CN101848805A - Wedge drive with slide receiving device - Google Patents

Abstract

In the case of a wedge drive (1) having a slide receptacle (2), a movable slide (3) and a drive (5), wherein a sliding surface (301, 302) is arranged between the slide (3) and the drive (5) and a dovetail-shaped or prismatic guide device (6) is arranged between the slide (3) and the slide receptacle (2).

Description

Wedge drive with slide receiver

technical field

The invention relates to a wedge driver or key comprising a slide receiver, a movable slide and a drive, wherein a slide surface is arranged between the slide and the drive.

Background technique

Wedge drives, also known as slides, are mainly used to transfer the pressing force to punching or forming tools so that cutting, perforating or forming can be carried out in specific areas of body parts with inclined or undercut structures. In this arrangement, the wedge drive comprises at least one slide receiver, a movable slide and a drive. A slide receiver, eg rigid, is usually attached to a part of a pressing or pressing tool in which a wedge driver is used to perform a punching or forming operation. The wedge drive is referred to as an upper slide if its slide receiver is fixed in the upper part of the pressing tool, which is connected to the moving pressing ram. If its slide receiver is attached to a lower extrusion tool fixed on a rigid extrusion table, it is called a lower slide. Regardless of the part of the wedge drive to which the slide receiver is attached, it usually has a linear guide in which the movable slide can reciprocate, but again it is firmly attached to the on the slider receiver. The driver is usually in the form of a rigid member which is firmly connected to the part of the extrusion tool to which the slide receiver is not fixed. The drive usually has an inclined wedge section and thus serves as a drive for the movable slide.

In the case of a substantially vertical forward movement involving the extrusion tool (this is called the working stroke), the slide in its rear position rests against the rigid upright drive and is supported so that it is It is positioned obliquely (wedge-shaped) to advance the front. In this case, the inclination of the linear guide of the slide receiver is adapted to the inclined positioning of the drive, so that the movable slide involved is not accelerated relative to the actual extrusion speed. Thus, only the movable slide is driven by means of the pressing tool and is pushed forward or outward in a controlled manner so that punching or forming work can be carried out. During the backward stroke movement in which the pressing tool moves beyond its bottom dead center position and the two parts move away from each other again, the movable slide is usually pushed back to its original position by means of a suitably designed elastic on, so the process can start over. The return force required for the return movement of the slider is typically 2% to 10% of the actual working force and the weight of the slider. In this respect, the determining aspects of the magnitude of the pressing force are the dimensions of the surfaces used to transmit this pressure, the respective inclinations of the linear guides in the slide receiver and the oblique positioning of the drive and the fit and fit of these surfaces and inclinations. The structure of the sliding part itself, these surfaces are called sliding surfaces. The pressure to be delivered is typically a few 100KN to many 10,000KN.

The linear guide in the slide receiver serves to guide the movable slide with as little play as possible and in doing so absorbs high pressing forces and provides a long service life. In order for workpieces to be cut or perforated without burrs, a tolerance of the movement accuracy of the movable slide of a maximum of 0.02 mm is therefore required. If this tolerance is not met, workpieces that are cut, perforated, or shaped in some other way can no longer be placed one on top of the other in precisely aligned relationship, thus creating errors in the basic body structure and/or workpieces Rubbing against each other means faster erosion, less strength in the constructed body and possibly increased noise levels due to loosening of the sheet metal parts. In order to avoid all these disadvantages, it is required, especially in the automotive industry, that the wedge drives have extremely high movement precision and permanently withstand the required pressing pressure or make them useful in relation to stamping or forming tools.

In order to provide the required motion precision, various concepts have therefore been developed, some of which are presented below. As an example, slide guides with side slide plates and drives arranged at right angles as well as screw caps for holding the slide are known. Slider guides of that kind can certainly withstand very high crushing and lateral thrusts, but they are very complex and expensive to manufacture due to the high degree of manual coordination complexity and expense required to match the guide gaps located between these elements . Other problems that have been found are insufficient prevention of the slide guides from falling apart, in which case the sum of the slide weight plus the rearward coupling force acts on the set screws of the fascia and can dislodge them very quickly. overload. Furthermore, such a slide guide has relatively large structural dimensions and is therefore not suitable for the construction of small slides.

