EP2147749B1 - Elément de distance d'un dispositif destiné à la fixation amovible d'un élément sur un dispositif de support et dispositif correspondant - Google Patents

Elément de distance d'un dispositif destiné à la fixation amovible d'un élément sur un dispositif de support et dispositif correspondant Download PDF

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Publication number
EP2147749B1
EP2147749B1 EP09008192A EP09008192A EP2147749B1 EP 2147749 B1 EP2147749 B1 EP 2147749B1 EP 09008192 A EP09008192 A EP 09008192A EP 09008192 A EP09008192 A EP 09008192A EP 2147749 B1 EP2147749 B1 EP 2147749B1
Authority
EP
European Patent Office
Prior art keywords
clamping
spacer
spacer element
arms
elements
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.)
Not-in-force
Application number
EP09008192A
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German (de)
English (en)
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EP2147749A1 (fr
Inventor
Dieter Mengemann
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Individual
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Individual
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Publication of EP2147749A1 publication Critical patent/EP2147749A1/fr
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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
    • B25B5/006—Supporting devices for clamps

Definitions

  • the invention relates to a spacer element of a device for releasably securing a part to a support device, in particular for releasably clamping a workpiece to a clamping device of a processing machine, and to an associated device.
  • a device for clamping workpieces on a platen in which a plurality of stack elements are arranged between a base element and a cover element, each having a bore in which a clamping element is rotatably mounted.
  • the clamping element of the stacking element can be brought into rotatable connection with further clamping elements of adjacent stacking elements.
  • a screwed onto the clamping element of the cover element clamping nut braces the structure of several stack elements, wherein by selecting the number and size of the individual stack elements a tension tower of predetermined height can be assembled.
  • the DE 103 26 702 A1 shows a Distantelement a device for clamping according to the preamble of claim 1.
  • the invention has for its object to provide a spacer element of a device for releasably securing a part to a support device and an associated device, the permanently high
  • a clamping element is rotatably mounted in the spacer element, which is releasably engageable with other clamping elements of adjacent further spacer elements of the device in non-rotatable and tensile forces transmitting connection.
  • the spacer element has in one piece training two legs and a connecting portion arranged therebetween.
  • the spacer element is substantially C-shaped. In the unstressed initial state, the two legs are aligned transversely to the extension of the connecting portion and / or transversely to the extension of the clamping element.
  • the connecting portion is aligned parallel to the extension of the clamping element.
  • the clamping element is rotatably mounted in the spacer element and axially movable relative to the spacer element in any case within predeterminable limits. Due to the C-shape, the spacer element is particularly easy to handle, especially tangible. In addition, the mass of the spacer element is reduced by the C-shape even when using high-strength materials.
  • the spacer element is made of a high-strength, preferably homogeneous material, for example made of steel, high-strength aluminum or as a casting, for example of a nodular cast iron or nodular cast iron, such as GGG-60.
  • the clamping element can be formed by a cylindrical section, in particular circular cylindrical body, at whose front end faces a contour is formed, which allows to enter with a further clamping element of an adjacent spacer element or other element of the device releasably rotatable and tensile forces transmitting connection.
  • the legs integrally formed with the connecting portion in a spaced-apart from the connecting portion with each other aligned bores for the passage of the clamping element.
  • the legs may be substantially parallel to each other and transverse to the connecting portion and spaced from each other.
  • the connecting portion is arranged off-center with respect to the extension of the legs and / or spaced from the edge of the legs.
  • the opening for the passage of the clamping element is arranged at or near a free end of the legs.
  • the torque for the deflection of the leg relative to the connecting portion is relatively large.
  • the known spacer elements is intentionally dispensed with a stiffening in the region of the opening for the clamping element in order to make a resilient deformation of the spacer element, in particular a deflection of the two legs, possible because a greater spring travel can be provided, both in appearance ensured by vibration and in the case of material fatigue secure fixation of the part to be determined.
  • the section of the legs, on which the opening is arranged can be made thicker with respect to a further, in particular in the direction of the connecting portion adjacent portion.
  • the spacer element integrally has a stiffening section which extends in a space bounded on three sides by the two legs and the connecting section.
  • the stiffening portion may connect the connecting portion with the two legs and / or the two legs continuously.
  • the stiffening portion may be arcuate in the manner of a rib, in particular narrower than the connecting portion or the legs and / or be bent.
  • the stiffening portion may have on the edge opposite the connecting portion at least partially a concave contour and / or a rectilinear contour.
