EP1893365A1

EP1893365A1 - Tool fastening device for a v-belt drive

Info

Publication number: EP1893365A1
Application number: EP06776069A
Authority: EP
Inventors: Elke Weigelt
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-23
Filing date: 2006-06-22
Publication date: 2008-03-05
Anticipated expiration: 2026-06-22
Also published as: CA2610279C; JP5054681B2; DE102005029140A1; RU2008100761A; PL1893365T3; MX2007015651A; ES2355522T3; US20090173135A1; UA89996C2; CN101203338A; DE502006008232D1; DE102005029140B4; BRPI0612308A2; CA2610279A1; EP1893365B1; US8863566B2; WO2006136404A1; ATE486677T1; RU2404874C2; JP2008546538A

Abstract

The invention relates to an upper part V-belt drive (1) with a tool fastening device (10, 200, 300, 400) having at least one lateral surface (19), which can be provided with a tool, and the V-belt drive (1) has a slider element (2, 420) and a driver element (3, 430). According to the invention, the tool fastening device (10, 200, 300, 400) is fastened in a manner that enables it to be removed downward with regard to the upper part V-belt drive (1) when in the working position thereof. In a tool fastening device (10, 200, 300, 400) for a V-belt drive (1) with a slider element (2, 420) and with a driver element (3, 430), the tool fastening device (10, 200, 300, 400) comprises at least one lateral surface (19), which can be provided with a tool, and the tool fastening device (10, 200, 300, 400) has at least one connecting device (11, 14, 22, 213, 214, 215, 219, 313, 314, 316, 317, 318, 319, 408, 409, 410, 411, 414) for positively and or non-positively connecting with the slider and driver element.

Description

TOOL FIXING DEVICE FOR A WALK DRIVE

The invention relates to a top wedge drive with a tool fastening device having at least one side surface provided with a tool, wherein the wedge drive has a slide element and a driver element and a tool fastening device for such a wedge drive.

A wedge drive is used for the deflection of vertically acting forces of a press, which is used for the production of sheet metal parts, in particular body parts, in any direction deviating from the vertical direction. Especially in the manufacture of body parts occurs due to the component geometries, the undercuts and other irregularly shaped portions have the problem that they can not be edited with punching or pressing in the vertical direction or pressing punching, so used for this purpose wedge drives Need to become. Such wedge drives consist essentially of a slider guide element or guide bed, a driver element or drive wedge and a slide element or carriage, which transmits via the two other elements, the deflected due to the wedge shape direction of the pressing force. Depending on the application, a wedge drive can be arranged in the upper part or in the lower part of a pressing tool. Its effect is the same in both cases, namely the deflection of the forces generated by the pressing tool in a direction deviating from the vertical direction. Usually, the degree of deflection of the pressing force decides whether the wedge drive is arranged in the lower or in the upper part of the pressing tool. A deflection of up to 20 ° to the sole of the pressing tool (horizontal) is usually provided with wedge drives in the lower part of the pressing tool, whereas larger deflections are carried out in favor of a better removal possibility of the body parts from the pressing tool mostly by providing wedge drives in the upper part of the pressing tool. The degree of deflection otherwise depends on which machining operation is to be performed by the pressing tool, with wedge drives, in particular when punching passage openings, cutting partial areas of a body up to folding and reshaping undercut partial areas which can not be reached from above or below, be used. The wedge drive is thus only executive organ of a pressing tool and serves the drive, such as a punch, cutting blade or a forming jaw in the pressing tool. The wedge drive itself usually does not touch the workpieces. A touch or an intervention in the body parts is carried out only by the attached to the wedge drive tools (punch, cutting blade, mold jaws, etc.). The tools are respectively adapted to the inclination of the wedge drive to allow the obliquely oriented machining of a workpiece. Due to the obliquely oriented structure, it not only leads to manufacturing problems, but also to increased production costs. This can already be deduced from the fact that the entire wedge drive must be taken apart during the first construction, as well as when changing the stamping and form standard. However, this is very difficult in many cases, since the carriage of a drive wedge due to its non-angular outer shape only very bad in a vise etc. clamp. Thus, the attachment of processing tools often can only be done with very high and disproportionate cost.

