EP0418145B1 - Andruckelement zum Aufspannen von Werkstücken - Google Patents

Andruckelement zum Aufspannen von Werkstücken Download PDF

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Publication number
EP0418145B1
EP0418145B1 EP90402498A EP90402498A EP0418145B1 EP 0418145 B1 EP0418145 B1 EP 0418145B1 EP 90402498 A EP90402498 A EP 90402498A EP 90402498 A EP90402498 A EP 90402498A EP 0418145 B1 EP0418145 B1 EP 0418145B1
Authority
EP
European Patent Office
Prior art keywords
element according
clamping element
arm
movable part
members
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
Application number
EP90402498A
Other languages
English (en)
French (fr)
Other versions
EP0418145A1 (de
Inventor
André Carossino
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.)
Carossino Freres Dite Societe A Responsabilite Ltee Ste
Original Assignee
Carossino Freres Dite Societe A Responsabilite Ltee Ste
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 Carossino Freres Dite Societe A Responsabilite Ltee Ste filed Critical Carossino Freres Dite Societe A Responsabilite Ltee Ste
Publication of EP0418145A1 publication Critical patent/EP0418145A1/de
Application granted granted Critical
Publication of EP0418145B1 publication Critical patent/EP0418145B1/de
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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
    • B25B5/00—Clamps
    • B25B5/16—Details, e.g. jaws, jaw attachments
    • B25B5/163—Jaws or jaw attachments
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/104—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element
    • B25B5/108—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element the screw contacting one of the ends of the lever

Definitions

  • the present invention relates to the members of a clamping element generally used to hold on the work table of a machine tool the parts which must be machined there.
  • clamping elements generally consist of a housing which is fixed to a work table by means of an assembly member cooperating with a cleat sliding in a groove of the work table and in which a movable part is arranged. rotation about a horizontal axis and provided with a toothed sector cooperating with an endless control screw, said moving part comprising a lever arm whose end comes to bear on the workpiece.
  • the present invention relates to a clamping element of the type described above in which one can adjust the position of the arm relative to the housing for performing blockages by acting up or down on the part to be blocked.
  • the invention is particularly remarkable in that the lever arm is removably mounted in the moving part allowing it to move in translation in a direction substantially perpendicular to the axis of rotation of the moving part.
  • This arrangement makes it possible to adjust the relative position of the arm relative to the housing in order to adapt it to the different use cases.
  • the clamping element comprises an arm shaped so as to be able to act by lifting by coming to bear under a part to be held.
  • the arm being removable, it is thus possible to have several arms for a single clamping element and it is therefore possible in particular to provide an arm acting by lifting and not by action downwards.
  • the clamping member element shown in Figures 1 to 4 consists of a housing 1 in which is disposed a part 2 movable in rotation about a horizontal axis; this rotating part 2 comprises a toothed sector 21 which cooperates with an endless control screw 4 disposed in a housing arranged at the rear of the housing 1 and which is fixed in this housing by means of a nut 5 and a washer 6.
  • This screw control comprises a hexagonal head 22 which projects from the housing and which allows its rotation by means of a key.
  • the moving part 2 comprises an arm 3 forming a lever, the free end of which is provided with a support pad 12.
  • the lever arm 3 is removably mounted in the rotary part 2 and can slide in the latter so as to carry out a translational movement perpendicular to the axis of rotation of the rotary part 2.
  • the arm 3 can be locked in the rotating part 2 in several relative positions.
  • the arm 3 has in its lower face recesses such as that shown in 23 which are distributed over its entire length; these recesses cooperate with a locking device 14 constituted for example by a ball mounted on a spring.
  • the moving part 2 has a cylindrical central recess 24 which is coaxial with the axis of rotation of the part 2 and there are two identical circular flanges 9 in this central recess 24 which have in cross section the shape of an L and which are mounted head to tail symmetrically as can be seen in particular in Figure 4 so as to provide between them a central housing for the arm 3.
  • the two flanges are assembled l 'one on the other by means of two screws 25 which each pass through one of the flanges and engage in a tapped hole in the other flange.
  • FIGS. 6A, 6B, and 6C which represent one of the flanges 9, the latter has a smooth through hole 26 perpendicular to one of the branches of the L and a tapped hole 27 which is arranged axially in the another branch of L.
  • Each flange has a shoulder 28 constituting a crown which comes to bear on the outside face of the housing 1.
  • a groove 29 is arranged in the crown 28; this groove 29 cooperates with a lug 17 arranged in the part 2 so as to ensure centering of the assembly of the two flanges 9 when they are assembled.
  • the two flanges due to their design, favor, on the one hand, an increase in the contact surfaces for the rotation of the moving part 2 and, on the other hand, make it possible to make the unit monobloc and, consequently, d '' increase the rigidity of the latter.
  • the arm 3 is removable and one can use other arms such as that shown in Figure 5 which is intended to provide an upward support for blocking a workpiece.
  • the free end of this arm 30 has a curved portion 34 whose concavity is directed upwards so that the support pad (not shown in Figure 5) is directed to the top.
  • the clamping members of known type are generally fixed to the work table of a machine tool by means of a screw 31 which engages in a notch 32 of the housing 1 and which is screwed into a slider sliding in a groove of the work table.
  • a single screw 31 is used, placed at the front of the member, that is to say on the side of the arm 3.
  • a second fixing screw 33 is provided which is disposed at the rear of the clamping member, that is to say on the side opposite to the arm 3. This second screw also engages in a slide block in a groove of the work table and it is used to hold the clamping member on the table in the case where an arm such as that of FIG. 5 working in upward support is used.
  • the support pad 12 comprises a contact surface 41 whose length is substantially equal to twice the width; this contact surface has at its center a clear area 42 which allows the periphery of the contact surface 41 to be seated as well as possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Claims (9)