  • the stiffening portion in a direction transverse to the longitudinal extent of the legs and transversely to the longitudinal extent of the connecting portion has a smaller extent than the connecting portion.
  • the stiffening portion may be arranged centrally in this direction with respect to the connecting portion.
  • a further stiffening portion which is otherwise formed as described above, in particular also extends in the three sides of the connecting portion and the two leg portions limited space.
  • the stiffening section extends as far as the opening for the tensioning element which is disposed at an end of the legs remote from the connecting section.
  • the stiffening section can be flush in the thickened section of the end of the limbs which has the opening for the passage of the tensioning element.
  • the clamping element is rotatably but captively fixed to the spacer element by means of a arranged in the region between the legs securing element. In the area between the two legs, the clamping element is accessible from the outside. In this Area, the clamping element may have one or more preferably circumferentially encircling grooves, in each of which a clamping ring is releasably insertable as a securing element.
  • the outer diameter of the clamping ring used is greater than the opening in the leg for the passage of the clamping element, so that a captive fixing of the clamping element is given to the spacer element by the inserted fuse element.
  • the surfaces of the legs facing the adjacent elements of the device integrally form positioning elements which cooperate with corresponding positioning elements of the adjacent elements of the device and effect a predeterminable positioning of adjacent elements of the device relative to one another.
  • at least one male and one female positioning element is arranged on each surface, for example a pin and a bore, which can also be formed as a blind hole.
  • the positioning elements are preferably arranged on or near the edge of the legs, in particular on one of the opening for the passage of the clamping element opposite end of the legs.
  • the invention also relates to a device for releasably securing a part to a carrying device, in particular for releasably clamping a workpiece to a clamping device of a processing machine.
  • the support means may be a groove table or the like, on which the workpiece can be fixed by means of the device.
  • the device in this case comprises at least one spacer element as described above, and moreover a closing element for fixing the device to the carrying device and / or a further closing element, the one Can form support for a clamping element.
  • the closing element may be a base element which is associated with the carrying device, in particular rests or bears against the carrying device.
  • the further closing element may be a head element, which is spaced from the carrying device, in particular closes the device upwards.
  • the closing element and the further closing element can be designed as identical parts.
  • the terminating elements differ from the spacer elements, inter alia, in that they have a positioning element only on one side, namely on the side assigned to the adjacent spacer element.
  • the end elements also have an opening for the passage of a clamping element.
  • the clamping element of the closing element or of the further closing element can have an external thread by means of which the closing element or the further closing element and the spacer elements can be fixed by screwing a nut to the carrying device.
  • the Fig. 1 shows a perspective view of an embodiment of a device 1 according to the invention for releasably fixing a partially illustrated part 2, for example, a workpiece to be machined, on a support means 4, which is in the embodiment of a jig or a clamping table of a machine tool.
  • the device 1 has a plurality of spacer elements 10, 12, 14, 16, which are all constructed substantially the same, but each having a different extent in the longitudinal direction.
  • the spacer elements 10, 12, 14, 16 together with one of the jig 4 facing end element 6 and with a further closing element 8 at the opposite end of the jig 4 a tension tower whose height by choice and number of successively arranged spacer elements 10, 12, 14th , 16 and is adaptable to the respective part 12.
  • An advantage here is also that the tensioning tower can be modularly assembled by juxtaposing a plurality of spacer elements 10, 12, 14, 16 and thereby results in a manageable device, in particular taking into account the considerable mass of the individual elements.
  • the further end element 8 forms a support for a clamping element 20, by means of which the part 2 can be clamped on the clamping device 4 and thereby fixed.
  • the clamping element 20 is placed on a height-adjustable with respect to the further closing element 8, for example by a threaded support plate 28.
  • the clamping element 18 has a passage opening for a clamping element 32 of the further closing element 8, so that by means of a clamping nut 34, the clamping element 18 in the direction of the part 2 can be tensioned.
  • a clamping wedge 36 is disposed between the clamping element 18 and the part 2.
  • a clamping element 20, 22, 24, 26 is rotatably mounted in each of the spacer elements 10, 12, 14, 16, a clamping element 20, 22, 24, 26 is rotatably mounted.
  • the clamping elements 20, 22, 24, 26 can with other clamping elements 20, 22, 24, 26 of adjacent further spacer elements 10, 12, 14, 16 as well as with clamping elements 32 of the closing element 6 and the other end element 8 releasably brought into non-rotatable and tensile forces transmitting connection become.