To solve this problem, tool fastening devices have been developed which can be attached to the slider element of the wedge drive in order to be able to pre-assemble the cutting and forming tools also outside the wedge drive and the pressing tool with machining tools, so that the change of the tools is quick and unproblematic can be done.

Such a tool fastening device is for example in the

DE 198 60 178 C1 discloses. This tool fastening device, referred to as a mounting plate, is disassembled via fixing screws accessible from the rear, which means that it can only be dismounted if the slider element is moved so far upwards that it is accessible from the rear, ie from the driver element. The tool fastening device is designed as a rectangular plate and is arranged on the front side of the slider element and supported there by a shoulder down in the direction of the slider guide on the drive element. The tool fixture direction also has a T-shaped groove to transmit lateral thrusts on the carriage.

Such tool fastening devices have the great advantage that a change of worn tools as well as the initial construction in series production is greatly facilitated because only a small part of the wedge drive, namely the tool fastening device, disassembled and removed together with the tool to be replaced from the pressing tool will need. As a result, a time-consuming and usually very expensive complete disassembly of the entire wedge drive is replaced, which is usually quite labor intensive due to the often tight space in a press tool and the heavy accessibility of the wedge drive. However, it is necessary for the tool fastening device to meet the high demands on the tolerance and occurring forces within a pressing tool, which means, inter alia, that the tool fastening device must not release itself on its own and also laterally occurring thrusts must be intercepted. In addition, it should be easily accessible and reproducibly accurately assembled and disassembled to meet the high demands on the exact positioning of the tools on the wedge drive. Since wedge drives usually transmit forces of several hundred tons, it is necessary that the tool attachment device during the drive, so the operation, safely and firmly on the wedge drive sits without bending. In the retracting movement, the tool fastening device must also neither bend nor be pulled off the wedge drive or pulled out of their position, even if a tool attached to it when punching or molding hooks into the respective workpiece and thereby causes a resistance that are overcome during retraction got to. As a rule, retraction forces of about 10 to 15 percent of the workforce occur, ie also not inconsiderable forces that the tool fastening device must be able to endure.

According to DE 198 60 178 C1, the mounting plate is removable via fastening screws accessible from the rear, the fastening screws being arranged in the horizontal direction, that is to say in the working direction of the wedge drive. Would the mounting plate be perpendicular or at least oblique to the working direction of the wedge Driven arranged, the mounting screws would have to be quite large, which is hardly possible due to the very tight space in a press tool.

With a tool fastening device, it should be possible to avoid burring and unnecessary wear of the machining tools, wherein the tolerance or repeatability of the positioning of the tool fastening device should be no more than 0.02 mm. Normally, such small tolerances can not be achieved with the known tool fastening devices, not even with the according to DE 198 60 178 C1.

The present invention is therefore an object of the invention to provide an upper wedge drive with a tool fastening device and a tool fastening device for such a wedge drive, the above requirements are met in terms of repeatability and tolerances, so that an operator can reduce its manufacturing costs and maintenance, wherein the tool fastening device can be easily disassembled from the wedge drive, however, can be repositioned and fastened to the wedge drive during assembly, is itself stable and also sits positionally accurately in operation with respect to the high forces in the press insert.

The object is achieved for a top wedge drive according to claim 1, characterized in that the tool fastening device is mounted down in relation to the upper wedge drive in its working position disassembled. For a tool fastening device for such a wedge drive, the object is achieved in that the tool fastening device has at least one connecting device for positive and / or non-positive connection to the slider and driver element. Development of the inventions are defined in the dependent claims.

Thereby, a top wedge drive is created, in which due to the possibility of disassembly of the tool attachment device down in relation to the upper wedge drive in its working position, the great advantage is brought that good accessibility is given, and not about the access through Components such as a punching or cutting die, is difficult. A difficult accessibility to the fasteners is for example in DE 198 60 178 C1 is a problem that can not solve this document, however.

