DE7504062U - Jig - Google Patents

Description

O "Ή · ΟΙΜ ..- ΙΝ« · | «. SC. ''BIPL.-KHVS * DH. DIPL. -PHVS.

HÖQER - LEGAL RIGHT - QI ^ IESSBACH - HAECKER PATENT LAWYERS IN STUTTGART

Λ 41 084 b

y - 35

10-February 197 5

Bessey & Son company

7 Stuttgart-Obertürkheim Augsburgerstr. 708

Jig

The invention relates to a clamping device with a variable span for clamping or holding objects with a hinged to a carrier, pivotable with the help of a toggle lever relative to an abutment and in its clamping position lockable swivel lever.

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The present invention is based on an object To create clamping device with the help of which workpieces are securely clamped or. can be held, the height of which in can vary widely. To solve this problem, the invention makes use of a clamping device with the features of the construction described above, in which, according to the invention, the abutment assigned to your pivot lever Has the shape of a profile rod which can be moved longitudinally perpendicular to the lever axis and parallel to the pivot plane of the pivot lever.

A clamping device characterized by these features allows the pivot lever, which applies the clamping pressure to the transferring the work piece to be clamped or To move the span accordingly steplessly, with the carrier holding the pivot lever when tightening or holding a workpiece like a sliding bracket that is slidably guided on a screw clamp slide rail Clamped automatically by the leverage and thus a secure workpiece holder is guaranteed. pre-condition this, however, is that the profile bar is fixed relative to the workpiece before the pivoting lever is pivoted.

It turns out that the clamping device, depending on how the length of the profile bar is selected, either has an approximately pincer-like design or the characteristics of a special device, in the latter case The case of the profile bar itself does not act as attacking the workpiece Must serve abutment.

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With a roughly pincer-like training it is accordingly deceptive the swivel lever one and the profile bar the other gripper jaw, while bvi a construction form deviating from the pliers-like training, the profile bar at its upper or lower unde must be anchored in a bracket that a movement of the profile bar in the direction of its longitudinal axis does not allow. The latter possible form of construction allows with a correspondingly long profile bar, extremely large span widths. With both possible forms of construction, there is generally a significant advantage that the actual process the workpiece clamping with a handle, namely through the relatively little force required actuation of the toggle lever, can be done.

This already includes clamping devices of the type described at the beginning in the form of the so-called 'Irip pliers to the state of the art. With these pliers, the carrier forms one of the pliers legs, while the other pliers legs are formed by the one lifting alarm one of the two forming the toggle lever and on the pivot lever articulated lever formed v: ird, the beyond the hip knee is extended. The abutment provided on the carrier is in this case held by one of the tong jaws rigidly connected to the carrier formed, while the pivot lever forms the other jaw.

These known grip pliers also offer the advantage of making a cross with little effort, a reliable one To achieve holding or clamping of the workpiece ensuring clamping pressure, but is their serious disadvantage in the

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to see small spans that can be adjusted with such pliers. The usual grip pliers have for example Spans up to 15 or 30 or 30 now, so that they can be used to hold workpieces of great height are useless. Another disadvantage is that the required span can only be adjusted in a time-consuming manner by means of an adjusting screw can accomplish and that pliers with a larger span, for example 45 mm, a length of 300 mm and have more and are therefore very unwieldy and difficult to handle. Another major disadvantage of the Grin-tong construction consists in that the two The jaws of the pliers move relative to one another when the span is increased and thereby also get out of their parallel position, see above that workpieces of any shape cannot be clamped.

As for you: inventive clamping device, so It is advantageous if the profile bar is guided in an eyelet of the leg-like carrier and in cross section that Has profile of a screw clamp slide. Conveniently, one can detect a profile rod on the carrier provide in order to have the possibility for the clamping or /. Holding of those requiring the same span, e.g. Workpieces to be processed in series to be able to fix the carrier on the profile bar in such a way that for clamping or /. Hold only the actuation of the knee lever in each case, however, it is no longer necessary to apply the pivot lever and thus to adjust the carrier relative to the profile bar. Dei a pliers-like design of the clamping device v / eist the profile bar in the plane de ;; Swivel lever and