  1. Andruckelement zum Aufspannen von Werkstücken, bestehend aus einem auf einen Arbeitstisch fixierbaren Gehäuse (1), in dem ein Stück drehbeweglich um eine horizontale Achse angeordnet und mit einem gezahnten Segment (21) versehen ist, das mit einer Stellschnecke (4) zusammenwirkt, besagtes bewegliches Stück (2) weist einen Arm (3) auf, der einen Hebel bildet, dessen freies Ende zur Anlage am Werkstück kommt, dadurch gekennzeichnet, daß der Arm (3) lösbar am drehbeweglichen Stück (2) mit der Möglichkeit befestigt ist, diesen translatonisch in einer Richtung im wesentlichen senkrecht zur Drehachse des Stückes (2) zu verstellen.
  2. Element nach Anspruch 1, dadurch gekennzeichnet, daß es mit einem Arm (30) versehen und dieser derart ausgebildet ist, daß er durch Anheben von unten gegen ein zu haltendes Werkstück zur Anlage bringbar ist.
  3. Element nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Arme (3, 30) mit mehreren Ausnehmungen (23) versehen sind, die mit einer Sperre (14) zusammenwirken, welche im drehbeweglichen Stück (2) angeordnet ist.
  4. Element nach Anspruch 2, dadurch gekennzeichnet, daß es zwei Fixierungselemente (31, 33) für den Arbeitstisch aufweist, die beidseitig zur Drehachse des drehbeweglichen Stückes angeordnet sind.
  5. Element nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das drehbewegliche Stück (2) mit einer zylindrischen Zentralausnehmung (24) versehen ist, in der zwei flache, identische Kreisstücke (9) in Form eines L und gegeneinandergerichtet axial angeordnet sind, um eine zentrale Aufnahme für die Arme (3, 30) zu bilden.
  6. Element nach Anspruch 5, dadurch gekennzeichnet, daß die zwei Kreisstücke (9) zueinander durch Schrauben (25) fixiert sind, die das jeweilige Kreisstück durchgreifen und in einem Gewindesackloch (27) des jeweils anderen Kreisstückes verschraubt sind.
  7. Element nach Anspruch 6, dadurch gekennzeichnet, daß das drehbewegliche Stück mit einer Zentrierung (17) für mindestens eines der Kreisstücke (9) versehen ist.
  8. Element nach Anspruch 2, dadurch gekennzeichnet, daß das freie Ende des Anhubarmes (30) in Form einer Kurve (34) ausgebildet ist, deren Konkavität nach oben weist.
  9. Element nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Anlagestück (12) mit einer Kontaktfläche (41) versehen ist, deren Länge im wesentlichen gleich ist ihrer zweifachen Breite und die mittig mit einer Ausnehmungszone (42) versehen ist.
EP90402498A 1989-09-11 1990-09-11 Andruckelement zum Aufspannen von Werkstücken Expired - Lifetime EP0418145B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8911853 1989-09-11
FR8911853A FR2651706B1 (fr) 1989-09-11 1989-09-11 Element de pression pour bridage de pieces a usiner.

