EP1068050B1 - Kniehebel-spannvorrichtung - Google Patents
Kniehebel-spannvorrichtung Download PDFInfo
- Publication number
- EP1068050B1 EP1068050B1 EP99958119A EP99958119A EP1068050B1 EP 1068050 B1 EP1068050 B1 EP 1068050B1 EP 99958119 A EP99958119 A EP 99958119A EP 99958119 A EP99958119 A EP 99958119A EP 1068050 B1 EP1068050 B1 EP 1068050B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pivot
- tensioning
- tensioning device
- unit
- mounting
- 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
Links
Images
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
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/12—Arrangements for positively actuating jaws using toggle links
- B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
Definitions
- the invention relates to a toggle clamp device, with one arranged on the end face of an actuating device Bearing head on which contains a tension arm Swivel unit around a swivel axis between a release position and a clamping position is pivotally mounted, with an operating rod that plunges into the bearing head the actuator, further with one hand via a first bearing on the actuating rod and on the other hand, at a distance from the swivel axis, via a second Bearing point on the pivot link articulated, and with one provided on the bearing head and for the specification the stop surface serving the clamping position of the clamping arm, which lies in the swivel path of the swivel unit and for the default the clamping position works together with the swivel unit, being arranged so that the swivel unit shortly before reaching the dead center of the toggle lever arrangement comes into contact with the stop surface.
- a toggle clamp device of this type goes out of the US-A-4 905 973. It has one of the swivel unit and the toggle arrangement formed between the intermediate member, by the operating rod mounted on the intermediate link the actuator is activated. When extending the operating rod becomes the swivel unit with your Clamping arm shifted to the clamping position, a retracting operating rod causes a pivoting back into the release position. There is a stationary one for specifying the clamping position End position stop provided on the on the bearing head provided stop surface on which the swivel unit collides when the clamping position is reached.
- Dead center is defined by that of the longitudinal axis the operating rod and the two bearing points connecting imaginary connecting line included angles forms a right angle.
- the initially blunt included is reduced Angle gradually until the dead center is reached, taking the actuating rod then expediently still slightly moves on until the included angle is somewhat is less than 90 °. Moves when passing through dead center the first bearing along a concave end section a positive guidance provided on the bearing head.
- the object of the invention is a toggle lever clamping device to create the type mentioned, in which the wear-promoting Burdens are reduced.
- the articulated connection in the area of at least one of the two bearings is designed so that at least when passing through the dead center a radial relative possibility of movement between the hinged parts is given.
- the clamping position is still defined through the interaction between a bearing head Stop surface and the one containing the tension arm Swivel unit itself. This causes a reduction in the Operation when the impact occurs and accordingly the load on the actuator and their components. Due to the relative possibility of movement between the hinged parts the toggle lever arrangement easily overcome the dead center.
- the mobility can be, for example, by appropriate Design of the bearings and / or by using suitable ones Elastic means can be realized.
- the pivot unit expediently has a rotationally fixed the tension arm connected to the pivot lever on which the second bearing is located and the one with the bearing head Working surface.
- This swivel lever can be a be separate component with respect to the clamping arm, which is non-rotatable on a rotatably mounted on the bearing head and thereby the Bearing pin defining pivot axis sits on which in turn the tension arm is attached in a rotationally fixed manner.
- Such one Arrangement favors the placement of the swivel lever in the Inside the storage head and in the immediate vicinity the operating rod.
- the tension arm itself can be outside of the bearing head so that the bearing head can be carried out with compact dimensions.
- the stop surface on the inside is preferably one extending parallel to the pivot axis of the pivot unit and the pivot axis radially upstream wall of the bearing head intended.
- Swivel unit expediently runs said wall in front of the swivel lever with a right angle to the swivel plane Orientation.
- the end position of the actuating rod can, for example, thereby be specified that one with the operating rod connected piston of the actuator on a cover the actuator comes to the system. Because the moving Facial expressions have already been slowed down, however, is the strain of the piston is only slight here.