The tool fastening device according to the invention for a wedge lift, which is positively and / or non-positively connected to both the slider and the driver element, makes it possible for deposition to be substantially prevented during operation of the wedge drive. Furthermore, it is possible to keep the repeatability of the mounting of the tool fastening device in the desired minimum range of less than 0.02 mm, even after the tool has been changed or exchanged therewith. Due to the fact that the tool fastening device is positively and / or non-positively connected to both the slider and the driver element, support and positioning take place in at least two directions, whereby the desired positional accuracy can be achieved. Due to the possibility of being able to disassemble the tool fastening device at an angle substantially perpendicular to the working direction of the wedge drive in the direction of the open wedge drive, there is better accessibility to the fastening device or fastening means with which the tool fastening device is fastened to the wedge drive. In the structure according to DE 198 60 178 C1, the slider and the driver must first be moved very far apart in order to be able to detach and remove the mounting plate from the slider. Due to the advantageous possibility of being able to disassemble the tool fastening device from the wedge drive even without such a complete moving apart of the driver and slide element, not only a lighter change, but also a cost saving is possible since the change of the tool fastening device can be faster than this is possible in the prior art.

In the meantime, the use of standard wedge drives manufactured in series is common, which means that the buyer can order a standard finished wedge drive from stock. Only the mounting holes of the respective cutting and forming tools, ie processing tools, the buyer still has to contribute individually. This means that the buyer has the Completely assembled wedge drive must completely dismantle to edit it on his own processing device for each area of application specifically, so in particular to be able to attach appropriate mounting holes for the processing tools on this. Basically, he can indeed fall back here on a mounting plate according to DE 198 60 178 C1, whereby his effort is already quite reduced, since this mounting plate is formed as a substantially flat plate with mutually parallel surfaces that can be easily clamped in a processing device. However, this mounting plate is not completely easy to install on any standard wedge drive and disassembled from this. By contrast, the installation effort with a tool fastening device according to the invention, which in contrast can be mounted very easily on a wedge drive and dismounted from this, can be reduced by 80%. The tool fastening device according to the invention, since it preferably has at least one of the at least one of the side surface provided with a machining tool, is very well suited for retrofitting since it allows it to be clamped much more easily in a vice, etc., of a machining device than an angle and most bizarrely shaped body of a carriage or slider element. Although the advantage of easy Einspannbarkeit already has the mounting plate according to DE 198 60 178 C1. In contrast to this, the tool fastening device according to the invention has the great advantage that its connecting devices, which enable a positive and / or non-positive connection with both the slider and the driver element, provide a secure connection with both elements and thus a positioning and a Hold against tilting and moving in different directions.

By providing the tool fastening device according to the invention, significant cost advantages with respect to the production and maintenance of a wedge drive, for example, the total operating and Erstbearbeitungskosten over the manufacturing period, which is covered with a wedge drive, away, can be reduced to below 50%. Just the operating and initial processing costs can otherwise be a multiple of what costs a wedge drive in the purchase at all. Preferably, the connecting device for positive connection is a tongue and groove joint. By providing such a tongue and groove joint or a plurality of such joints across the tool fastening device, it is possible to easily maintain a certain positioning even under high pressing forces. Bending of the tool fastening device can be avoided in this case as well, since the tongue and groove connection can also be subjected optimally to higher compressive forces and because of the positive connection the tool fastening device does not evade, but acts as a unit with the wedge drive. Even with the withdrawal of the machining tool from the workpiece, in which otherwise the machining tool easily get caught in the workpiece and thus can apply a resistance to retraction, a positive connection, such as a tongue and groove joint, proves to be particularly advantageous, as well as the Tool attachment device remains stable in their positioning on the wedge drive.

