DE102014117600A1 - Swivel jaws and motor-operated hand-held device - Google Patents

Abstract

With a preferably hydraulically actuated hand tool (1) connectable, for pivoting in a pivot plane about a common pivot axis (10) connected, designed as a swivel jaws punching jaws (8, 9) for punching holes and / or recesses in preferably sheet metal parts (40) , wherein as a work area (11, 12) on a first pivoting jaw (8) a punch (23) and on the second pivoting jaw (9) a punched opening (24) is formed, further on impact areas (13, 14) of the pivoting jaws (8 , 9) for performing a punching with formed as a fixed part and moving part or more moving parts action means in particular a hydraulically actuated piston / cylinder arrangement is acted on, characterized in that the action areas (13, 14) of the pivoting jaws (8, 9) for performing a punching are movable towards each other.

Description

The invention relates first to a preferably hydraulically actuated hand-held device connected for pivoting in a pivot plane about a common pivot axis, formed as a swivel jaws punching jaws for punching holes and / or recesses in preferably sheet metal parts, being used as a working area on a first pivot jaw a punch and on the second pivoting jaw, a punched opening is formed, wherein further on impact areas of the pivoting jaws for performing a punching formed as a fixed part and moving part or more moving parts acting means in particular a hydraulically actuated piston / cylinder arrangement can be acted upon.

The invention further relates to a hand-operated motor device with a handle portion and a pivoting about a first axis designed as a common pivot axis arranged, optionally designed as punching jaws pivoting jaws, further on impact areas of the pivoting jaws to carry out a pivoting trained as a fixed part and moving part action means along an action axis, wherein the action means may in particular have a hydraulically actuated piston / cylinder arrangement, can be acted upon.

The invention also relates to an arrangement comprising a first punching jaw having a first and a second end, a second punching jaw having a first and a second end, wherein the first and the second punching jaw are pivotally connected to each other, for pivoting in a pivoting plane about a common pivot axis ,

Such swivel jaws, also in training as punching jaws and beyond arranged on a motor-operated hand tool swivel jaws are already out of the WO 2013/017535 A2 known. In addition, it is known, cf. DE 20 2010 008 228 U1 to form on a motor-operated handset a pivotally arranged to the handset tension piston. Last but not least, it is known, cf. WO 2012/080293 A2 ( AU 2011343379 A1 ), on a motor-operated hand tool by means of a tension piston holes punched out of a sheet metal part.

Based on the stated prior art, the invention is concerned with the task of specifying designed as swivel jaws punching jaws, which are to operate low. In addition, the invention has the object of specifying a hand-operated motor device with pivoting jaws arranged thereon, which can achieve as versatile as possible applicability. Furthermore, the invention has the object to provide an advantageous arrangement regarding punching jaws.

A possible solution of the problem is given according to a first inventive idea in a punching jaw pair, in which the action areas of the punching jaws for performing a punching are movable towards each other. Due to the fact that, in the case of a swivel jaw pair embodied as a pair of punching jaws, the action areas for carrying out a punching are movable towards one another, a very space-saving arrangement with respect to a swiveling jaw actuating device can be achieved. The action means need not in the same way on both sides of the pivoting jaws to attack in a pivoting plane of the pivoting jaws on the pivoting jaws.

Accordingly, a substantially one-sided attachment of the action means and the related device is made possible with respect to the pivot axis of the pivoting jaws, wherein the action means and possibly the actuating device can be arranged to extend in the pivoting direction of the pivoting jaws.

The action means and optionally also the device which actuates these may be arranged to extend at a right angle to an extension direction of the pivoting jaws.

A further possible solution of the problem is given with respect to the motor-operated hand-held device according to a further inventive concept in that the pivoting jaws are rotatable relative to the handle portion of the handset to be regarded as fixed together about a further axis different from the action axis and the pivot axis. Thus, with regard to swivel jaws and in particular punching jaws, a high variability of the arrangement with regard to the grip area of the hand-held device is achieved. Even in difficult to reach areas can still be carried out a required implementation of a procedure with the swivel jaws, possibly also the execution of punching jaws.