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this opposite Spannbügeli on, which is expediently at least the free end piece of the pivot lever extends in the direction of the clamping bracket and preferably both free end pieces of these parts are aligned. In an advantageous embodiment of a clamping device designed in this way is at least at the free end of the pivot lever and preferably also at the free end of the profile bar or Clamping bracket a pivot axis that is parallel to the pivot axis of the pivot lever, preferably difficult to pivot Tendon, arranged. This Spanngieider that due their pivotability are also able to lay full surface on inclined surfaces, can be designed in various ways be. You can, for example, flat and / or be designed in the manner of a prism so that tubular workpieces or round materials can also be clamped with their help permit. Furthermore, they can be straight or towards one another on their contact side at a distance from one another have flat legs, so that the jig to a certain extent a welding gun forms to butt blocks, profile rails or pipes running along the long sides or to be welded together at an angle. Another advantageous construction variant can consist in the fact that the tension members each have a This rotatable and preferably lockable arranged prism carry or that the clamping members themselves pincer jaws form a conventional gripping pliers, in particular flat-nose pliers. Another advantageous development of such a The clamping device can consist of arranging the clamping bracket on the profile rod in an adjustable and preferably lockable manner, so that there is once the. "! ility, this clamp

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to be exchanged for a clamp of different dimensions and, on the other hand, the profile rod relative to the carrier in this way it can be set that in certain cases of use, especially in confined spaces, the Clamping device, does not stand in the way and thereby impair the use of the clamping device.

Finally, the tendons can also be angular and with their free legs directed towards one another, see above that it is possible to have special, for example bush-like shaped pieces with their bottoms in mutual contact to keep.

If the clamping device is designed as a special device for clamping workpieces with a large construction height, a Create abutment for the pivot lever by appropriate anchoring of the profile rod, with the fixed bracket advantageously of the Irofilstab provided angled on this in a direction opposite to the pivot lever and in a corresponding opening for anchoring can be inserted. Such an opening can, for example, on a suitable part a workbench below its workpiece support surface or be provided in a special holding body which is to be attached to a corresponding base.

Br> i two possible construction forms of the invention Clamping device, the span is only limited by the loss of clamping force caused by the deformation of the profile bar, so that with appropriate dimen ^ ionization of the profile bar

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very long spans are possible. Tine hoho stability of the Clamping device is therefore guaranteed if, as before mentioned above, the profile bar in the manner of a screw slide slide is trained.

Further features and details of the orfindungsgenüissen clamping device emerge from the subsequent description of the exemplary embodiments disclosed in the attached drawing and / or from the claims for protection. In the drawing show:

Fig. 1 in a side view of a first. Embodiment a pincer-like jig;

2 shows the lower end piece of the structurally modified profile bar of the clamping device;

Fig. 3 shows a second embodiment of a zanet-like trained jig;

Fig. 4

and 5 different ways of training the am Swivel lever or tension members provided on the tensioning bracket of the profile rod;

6 shows a third embodiment in a lateral view a tong-like clamping device;

Fig. 7 is a fragmentary section along line 7-7 of Fig. G;

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Fig. 8

Up to 19 possible variants of the swivel lever and clamping bracket swiveling attachable Fra.nnglicder;

Fig. 21 is a side view of a; fourth embodiment a jig designed as a special construction;

FIG. 22 shows a construction variant of that shown in FIG Jig.

The two un in Figs. 1 ^f shown embodiments 1 to 3 of clamping devices v / iron eirv ^ n schcnkelartigcn carrier 30 to which ir> boreich its Vordorcndes is hinged oin pivot lever 32 at 34. This pivoting lever can be pivoted relative to an abutment with the aid of a gripping pliers-like Spanruuechar.isinus 36, with very large clamping forces being achieved with relatively little expenditure of force by the clamping mechanism formed by a toggle lever. The toggle lever has two one-armed levers 38, 40, of which the first is supported on an adjusting screw 44 which is used to divide the clamping force and can be locked by means of a lock nut 4 2, while the other lever is articulated at 4 6 on the pivot lever 32 and to form a Handle is extended beyond the lever knee 48 also.

The pivot lever 32 is assigned a profile rod 52 which is guided longitudinally displaceably in an eyelet 50 of the pivot lever Voruerendcs to the lever axis 40 and parallel to the pivot plane dos pivot lever, which preferably has the profile of a screw clamp slide in cross section. With

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With the aid of a wing screw 54, the profile bar can be fixed to the carrier 30 after continuous adjustment. Preferably the profile rod penetrates the swivel lever in the transverse direction. Swivel lever 32 and profile rod 52 are at one end turned. In this case, the profile bar having the bent end piece 56 can be replaced by a known, with a integrally formed clamping bracket formed screw clamp slide rail, wherein the clamping bracket 56 together with the bent in the direction of the end piece 58 of the swivel

two
hebeis / irangenbacken forms, between which a workpiece indicated by dash-dotted lines can be clamped. Instead of a clamping bracket 56 connected to the profile bar 5 2 by a round arch, the profile bar, as FIG. 2 shows, can also be bent approximately at right angles. An upset plate part 60 of the end of the profile bar is assigned a tensioning member pivotable about a transverse pivot axis 62 and having a flat contact surface 64, so that a parallel position of the clamping surfaces of the pivoting lever 32 and the tensioning bracket 56 is guaranteed in each case. To apply the clamping device, it is only necessary to adjust the profile bar 52 relative to the pivot lever 32 in the longitudinal direction until its flat contact surfaces rest on the workpiece. Thereafter, in order to mutually brace the workpieces, only the lever 40 of the toggle lever according to FIG. If the workpieces of a series of workpieces are to be clamped one after the other, there is no need to move the profile bar 52 when the clamping device is attached if, after an initial setting of the clamping device, the frilled bar is fixed on the carrier 30 with the aid of the locking screw 54.