Preferably, the connecting device for force-locking connection comprises at least one guide prism provided on one side of the tool fastening device and / or a prismatic recess. Particularly preferably, the at least one guide prism and / or the at least one prismatic recess are formed integrally with the base body of the tool fastening device. Alternatively, the at least one guide prism is designed as a separate element and can be connected or connected to the main body of the tool fastening device. Particularly preferably, the at least one guide prism and the base body of the tool fastening device can be connected or connected to one another by fastening means, in particular screws. By providing a guide prism as a connecting device for connecting, in particular with a driver element of the wedge drive, it is advantageously possible to produce a support of the tool fastening device on the driver element during movement during the machining of a workpiece, ie during propulsion and retreat. The manner in which the guide prism is connected to the tool fastening device, whether it is integral with it or only connected to it, can be made dependent on the respective size of the wedge drive and its other construction. The guide prism can block-like as one, provided with adapted to the driver element prismatic sliding surface element or slidable be formed. Alternatively, only a prismatic recess may be provided. The respective training can be made dependent on the forces to be absorbed. A one-piece design of the tool fastening device and the guide prism is particularly suitable for smaller wedge drives, whereas the formation of the guide prism as a separate element is particularly suitable for medium and large wedge drives, here also the guide prism can be formed only as a narrow plate member or a compact component, also depending on the size of the wedge drive, ie also on the forces occurring during workpiece machining.

The guide prism may, in order not to represent a hindrance when sliding on the drive element, advantageously with fastening means which are arranged in the longitudinal direction of the tool fastening device and at least partially recessed in the guide prism body, be provided. For disassembly of the guide prism of the tool mounting device, only the slide element is moved in the machine direction, in which case the corresponding fasteners are accessible from below in the upper wedge drive in its working position, so that disassembly of the tool fastening device can be done easily. Advantageously, the tool fastening device can be disassembled at an angle perpendicular to the working direction of the wedge drive in the direction of the open wedge drive, during assembly or disassembly down with respect to the working position of a top wedge drive. The approximately vertical angle to the working direction of the wedge drive leads to easy accessibility during assembly and disassembly of the tool fastening device.

Preferably, the wedge drive configured according to the invention has at least one section pointing toward the tool fastening device, which, for receiving retraction forces, has at least one connecting device for form-fitting. and / or non-positive connection with the tool fastening device. Preferably, such a connecting device for the positive connection of a tongue and groove joint, which is particularly preferably provided on the guide prism opposite side of the tool fastening device. As a result, after assembly of the tool fastening device, the part which forms the positive-locking connection is pressed into the desired position and holds therein without additional fastening, eg via screws, etc. being required. Nevertheless, the tool fastening device on the side to which it can be removed by the wedge drive can be fastened to the wedge drive via at least one fastening means, in particular a screw. However, this is not absolutely necessary since, after the positioning of the tool fastening device between slide and driver elements, it is seated positively and non-positively.

For receiving higher mass acceleration forces, at least one lateral retaining tab element is preferably provided which extends over the region of the at least one guide prism to the driver element. Particularly preferably, the at least one retaining tab element engages laterally on or below the driver element. It also proves to be advantageous if the at least one retaining tab element extends between the slider element and the driver element, in particular is fastened to the slider element. Such a retaining tab element allows a fixation of the tool fastening device also in the lateral direction, ie in the direction in which the positive connection, at least if it is in the form of a tongue and groove joint, which is aligned only in one direction, no support. Although the provision of a guide prism basically provides the desired grip in this lateral direction. However, it proves to be advantageous, especially in the case of large occurring mass acceleration forces, in addition to the stable guide prism to also fix it laterally on the slide element via the retaining tab elements. Characterized in that the at least one retaining tab element slider element and driver element only laterally fixed to each other, further movement in the longitudinal direction of the driver element is possible, so is not hindered by the retaining tab elements. For this purpose, the at least one retaining tab element has a speaking shaping, which allows an attack on the driver element, but is not set to this. An attachment of the retaining tab element is preferably carried out on the slider element, since the slider element slides on the driver element. In principle, it is also possible to fasten a holding lug element to the driver element and to extend over the surface of the pusher element and slide along it, in particular at a recess or groove provided there, which optionally can also continue into the surface of the tool fastening device ,

Preferably, one or more retaining lugs are provided for transmitting forces during retraction of the slider element, which can be hooked to the driver element or latched therein. The latching takes place preferably in a corresponding groove or recess in the driver element, a movement of the slider element along the driver element being permitted.