Slide guides are also known with transverse angle irons and drive plates arranged at right angles. In contrast to the above-described slide guides, the combination of the transverse slide plate and the cover plate leads to a reduction in the size of the required installation space, so that in particular smaller slider dimensions are also possible as a result. It will be noted, however, that relatively high forces act on the fixing screws of the angle iron and that, as a result, there is a relatively high risk of accidents. Furthermore, the complexity and complexity of adjusting the mating element to this guide gap is high, so additional costs are also incurred here.

Other types of slide guides used include lateral slides and cover plates which are inclined at an angle of 45°. They are therefore arranged approximately in a roof-shaped structure. This makes it possible to reduce the structural width, since the cover bar and the sliding plate are arranged one above the other instead of one next to the other. Note, however, that the required construction space is still very large, so that it is almost impossible to form smaller slides. Furthermore, the generated traction forces have a detrimental effect on the fixing screws of the fascia and lead to a high degree of handling uncertainty.

Other known structures include a slider guide with a drive plate and one or two post guides with bushings to hold the slider laterally and prevent it from falling out. The use of the guide column with the drive plate means that, of course, only a still relatively small installation space is required, and a considerably less expensive production is possible in the prior art with the above-mentioned solution. It will be noted, however, that the column guide cannot compensate for higher lateral pressures due to the type of structure involved. Also, it can't carry any particularly heavy slides, so those slides create less crushing force and are more susceptible to troubles in the crushing process.

For example EP 1 035 965 61 discloses another slide guide arrangement. This arrangement provides a clamping enclosing relationship with respect to the slider guide, wherein the driver provides the prismatic guide and the slider plate is inserted between the driver and the slider. The included roof shape means that very high slide forces are possible with at the same time a small construction space and likewise a very precise guide play, so that the wedge drive or slide guide is stable , and has a long working life. However, it will be noted that the manufacture of the clamping guide is actually complicated and costly as a result by requiring expensive cutting mechanical work to obtain the precise mounting shape.

For example EP 1259371B1, DE 198 60 178 C1 and EP 1 197 319 B1 also disclose other wedge drives.

All the above-mentioned design principles of the slide guides of the wedge drive have one or more slide plates to transmit the generally large pressing force, and likewise a suitably designed retainer for holding the slide in the above-mentioned position. in the set guides. The slide plate serves to permanently transmit the working pressure exerted by the pressing tool from the slide receiver and the drive part to the movable slide and thus ensures the actual forward drive effect. The holders are used to linearly hold the slide on the slide plate of the slide receiver, in which case they permanently ensure the required precision of movement and are intended to possibly compensate for lateral thrusts which generate During forming operations or during cutting or punching.

Contents of the invention

Now, the object of the present invention is to further develop a wedge drive as proposed in the classification part of claim 1 in such a way that a guide for a movable slide is provided which differs from the state of the art. Compared with other solutions, this guide allows better movement precision, it can optimally convert the pressing force, which acts on the punching or forming movement, which compensates better than the prior art Lateral thrust is increased and the wedge drive is provided with a longer service life than is possible with prior art solutions. The present invention also seeks to provide the required reduction in complexity and expense while making coordinated wedge drives and more economical manufacture possible.

For a wedge drive as set forth in the classification part of claim 1, this object is achieved in that a dovetail-like or prismatic guide is arranged between the slide and the slide receiver. With such a slide of a wedge drive, the object of the invention is achieved in that the slide has dovetail-shaped or prismatic sides. Further developments of the invention are defined in the dependent claims.

There is thus provided a wedge drive or pin in which the movable slide has a dovetail or prismatic side, wherein the slide receiver is in the form of a corresponding counterpart and thus has a dovetail Or the slides of the sides of the prism can engage into the slide receptacle and can be guided and held therein. The surfaces on the slide and/or the slide receiver provided by the dovetail shape and the prism shape respectively bear against each other, in which case the surfaces in the dovetail or prism shape can bear the load pointing without any problem. Forces in different directions while the surfaces are at an angle relative to each other. The dovetail shape means that, after being inserted into a correspondingly shaped receiving structure of the slide receptacle, the movable slide is prevented from falling out or moving laterally without further measures.