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The embodiment according to Flg. 3 differs from previously described in the special Avis formation of the clamping bracket and through its arrangement on the profile bar. In this case it is the clamping bracket 56 is designed, for example, in the manner of a claw, so that it can also engage in workpiece recesses 66. In addition, this clamping bracket is arranged displaceably on the profile bar, it being shown in FIG. 3 lowest position is secured for example by a stop pin 68 on the profile rod. Of course he can the latter also be compressed accordingly at its lower end for this reason. The movable arrangement of the clamping bracket allows it to be exchanged for clamps with a different design. In Figures 4 and 5, the end pieces are such shown in its embodiment of the clamping bracket 56 different clamping bracket 70 or 72, the structural difference For example, it can consist in the fact that at its front end a about a pivot axis 6 2 of the pivot lever 32 parallel axis 7 4 preferably difficult to pivot Tensioning member is articulated, which, as Figure 4 shows, how the tensioning member of the pivot lever 32 can be designed to to be able to attach the clamping device to flat, inclined surfaces. In the embodiment according to FIG Tensioning member a prism 76 in order to also reliably tension pipes or other profiles having a curved surface can.

As shown in FIG. 6, a clamping device according to the invention also be designed in such a way that, to a certain extent

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Swivel lever and clamp bracket forming pliers legs optionally Have tensioners of different training attached, in order to know how to use the clamping device universally. For this purpose is at the free end of the pivot lever 32 and of the clamping bracket 56 each have a cylindrical locating bolt secured against falling out, for example by means of a saw ring 78 80 arranged to remove the tendons from the leg concerned to replace the tendons and after attaching the tendons are to be reassembled. Figure 8 shows, for example two tendons each having a flat contact surface analogous to FIG. In this context it should be mentioned that the pivotable fastening of the tendons to the tensioning device also in a different way, e.g. by means of appropriate screws or by snapping into spring-loaded bushing parts or the like can be done.

Fig. 10 shows the combination of tendons in the reverse arrangement as in Fig. 5. Fig. 12 shows tendons with planes Support plates 82, each of which has two integrally formed rightly bent and mutually trimmed holding claws 84, 86 which; for example for the Spot welding within the recess defined by the claws, for miter welding or for welding e.g. T-shaped parts etc. are suitable. 14 shows tendons with a large flat pressure plate 88, which is suitable for briefly grasping corresponding workpieces, in particular sheet metal, these plates being one of their Have front of accessible longitudinal slot 90 to between them, for example for welding corresponding To be able to introduce parts, electrodes and the like.

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The tendons according to FIG. 17 form jaws 92 one common gripping pliers, e.g. flat-nose pliers, which are suitable for reaching into small openings or workpieces on curved ones To be able to grasp surfaces and edges. 18 shows tendons combined with one prism 94, the prisms Expediently arranged so as to be difficult to rotate on the tendons and preferably with one on the circumference for rotation Knurling are provided. In the present embodiment, there is one between the tendons and the prisms arranged on the not visible pivot axis arranged leaf spring 96, the for the stiff rotatability ensures, These leaf springs can or the like in conjunction with appropriate grooves. on the contact surfaces of the actual tendons can also be used to make the prisms latchable in predetermined angular positions.

The tendons 98 shown in FIGS. 19 and 20 are designed in the manner of angular claws which make it possible, too to intervene in relatively deep openings in workpieces and, for example, to brace sleeve-shaped parts against one another with their bottoms.

As can be seen from FIGS. 8 to 20, the individual tendons are attached to the pivot lever or The clamping bracket of the clamping device is each equipped with two fastening legs 100 arranged at a distance from one another, wob ^ i the position of their bores 102 for receiving the fastening bolt 80 such a distance from the rest of the respective Tensioning member can have that either, as can be seen, for example, in FIG. 8, between the pivot lever or clamping bracket and tendon a space a or such, as in-

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for example, from FIGS. 12 and 17, it is not present. In the first case, as already mentioned, the tendons pivot relative to the legs carrying them, while in the latter case the tendons are practical are fixedly arranged on the clamping device.

