EP3078453B1 - Dispositif d'actionnement de levier articulé ou type de came pour le positionnement précis d'un bras pivotant - Google Patents

Dispositif d'actionnement de levier articulé ou type de came pour le positionnement précis d'un bras pivotant Download PDF

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Publication number
EP3078453B1
EP3078453B1 EP16164321.8A EP16164321A EP3078453B1 EP 3078453 B1 EP3078453 B1 EP 3078453B1 EP 16164321 A EP16164321 A EP 16164321A EP 3078453 B1 EP3078453 B1 EP 3078453B1
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EP
European Patent Office
Prior art keywords
piston
rotary
articulated lever
actuating device
axis
Prior art date
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EP16164321.8A
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German (de)
English (en)
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EP3078453A1 (fr
Inventor
Roberto Bottacini
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.)
Pneumax SpA
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Pneumax SpA
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Priority claimed from PCT/EP2015/057783 external-priority patent/WO2016162074A1/fr
Application filed by Pneumax SpA filed Critical Pneumax SpA
Priority to EP16164321.8A priority Critical patent/EP3078453B1/fr
Publication of EP3078453A1 publication Critical patent/EP3078453A1/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
    • B25B5/06—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
    • 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
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction

Definitions

  • the present invention relates to an actuating device of the articulated lever or cam type for the precise positioning of a pivotable arm, as per the preamble of claim 1.
  • An example of such a device is disclosed by EP 1 262 285 A .
  • the present invention relates to an actuating device of the articulated lever or cam type typically used for handling elements during metalworking processes, e.g. in welding lines of the vehicle body construction industry.
  • the actuating devices nowadays used in the vehicle body construction industry typically comprise a sliding control piston which is alternatively operated by an actuator or manually.
  • the control piston is operatively connected to a pivotable arm through interposition of an articulated lever or a cam mechanism in order to induce a pivoting movement of the pivotable arm triggered by the sliding movement of the piston.
  • the displacement triggered by the piston moves the pivotable arm from a non-operating angular position to an operating angular position.
  • the non-operating angular position can be set through an initial adjustment of the stroke of the piston.
  • lateral side of the device refers to any side parallel to the extension of the piston, namely the piston axis
  • bottom and top side of the device refer to the sides perpendicular to the piston axis.
  • the actuating devices In order to set the non-operating position of the pivotable arm, the actuating devices usually comprise adjusting means which act on the piston in order to set its stroke length.
  • the adjusting means are typically positioned at the bottom face of the device, which is usually not easily accessible when the actuating device is mounted in use.
  • document EP 1 262 285 describes a known adjusting means which comprises a threaded piston cooperating with an internally threaded rod.
  • This solution comprises a coaxial sleeve which is slidably mounted outside a rod and is provided with fastening means adapted to fasten the sleeve selectively in a plurality of positions axially spaced along the rod.
  • the relative positioning between sleeve and rod defines the stroke of the rod and therefore the rotary movement of the pivotable arm.
  • the fastening means for fastening the sleeve to the rod are accessible from a lateral side of the actuating device.
  • the axial positions along the rod, at which the sleeve can be fastened are defined by means of a plurality of through holes formed on the rod and spaced apart from each other of a constant pitch.
  • the constant pitch of the seats on the rod corresponds to a rotation of 10° of the pivotable arm. In this way, however, only a discrete adjustment of the operating position of the pivotable arm can be achieved.
  • a further example of easily accessible adjustment means for the adjustment of the operating position of the pivotable arm of an actuating device of the kind of the present invention is described in document DE 10 2012 1030 921 .
  • the device described in DE 10 2012 1030 921 comprises a piston made in two parts (rod and sleeve) which can slide one with respect to the other in order to set a relative position between the two parts and thereby the angular operating position of the pivotable arm. Once the desired relative position is reached, the sliding of the two parts is blocked by means of a headless screw which acts on a fastening element comprised in the sleeve, by pressing it against the rod.
  • the headless screw is accessible from a lateral side of the actuating device so that the adjustment can be easily performed.
  • Document US 4,700,936 describes a clamping device with a movable clamp member actuated by a jack screw driven by an electric motor through a worm meshing with a gear connected to the jack screw.
  • the clamping device of US 4,700,936 does not comprise adjusting means of the stroke of the clamp member and uses the mechanical coupling between the worm and the gear connected to the jack screw for the actuation of the clamp member.
  • Applicant considered the problem of obviating the above mentioned drawbacks and, in particular, of providing an actuating device of the articulated lever or cam type which can be easily and continuously adjusted with respect to the angular non-operative position of its pivotable arm and, at the same time, is capable of reliably maintaining the adjusted non-operative position over time.