The swivel jaws can in principle be connected to any suitable hand-held device. The hand-held device preferably has a tensile part, for example corresponding to a pulling piston in a hydraulic device. In this case, the tensile part can also be actuated by an electric motor alone. Next, the handset preferably has a part, which serves as an abutment in the mentioned and described here sense.

A further possible solution of the problem with respect to the stated arrangement is given in an arrangement in which a punch is provided which is provided at the first end of one of the punching jaws and a punching opening which is provided at the first end of the other of the punching jaws further comprising a handset connected to the punching jaws near the second ends thereof, wherein when the handset is operated, the first ends of the punching jaws move toward each other to effect a punching.

According to a preferred embodiment, the pivoting jaws, in particular in their special training as punching jaws, extending crossing each other, provided. This refers to the swivel jaws in their longitudinal extent, wherein they have work areas on one side and on the other side, be it in front of or behind the crossover area, seen from the work areas, action areas for the action means.

In particular, it is also preferred that the pivoting jaws for interaction with an action means have mutually aligned openings whose orientation corresponds to the extent of the pivoting plane. Thus, a means of action can engage in a pivoting jaw and enforce it if necessary. The alignment in the pivoting plane allows said alignment of the action means and optionally in particular the relevant handset substantially in a rectangular extension to a longitudinal extension of the pivoting jaws as such.

It is also preferred that the action of the action means on the pivoting jaws - based on the already mentioned longitudinal extent of the pivoting jaws - between the working areas and the pivot axis. Although this action is superficially in terms of strength less favorable, as no or less leverage can be exploited. On the other hand, however, it enables a comparatively short design of the swivel jaws with regard to the longitudinal extent of the swivel jaws. This can have a favorable effect in view of the on-site processing of installed objects, which are often difficult to access, especially when carrying out, for example, punching operations.

The action means may in particular comprise a pull rod passing through both swivel jaws. The pull rod can be further designed as a piston rod of the already mentioned hydraulically actuated piston / cylinder arrangement or, for example, as a piston rod of a pneumatically actuated piston / cylinder arrangement. Here, the pull rod or piston rod is in terms of a first pivoting jaw in the sense that it protrudes on one side to the other pivoting jaw out and on the other hand to the handset. With respect to the second pivoting jaw, the pull rod or piston rod can only enforce this for attachment or at least be firmly connected to it without complete enforcement.

The pull rod can also be designed as a bolt. In particular, in this case, the pull rod, in the sense of a tensile forces receiving bolt, also form the solid part. The bolt can also be moved relative to a nut. In such a case can be acted upon by a punching with two moving parts on the punching jaws.

The fixed part of the action means, which is preferably a part of the hand-held device, cooperates with one of the swivel jaws for performing a work process preferably as a counter-holder. In the preferred pulling together of the swivel jaws or of swivel jaw sections by the hand-held device, the movement part formed, for example, as a hydraulic piston and adjoining piston rod moves relative to the fixed part firmly resting on one of the swivel jaws as an anvil.

The swivel jaws can be biased as such by means of a return spring in its initial position, ie the open position before a work operation. The return spring may in this case, as far as the action means are preferably permanently connected to the pivoting jaws, be arranged generally surrounding the piston rod or the tension member. Alternatively, the return spring can also be arranged, for example, in a joint or crossover region of the swivel jaws, which act on the swivel jaws relative to one another relative to the swivel axis.

Trained as a counterpart fixed part can act in more detail on a Kalottenabschnitt on an adapted concave action section of the associated pivoting jaw to achieve a joint-like mobility. According to the action regions of the swivel jaws moving in principle on circular arcs, a certain mobility of the action means relative to the swivel jaws is advantageous if the action means, as preferred here, essentially consist of a piston rod and an anvil. The mobility can be conveniently achieved by said Kalotten- / Konkavausbildung. It can also be provided vice versa that the Kalottenabschnitt is formed on a pivoting jaw and the concave formed action portion on the fixed part.