- the exemplary toggle lever tensioning device 1 contains one Actuator 2 by a fluid powered Working cylinder and in particular from a pneumatic cylinder is formed. It has an elongated housing 3 with a tube-like middle part 4 and at the end of this fixed end caps 5, 6.
- the interior of the housing 3 is a piston arranged axially displaceable therein 7 axially divided into two working spaces, which are internal to the housing Fluid channels 8 alternate with a fluid Pressurized medium is depressurized or relieved or vented can to cause an axial linear movement of the piston 7.
- pivot unit pivotally mounted on the bearing head 15 there is a generally 16 designated pivot unit pivotally mounted.
- Reference number 17 designated pivot axis is next to the side the axial movement path of the actuating rod 12 and runs perpendicular to their longitudinal axis 18.
- An essential component of the swivel unit 16 is a tension arm 22. It protrudes from the bearing head 15 and can used, for example, in manufacturing and Assembly technology to clamp one or more workpieces.
- the Swiveling of the swivel unit 16 makes it possible Tension arm 22 according to double arrow 23 between that of FIG. 1 apparent clamping position and a not shown To pivot release position relative to the bearing head 15.
- the center of the swivel movement is the swivel axis 17.
- the swiveling movement is caused by the Actuating device 2 and in particular by their Actuating rod 12 in the interior 14 of the bearing head 15 is in drive connection with the swivel unit 16.
- the outer end section 13 of the actuating rod 12 via a one-part or multi-part intermediate link 24 on the Swivel unit 16 articulated.
- the intermediate link 24 is a first Bearing point 25 on the actuating rod 12 rotatably.
- the assigned first axis of rotation is in the drawing with reference number 26 provided. With its opposite end area is, for example, tab-like intermediate link 24 via a second bearing point 27 rotatably articulated on the swivel unit 16, the associated second axis of rotation by reference numeral 28 is marked.
- the two axes of rotation 26, 28 run parallel to the pivot axis 17, the one provided on the swivel unit 16 second axis of rotation 28 runs at a distance from the pivot axis 17.
- the between the second axis of rotation 28 and the Section of the swivel unit 16 extending the swivel axis 17 thus represents a first lever 32, which with the one intermediate lever 24 representing second lever 33 a toggle lever arrangement 34 defined.
- the first lever 32 could be an integral part of the Be swivel unit 16. In favor of a compact structure and a simple assembly, however, it is in the embodiment than separate with respect to the tension arm 22, nevertheless however, pivotally connected to the tension arm 22 pivot lever 35 executed. The more preferred construction makes this especially Fig. 2 clearly.
- the bearing pin that defines the pivot axis 17 36 pivoted on the bearing head 15. It penetrates the storage head 15, from which it protrudes on opposite sides, the one arranged outside the bearing head 15
- Tension arm 22 on the two outer end portions 37 of the Bearing pin 36 is rotatably fixed.
- the bearing head can 15 over two at least partially spaced apart and in particular running parallel to each other have plate-like side walls 38, between which the Interior 14 is located and that of the bearing pin 36 below Interposition of a rotary bearing, not shown crosses.
- the clamping arm 22 can on its the bearing head 15 facing end be forked and the Bearing head 15 with the arms fixed to the bearing pin 36 partially spill over.
- the pivot lever 35 is seated on the interior 14 in a rotationally fixed manner traversing central portion of the bearing pin 36. Starting from this bearing pin 36 it projects to that of the actuating device 2 opposite front of the bearing head 15, where the second bearing 27 is located on the the intermediate link 24, in particular also via a Hinge pin connection, is articulated.
- the first bearing 25 is also expediently under Realized using a second bearing pin 42. This passes through at the front end of the actuating rod 12 provided bearing eye 43 and at the same time the associated End portion of the intermediate member 24, which in the embodiment over two in particular rigidly connected Has tab elements 44, both the bearing eye 43 and also the pivot lever 35 on opposite sides flank.
- the second bearing pin 42 is beyond the intermediate member 24 axially extended on both sides and carries on its end sections in particular rotatably mounted and preferably roll-like trained guide elements 45. These each run in a guide groove 46 on the inner surface of each adjacent side wall 38 of the bearing head 15 is provided are.
