12 Ver Flugtechnische Werke Vorrichtung zur Befestigung von Werkstuecken od.dgl. an einer Werkzeugmaschine
US3627338A (en) * 1969-10-09 1971-12-14 Sheldon Thompson Vacuum chuck
US4448404A (en) * 1980-11-18 1984-05-15 Nippon Kogaku K. K. Device for holding a sheet-like sample

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307818A (en) * 1965-03-19 1967-03-07 Cocito Joe Michael Vacuum board manifold
DE1923833A1 (de) * 1969-05-09 1970-11-12 Ver Flugtechnische Werke Vorrichtung zur Befestigung von Werkstuecken od.dgl. an einer Werkzeugmaschine
US3627338A (en) * 1969-10-09 1971-12-14 Sheldon Thompson Vacuum chuck
US4448404A (en) * 1980-11-18 1984-05-15 Nippon Kogaku K. K. Device for holding a sheet-like sample

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205518A (en) * 1987-06-10 1988-12-14 Emi Mec Ltd Window refurbishing by machining
EP0473954A1 (fr) * 1990-09-07 1992-03-11 DATRON-ELECTRONIC GmbH Dispositif de serrage pour pièces d'usinage
US5993302A (en) * 1997-12-31 1999-11-30 Applied Materials, Inc. Carrier head with a removable retaining ring for a chemical mechanical polishing apparatus
US6080050A (en) * 1997-12-31 2000-06-27 Applied Materials, Inc. Carrier head including a flexible membrane and a compliant backing member for a chemical mechanical polishing apparatus
US6277009B1 (en) 1997-12-31 2001-08-21 Applied Materials, Inc. Carrier head including a flexible membrane and a compliant backing member for a chemical mechanical polishing apparatus
TWI409133B (zh) * 2008-06-27 2013-09-21 Hon Hai Prec Ind Co Ltd 夾持裝置

Also Published As

Publication number Publication date
DE3338476C1 (de) 1984-08-23
EP0139824A3 (fr) 1986-02-12

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

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Withdrawal date: 19860201

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Inventor name: WITTE, HORST