Incidentally, it is also preferred that the pivoting jaws are designed differently, wherein one of the pivoting jaws, in the case of punching jaws, preferably the punching jaw having pivoting jaw, extends angularly in a side view.

In the following, the invention will be explained further with reference to the attached drawing, which, however, represents only exemplary embodiments. Hereby shows:

1 an overall perspective view of a handset connected to formed in the form of punching jaws pivoting jaws;

2 according to the swivel jaws 1 in an exploded view;

3 a cross section through the upper portion of 1 cut in the plane III-III;

4 a further illustration of a corresponding handset according to 1 in an alternative embodiment;

5 a cross section through the article according to 4 cut in the plane VV;

6 a representation according to 5 , after in working position successful pivoting of the swivel jaws;

7 a further representation according to 5 respectively 6 after shutting down the punch;

8th another illustration in the sequence of 6 and 7 after punching out;

9 a view from above in the direction of a longitudinal axis of the action means, to illustrate the Verschwenkmöglichkeiten about a longitudinal axis of the handset;

10 a single representation of the swivel jaws in the embodiment of 1 ;

11 a single representation of the swivel jaws in the embodiment of 4 ;

12 a perspective view of another embodiment; and

13 a cross section through the embodiment according to 12 , cut in the longitudinal direction of the swivel jaws.

Shown and described, first with reference to the 1 to 3 , a handheld device 1 , which is to be operated by electric motor. The electric motor itself is not shown in detail. He is in the hull device 2 to be designated part of the handset 1 ,

The trunk device 2 here includes the typical for such a hydraulic tool hand-held units (see also WO 03/084719 A2 respectively US 2007/0180887 A1 ). It is in addition to the said electric motor preferably an accumulator 3 , a tank (not shown) for hydraulic fluid, a (first) hydraulic piston / cylinder assembly and a return valve for controlling this first hydraulic piston / cylinder assembly.

Next, the handset has a tension piston 4 up in a pickup cylinder 5 is arranged. The receiving cylinder 5 is relative to one of the first piston / cylinder assembly of the trunk device 2 subsequent hydraulic line 6 , which is preferably a hydraulic pressure line, via a hinge 7 arranged pivotally.

The named hydraulic line 6 has a first longitudinal axis L ₁ , while the tension piston 4 or the receiving cylinder 5 have a second longitudinal axis L ₂ . The first longitudinal axis L ₁ and the second longitudinal axis L ₂ extend, as also shown in the exemplary embodiment, preferably parallel to each other. The second longitudinal axis L ₂ is in the embodiment and preferably in one of the action means, here the piston rod 15 , and the impact area 13 respectively 14 passing axis, which can also be referred to as the action axis L ₂ continues. Also around this axis, the swivel jaws can be pivoted together.

Another pivot axis L ₃ in turn preferably extends at an angle, namely more preferably at right angles (for example, relative to a plane in which both the axis L ₁ and / or L ₂ as well as the axis L ₃ extend) to the first longitudinal axis L ₁ and / or the second longitudinal axis L ₂ .

In the embodiment of the 1 to 3 are formed as punching jaws Verschwenkbacken 8th . 9 around a pivot axis 10 pivotally connected to each other. They thus pivot in one to the pivot axis 10 right-angled pivoting plane. The for both punching jaws 8th . 9 common pivot axis 10 is in the embodiment of 1 to 3 , seen from workspaces 11 . 12 the punching jaw, after the pivot axis 10 arranged.

As can be seen in particular from the 2 and 3 results are on both punching jaws 8th . 9 action areas 13 . 14 educated. The impact areas 13 . 14 each of a piston rod 15 that in the extension of the tension piston 4 is arranged, interspersed.