- the guide grooves 46 extend parallel to the longitudinal axis 18 and thus in the direction of movement of the actuating rod 12th
- the clamping arm 22 has reached its clamping position when the Swivel unit 16 on a lying in its swivel path and provided on the bearing head 15 stop surface 48 for contact arrives.
- the pivot lever 35 that on the part of the swivel unit 16 cooperates with the stop surface 48.
- the stop surface 48 is expedient on the inside of one between the two side walls 38 extending further side wall 52 of the Bearing head 15 provided that the pivot axis 17 radially is upstream and extends next to the pivot lever 35.
- It expediently represents a further limiting element of the bearing head 15 for its interior 14 is expedient it is located on the tension arm 22 facing side of the bearing head 15. It can be part of the other two side walls 38.
- first angle 54 which is a obtuse angle.
- first angle 54 decreases progressively until first the pivot lever 35 on the stop surface 48 System arrives and can no longer be pivoted. This state expediently presents itself Reaching the dead center of the toggle lever arrangement 32, 33, in the exemplary embodiment even before the first angle 54 forms a right angle.
- the second stop surface 57 a Bearing head 15 provided stop surface defined that hereinafter referred to as the second stop surface 57.
- she is located on the side facing away from the actuating device 2 Side of the bottom 58 of the bearing head 15 which to the Actuator 2 is attached.
- she is expediently directly next to the floor 58 penetrating actuating rod 12 by the second Stop surface 57 can be surrounded concentrically.
- the second stop surface 57 is assigned one on the outside End section 13 of the actuating rod 12 provided counter stop surface 62, which expediently on a radial projection the actuating rod 12 is provided by a on the actuating rod 12 screwed stop element 63 can be formed. Its position on the operating rod 12 is expediently chosen so that the counter stop surface 62 on the second abutment surface 57 for contact arrives before the piston 7 on the rear end cover 6th impacts.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Jigs For Machine Tools (AREA)
Description
- Fig. 1
- eine bevorzugte Bauform der erfindungsgemäßen Kniehebel-Spannvorrichtung bei in der Spannstellung befindlichem Spannarm und teilweise im Längsschnitt gemäß Schnittlinie I-I aus Fig. 2,
- Fig. 2
- die Kniehebel-Spannvorrichtung in axialer Draufsicht auf den Lagerungskopf mit Blickrichtung gemäß Pfeil II aus Fig. 2 und
- Fig. 3
- die Kniehebel-Spannvorrichtung aus Fig. 1 und 2 in einer auf den Lagerungskopf beschränkten Teildarstellung in einer Zwischenstellung des Spannarmes beim Übergang zwischen der Spannstellung und der Freigabestellung.
Claims (10)
- Kniehebel-Spannvorrichtung, mit einem stirnseitig an einer Betätigungseinrichtung (2) angeordneten Lagerungskopf (15), an dem eine einen Spannarm (22) enthaltende Schwenkeinheit (16) um eine Schwenkachse (17) zwischen einer Freigabestellung und einer Spannstellung verschwenkbar gelagert ist, mit einer in den Lagerungskopf (15) eintauchenden Betätigungsstange (12) der Betätigungseinrichtung (2), ferner mit einem einerseits über eine erste Lagerstelle (25) an der Betätigungsstange (12) und andererseits, mit Abstand zu der Schwenkachse (17), über eine zweite Lagerstelle (27) an der Schwenkeinheit (16) angelenkten Zwischenglied (24), und mit einer am Lagerungskopf (15) vorgesehenen und zur Vorgabe der Spannstellung des Spannarmes (22) dienenden Anschlagfläche (48), die in der Schwenkbahn der Schwenkeinheit (16) liegt und zur Vorgabe der Spannstellung mit der Schwenkeinheit (16) zusammenarbeitet, wobei sie so angeordnet ist, dass die Schwenkeinheit (16) schon kurz vor Erreichen des Totpunktes der Kniehebelanordnung an der Anschlagfläche (48) zur Anlage kommt, dadurch gekennzeichnet, dass die Gelenkverbindung im Bereich wenigstens einer der beiden Lagerstellen (25, 27) so ausgeführt ist, dass zumindest beim Durchlaufen des Totpunktes eine radiale relative Bewegungsmöglichkeit zwischen den aneinander angelenkten Teilen gegeben ist.
- Spannvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkeinheit (16) einen drehfest mit dem Spannarm (22) verbundenen Schwenkhebel (35) aufweist, an dem sich die zweite Lagerstelle (27) befindet und der mit der lagerkopfseitigen Anschlagfläche (48) zusammenarbeitet.
- Spannvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Schwenkhebel (35) drehfest auf einem am Lagerungskopf (15) drehbar gelagerten und die Schwenkachse (17) definierenden Lagerbolzen (36) sitzt, an dem außerdem der Spannarm (22) drehfest fixiert ist.
- Spannvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Schwenkhebel (35) im Innern des Lagerungskopfes (15) angeordnet ist.
- Spannvorrichtung nach Anspruch 4 in Verbindung mit Anspruch 3, dadurch gekennzeichnet, dass der Spannarm (22) außerhalb des Lagerungskopfes (15) an dem Lagerbolzen (36) festgelegt ist.
- Spannvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Anschlagfläche (48) an der Innenseite einer sich parallel zur Schwenkachse (17) der Schwenkeinheit (16) erstreckenden und der Schwenkachse (17) radial vorgelagerten Wand (52) des Lagerungskopfes (15) vorgesehen ist.
- Spannvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Kontakt zwischen Schwenkeinheit (16) und Anschlagfläche (48) etwa 3 - 5° vor Erreichen des Totpunktes erfolgt.
- Spannvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass mit den linear bewegten Bestandteilen (7, 12) der Betätigungseinrichtung (2) zusammenwirkende Hubbegrenzungsmittel (5, 55) vorhanden sind, die wirksam werden, nachdem die Schwenkeinheit (16) an der Anschlagfläche (48) zur Anlage gelangt ist.
- Spannvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Hubbegrenzungsmittel (5, 55) erst nach dem Überschreiten des Totpunktes der Kniehebelanordnung wirksam werden.
- Spannvorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass zur Vorgabe der Freigabestellung eine außerhalb der Betätigungseinrichtung (2) am Lagerungskopf (15) vorgesehene zweite Anschlagfläche (57) vorhanden ist, auf die beim Einfahren der Betätigungsstange (12) eine an dieser vorgesehene Gegenanschlagfläche (62) auflaufen kann.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29901363U | 1999-01-27 | ||
DE29901363U DE29901363U1 (de) | 1999-01-27 | 1999-01-27 | Kniehebel-Spannvorrichtung |
PCT/EP1999/009082 WO2000044531A1 (de) | 1999-01-27 | 1999-11-24 | Kniehebel-spannvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1068050A1 EP1068050A1 (de) | 2001-01-17 |
EP1068050B1 true EP1068050B1 (de) | 2004-08-18 |
Family
ID=8068528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99958119A Expired - Lifetime EP1068050B1 (de) | 1999-01-27 | 1999-11-24 | Kniehebel-spannvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6279887B1 (de) |
EP (1) | EP1068050B1 (de) |
DE (2) | DE29901363U1 (de) |
WO (1) | WO2000044531A1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6199846B1 (en) * | 1998-04-28 | 2001-03-13 | Isi Norgren, Inc. | Electric power operated clamp with spring lock |
DE29910607U1 (de) * | 1999-06-17 | 1999-08-12 | DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach | Spannvorrichtung zum Festspannen von Werkstücken |
DE10013874B4 (de) * | 2000-03-21 | 2013-04-18 | De-Sta-Co Metallerzeugnisse Gmbh | Kniehebelspannvorrichtung mit Öffnungswinkelbegrenzung |