  • the Fig. 2 shows a perspective view of an exploded view of another embodiment of a device 101 according to the invention, which consists of a spacer element 110 and a closing element 106 and a further closure element 108 is composable.
  • the spacer element 110 has two legs 142, 144 in one piece and a connecting section 146 arranged therebetween.
  • the legs 142, 144 which are formed integrally with the connecting sections 146, have aligned openings 148, 150 in a region spaced from the connecting section 146 for the passage of the leg Clamping element 120.
  • the openings 148, 150 are circular cylindrical bores, which are arranged in a portion of the legs 142, 144, which are thickened relative to an arranged in the direction of the connecting portion 146, in particular with respect to an adjacent portion.
  • the clamping element 120 has a central circular cylindrical section, which has a smaller outer diameter compared to axially end-side sections.
  • the axially end-side sections of the tensioning element 120 have, at least in sections, a circular-cylindrical outer surface, by means of which the tensioning element 120 is rotatably mounted in the openings 148, 150.
  • a securing element 152, 154 is arranged, which is formed in the exemplary embodiment by an inserted into a groove retaining ring.
  • the clamping element 120 each have a coupling element 156, 158, by means of which the clamping element 120 with the clamping element 138 of the closing element 106 on the one hand and with the clamping element 132 of the further closing element 108 on the other hand releasably in rotationally fixed and tensile forces transmitting connection can be brought.
  • the clamping elements 138, 132 have suitable coupling elements 160, 162.
  • the coupling elements 156, 158, 160, 162 are formed claw-like or hook-like in the embodiment.
  • the flexural rigidity of the spacer element 110 is also determined by a stiffening section 164 which extends in a space bounded on three sides by the two legs 142, 144 and the connecting section 146.
  • the stiffening portion 164 connects in the manner of a Austeifungsrippe the two legs 142, 144 together and with the connecting portion 146.
  • the stiffening portion 164 is in a direction transverse to the longitudinal extent of the legs 142, 144 and transversely to the longitudinal extent of the connecting portion 146 centrally with respect to arranged the connecting portion 146 and has a smaller extent than the connecting portion 146.
  • the stiffening section 164 which preferably has plane-parallel side surfaces, merges flush into the thickened end section of the legs 142, 144.
  • the spacer element 110 also has, on the side of the connecting section 146 opposite the clamping element 120, a further stiffening section 166 which stiffens the extensions of the legs 142, 144 which extend on this side.
  • the legs 144, 142 each have two complementary positioning elements 172, 174, which may be integrally formed by the legs 144, 142. wherein a first positioning element 172 is formed as a circular cylindrical pin is and the corresponding second positioning member 174 as a cylindrical bore, in particular blind hole.
  • the end element 106 has a plate-shaped main body 176, which likewise forms positioning elements 172, 174 preferably integrally on its surface facing the spacer element 110.
  • the base body 176 has an opening 178 for the passage of a clamping element 138, which is rotatably mounted in the opening 178.
  • the clamping element 138 At its opposite end of the coupling element 162, the clamping element 138 on an external thread, by means of which the clamping element 138 with a arranged in the clamping device 4 nut, for example a nut, can be screwed.
  • the further closing element 108 is formed, in particular also has this positioning elements 172, 174, by means of which the further closing element 108 can be connected in predetermined position with the spacer element 110, in particular in flush contact with the leg 142.
  • the closing element 106 and the further end element 108 can be designed as identical parts.
  • the device 101 may also be composed of a plurality of identical spacer elements 110 or of a plurality of spacer elements 110 with different longitudinal extension, while maintaining the terminating element 106 and the further terminating element 108, such that different heights of the device 101 can be realized in a modular manner.
  • the Fig. 3 shows a perspective view of an exploded view of another embodiment of a device according to the invention 201, which is composed of a spacer element 210 and a closing element 206 and a further closing element 208.
  • the coupling elements 256, 258 of the spacer element 210 as well as the coupling elements 260, 262 of the end element 206 and of the further terminating element 208 form a multi-stage jaw coupling in which a total of four claws are arranged one above the other like a staircase.
  • the individual claws each have a substantially rectangular engagement contour and each extend over the entire extent of the clamping elements 220, 232, 238.
  • the Fig. 4 shows a perspective view of an embodiment of a spacer element 310 according to the invention from the back and from below.
  • the further stiffening section 366 stiffens the sections of the legs 342, 344 projecting beyond the connecting section 346 on the side opposite the clamping element 320.
  • the further stiffening section 366 corresponds in terms of its position and thickness to the stiffening section 364.
  • the clamping element 320 has an axial over its entire Length substantially constant outside diameter.
  • a securing element 352, 354 is introduced into two adjacent grooves, by means of which the clamping element 320 can be fixed captively on the spacer element 310.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Centrifugal Separators (AREA)