In more detail is the in his punching jaw 8th , its area of influence 14 , As a fixed part associated receiving cylinder as a counter-holder adjacent to the impact area 14 ,

That the pulling piston 4 opposite end of the piston rod 15 is equally pressure-transmitting at the impact area 13 the swinging jaw 9 at.

In the concrete embodiment, an overlapping means is provided for this purpose, with the relevant end of the piston rod 15 interacts. Specifically, it is a clip-like holding part 16 , by means of meshing teeth 17 in engagement recesses 18 this end of the piston rod 15 intervenes.

Basically, a Aufschraubmutter at this point, which could be countered for example by a second nut.

However, it is preferred, as in the embodiment, that the engagement recesses 18 and engaging teeth 17 circular, without threading into each other, circulate.

It is further preferred that the holding part 16 two clamp jaws 19 which is around a staple axis 20 are rotatable against each other. By a spring 21 they are biased in the illustrated holding or Verspannstellung.

The installation of the piston rod 15 at the impact area 13 the swinging jaw 9 is preferably given solely by the overlapping means.

The support by the fixed part or specifically the receiving cylinder 5 in the area of influence 14 as well as the support by means of the overlapping means, such as the holding part 16 , at the impact area 13 the swivel jaws 8th respectively 9 is each given on the outside of the Verschwenkbacken.

The swivel jaws 8th . 9 are not only visible around the common pivot axis 10 relative to each other, but according to the pivot axis L ₃ as adjacent to the pivot axis 10 and the second longitudinal axis or axis of action further axis L ₃ rotatable relative to a so far as to be considered fixed handle area 22 that is specific to the hull device 2 is formed, the handset 1 ,

As can be seen in more detail from the exploded view of 2 indicates the work areas 11 . 12 the swivel jaws 8th . 9 on the one hand a punch 23 and on the other hand, a punch opening 24 on.

The punch 23 is from a wiper part 25 , which is formed in the embodiment and preferably sleeve-like surrounded. The wiper part 25 is about fasteners 26 and in the wiper part 25 trained long holes 27 movable to the punch 23 arranged. It is by means of a biasing spring 28 in a position the punch radially overlapping position, see also about 5 , pretensioned.

The punch 23 is further preferred with respect to its free end by a separate punching sleeve 29 formed, which further with a fastening means, not shown, on the punch 23 can be appropriate. As a result, an exchange can be made in the simplest way.

In the embodiment of the 4 to 8th the action means act on the swivel jaws 8th . 9 , based on a longitudinal extent of the swivel jaws 8th . 9 , between workspaces 11 . 12 and the pivot axis 10 on this one.

Said longitudinal extent of the swivel jaws is the extent of the swivel jaws in the direction of the work areas 11 . 12 to the pivot axis 10 and optionally, see first embodiment, moreover.

Also in this case, the action means with the swivel jaws 8th . 9 using trained, aligned openings 30 . 31 together. The action means are also formed substantially the same as those already in the first embodiment of the 1 to 3 described acting agents.

The openings are visible 30 . 31 in the second embodiment also preferably provided with a slightly larger diameter, so as to a relative movement of the action means, in particular the piston rod 15 relative to the openings 30 . 31 to allow or facilitate to a somewhat greater extent.

The solid part of the means of action, the receiving cylinder 5 , Acts in this embodiment, but in principle also in the first described embodiment is possible by means of a Kalottenabschnitt 32 having Kalottenteils 33 on the associated swivel jaw, here the swivel jaw 9 , The relevant area of action of the swivel jaw 9 is concave. It could also be a separate part, which (only) has the concave design.