Advantageously, the sliding surface is provided on the slide and/or on the slide receiver. In a particularly preferred feature, the dovetail or prismatic guide comprises at least two sliding plates arranged at an angle relative to each other. Advantageously, the cross-section of the sliding plate of the dovetail-like or prismatic guide can be an L-shaped cross-section. It was further found to be advantageous if sliding plates are arranged on all surfaces of the slider and of the slider receiving means, which surfaces slide against each other, so that in each case at least two parts arranged at an angle relative to each other A slide plate is provided on the slide and the slide receiver. Sliding plates that are roof-shaped or L-shaped in cross-section can advantageously be arranged such that their inner narrow sides provide an undercut in the form of the dovetail guides described above due to the outwardly slanted positioning of the sliding plates.

Due to the simultaneous provision of sliding plates on both sides of the slider and the slider receiver respectively, wherein they are arranged symmetrically and in an L-shape or in a roof-shape, the shape of the dovetail guide can be obtained so that no other A cost-intensive linear holder is particularly advantageous and possible. Furthermore, the production costs can be significantly reduced compared to prior art solutions, since fewer components are provided than in the prior art without in any way adversely affecting the mode of operation of the wedge drive , but allows a more reliable and safer work without providing a holder, with a very high degree of movement accuracy.

Advantageously, the dovetail or prismatic guide comprises a positively locking connection between the slider and the slider receiver. The provision of such an active locking connection provides a compact unit by means of which even high pressing forces can be transmitted without any problems. Furthermore, due to the effective locking relationship in the area of the dovetail or prismatic guide and in the mechanical contact between the two parts of the slider to be engaged and the slider receiver, the force to be transmitted is virtually It prevents the slide and the slide-receiving means from sliding out of each other undesirably by means of surfaces in contact with each other, which surfaces are at an angle relative to each other, and in this respect, by virtue of their angular positioning helps to hold the parts together.

It has furthermore proven to be advantageous if the slider receptacle has a protruding structure in the region of the sliding surface of the slide plate and/or of the receptacle of the slide plate. This provides a larger surface for the slide to slide relative to the slide receiver, so that the pressing force can be transmitted very well by means of these enlarged receiving surfaces.

Advantageously, the slide plate can be fastened releasably to the slide receptacle and/or the slide, in particular by means of fixing screws to the slide receptacle and/or the slide. The release of the slide plate from the slide receiver and the slide, respectively, means that they can be replaced when wear occurs. It should be appreciated that it is also possible in principle to configure the slider receiving means and the corresponding sliding surfaces of the slider in such a way that they can slide against each other without an interposed sliding plate. However, this proves to be inexpensive and simple in terms of handling, in the event of wear, the slide receiver and the slides themselves needing to be replaced, and if the arrangement has releasable slide plates, then its replacement Can be fast and without any difficulty.

It is advantageous if the sides of the slide with dovetail or prismatic shape have support surfaces as sliding surfaces, in particular for the connection of slide plates. It has proven to be particularly advantageous to provide two slide plates in each case, which are arranged at an angle relative to each other, since here it is possible to avoid laborious adjustment of four separate slide plates, which The sliding plates are arranged at an angle relative to each other. Only adjustments need to be made on the respective support surface for each sliding plate, so that the sliding plate can be changed quickly.

Advantageously, the wedge guide is arranged between the slide and the drive. This arrangement makes it possible to accommodate very high forces while having a relatively small installation space and at the same time to provide a precise and stable guidance of the sliding part on the drive part during the movement.

Advantageously, the wedge guide comprises two sliding plates arranged at an angle relative to each other. Advantageously, these sliding plates comprise a material that facilitates sliding, especially bronze with a solid lubricant. The arrangement of the sliding plate, which is especially exchangeably fixed to the drive and/or the slide, is provided in a simple manner that the plate can be replaced in the event of wear, while providing the drive during operation. and optimal sliding of the slide surfaces that engage each other.