  • the present invention proposes an actuating device of the articulated lever or cam type comprising a body coupled to a sliding control piston, the piston being connected to or coupled to actuating means movable along a first piston axis and operatively coupled to a pivotable arm through interposition of an articulated lever or a cam mechanism in order to induce a pivoting movement of the pivotable arm about a first rotational axis perpendicular to the piston axis upon a sliding movement of the actuating means along the piston axis, the pivotable arm being movable between a non-operative angular position and an operative angular position, the actuating means comprising a first and a second part displaceable with respect to one another along the piston axis, and adjusting means for the adjustment of the length of the actuating means characterized in that the adjusting means comprise mechanical coupling means acting on the first part of the actuating means in order to transform a rotary control movement imparted on said coupling means about a second rotary axi
  • the setting imparted by means of the adjusting means of the actuating device according to the invention is reliable over time since it is a direct consequence of the rotary control movement imparted on the mechanical coupling means. In absence of said control movement, no relative displacement of the two parts forming the actuating means is induced.
  • the actuating device according to the present invention allows bringing and maintaining the pivotable arm into its operative position even in absence of an actuation force applied to the control piston.
  • the particular adjusting means used in the actuating device according to the invention allow the articulated lever linkage to reach the over toggle point. Therefore, in case for example of a pneumatic actuation of the piston, the pivotable arm can be brought into its operative position even in absence of air.
  • the present invention may have at least one of the following preferred features; the latter may in particular be combined with each other as desired to meet specific implementation purposes.
  • the two parts of the actuating means comprise a piston rod and a linking element slidably coupled to each other, wherein the linking element is connected to the articulated lever or a cam mechanism.
  • piston rod and the linking element comprise reciprocally coupled threaded surfaces and the rotary control movement imparted on said coupling means about the second rotary axis is transformed into a relative rotation between the piston rod and the linking element.
  • the connecting element is a fork linkage.
  • the second rotary axis is perpendicular to the piston axis.
  • the mechanical coupling means comprise at least one first rotary element adapted to rotate about the second rotary axis, which can be brought into engagement on a second rotary element coaxially constrained to the first part of the actuating means, the rotation of the at least one first rotary element about the second rotary axis when engaged on the second rotary element causing a rotation of the second rotary element about the piston axis.
  • the overall length of the actuating means is thereby varied and consequently the piston stroke. This determines a corresponding variation of the angular non- operative position of the pivotable arm.
  • the fact that the first rotary element engages the second rotary element during adjustment only leads to a further advantage, namely the rotary elements are substantially not subjected to wear.
  • the at least one first rotary element and the second rotary element are toothed elements, preferably toothed crowns or cones.
  • the at least one first rotary element and the second rotary element are adapted to couple between each other by friction.
  • the mechanical coupling means comprise a plurality of first rotary elements each accessible from a lateral side of the device.
  • the at least one first rotary element comprises a seat for receiving an adjustment tool and a blocking element which cooperates with a first seat obtained in the body and with the adjustment tool seat in order to hold the first rotary element into an engagement position with the second rotary element when the adjustment tool is inserted into the adjustment tool seat and to retain the adjustment tool into its seat.
  • the blocking element is a first spherical element retained into a hole obtained in the at least one first rotary element which, at a first end, opens out into the adjustment tool seat.
  • the at least one first rotary element is coupled to first elastic means adapted to force the at least one first rotary element into its disengaged position.
  • the mechanical coupling means comprise an endless screw coupled to the first part of the actuating means so that a rotation of the endless screw determines a displacement of the first part of the actuating means with respect to the second part of the actuating means, wherein the axis of the endless screw is the second rotary axis.
  • the piston rod comprises at least one stopping element which cooperates with a corresponding second seat obtained in the piston in order to substantially maintain the angular position of the piston rod against a rotation about the piston axis.
  • the at least one stopping element is a second spherical element cooperating with second elastic means forcing the second spherical element into a corresponding seat obtained in the piston.
  • the second elastic means is a spring.
  • the piston is pneumatically actuated by means of a cylinder, preferably a double effect cylinder.
  • the piston is actuated by means of an electrical actuator.
  • the second part of the piston actuating means is connected to a manual actuation element for manually operating the articulated lever or a cam mechanism.
  • the articulated lever mechanism is a toggle lever mechanism.
  • the articulated lever mechanism comprises a crank lever.