The swivel jaws 8th . 9 What is basically possible with respect to the first embodiment are further by means of a return spring 34 biased into their open position. While the return spring 34 in the embodiment and preferred is a compression spring, it would be so far in the first embodiment acting on the swing jaws tension spring. The return spring 34 surrounds further in the embodiment and preferably the piston rod 15 , In the mutually facing areas of the swivel jaws 8th . 9 are shoulders 35 . 36 formed, on which the return spring 34 each supported.

To carry out a punching process, as described in detail in the sequence of 5 to 8th is shown is by means of a manual switch 37 in the trunk device 2 triggered a start of the electric motor, which is pumped by means of a hydraulic pump hydraulic fluid into a first hydraulic cylinder and a first hydraulic piston is moved, via the hydraulic line 6 Hydraulic fluid in the receiving cylinder 5 under pressure. Since the hydraulic means, see the above figures, the upper side, in the embodiments schwenkbackenseitig, the tension piston 4 in the receiving cylinder 5 is initiated, moves the Zugkolben 4 in the illustrated basic position of the device (which, according to a pivotability about the pivot axis L ₃ but also does not necessarily have to be given) in the direction of the trunk device 2 , The movement takes place here against a return spring 38 , By this movement of the tension piston 4 becomes the piston rod 15 in the receiving cylinder 5 (further) pulled in and thus the swivel jaws 8th . 9 to perform a work on the working area side to each other moves. In the case of the illustrated swivel jaws 8th . 9 The movement is so far possible that it is a punched out of a punching 39 from a sheet metal part shown here, for example, tubular 40 comes.

As this at the same time as the already mentioned bias spring 28 is compressed, it comes with a subsequent relief of the tension piston 4 , which can be achieved by a return of hydraulic fluid in a hydraulic fluid reservoir, to a provision of the scraper 25 relative to the punch 23 , which makes about one more with the punch 23 clamped connected sheet metal part 40 is stripped off.

In reference to 9 it can be seen that the swivel jaws 8th . 9 on the one hand in the illustrated plan view about the second longitudinal axis L _{2 are} pivotable, but also about the first longitudinal axis L ₁ and further, see the illustrations of 1 . 3 and 5 to 8th to the pivot axis L ₃ .

Since the pivoting about the first or second longitudinal axis L ₁ , L _2, a pivoting about a longitudinal axis of the hydraulic cylinder in the hull device 2 or the receiving cylinder 5 allows the pivoting about the pivot axis L ₃ allows pivoting of the pivoting jaws 8th . 9 together with the receiving cylinder 5 and the Zugkolben therein 4 on a circular path whose center is formed by said pivot axis L ₃ .

In the 10 and 11 are the pairs of swivel jaws, here in an education as punching jaws, each in individual representation, without the associated handset reproduced. These pairs of swivel jaws are also subject matter of the application and can in principle be connected to any suitable hand-held device.

For the description in detail, reference is made to the above description.

Related to the 12 and 13 is shown yet another embodiment. This is an arrangement of swivel jaws, which can be actuated solely by manual force, for carrying out a punching process.

In this embodiment, a threaded bolt passes through instead of a piston rod 41 the swivel jaw 9 or the swivel jaw 10 , This is comparable to the piston rod 15 about in the embodiment of the 8th the swivel jaws interspersed.

The bolt, which in any case over a part of its length with a thread 42 is formed, in this case can represent the hard part. At one end of the threaded bolt 41 is a mother 43 screwed. Initially, this nut could be manually operated, for example as a wing nut. It is preferred that they by means of a wrench 44 is operable. By a corresponding operation, it moves as a moving part in the axial direction of the threaded bolt 41 on this. This allows the in 13 upper swivel jaw 8th on the lower swinging jaw 9 to be moved, which, which is not shown here in detail, working area side of the swing jaws an identical punched as in 8th shown, can reach.

The threaded bolt 41 also acts in this embodiment preferably on a dome part 45 with the lower swivel jaw 9 together. Next, in principle, the threaded bolt 41 , by approximately positively in a space 47 at least in this area preferred bifurcated lower pivot jaw 9 fits in, rotates hindered. But it can also prevent rotation by applying a counter-wrench 46 on the one with the mother 43 opposite end of the threaded bolt 41 be provided, as shown in the embodiment.