Claims (12)

  1. Elément (110) d'entretoisement d'un dispositif (1) pour la fixation amovible d'une pièce (2) sur un dispositif (4) de support, notamment pour le serrage amovible d'une pièce sur un dispositif de blocage d'une machine d'usinage, dans lequel, dans l'élément (110) d'entretoisement, est monté tournant un élément (120) de blocage, qui transmet des forces de traction et qui, de manière amovible, peut être mis en liaison fixe en rotation et transmettant des forces de traction, avec d'autres éléments (22, 24, 26) de blocage d'autres éléments (12, 14, 16) d'entretoisement voisins ou d'autres éléments du dispositif (1), caractérisé en ce que l'élément (110) d'entretoisement comporte deux branches (142, 144) et une partie (146) de liaison disposée entre elles, et en ce que les branches formées d'une seule pièce avec la partie (146) de liaison ont, dans une zone à distance de la partie (146) de liaison, des ouvertures (148, 150) alignées entre elles pour le passage de l'élément (120) de blocage.
  2. Elément (110) d'entretoisement suivant la revendication 1, caractérisé en ce que les deux branches peuvent être déviées d'une manière élastique comme un ressort par rapport à la partie de liaison.
  3. Elément (110) d'entretoisement suivant la revendication 1 ou l'une des revendications précédentes, caractérisé en ce que l'ouverture (148, 150) pour le passage de l'élément (120) de blocage est placée sur ou près d'une extrémité libre de la branche (142, 144).
  4. Elément (110) d'entretoisement suivant la revendication 1 ou l'une des revendications précédentes, caractérisé en ce que l'élément (110) d'entretoisement comporte d'une seule pièce une partie (164) de rigidification, qui s'étend dans un espace délimité de trois côtés par les deux branches (142, 144) et par la partie (146) de liaison.
  5. Elément (110) d'entretoisement suivant la revendication 4, caractérisé en ce que la partie (164) de rigidification relie dans l'espace délimité de trois côtés la partie (146) de liaison aux deux branches (142, 144).
  6. Elément (110) d'entretoisement suivant la revendication 4 ou 5, caractérisé en ce que la partie (164) de rigidification a, dans une direction transversalement à l'étendue longitudinale de la branche (142, 144) et transversalement à l'étendue longitudinale de la partie (146) de liaison, une étendue plus petite que celle de la partie (146) de liaison.
  7. Elément (110) d'entretoisement suivant l'une des revendications précédentes 4 à 6, caractérisé en ce que la partie (164) de rigidification va jusqu'à une partie de la branche (142, 144) éloignée de la partie (146) de liaison où l'ouverture (148, 150) pour l'élément (120) de blocage est placée.
  8. Elément (110) d'entretoisement suivant la revendication 1 ou l'une des revendications précédentes, caractérisé en ce que l'élément (120) de blocage est fixé de manière à pouvoir tourner mais de manière imperdable sur l'élément (110) d'entretoisement au moyen d'un élément (152, 154) de sécurité disposé dans la zone comprise entre les deux branches (142, 144).
  9. Elément (110) d'entretoisement suivant la revendication 1 ou l'une des revendications précédentes, caractérisé en ce que les surfaces des branches (142, 144) tournées vers les éléments voisins du dispositif (1) forment d'une seule pièce au moins un élément (172, 174) de positionnement, qui coopère avec un élément (172, 174) correspondant de positionnement de l'élément voisin du dispositif (1), et positionne ainsi l'élément voisin du dispositif (1).
  10. Elément (110) d'entretoisement suivant la revendication 9, caractérisé en ce que l'élément (172, 174) de positionnement est constitué sous la forme d'un tenon et l'élément (172, 174) de positionnement correspondant sous la forme d'un trou.
  11. Dispositif (1) pour la fixation amovible d'une pièce (2) suivant un dispositif (4) de support, notamment pour le serrage amovible d'une pièce sur un dispositif de blocage d'une machine d'usinage, comprenant un élément (10) d'entretoisement suivant la revendication 1 ou l'une des revendications précédentes et comprenant un élément (6) de fermeture pour la fixation du dispositif (1) sur le dispositif (4) de support et/ou sur un autre élément (8) de fermeture, qui forme un support pour un élément (18) de serrage.
  12. Dispositif (1) suivant la revendication 11, caractérisé en ce que l'élément (6) de fermeture et l'autre élément (8) de fermeture sont des pièces identiques.
EP09008192A 2008-07-21 2009-06-23 Elément de distance d'un dispositif destiné à la fixation amovible d'un élément sur un dispositif de support et dispositif correspondant Not-in-force EP2147749B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008033996A DE102008033996A1 (de) 2008-07-21 2008-07-21 Distanzelement einer Vorrichtung zum lösbaren Festlegen eines Teils an einer Trageinrichtung und zugehörige Vorrichtung