  • the actuating device is a clamping unit or power clamp.
  • the actuating device is a pivot unit or power pivot.
  • an actuating device of the articulated lever or cam type for the precise positioning of a pivotable arm according to the present invention is globally indicated with 10.
  • the device 10 advantageously comprises a device body 15 and a sliding control piston 11 connected to the body 15.
  • the sliding control piston 11 is coupled to actuating means 12a,12b which slide inside the body 15 and are connected to a mechanism 13 housed inside the body 15.
  • the mechanism 13 induces a rotation of a pivotable arm 14 about a first rotational axis B upon sliding of the piston actuating means 12a,12b along a piston axis A, wherein the first rotational axis B (see fig. 5a or 6a ) is perpendicular to the piston axis A.
  • the mechanism 13 is an articulated lever, however the present invention is also applicable to actuating devices 10 comprising a cam mechanism or other types of mechanisms adapted for inducing a rotation of a pivotable arm 14 upon sliding of the piston actuating means 12a,12b.
  • the articulated lever mechanism 13 is a toggle lever which advantageously assures that in absence of a reversing force, the movement of the pivotable arm cannot be reversed, once the operative position corresponding to the over toggle point of the articulated lever mechanism has been reached.
  • the actuating means comprise a first 12a and a second 12b part displaceable with respect to one another along the piston axis A.
  • the first part of the actuating means is a piston rod 12a and the second part of the actuating means is a fork linkage 12b.
  • the piston rod 12a is coupled to the fork linkage 12b by means of a threaded coupling, so that a rotation of the piston rod 12a determines a relative displacement of the two parts 12a,12b along the piston axis A, particularly a displacement of the fork linkage 12b.
  • the device 10 advantageously comprises adjusting means 20 for the adjustment of the length of the actuating means 12a,12b which are accessible from a lateral side of the actuating device 10.
  • the adjusting means 20 comprise mechanical coupling means 21a,21b,22 which act on the piston rod 12a in order to transform a rotary control movement imparted on the coupling means 21a,21b about a second rotary axis C transversal to the piston axis A into a relative displacement between the piston rod 12a and the fork linkage 12b along the piston axis A.
  • This relative displacement causes a change in the overall length of the actuating means 12a,12b and therefore in the piston stroke. Accordingly, the end-of-stroke position relating to the non-operative position of the pivotable arm 14 is modified, thereby achieving a stepless setting of the said non-operative position.
  • the coupling means 21a,21b,22 comprise two rotary toothed elements 21a,21b adapted to rotate about the second rotary axis C, which can be brought into engagement on a second rotary toothed element 22 which is coaxially constrained to the piston rod 12a.
  • a rotation of the engaged first rotary element 21a,21b about the second rotary axis C causes a rotation of the second rotary element 22 about the piston axis A.
  • This causes a rotation of the piston rod 12a and consequently a displacement of the fork linkage 12b so that the overall length of the piston actuating means 12a,12b is changed.
  • the present invention is also applicable to alternative mechanical coupling means like e.g. rotary elements which couple by friction or an endless screw coupled to a threaded piston rod.
  • the first rotary elements 21a,21b of the mechanical coupling means define a seat 23 for the insertion of an adjusting tool 50, which is better shown in figures 2a and 2b .
  • the first rotary elements 21a,21b also comprise each a blocking element 24 which in the depicted embodiment is a spherical element.
  • the spherical element 24 is retained into a respective hole 24a which is open at two opposite ends.
  • a first end of the through hole 24a opens out into the adjustment tool seat 23 and a second end of the trough hole 24a opens out towards the device body 15 and particularly towards an annular seat 15a obtained in the body 15 substantially at the tool seat 23 of the first rotary elements 21a,21b.
  • the adjusting tool 50 urges the spherical element 24 into the annular seat 15a of the body 15, thereby maintaining the first rotary elements 21a,21b engaged with the second rotary element 22.
  • the spherical element 24 also interferes with the adjusting tool 50 thereby retaining the adjustment tool 50 into its seat 23 and avoiding an accidental fall of the same 50.
  • the first rotary elements 21a,21b also comprise first elastic means 25 adapted to urge the at least one first rotary element 21a,21b into its disengaged position.
  • the first elastic means 25 is a spring wound around the first rotary elements 21a,21b and urging against the device body 15, so that the spring is compressed when the adjusting tool 50 pushes the first rotary element 21a,21b towards the second rotary element 22.
  • the piston rod 12a bears at least one stopping element 30 which cooperates with corresponding second seats 31 obtained in the piston 11 in order to substantially maintain the angular position of the piston rod 12a against a rotation about the piston axis A.
  • the stopping element 30 comprises a couple of second spherical elements 30a cooperating with second elastic means 30b forcing the second spherical elements 30a into the corresponding seats 31.
  • the actuating device 10 is a clamping unit or power clamp and the piston 11 is pneumatically actuated by means of a double effect cylinder 16.
  • the present invention is also applicable to pivoting units also known as power pivots.
  • the clamping unit 10 is actuated by means of an electrical actuator 17.
  • the second part 12b of the piston actuating means 12a,12b is connected to a lever 18 for manually operating the articulated lever mechanism 13.