For a more detailed explanation of the invention embodiments will be described in more detail below with reference to the drawings. These show in:

FIG. 1 shows a perspective view of a wedge drive with a tool fastening device according to the invention,

FIG. 2 shows a perspective view from below of the tool fastening device according to FIG. 1,

FIG. 3 shows a perspective view of the tool fastening device according to FIG. 1 and FIG. 2 without guide prism,

FIG. 4 shows a perspective view of a wedge drive with a tool fastening device according to the invention in a second embodiment with sliding plates,

5 shows an exploded perspective view from below of the wedge drive with tool fastening device according to FIG. 4, FIG.

6 shows a perspective view of the wedge drive according to FIG. 5 with tool fastening device with prismatic recess, without sliding plates, FIG. 7 shows a perspective view of a top wedge drive with a third embodiment of a tool fastening device according to the invention, FIG.

FIG. 8 shows a perspective, partially exploded view of a part of the upper part wedge drive according to FIG. 7,

FIG. 9 shows a perspective view of the upper part wedge drive according to FIG. 8 in the direction of view from below,

10 shows a perspective view of a top wedge drive with a fourth embodiment of a tool fastening device according to the invention, FIG.

FIG. 11 shows a perspective view of the upper part wedge drive according to FIG. 10 in the direction of view from below,

13 is a perspective view of a top wedge drive with a fifth embodiment of a tool fastening device according to the invention, FIG.

14 shows a perspective view from below of a part of the upper part wedge drive according to FIG. 13, FIG.

Figure 15 is a partial exploded perspective view of the top wedge drive of Figure 14 without the guide prism, Figure 16 is a bottom perspective view of the part exploded view of Figure 15, and Figure 17 is a perspective view of the top cam follower shown in Figures 15 and 16 in assembled position.

FIG. 1 shows a perspective view of a first embodiment of a tool fastening device 10 mounted on a wedge drive 1. The wedge drive has a slide element 2, a driver element 3 and a slide guide element 4, the slide guide element 4 and slide element 2 being held together by a guide clip 5 , The tool fastening device 10 is mounted on the slider element 2 on the front side 21 with its rear side 20 at. With the slider element 2, the tool fastening device 10 is formed via a tongue and groove joint 11, 22. conclusively connected. The tool fastening device 10 has a cantilevered element 11 and the slide element 2 has a groove 22. The protruding element of the tool fastening device 10 engages in a form-fitting manner in the groove.

On its side directed toward the driver element 3, the tool fastening device 10 has a recess 13 in its basic body 12 into which a guide prism 14 is inserted. The guide prism 14 is slidably mounted on a driver prism 31 of the driver element.

On the front surface 19 of the tool fastening device, a tool can be attached to an application-specific selected location. The attachment can be done easily before mounting the tool attachment device to the slider element.

As can be seen from FIG. 2, the main body 12 and the guide prism 14 are connected to one another via screws 15, which are inserted in corresponding passage openings 16, 17 in the guide prism and in the base body 12. As can likewise be seen from FIG. 2, a screw 15 in the guide prism 14 for fastening it to the slide element is also provided directly and correspondingly an opening 16, 17 also in the guide prism 14 and the slide element 2. As a result, the guide prism 14 itself extends substantially over the entire overlap area of slide element and driver element, not only a particularly good support of the slider element with body 12 relative to the driver element, but also a particularly good and tight fit on the driver element is possible.

In order to ensure an even better grip of slide element and driver element to each other or as Zwangsrück- recovery device, especially on large wedge drives, where large mass accelerations may occur during operation, holding tabs 50, 51, provided on both sides of the slider element 2. The retaining tabs each overlap the guide prism 14 and are supported on the driver element 3, as shown in FIGS. 1 and 3. can be. On the slider element, a recess 24 is provided for arranging the retaining tabs in each case, wherein the retaining tabs are secured in this by screws, as indicated in Figure 1 only. For this purpose, the retaining tabs in this area have holes and recesses to sink the screw heads so that there is no risk of separating them when installing the wedge drive.