It has also proven to be advantageous if the dovetail or prismatic guide and the wedge guide are arranged on the slide at an angle relative to each other. Such an arrangement at multiple angles relative to each other means that, in particular, the structural dimensions of the wedge drive can be reduced, thus providing a compact unit which can be used even in confined space conditions within the pressing tool.

It has also been found to be advantageous if the dovetail-like or prismatic guide and the wedge guide are provided at two mutually adjacent sides of the slide. This makes it possible to increase the precision of movement, but at the same time, mainly, to reduce the size of the structure compared with the technical solutions of the prior art, which usually consist of operative joints and joints on the drive. An operable engagement on the slider receiver at two sides of the slider which are arranged opposite to each other.

The slide may have a third side adjacent the other two sides, the third side having receiving means for receiving a working tool. In this case, it is advantageous if the third side has at least two undercuts and/or grooves for inserting protrusions of a receiving device for receiving a processing tool. This separate receiving device which is provided for receiving a processing tool such as a piercing punch makes it possible to simply replace the tool without any difficulty, because only the receiving device needs to be removed from the third side of the slide and used For example another receiving device loaded with a different tool is exchanged. Additional holes can be drilled in the slide, which completely eliminates the annoying process of screwing on and off the machining tool itself. The provision of undercuts and/or grooves at the third side of the slide means that the receiving device can be inserted there, for example, pushed into place, in which case no further fixing is even required, because An optimal transmission of forces is already guaranteed, especially with the undercut construction, since an effective locking connection is provided.

The third side of the slide can also be provided with at least one wedge surface, in which case the receiving means then preferably has a corresponding wedge surface in order to provide an effective locking connection between the slide and the receiving means of the processing tool. Lateral thrusts can thus be accommodated and the transmission of forces can be optimized.

The working mode of wedge drive usually includes working stroke and return movement. During the working stroke, the slide is moved outwards between the sliding surfaces of the driver and the slide receiver, which slide surfaces are arranged in a wedge-shaped form, in which case the slide receiver and the drive can be perpendicular to each other Earth movement, driven by extrusion stroke. In this respect, the pressing force exerted by the pressing tool corresponds to the reaction force exerted by the wedge drive to do work therethrough such as cutting, piercing or post-forming body parts, wherein according to the relative position of the individual sliding surfaces relative to each other Each angular position, which is assigned to the sliding surface. Due to the provision of sliding surfaces which are arranged at an angle relative to each other and which are arranged in a roof shape or prism shape relative to each other, the movable slider is between the slider receiving means and the drive Or be centered automatically on its sliding surface. This makes it possible to provide the slide with very high movement precision and lateral guidance, while manufacturing tolerances or other errors resulting from manufacturing can be compensated for and thus no longer have adverse effects.

During the return movement of the slide, called the backward stroke, in which the pressing tools are moved away from each other and thus the slide receiver is moved away from the drive, the slide is retracted to be located between the slide receiver and the drive within the area. The dovetail shape of the guide between the slide receiver and the slide in turn allows a self-centering linear guidance of the slide. When the pressing tool is moved away, only the weight of the slide and the retraction force acting on the slide receiver, slide and driver are limited to the force acting on the slide in the backward stroke or in the return movement. force.

The size of the sliding surfaces of the slide and slide guide running against each other in this case can be reduced relative to the sliding surfaces running against each other during the working stroke, so in this respect it is found that the above-mentioned L-shape is more important than the wedge-shaped Ideal for sliding surfaces on tenon guides.