It can also be the mother 43 through the wrench 44 be held and a twist of the threaded bolt 41 by means of the wrench 46 respectively. In this context, then the threaded bolt 41 the moving part and the screw 43 the hard part.

It can also be both parts, the mother 43 and the threaded bolt 41 , at the same time be twisted against each other. In this case, only moving parts are realized. This in any case, if no separate and also still fixed dome part 45 is provided.

The lower wrench 46 can continue an engaging sleeve 48 have, with which form-fitting an end 49 of the threaded bolt 41 through the wrench 46 can be taken.

The above explanations serve to explain the inventions as a whole covered by the application, which independently further develop the state of the art, at least by the following combinations of features, namely:
A hand-held device that is characterized in that the action areas 13 . 14 the swivel jaws 8th . 9 for performing a punching are movable towards each other.

A handset, which is characterized in that the swivel jaws 8th . 9 relative to the grip area to be regarded as fixed 22 are jointly rotatable about a further, different from the action axis L ₂ axis L ₃ .

A hand tool or swivel jaws, which are characterized in that the swivel jaws 8th . 9 extend crossing each other.

A hand tool or swivel jaws, which are characterized in that the swivel jaws 8th . 9 for interaction with an action means aligned openings 30 . 31 have, whose orientation corresponds to the Verschwenkungsebene.

A hand tool or swivel jaws, which are characterized in that the action of the action means on the swivel jaws 8th . 9 - Based on a longitudinal extent of the swivel jaws 8th . 9 - between workspaces 11 . 12 and the pivot axis 10 he follows.

A hand tool or swivel jaws, which are characterized in that the action means a two swivel jaws 8th . 9 penetrating piston rod 15 exhibit.

A hand tool or swivel jaws, which are characterized in that the swivel jaws 8th . 9 by means of a return spring 34 are biased to their original position.

A hand tool or swivel jaws, which are characterized in that the return spring 38 surrounding to the piston rod 15 is arranged.

A hand tool or swivel jaws, which are characterized in that the fixed part of the action means in an action on the swivel jaws 8th . 9 for carrying out a work process with one of the swivel jaws 8th . 9 interacts as a counterpart.

A hand tool or swivel jaws, which are characterized in that the fixed part formed as a counterpart on a Kalottenabschnitt 32 on an adapted concave action section of the associated pivoting jaw 8th . 9 acts to achieve a joint-like mobility.

LIST OF REFERENCE NUMBERS

1

 handset

2

 body device

3

 accumulator

4

 traction piston

5

 receiving cylinder

6

 hydraulic line

7

 swivel

8th

 swing jaw

9

 swing jaw

10

 swivel axis

11

 Workspace

12

 Workspace

13

 impact area

14

 impact area

15

 piston rod

16

 Cross resources

17

 engaging tooth

18

 engaging recess

19

 clamp jaw

20

 clamp axis

21

 feather

22

 grip area

23

 punch

24

 punching opening

25

 scraper member

26

 fastener

27

 Long hole

28

 biasing spring

29

 punch bushing

30

 opening

31

 opening

32

 calotte

33

 calotte

34

 Return spring

35

 shoulder

36

 shoulder

37

handset

38

 Return spring

39

 dIECUT

40

 sheet metal part

41

 threaded bolt

42

 thread

43

 mother

44

 wrench

45

 calotte

46

 Counter-wrench

47

 gap

48

 engaging sleeve

49

 The End

L ₁

 first longitudinal axis

L ₂

 second longitudinal axis

L ₃

 pivot

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2013/017535 A2 [0004]
• DE 202010008228 U1 [0004]
• WO 2012/080293 A2 [0004]
• AU 2011343379 A1 [0004]
• WO 03/084719 A2 [0036]
• US 2007/0180887 A1 [0036]