The retaining tabs engage with projecting ends 52, 53 (FIGS. 2 and 3) formed as holding lugs in a corresponding recess or a correspondingly formed region 32 of the driver element. As a result, in the movement of the wedge drive, ie the slider element relative to the driver element, a secure hold of the two elements together additionally reinforced. The retaining tabs may additionally have further projecting portions which allow forces to be transmitted upon retraction of the slider member, catching in the driver member and assisting forced return.

The transmission of shear forces and thrusts occurs due to the positive connection of tool fastening device 10 and slide element 2 together and guide prism 14 and body 12 of the tool fastening device 10 to each other via the guide prism 14 and the driver prism 31, on which the guide prism 14 is placed. The main body 12 of the tool fastening device 10 itself is likewise pressed over the guide prism 14 into the desired position, so that a frictional connection in this region is ensured during a machining operation, ie during operation of the wedge drive.

As can be seen in particular from FIGS. 2 and 3, assembly and disassembly of the tool fastening device is possible without any problems downwards in the direction of the driver element 3, the wedge drive 1 being an upper-part wedge drive. As a result, the disadvantage of the prior art is avoided that in the direction of the slide guide element or another element, which has little space around it, a disassembly of the tool fastening device must be carried out. Rather, in the case of the invention According to the invention construction of the tool fastening device and a suitably equipped wedge drive a completely trouble-free assembly and disassembly of the tool fastening device to and from the wedge drive possible.

A precise position determination and positioning accuracy can be done for example by pin holes on the sides of the tool attachment device. Such pin bores are laterally provided in the tool fastening device and the slide element in Figure 1 and provided with the reference numeral 18, 23. In principle, these pin bores can likewise serve for fastening slide element 2 and tool fastening device to one another.

Due to the provision of the tongue and groove connections, ie positive connections, also the desired repeatability can be ensured with respect to the position or position of the tool attachment device on the wedge drive and the driver element, with an inaccuracy of less than 0.02 mm is possible. In addition, it is advantageously possible to clamp the base body in a corresponding processing device after disassembly of the tool fastening device and bring accurate holes for the attachment of punches, milling cutters, etc., since the front surface and the rear surface of the main body of the tool fastening device are formed substantially parallel to each other , As a result, a flat clamping and accurate positioning for the introduction of holes for attaching tools editing is completely easily possible, also with a very high repeatability, so that even after a change of a tool and / or the tool attachment device very high accuracy requirements can still be met.

FIGS. 4, 5 and 6 show a further embodiment of a tool fastening device 200 according to the invention. In this embodiment, the main body 212 and the guide prism are configured differently than in the embodiment according to FIGS. 1 to 3. In the exemplary embodiment illustrated in FIGS. 4, 5 and 6, the main body 212 of the tool holder is Fixing device substantially L-shaped in the side view with an upstanding portion 211 and an approximately at right angles protruding from this section 215. It has a prismatic recess 213 instead of the angular recess 13. The guide prism is formed by attaching sliding plates 214 on the surfaces of the prismatic recess 213. In the embodiment of Figures 4 and 5, two such sliding plates 214 are provided. These sliding plates rest on the driver prism 31. These sliding plates can be made relatively thin. An additional attachment of these to the base body 212 is possible via terminals and / or screws, which is indicated by the opening 217 in the base body 212. Any other type of attachment is possible between the sliding plates and the body. Via the openings 217, a position determination and positioning of the sliding plates 214 with the desired accuracy is possible. The prismatic recess 213 has a web 216 extending in the longitudinal direction of the lower section 215 of the L-shaped main body. At these boundary the sliding plates 214. The web thus also serves to position the sliding plates with the desired accuracy. If necessary, the driver prism 31 can also slide on this web 216 in the middle region. In the embodiment shown in FIGS. 4 to 6, however, this will not be done since the web is provided with recesses which could damage the driver prism and thus hinder its movement.