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

Claims (15)

  1. Dispositif d'actionnement (10) du type levier articulé ou came comprenant un corps (15) couplé à un piston de commande de coulissement (11), le piston (11) étant relié ou couplé à des moyens d'actionnement (12a, 12b) mobiles le long d'un premier axe de piston (A) et couplés de manière fonctionnelle à un bras pivotant (14) par interposition d'un levier articulé ou d'un mécanisme de came (13) afin d'induire un mouvement de pivotement du bras pivotant (14) autour d'un premier axe de rotation (B) perpendiculaire à l'axe de piston (A) lors d'un mouvement de coulissement des moyens d'actionnement (12a, 12b) le long de l'axe de piston (A), le bras pivotant (14) étant mobile entre une position angulaire non-fonctionnelle et une position angulaire fonctionnelle, les moyens d'actionnement (12a, 12b) comprenant des première (12a) et seconde (12b) parties déplaçables l'une par rapport à l'autre le long de l'axe de piston (A), et des moyens d'ajustement (20) pour l'ajustement de la longueur des moyens d'actionnement (12a, 12b), caractérisé par le fait que les moyens d'ajustement (20) comprennent des moyens de couplage mécanique (21a, 21b, 22) agissant sur la première partie (12a) des moyens d'actionnement afin de transformer un mouvement de commande rotatif, conféré auxdits moyens de couplage (21a, 21b, 22) autour d'un second axe de rotation (C) transversal à l'axe de piston (A), en un déplacement relatif entre les première (12a) et seconde (12b) parties des moyens d'actionnement de piston (12a, 12b) le long de l'axe de piston (A), modifiant ainsi la longueur des moyens d'actionnement (12a, 12b).
  2. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 1, dans lequel le second axe de rotation (C) est perpendiculaire à l'axe de piston (A).
  3. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 1 ou 2, dans lequel les moyens de couplage mécanique (21a, 21b, 22) comprennent au moins un premier élément rotatif (21a, 21b) apte à tourner autour du second axe de rotation (C), qui peut être amené en engagement sur un second élément rotatif (22) contraint coaxialement à la première partie (12a) des moyens d'actionnement (12a, 12b), la rotation de l'au moins un premier élément rotatif (21a, 21b) autour du second axe de rotation (C), une fois engagé sur le second élément rotatif (22), entraînant une rotation du second élément rotatif (22) autour de l'axe de piston (A).
  4. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 3, dans lequel l'au moins un premier élément rotatif (21a, 21b) et le second élément rotatif (22) sont des éléments dentés, de préférence des couronnes dentées ou des cônes dentés.
  5. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 3, dans lequel l'au moins un premier élément rotatif (21a, 21b) et le second élément rotatif (22) sont aptes à s'accoupler l'un à l'autre par friction.
  6. Dispositif d'actionnement (10) du type levier articulé ou came selon l'une quelconque des revendications 3 à 5, dans lequel l'au moins un premier élément rotatif (21a, 21b) comprend un siège (23) pour recevoir un outil d'ajustement (50) et un élément de blocage (24) qui coopère avec un premier siège (15a) obtenu dans le corps de dispositif (15) et avec le siège d'outil d'ajustement (23) afin de maintenir le premier élément rotatif (21a, 21b) dans une position d'engagement avec le second élément rotatif (22), lorsque l'outil d'ajustement (50) est introduit dans le siège d'outil d'ajustement (23), et de retenir l'outil d'ajustement (50) dans son siège (23).