US6505824B2 (en) * | 2001-01-16 | 2003-01-14 | Dynamic Plastic Solutions | Clamping frame for plastic sheet thermoforming apparatus |
US6627833B2 (en) * | 2002-01-30 | 2003-09-30 | United Technologies Corporation | Fixture for securing a workpiece |
US7114408B2 (en) * | 2003-01-30 | 2006-10-03 | Delaware Capital Formation, Inc. | Drop away leaf pivot unit |
US7815176B2 (en) | 2003-09-11 | 2010-10-19 | Phd, Inc. | Lock mechanism for pin clamp assembly |
US7182326B2 (en) | 2004-04-02 | 2007-02-27 | Phd, Inc. | Pin clamp |
US7516948B2 (en) | 2004-04-02 | 2009-04-14 | Phd, Inc. | Pin clamp accessories |
DE102004053514B4 (de) * | 2004-10-29 | 2010-04-29 | Festo Ag & Co. Kg | Spannvorrichtung zum Spannen von Werkstücken mit Haupt- und Spannantrieb |
DE102004053515B3 (de) * | 2004-10-29 | 2006-03-02 | Festo Ag & Co. | Spannvorrichtung zum Spannen von Werkstücken |
US7448607B2 (en) | 2004-12-15 | 2008-11-11 | Phd, Inc. | Pin clamp assembly |
DE102006022950A1 (de) * | 2006-05-17 | 2007-11-22 | De-Sta-Co Europe Gmbh | Spannvorrichtung zum Festlegen von Werkstücken |
EP2138266A4 (de) * | 2007-03-15 | 2012-05-16 | Kosmek Ltd | Kniehebelklemmvorrichtung |
WO2008157698A2 (en) | 2007-06-19 | 2008-12-24 | Phd, Inc. | Pin clamp assembly |
WO2009155261A1 (en) | 2008-06-18 | 2009-12-23 | Phd, Inc. | Strip off pin clamp |
EP2177320A1 (de) * | 2008-10-15 | 2010-04-21 | UNIVER S.p.A. | Irreversible Kniehebelantriebsvorrichtung |
CN109531206A (zh) * | 2018-12-28 | 2019-03-29 | 佛山市普拉迪数控科技有限公司 | 一种行李架加工设备 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4637597A (en) * | 1982-09-29 | 1987-01-20 | De-Sta-Co Division/Dover Corporation | Locking power clamp |
US4905973B1 (en) * | 1989-01-11 | 1994-07-05 | John A Blatt | Power operated clamp with externally mounted adjustable clamp arm |
US5575462A (en) * | 1994-08-17 | 1996-11-19 | Blatt; John A. | Rotary clamp for a linear actuator |
DE29614630U1 (de) | 1996-08-23 | 1998-01-02 | Werner Turck GmbH & Co. KG, 58553 Halver | Anordnung zur sensorischen Ermittlung der Bewegungsendstellungen eines Kraftspanners |
DE59702526D1 (de) | 1996-12-17 | 2000-11-30 | Sta Co Mettallerzeugnisse Gmbh | Kniehebelspannvorrichtung mit Einrichtung zur Endstellungsanzeige |
JP4099729B2 (ja) * | 1997-03-05 | 2008-06-11 | Smc株式会社 | シリンダ装置 |
DE19732600C2 (de) | 1997-07-29 | 2000-03-30 | Benteler Werke Ag | Bauteilspanner |
DE29713944U1 (de) * | 1997-08-05 | 1997-10-02 | Tünkers Maschinenbau GmbH, 40880 Ratingen | Druckmittelbetätigbare Kniehebelspannvorrichtung |
-
1999
- 1999-01-27 DE DE29901363U patent/DE29901363U1/de not_active Expired - Lifetime
- 1999-11-24 US US09/646,469 patent/US6279887B1/en not_active Expired - Fee Related
- 1999-11-24 DE DE59910286T patent/DE59910286D1/de not_active Expired - Lifetime
- 1999-11-24 WO PCT/EP1999/009082 patent/WO2000044531A1/de active IP Right Grant
- 1999-11-24 EP EP99958119A patent/EP1068050B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6279887B1 (en) | 2001-08-28 |
DE59910286D1 (de) | 2004-09-23 |
EP1068050A1 (de) | 2001-01-17 |
WO2000044531A1 (de) | 2000-08-03 |
DE29901363U1 (de) | 1999-05-06 |
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