In FIGS. 21 and 22 special constructions are shown Clamping devices are shown, which exert a clamping pressure on workpieces only from one side in order to place them on documents, For example, table tops and the like. To be clamped.

The structural difference of this embodiment to the previously described clamping devices according to FIGS. 1, 3 and consists in that the profile bar 52, as FIG. 22 shows, for example, can be inserted into a corresponding opening 107 of the relevant table top 103 and, for example, by means of Screws which can be screwed into corresponding threaded bores 104 can thus be fixed relative to the support surface of the table top is that when the toggle lever 36 is tensioned, the profile bar creates the necessary abutment, i.e. it moves axially Direction can no longer be adjusted, or it is - as shown in FIG to be anchored to a holding foot 106 which is fixedly arranged on the corresponding base 105. To do this, there is a possibility when the profile bar is bent at right angles at one end and this leg, designated 108, by a corresponding one Insertion of the profile rod into the eyelet 50 of the carrier 30 extends / 'a direction that of that in which the pivot lever 32 is opposite. By inserting the leg 108 into a corresponding opening of the With the retaining foot 106, an effective anchoring of the tensioning device on the base 105 can then be achieved

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The pincer-like embodiment according to FIG. 1 can also to this effect be modified that by corresponding turning of the profile rod and the carrier carrying the pivot lever when the toggle lever is actuated, the parts forming the pliers legs instead of moving towards one another move from one another move away so that the holding device can be attached to the inner circumference of pipes to accommodate them.

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Claims (1)

A 41 084 b February 10, 1975 Protection claims 1. Clamping device with adjustable span for clamping or holding objects, with a hinged to a carrier, with the help of a toggle lever relative to an abutment pivotable and lockable in its clamping position pivot lever, thereby g ·. e k e η η draws that / aem pivot lever associated abutment has the shape of a perpendicular to the lever axis and parallel has longitudinally displaceable profile rod to the pivot plane of the pivot lever. 2. Clamping device according to claim 1, characterized in that the profile rod at the front end of the leg-like Carrier and is provided in front of the pivot axis of the pivot lever. 3. Clamping device according to claim 1 or 2, characterized in that that the profile rod is guided in an eyelet of the leg-like carrier and in cross section the profile of a Having screw clamp slide rail. 4. Clamping device according to one of the preceding claims, characterized characterized in that the profile bar can be locked on the carrier. 5. Clamping device according to one of the preceding claims, characterized in that the profile bar is located in the plane of the pivot lever and opposite it Has clamping bracket. 7504062 03.07.7S A 41 084 b - 2 - February 10, 1975 6. Clamping device according to claim 4, characterized in that that at least that is free; End piece of the swivel lift extends in the direction of the clamp and preferably both free end pieces of these parts directed towards one another are. 7, clamping device according to one of the preceding claims, characterized in that at least at the free end of the pivot lever and preferably also at the free end of the profile bar or clamping bracket around one to the pivot axis of the pivot lever parallel pivot axis, preferably arranged stiffly pivotable clamping member is. 8. Clamping device according to claim 7, characterized in that the clamping members are flat and / or on their contact side are designed like a prism. 9. Clamping device according to claim 7 or 8, characterized in that that the tendons on their contact side are straight or angled at a distance from one another, flat thighs. 10. Clamping device according to claim 7, characterized in that that the tendons each carry a prism that is rotatable and preferably lockable on them. *. 1 . Clamping device according to claim 7, characterized in that that the tendons have the jaws of a conventional Form gripping pliers, in particular flat-nose pliers. 7504062 07/03/75 A 41 084 b - 3 - February 10, 1975 12. Clamping device according to claim 7, characterized in that the clamping members are angular and with their free Thighs are directed towards each other. 13. Clamping device according to one of the preceding claims 4 to 10, characterized in that the clamping bracket is arranged on the profile bar to be adjustable and preferably lockable is. 14. Clamping device according to one of the preceding claims 5 to 13, characterized in that the profile bar in the manner of a screw clamp slide rail equipped with a fixed bracket is trained. 15. Clamping device according to claim 14, characterized in that that the fixed bracket of the profile bar is angled on this in a direction opposite to the pivot lever is provided and can be inserted into an opening for anchoring the profile bar or the clamping device. 16. Clamping device according to one of the preceding claims, characterized in that to change the with With the help of the toggle lever achievable clamping pressure in the carrier, as is usual with grip pliers, an adjustment device is provided is, on whose axially adjustable adjusting member the sine lever of the toggle lever is supported. 17. Clamping device according to one of the preceding claims, characterized in that the toggle lever, as with Gripzangei usual, a release lever is assigned with. its skid to release the tension, the lever knee can be moved out of its dead center position. 7504062 03.G7.7S