  7. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 6, dans lequel l'élément de blocage est un premier élément sphérique (24) retenu dans un trou (24a) obtenu dans l'au moins un premier élément rotatif (21a, 21b) qui, au niveau d'une première extrémité, s'ouvre dans le siège d'outil d'ajustement (23).
  8. Dispositif d'actionnement (10) du type levier articulé ou came selon l'une quelconque des revendications 3 à 7, dans lequel l'au moins un premier élément rotatif (21a, 21b) est couplé à des premiers moyens élastiques (25) aptes à solliciter l'au moins un premier élément rotatif (21a, 21b) dans sa position désengagée.
  9. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 1 ou 2, dans lequel les moyens de couplage mécanique comprennent une vis sans fin couplée à la première partie (12a) des moyens d'actionnement (12a, 12b) de telle sorte qu'une rotation de la vis sans fin détermine un déplacement de la première partie (12a) des moyens d'actionnement (12a, 12b) par rapport à la seconde partie (12b) des moyens d'actionnement (12a, 12b), l'axe de la vis sans fin étant le second axe de rotation (C).
  10. Dispositif d'actionnement (10) du type levier articulé ou came selon l'une quelconque des revendications précédentes, dans lequel les deux parties (12a, 12b) des moyens d'actionnement comprennent une tige de piston (12a) et un élément de liaison (12b) couplés l'un à l'autre de manière coulissante, l'élément de liaison (12b) étant relié au levier articulé ou à un mécanisme de came (13).
  11. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 10, dans lequel la tige de piston (12a) et l'élément de liaison (12b) comprennent des surfaces filetées couplées en va-et-vient et le mouvement de commande rotatif, conféré auxdits moyens de couplage (21a, 21b, 22) autour du second axe de rotation (C), est transformé en une rotation relative entre la tige de piston (12a) et l'élément de liaison (12b).
  12. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 10 ou 11, dans lequel l'élément de liaison (12b) est une bielle à fourche.
  13. Dispositif d'actionnement (10) du type levier articulé ou came selon l'une quelconque des revendications 10 à 12, dans lequel la tige de piston (12a) comprend au moins un élément d'arrêt (30) qui coopère avec un second siège correspondant (31) obtenu dans le piston (11) afin de maintenir sensiblement la position angulaire de la tige de piston (12a) à l'encontre d'une rotation autour de l'axe de piston (A).
  14. Dispositif d'actionnement (10) du type levier articulé ou came selon la revendication 13, dans lequel l'au moins un élément d'arrêt (30) comprend au moins un second élément sphérique (30a) coopérant avec des seconds moyens élastiques (30b) forçant le second élément sphérique (30a) dans ledit siège correspondant (31) obtenu dans le piston (11).
  15. Dispositif d'actionnement (10) du type levier articulé ou came selon l'une quelconque des revendications précédentes, dans lequel le dispositif d'actionnement (10) est une pince électrique ou un pivot électrique.
EP16164321.8A 2015-04-09 2016-04-07 Dispositif d'actionnement de levier articulé ou type de came pour le positionnement précis d'un bras pivotant Active EP3078453B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16164321.8A EP3078453B1 (fr) 2015-04-09 2016-04-07 Dispositif d'actionnement de levier articulé ou type de came pour le positionnement précis d'un bras pivotant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/EP2015/057783 WO2016162074A1 (fr) 2015-04-09 2015-04-09 Dispositif d'actionnement du type à levier articulé ou à cames pour le positionnement précis d'un bras pivotant
EP16164321.8A EP3078453B1 (fr) 2015-04-09 2016-04-07 Dispositif d'actionnement de levier articulé ou type de came pour le positionnement précis d'un bras pivotant