The lower portion 215 of the L-shaped main body has on the side facing the prismatic recess 213 to the slider element facing side 218 grooves, which can not be taken from Figures 4 to 6, however. In these grooves engage projecting webs 25 on the underside of the slider element 2, wherein the webs 25 are arranged in the longitudinal direction of the projecting portion 215 of the L-shaped base body of the tool fastening device. The two webs 25 are connected to one another by a transverse web 26, so that a stop for the lower section 215 of the L-shaped main body of the tool fastening device is provided. A desired movement of the tool fastening device in the transverse direction of the wedge drive can be advantageously prevented by the provision of the intermeshing webs 25 and grooves. Another positive connection between Slide element and base body is possible in the upper region of the base body by a transverse web 219 projecting there in combination with the groove 22 in the upper region of the slide element 2. The attachment thus corresponds in this case to the embodiment of the wedge drive shown in FIGS. 1 to 3 with the tool attachment device. The lower portion 215 of the L-shaped main body forms in principle an attached part of the main body 12 according to Figure 1 to 3. The other attachment via retaining tabs 50, 51 can be done as shown in Figures 1 to 3.

In the same way as in the embodiment according to FIGS. 1 to 3, in this embodiment according to FIGS. 4 to 6, pressing forces occurring during placement and during machining of a workpiece can be transmitted directly to the tool fastening device via the guide prism, whereby a stable predicament during machining with respect to the tool fastening device is achieved. direction arises. This in turn proves to be advantageous for the accuracy of the processing.

Via the screws introduced from below, that is to say from the side of the driver element onto which the tool fastening device is placed, the tool fastening device can be secured against falling off the slider element.

FIGS. 7 to 12 show another embodiment of a tool fastening device according to the invention arranged on a slider element with a driver element of a top wedge drive. The tool fastening device 300 in turn has an L-shaped main body 312. The L-shaped main body has an upwardly projecting portion 311 and a lower portion 315 arranged transversely thereto. In contrast to the embodiment according to FIGS. 4 to 6, the upwardly projecting upper section 311 does not have a projecting web on its upper side facing the projecting section of the slide element, but instead has a recess 319 on this upper side. This recess 319 is surrounded on three sides by edge webs. A projecting portion 27 of the slider element has, in order to engage in the recess 319, a direction towards the tool fastening tigungseinrichtung projecting transverse web 28 on. The transverse web 28 is advantageously essentially designed such that it fits in a form-fitting manner into the recess 319. The bridge can be particularly well taken from the figure 12.

The lower section 315 is in the form of three longitudinal webs 316, 317, 318. The longitudinal webs are fastened via screw connections on the underside 29 of the slide element 2. For this purpose, both the longitudinal webs and the underside of the slide element on holes or through holes, in which screws can be inserted.

The longitudinal openings 313, 314 formed between the central longitudinal web 317 and the outer longitudinal webs 316, 318 are formed so that prism sections 320, 321 can be inserted there. The prism sections 320, 321 sit on the driver prism 31 after assembly of the wedge drive. They are connected by screws or by clamping connection or a suitable other connection with the main body of the tool fastening device. An adaptation to different widths of the slider element and / or driver element or of its driver prism can be carried out by changing the width extension and longitudinal extent of the base body and the PMs maabschnitte. This can already be seen in FIGS. 7 to 12, in which tool attaching devices and prism sections of different widths are shown. The prism sections may have different steep flanks to be adapted to the conditions of the driver prism.

As can be seen from FIGS. 10 to 12, the prism sections 320, 321 may protrude beyond the outer front extent of the main body 312. However, if the tool to be attached to the outside of the tool fastening device is hindered by this, it is also basically possible to align the outer surfaces of the prism sections 320, 321 and the main body 312 with one another.