Publications (2)

Publication Number Publication Date
EP0418145A1 EP0418145A1 (de) 1991-03-20
EP0418145B1 true EP0418145B1 (de) 1993-09-22

Family

ID=9385320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402498A Expired - Lifetime EP0418145B1 (de) 1989-09-11 1990-09-11 Andruckelement zum Aufspannen von Werkstücken

Country Status (5)

Country Link
US (1) US5080336A (de)
EP (1) EP0418145B1 (de)
JP (1) JPH0398729A (de)
DE (1) DE69003497T2 (de)
FR (1) FR2651706B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9111510U1 (de) * 1991-09-16 1991-12-05 Barabas, Ewald, Dipl.-Ing., 1000 Berlin Stufenlos verstellbares Aufspannwerkzeug
US5575462A (en) * 1994-08-17 1996-11-19 Blatt; John A. Rotary clamp for a linear actuator
US5634629A (en) * 1994-12-22 1997-06-03 Isi Norgren Inc. Rotary clamp having a common plane mounting arrangement
US5924685A (en) * 1997-06-16 1999-07-20 Webb; Robert M. Adjustable clamp
US9221678B2 (en) * 2008-10-06 2015-12-29 University Of Florida Research Foundation, Inc. Active fixturing for micro/mesoscale, machine tool systems
JP5854220B2 (ja) * 2012-01-27 2016-02-09 Smc株式会社 電動クランプ装置
CN109290600B (zh) * 2018-10-08 2019-10-08 赵文龙 一种五金薄板高效打孔设备
US11326370B2 (en) * 2019-05-30 2022-05-10 Lockheed Martin Corporation Apparatuses, systems, and methods for latching objects
DE102019129678A1 (de) * 2019-11-04 2021-05-06 Andreas Maier Gmbh & Co. Kg Spannvorrichtung zum Einspannen eines Werkstücks
CN112658322A (zh) * 2020-12-11 2021-04-16 国网山东省电力公司曹县供电公司 一种电力工程用钻孔装置
CN113182903A (zh) * 2021-05-14 2021-07-30 昌河飞机工业（集团）有限责任公司 一种内部定心压紧装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE245948C (de) *
US1580083A (en) * 1925-09-12 1926-04-06 Boadle Sidney Charles Cramp
DE750101C (de) * 1938-05-28 1944-12-14 Spannvorrichtung fuer Werkzeugmaschinen
US2395242A (en) * 1943-10-02 1946-02-19 Oscar W Anderson Work clamp
US3575405A (en) * 1968-08-28 1971-04-20 Emmit B Harding Parallel bar clamping device
FR2496530A1 (fr) * 1980-12-24 1982-06-25 Carossino Andre Dispositif pour le bridage de pieces a usiner sur la table d'une machine-outil
FR2538732A1 (fr) * 1983-01-05 1984-07-06 Carossino Freres Dispositif de bridage, notamment pour la fixation de pieces sur une machine-outil
FR2540768B3 (fr) * 1983-02-14 1985-11-15 Carossino Freres Dispositif de bridage de pieces, notamment sur une table de machine-outil
DE3513806A1 (de) * 1985-04-17 1986-10-23 Bodo 2057 Reinbek Schulz Werkstueckniederhalter mit spannhebel
US4887803A (en) * 1989-01-09 1989-12-19 Witt Larry M Power actuated cam clamp

Also Published As

Publication number Publication date
DE69003497D1 (de) 1993-10-28
US5080336A (en) 1992-01-14
JPH0398729A (ja) 1991-04-24
DE69003497T2 (de) 1994-02-17
EP0418145A1 (de) 1991-03-20
FR2651706A1 (fr) 1991-03-15
FR2651706B1 (fr) 1991-11-29

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