Publications (2)

Publication Number Publication Date
EP2147749A1 EP2147749A1 (fr) 2010-01-27
EP2147749B1 true EP2147749B1 (fr) 2011-08-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09008192A Not-in-force EP2147749B1 (fr) 2008-07-21 2009-06-23 Elément de distance d'un dispositif destiné à la fixation amovible d'un élément sur un dispositif de support et dispositif correspondant

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EP (1) EP2147749B1 (fr)
AT (1) ATE518626T1 (fr)
DE (1) DE102008033996A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011107722B3 (de) 2011-07-18 2012-10-31 Hohenstein Vorrichtungsbau Und Spannsysteme Gmbh Vorrichtung mit Sicherheitskomponenten
EP4392202A1 (fr) * 2021-08-26 2024-07-03 Sew-Eurodrive GmbH & Co. KG Structure de serrage pour le serrage d'une pièce à usiner, en particulier d'un carter de transmission
DE102022122691A1 (de) * 2022-09-07 2024-03-07 Andreas Maier Gmbh & Co. Kg Zwischenelement zum Anordnen zwischen einer Spannvorrichtung und einem Untergrund und ein Zwischenelement umfassender Spannturm
CN118238078A (zh) 2022-12-22 2024-06-25 Sew-工业减速机(天津)有限公司 用于保持待加工的工件的保持设备
WO2024132192A1 (fr) 2022-12-22 2024-06-27 Sew-Eurodrive Gmbh & Co. Kg Dispositif de maintien pour maintenir une pièce à usiner

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH577360A5 (fr) 1973-02-08 1976-07-15 Muellheim Ag Utilis
DE2808667C2 (de) * 1977-03-10 1984-11-22 André Cergy Carossino Spannvorrichtung zum Festspannen von Werkstücken
DE3723631C1 (en) * 1987-07-17 1988-02-25 Hardo Heuer Device for clamping workpieces
DE10326702B4 (de) * 2003-06-13 2007-11-15 Karl-Heinz Lenzkes Aufbauelement zum Aufspannen eines Werkstücks auf einem Spanntisch
DE10344430A1 (de) * 2003-09-25 2004-11-04 Daimlerchrysler Ag Spannvorrichtung
US20070138724A1 (en) * 2005-12-16 2007-06-21 Black & Decker Clamp Device

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DE102008033996A1 (de) 2010-02-25
ATE518626T1 (de) 2011-08-15
EP2147749A1 (fr) 2010-01-27

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