Claims (10)

With a preferably hydraulically operated hand-held device ( 1 ) connectable, for pivoting in a pivot plane about a common pivot axis ( 10 ), formed as a swivel jaws punching jaws ( 8th . 9 ), for punching holes and / or recesses in preferably sheet metal parts ( 40 ), whereby as a working area ( 11 . 12 ) on a first pivoting jaw ( 8th ) a punch ( 23 ) and on the second pivoting jaw ( 9 ) a punch opening ( 24 ), wherein further on exposure areas ( 13 . 14 ) of the swivel jaws ( 8th . 9 ) for performing a punching with acting as a fixed part and moving part or more moving parts action means in particular a hydraulically actuated piston / cylinder arrangement is acted upon, characterized in that the action areas ( 13 . 14 ) of the swivel jaws ( 8th . 9 ) are movable towards each other for performing a punching. Motor-operated hand-held device ( 1 ) with a grip area ( 22 ) and to a pivoting about a first axis formed as a common pivot axis ( 10 ), optionally formed as a punching jaws pivoting jaws ( 8th . 9 ), further focusing on exposure areas ( 13 . 14 ) of the swivel jaws ( 8th . 9 ) for carrying out a pivoting with as solid part and moving part or as a plurality of moving parts formed action along an axis of action (L ₂ ), wherein the action means may be given in particular by a hydraulically actuated piston / cylinder arrangement, can be acted upon, preferably with one or more further Features of claim 1, characterized in that the pivoting jaws ( 8th . 9 ) relative to the grip area to be regarded as fixed ( 22 ) are rotatable together about a further, of the action axis (L ₂ ) different axis (L ₃ ). Swivel jaws or hand tool according to claim 1 or claim 2, characterized in that the swivel jaws ( 8th . 9 ) extend crossing one another and / or that the pivoting jaws ( 8th . 9 ) for interaction with an action means aligned openings ( 30 . 31 ) whose orientation corresponds to the Verschwenkungsebene. Swivel jaws or hand tool according to one of the preceding claims, characterized in that the action of the action means on the swivel jaws ( 8th . 9 ) - related to a longitudinal extent of the swivel jaws ( 8th . 9 ) - between the work areas ( 11 . 12 ) and the pivot axis ( 10 ) he follows. Swivel jaws or hand tool according to one of the preceding claims, characterized in that the action means a two swivel jaws ( 8th . 9 ) passing through the piston rod ( 15 ) exhibit. Swivel jaws or hand tool according to one of the preceding claims, characterized in that the swivel jaws ( 8th . 9 ) by means of a return spring ( 34 ) are biased to their initial position. Swivel jaws or hand tool according to claim 6, characterized in that the return spring ( 38 ) surrounding to the piston rod ( 15 ) is arranged. Swivel jaws or hand tool according to one of the preceding claims, characterized in that the fixed part of the action means when acting on the swivel jaws ( 8th . 9 ) for carrying out a work process with one of the swivel jaws ( 8th . 9 ) cooperates as an anvil and / or that formed as a counterpart solid part over a Kalottenabschnitt ( 32 ) on an adapted concave action section of the associated pivoting jaw ( 8th . 9 ) to achieve a joint-like mobility. Swivel jaws or hand tool according to one of the preceding claims, characterized in that a screw bolt and a cooperating with the bolt nut as a fixed part and moving part or as moving parts which cooperate, are formed. Arrangement comprising: A first punching jaw having a first and a second end, a second punching jaw having a first and a second end, the first and second punching jaws being pivotally connected to each other for pivoting in a pivoting plane about a common pivot axis; a punch provided at the first end of one of the punching jaws and a punching hole provided at the first end of the other of the punching jaws; and a handset connected to the punching jaws near the second ends thereof, wherein when the handset is operated, the first ends of the punching jaws move toward each other to effect a punching.

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