With the upper part slide or wedge drive suspended, the weight of the slide acts on the surface of the slide receiver which bears in effective locking relation against the slide slide surface of the dovetail guide arrangement, and A downwardly directed spreading force is applied to those surfaces of the slider receiver. However, due to the effective locking shoulder support of the slide relative to the slide receiver, those lateral thrusts are compensated, thereby permanently and stably fixing the slide to the slide receiver and between the slide and the slide receiver. slide plate on the unit. The fastening screw of the sliding plate is therefore not subjected to any forces, in particular not tension, which would damage it, for example. With the aid of dovetail guides, the guidance of the slide along the slide receiver can be achieved without providing additional components in the shape of a linear guide, with a high degree of precision and insensitivity to lateral thrusts and cheap manufacturing, which The result is a compact wedge drive with a very high level of motion precision, which is also insensitive to manufacturing tolerances. Since clamping guides or other elements are no longer required, not only can the costs be reduced compared to prior art solutions, but the reliability of the process is also increased and the possible risk of accidents is reduced. The assembly of the wedge drive is simplified compared to prior art solutions, since the slider only has to be pushed into the slider receiver. It is possible to dispense with an expensive grinding operation in the guide, since the slide receiver, the prismatic guide or the dovetail guide of the slide and drive are not sensitive to manufacturing tolerances. The self-centering effect achieved by the prismatic guides also produces a very high precision of movement with regard to carrying lateral thrusts. Due to the compact design of the wedge drive, it is not only suitable for the small installation space obtained in the extrusion tool, but also, as will be known, for applications including larger dimensions. Prismatic guides or dovetail guides arranged between slide and slide receptacle can thus be used to equip small, medium and large wedge drives, thus providing a greater range of use. Exemplary embodiments are described in more detail hereinafter with reference to the accompanying drawings in order to more fully describe the present invention.

Description of drawings

1 shows a vertical cross-sectional view through a first embodiment of a wedge drive according to the invention with a dovetail-like guide;

Figure 2 shows a perspective view of the slider receiver and the slider of the wedge drive of Figure 1;

Figure 3 shows a perspective exploded view of the slider receiver and slider of Figure 2;

Figure 4 shows a perspective view of a second embodiment of a wedge drive according to the invention with a dovetail-like guide located between the slide and the slide receiver;

Figure 5 shows a perspective view of the wedge driver of Figure 4 without the drive;

Figure 6 shows a perspective side view of the wedge driver of Figure 4;

Figure 7 shows a transverse plan view of the wedge driver of Figure 4;

Figure 8 shows a cutaway side view of the wedge driver of Figure 4;

FIG. 9 shows a perspective view obliquely from above of the wedge drive shown in FIG. 4 with the receiving device of the processing tool installed;

Figure 10 shows a perspective view of the wedge driver provided with the receiving means for the processing tool shown in Figure 9 with the driver removed; and

FIG. 11 shows a perspective view of the wedge drive of FIG. 10 with the receptacle of the processing tool removed and the driver removed.

Detailed ways

Figure 1 shows a cross-sectional view of a wedge drive 1 or cotter key comprising a slide receiver 2, a slide 3 and a receiver 4 for receiving a machining tool. The drive connected to the slider 3 is not visible in FIG. 1 , but can be found in the perspective view of FIG. 4 .

The slide and slide receiver are connected together by means of dovetail or prismatic guides 6 . In this case, the slide 3 has a portion 30 of a dovetail-like structure. It comprises two sliding surfaces 31 , 32 , 33 , 34 which are arranged on both sides at an angle to each other. In this arrangement, the two sliding surfaces 31 and 33 are smaller than the two sliding surfaces 32 and 34 . The reason for this is that during the working stroke the pressing force exerted by the pressing tool in which the wedge drive is arranged is transmitted from the slider receiver to the slide by means of the sliding surfaces 32 , 34 . During the return movement or the backward stroke (stroke) movement of the extrusion tool, the slider is retracted by means of the two sliding surfaces 31, 33, in which case a much smaller force is exerted on the slider, so for These smaller dimensions of the sliding surface are sufficient.

The slider receiver 2 has a portion 20 of correspondingly opposite and identical construction and includes respective sliding surfaces 21 to 24, each of which rests in an operatively locking relationship against the sliding surfaces 31 to 34 . Furthermore, in the slider receiving device 2 , this portion 30 of the dovetail-like structure engages in an effective locking relationship via the protrusion 35 into the corresponding recess 25 . The protrusion 35 may extend only over a part of the longitudinal extension of the slide and over the slide receiver, respectively.

In principle, it is also possible not to provide such a protrusion, but in this case, the mutual holding of the slider and the slider receiving device is significantly improved by means of such a protrusion 35 which effectively locks the Tightly engages into a corresponding recess 25 of the slider receiver.

