EP0115474B1 - Dispositif accessoire pour étaux de machine-outil - Google Patents

Dispositif accessoire pour étaux de machine-outil 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
Authority
EP
European Patent Office
Prior art keywords
individual
pressure member
clamping
additional device
pressure
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
Application number
EP19840810047
Other languages
German (de)
English (en)
Other versions
EP0115474A3 (en
EP0115474A2 (fr
Inventor
Roger Gloor
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84810047T priority Critical patent/ATE22671T1/de
Publication of EP0115474A2 publication Critical patent/EP0115474A2/fr
Publication of EP0115474A3 publication Critical patent/EP0115474A3/de
Application granted granted Critical
Publication of EP0115474B1 publication Critical patent/EP0115474B1/fr
Expired 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
    • 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.

Claims (3)

1. Dispositif auxiliaire pour un étau de machine (50) à deux mâchoires de serrage (12, 13) qui comporte dans un bloc-boîtier (30, 30a - 30d) des corps de pression (40, 45, 45a - 45d) rendus étanches et agissant à la manière de pistons qui sont automatiquement réglables dans le bloc-boîtier à l'incontre de la force de rappel d'un liquide hydraulique se déplaçant, en fonction de la pièce à serrer, caractérisé en ce que:
chaque corps de pression (40, 45, 45a - 45d) est réalisé d'une pièce et présente une section transversale carrée ou rectangulaire à angles arrondis et peut se déplacer à l'intérieur d'une chambre (36, 37, 37') du bloc-boîtier (30, 30a - 30d) dont la forme correspond à la section transversale du corps de pression,
la surface de serrage (42, 47, 47a - 47d) tournée vers la pièce (25) à serrer présente une forme correspondant à la section transversale du corps de pression et est plus étendue que la surface du bloc-boîtier restante, enfermant le corps de pression,
chaque corps de pression (40, 45, 45a - 45d) est rendu étanche dans la chambre (36, 37, 37'), surson pourtour par un joint d'étanchéité (40, 46) disposé dans une gorge (48), cependant que
pour obtenir une pression d'étanchéité optimale, la profondeur de la gorge (tz) est légèrement inférieure, dans la zone des angles arrondis (R), à la profondeur de la gorge (t1) telle qu'elle se présente sur les côtés droits opposés de chaque corps de pression (40, 45, 45a - 45d).
2. Dispositif auxiliaire selon la revendication 1, caractérisé en ce qu'il est prévu plusieurs blocs-boîtiers (30, 30a - 30d) disposés en série et pourvus de corps de pression (45, 45a - 45d), reliés entre eux par un conduit (65).
3. Dispositif auxiliaire selon la revendication 1, caractérisé en ce que le conduit (65) reliant entre eux les différents blocs-boîtiers (30, 30a - 30d) est un tuyau essentiellement rigide ou flexible, de longueur variable.
EP19840810047 1983-02-01 1984-01-26 Dispositif accessoire pour étaux de machine-outil Expired EP0115474B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84810047T ATE22671T1 (de) 1983-02-01 1984-01-26 Zusatzvorrichtung fuer maschinenschraubstoecke.

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 (fr) 1984-08-08
EP0115474A3 EP0115474A3 (en) 1984-09-05
EP0115474B1 true EP0115474B1 (fr) 1986-10-08

Family

ID=25684919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840810047 Expired EP0115474B1 (fr) 1983-02-01 1984-01-26 Dispositif accessoire pour étaux de machine-outil

Country Status (2)

Country Link
EP (1) EP0115474B1 (fr)
DE (1) DE3460885D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104440293A (zh) * 2014-10-23 2015-03-25 苏州大学 用于精密塑胶件加工的超声模具钻铣线的工件夹具

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59106549D1 (de) * 1991-04-04 1995-10-26 Fritz Ramseier Vorrichtung zum Halten und Spannen von Werkstuecken.
FR2768956B1 (fr) * 1997-09-29 1999-12-24 Gilles Tropel Machoire a touches reglables et etau en faisant application
DE19954369A1 (de) * 1999-11-11 2001-05-31 Metronom Indvermessung Gmbh Werkstückeinspannvorrichtung
US6345816B1 (en) 2000-05-11 2002-02-12 Snap Jaws Manufacturing Co. Hydraulic vise jaws
CN108406630B (zh) * 2018-05-18 2020-10-30 山东华源索具有限公司 防变形自动保护气压台虎钳

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH348379A (fr) * 1958-04-26 1960-08-15 Reginald Larrad Frederick Dispositif de positionnement d'une pièce
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 (zh) * 2014-10-23 2015-03-25 苏州大学 用于精密塑胶件加工的超声模具钻铣线的工件夹具

Also Published As

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

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