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EP3078453A1 EP3078453A1 (fr) 2016-10-12
EP3078453B1 true EP3078453B1 (fr) 2018-04-04

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700091228A1 (it) * 2017-08-07 2019-02-07 Pneumax S P A Unita’ di attuazione del tipo a leva articolata o a camma con intervallo di accettazione regolabile e metodo di regolazione dell’intervallo di accettazione di tale unita’ di attuazione
IT202000003784A1 (it) * 2020-02-24 2021-08-24 Pneumax S P A Unita’ di attuazione del tipo a leva articolata o a camma ad azionamento elettrico
IT202000003805A1 (it) * 2020-02-24 2021-08-24 Pneumax S P A Unita’ di attuazione del tipo a leva articolata o a camma ad azionamento elettrico

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US4700936A (en) 1986-08-26 1987-10-20 Lamb Technicon Corp. Clamp mechanism
FR2780324B1 (fr) 1998-06-26 2000-08-18 Genus Technologies Dispositif de positionnement, de maintien ou de serrage
US6612557B2 (en) 2001-04-30 2003-09-02 Btm Corporation Adjustable stroke clamp
DE20203790U1 (de) 2002-03-08 2002-07-18 Tünkers Maschinenbau GmbH, 40880 Ratingen Kniehebelspannvorrichtung
ITTO20030814A1 (it) 2003-10-16 2005-04-17 Vep Automation Srl Gruppo di controllo delle posizioni di fine corsa angolare del braccio di serraggio di un dispositivo di chiusura a leva articolata.
ITMI20060834A1 (it) * 2006-04-27 2007-10-28 Univer Spa Apparecchiatura di posizionamento e bloccaggio,con copertura regolabile del braccio di lavoro.
DE102012103092A1 (de) 2012-04-11 2013-10-17 Zf Lenksysteme Gmbh Verfahren zur fortlaufenden bestimmung eines rotorlagewinkels eines elektromotors
US10625382B2 (en) * 2012-08-01 2020-04-21 Delaware Capital Formation, Inc. Toggle lever clamp

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