As can further be seen from FIG. 1 , slide plates are arranged on the slide receiver and the slide to form respective slide surfaces 21 to 24 and 31 to 34 . The cross-section of the slide plates 26, 27 on the slide receiver 2 is an L-shaped cross-section, while separate flat slide plates 36, 37, 38, 39 are attached to the corresponding surfaces of the slide, as seen from FIG. as can be seen better. The L-shaped slide plates 26 , 27 are fixed to the slide receivers by means of fixing screws 28 , 29 . The slide plates 36 to 39 are also fixed to the slide by means of corresponding fixing screws, but these are not shown in FIG. 1 .

This releasable fastening of the slide plate to the slide receiver and to the slide, respectively, allows the slide plate to be replaced without any problems in the event of wear. The fixing screws are arranged in sunken relationship in the sliding plate, so that the arrangement of the fixing screws does not prevent sliding of the sliding surfaces against each other.

As can be clearly seen in particular from the cross-sectional view of FIG. 1 , the slider receiving device protrudes outwards in the region of the dovetail guide, thereby providing a sufficiently large sliding surface 22, 24 for support and Slide on slide 3.

As can further be seen from FIG. 1 , the receiving device 4 for receiving the machining tool is provided with a T-shaped protrusion 40 and the slide 3 is provided with a corresponding T-shaped groove 41 . With this arrangement, the receptacle of the processing tool can easily be pushed into the T-groove 41 , so that simple fixing and reliable holding on the slide is possible. Instead of T-shaped grooves and T-shaped protrusions, it is also possible to provide wedges with corresponding grooves and protrusions in that area, so that also a centering effect can be provided and transverse thrust can be carried in that area. However, no movement of the slide relative to the receiving device is provided, and in most cases it is sufficient to provide a T-shaped groove and a T-shaped protrusion.

FIG. 2 shows a perspective view obliquely from below in a detail of the slider receiver and the slider. These two elements are shown separately so that the slide plates 26 , 27 of the slide receiver 2 and the dovetail shaped portion 20 of the slide receiver 2 can be seen. Furthermore, the part 30 of the slide is clearly visible, which is a dovetail-like structure and to which the slide plate is fastened, its fastening by means of screws is also indicated. As can be seen even better from the perspective exploded view of FIG. 3 , each slide plate is fixed to the slide receiver and to the slide, respectively, by means of three fixing screws. The slide plate has corresponding holes for receiving set screws.

FIGS. 2 and 3 also show a wedge-shaped receiving surface 300 for connection to the driver 5 , which can be seen in FIG. 4 . The wedge-shaped receiving surface 300 is divided in two and has two sliding surfaces 301 , 302 to which the respective sliding plate is connected, but the sliding plate cannot be seen in FIGS. 2 and 3 . The wedge-shaped receiving surface 300 is angled with respect to the dovetail-shaped part 30 and the side with a T-shaped groove 41 for receiving the receiving means of the processing tool, thus providing an extremely compact structural shape for the slide , with virtually no unused side surfaces. This can also be seen in particular from the perspective view of the assembled wedge drive 1 shown in FIG. Assembled. It can also be seen in this respect that the driver and the slider are connected together by means of the active return clip 7 . They serve to better entrain the slide during the backward stroke movement of the extrusion tool. Effectively the return clip 7 engages on the slide and drive in openings, recesses or grooves provided there.

As can be clearly seen from FIG. 5 , for this purpose the active return clip 7 has a protruding portion 70 which can engage in a corresponding groove of the drive. It can also be seen from FIG. 5 that the sliding plates 303 , 304 are fixed on the sliding surfaces 301 , 302 by means of fixing screws 305 .

The perspective view of the wedge drive 1 in FIG. 6 ( FIG. 6 is rotated by 90° relative to the view in FIG. 4 ) shows a view of the receiving device 4 for receiving a machining tool. It will be seen in this respect that the receiving means 4 are provided with respective wedge surfaces comprising two sliding surfaces 43 , 44 which are slidable on respective wedge portions 50 of the drive 5 .

It can be seen even better from the side view of the wedge drive 1 shown in FIG. At an angle to each other, the T-shaped grooves 41 are intended to receive the receiving means 4 of a machining tool for the slide 3 . Each of the sides of the slide is also at an angle relative to a vertical or horizontal line respectively, which is indicated by dashed lines 8 , 9 in FIG. 7 . Here again it can be clearly seen that the wedge drive has an extremely compact design.

The corresponding side view in section of the wedge drive 1 shown in FIG. 8 also shows the spring element 10 in the form of a gas pressure spring. During the backward stroke movement of the machining tool, it is used to retract the slide to its starting position. This facilitates the retraction movement of the slide during the backward stroke movement, so that the working stroke can again be carried out more quickly. However, depending on the respective construction of the wedge drive, it is even possible to dispense with such a spring element, especially if a specially designed active action return device in the form of an active action return clip 7 is provided, for example in the active action with rolling friction elements. Returning to the form of the device, such a spring member can be omitted.

It can also be clearly seen from the perspective view of the wedge driver 1 in FIG. The T-shaped groove of the receiving device 4 and the wedge-shaped receiving surface for cooperating with the driving part 5, so that the slider has an extremely compact structure.

As shown in Figure 10, the perspective view of the wedge driver 1 (driver 5 removed) seen from below shows that the sliding plates 303, 304 can have such a length that they also engage in the receiving device of the processing tool. Below the sliding surfaces 43, 44 of the wedge surface 42 of 4, that is to say, in addition to only sliding plates 303, 304, no more sliding plates are provided here, so this arrangement provides a corresponding wedge with the driver 5. Part 50 fits the integral surface.

From above, the slide plates 303 , 304 can again be seen in a perspective view of the wedge drive 1 with the receptacle of the processing tool removed, as shown in FIG. 11 . It is also evident in this respect that by means of the provision of holes 305 in the sliding plates 303, 304 and corresponding fixing screws (which screws are however not shown in Fig. 11), a suitable fixing to the receiving means of the processing tool is provided. With this method, the fixing of the receiving device 4 of the processing tool to the slide can also be further improved and an even more stable unit is provided.

The above-mentioned slide plates and slide receivers on the slide and drive preferably consist of bronze with a solid lubricant, so that the respective pairs of slide parts slide against each other particularly well. It should be appreciated that, in principle, it is also possible to use other materials for the sliding plate, wherein a lower degree of friction in the surfaces sliding against each other means that, during the working stroke of the pressing tool on which the wedge drive is arranged, And in the backward stroke, a particularly optimal movement of the slide within the wedge drive is possible.

In addition to the previously described and shown embodiments of wedge drives with dovetail-like or prismatic guides, many other embodiments are possible in which the dovetail-shaped sliding A surface is provided between the slider receiver and the slider, or a prismatic guide is provided between the slider and the driver and the slider receiver and the slider. Compared with the prior art, this significantly increases the respective precision of the movement of the slide between the slide receiver and the drive, lateral thrusts are absorbed and manufacturing tolerances of the slide receiver, slide and guide are reduced compensate. Only one dovetail-shaped or prismatic guide is provided between the slide receiver and the slide, so that more components contributing to the guiding action can be saved and thus the production costs of the wedge drive are significantly higher than those of the prior art reduce.

Explanation of reference signs

1 wedge drive

2 slider receiving device

3 sliding parts

4 Receiving device for processing tools

5 drive parts

6 dovetail or prismatic guides

7 effective function return clip

8 vertical lines

9 horizontal lines

10 spring parts (gas pressure spring)

20 parts

21 sliding surface

22 sliding surface

23 sliding surface

24 sliding surface

25 recessed part

26 L-shaped sliding plate

27 L-shaped sliding plate

28 set screws

29 set screw

30 Sections of dovetail

31 sliding surface

32 sliding surface

33 sliding surface

34 sliding surface

35 protrusion

36 slide plate

37 slide plate

38 slide plate

39 slide plate

40 T-shaped protrusion

41 T-groove

42 wedge surface

43 sliding surface

44 sliding surface

50 wedge parts

70 Protrusions

300 wedge receiving surface

301 sliding surface

302 sliding surface

303 sliding surface

304 slide plate

305 holes

Claims (20)

1. a Wedge drive (1), comprise sliding part receiving unit (2), movable sliding part (3) and actuator (5), wherein slidingsurface (301,302) is set between this sliding part (3) and this actuator (5), it is characterized in that dovetail shape or prismatic guide (6) are set between this sliding part (3) and this sliding part receiving unit (2).

2. Wedge drive according to claim 1 (1) is characterized in that, slidingsurface (21,22,23,24,31,32,34) is set on sliding part (3) and/or the sliding part receiving unit (2).

3. Wedge drive according to claim 2 (1), it is characterized in that, this dovetail shape or prismatic guide (6) comprise at least two sliding panels (26,27,36,37,38,39), and these at least two sliding panels are arranged to be oriented relative to one another to an angle.

4. according to claim 1 or 2 described Wedge drives (1), it is characterized in that the cross section of the sliding panel (26,27) of this dovetail shape or prismatic guide (6) is for roughly L shaped.

5. according to each described Wedge drive (1) of aforementioned claim, it is characterized in that in each case, two sliding panels (36,37,38,39) are set, these two sliding panels (36,37,38,39) are arranged to be oriented relative to one another to an angle.

6. according to each described Wedge drive (1) of aforementioned claim, it is characterized in that this dovetail shape or prismatic guide (6) comprise the effective locking connecting portion that is positioned between this sliding part (3) and this sliding part receiving unit (2).

7. according to each described Wedge drive (1) of claim 2-6, it is characterized in that this sliding part receiving unit (2) has outstanding structure in the receiving unit of the zone of slidingsurface (21,22,23,24) and/or sliding panel (26,27).

8. according to each described Wedge drive (1) of claim 2-7, it is characterized in that, sliding panel (26,27,36,37,38,39) releasably is fixed on sliding part receiving unit (2) and/or the sliding part (3), fixes by hold-down screw (28,29) particularly.

9. according to each described Wedge drive (1) of aforementioned claim, it is characterized in that the wedge guide is set between this sliding part (3) and this actuator (5).

10. Wedge drive according to claim 9 (1) is characterized in that, this wedge guide (50,300) comprises two sliding panels (303,304), and these two sliding panels are arranged to be oriented relative to one another to an angle.

11., it is characterized in that this dovetail shape or prismatic guide (6) and this wedge guide (300) are oriented relative to one another to an angle and are arranged on this sliding part (3) according to claim 9 or 10 described Wedge drives (1).

12., it is characterized in that this dovetail shape or prismatic guide (6) and this wedge guide (300) are set at two contiguous mutually sidepieces of this sliding part (3) according to each described Wedge drive (1) of aforementioned claim.

13. one kind is used for Wedge drive (1), the sliding part (3) of each described Wedge drive (1) of claim especially as described above, it is characterized in that this sliding part (3) has dovetail shape or prismatic sidepiece (30).

14. sliding part according to claim 13 (3), it is characterized in that, this dovetail shape or prismatic sidepiece (30) have the contact surface (31,32,33,34) as slidingsurface, and this contact surface is specifically used for the connection of sliding panel (36,37,38,39).

15. sliding part according to claim 14 (3) is characterized in that, respectively is provided with two sliding panels (36,37,38,39), this sliding panel is arranged to be oriented relative to one another to an angle.

16. according to each described sliding part (3) in claim 13 and 15, it is characterized in that, second sidepiece is configured to be in proximity relations with the first dovetail shape or prismatic sidepiece (30), and this second sidepiece has at least one the wedge guide surface (300) that is used for to the connection of this actuator (5).

17. sliding part according to claim 16 (3) is characterized in that, at least one sliding panel (303,304) is set, this at least one sliding panel is used for to the connection of this at least one wedge guide surface.

18., it is characterized in that this sliding part (3) has the 3rd sidepiece of contiguous other two sidepieces according to each described sliding part (3) of claim 13-16, the 3rd sidepiece has the receiving unit that is used to receive machining tool.

19. sliding part according to claim 18 (3), it is characterized in that, the 3rd sidepiece has at least two undercut construction and/or groove (41), and this undercut construction and/or groove are used for the insertion of the prodger (40) of receiving unit (4), and this receiving unit is used to receive machining tool.

20., it is characterized in that the 3rd sidepiece is provided with at least one wedge surface according to claim 18 or 19 described sliding parts (3).

Images