FIGS. 13 to 17 show a further embodiment of a top part equipped with a tool fastening device 400 according to the invention. Cotter key. This upper part wedge drive differs from that shown in FIGS. 1 to 3 in that the driver element 430 is not provided with an obliquely arranged driver prism, but rather with a driver prism 431 arranged substantially horizontally. Accordingly, the slide element 420 is shaped in such a way that sliding on the essentially horizontally arranged driver prism is possible. For this purpose, the slider element has a section 428 which is longer in the direction of the driver element. The extended portion engages around the guiding prism of the tool fastening device on three sides. As a result, a rearward hold for the guide prism 414 is given in the drive direction. The guide prism is otherwise attached according to the embodiment in Figures 1 to 3 on the slider element. The base body 412 of the tool fastening device is fastened to the slider element 420 via lateral grooves 410, 411, the slider element having correspondingly projecting webs 422, 423 and grooves 424, 425 in the longitudinal direction, into which correspondingly projecting sections 408, 409 of the base body engage. As a result, a positive and force-receiving attachment of the main body of the tool fastening device to the slide element is also possible. The guide prism 414 can be fastened to the slider element and the main body by means of screws, corresponding to the embodiment in FIGS. 1 to 3.

In addition to the embodiments described above and shown in the figures of wedge gears and tool fastening devices for these, numerous other can be devised, in each of which a positive and / or non-positive connection between the tool fastening device and the slide and driver element is provided. In particular, hybrid forms of the tool fastening devices shown in the figures can also be designed depending on the particular application request. LIST OF REFERENCE NUMBERS

1 wedge drive

2 slide element

3 driver element

4 slider guide element

5 guide bracket

10 tool fastening device

11 Projecting element of the tongue and groove joint

12 basic body

13 recess

14 guiding prism

15 screw

16 screws

17 passage opening

18 opening

19 front surface

20 Rear side

21 front

22 groove

23 pin hole

24 recess

25 Projecting bridge

26 Projecting crosspiece

27 Projecting section

28 crossbar

29 bottom

31 driver prism

32 area

50 holding tab

51 retaining tab

52 Projecting end

53 Projecting end

200 tool fastening device 211 subsection

212 basic body

213 prismatic recess

214 Sliding plate 215 section

216 footbridge

217 passage opening / recess

218 page

219 Cross bar 300 Tool fastening device

311 Towering section

312 basic body

313 longitudinal opening

314 Longitudinal opening 315 Lower section

316 longitudinal bar

317 longitudinal bar

318 longitudinal ridge

319 recess 320 prism section

321 prism section

400 tool fastening device

408 section

409 Section 410 Groove

411 groove

412 Base 414 Guide prism 420 Slide element 422 Bridge

423 footbridge

424 groove

425 groove

428 section 430 driver element

431 driver prism

Claims

claims

1. upper wedge drive (1) with a tool fastening device (10,200,300,400) with at least one provided with a tool side surface (19), wherein the wedge drive (1) has a slide element (2,420) and a driver element (3,430), characterized in that the Tool fastening device (10,200,300,400) down in relation to the upper part wedge drive (1) is removably mounted in its working position.

2. upper wedge drive (1) according to claim 1, characterized in that the tool fastening device (10,200,300,400) at an angle perpendicular to the working direction of the wedge drive in the direction of the open

Wedge drive is removable.

3. upper wedge drive (1) according to claim 1 or 2, characterized in that the wedge drive (1) at least one of the tool fastening device

(10,200,300,400) pointing portion which has at least one connection means (11,14,22,213, 214,215,219,313,314,316,317,318,319,408,409,410,411, 414) for positive and / or non-positive connection with the tool fastening device (10,200,300,400) for receiving retraction forces.

4. upper wedge drive (1) according to one of claims 1 to 3, characterized in that the tool fastening means (10,200,300,400) on the side to which it is removable from the wedge drive, via at least one

Fastening means, in particular screws, to which the wedge drive can be fastened or fastened.

5. upper wedge drive (1) according to one of claims 1 to 4, characterized in that the tool fastening device (10,200,300,400) with at least one guide prism (14,414) and / or at least one prismatic recess (213) and / or at least one prism section (320,321) for bearing on a driver prism (31, 431) is providable or provided.

6. upper wedge drive (1) according to claim 5, characterized in that the at least one guide prism with the main body of

Tool fastening device is integrally formed or connectable with this.

7. top wedge drive (1) according to claim 5 or 6, characterized in that the prismatic recess (213) block-like as a with the driver element (3) adapted prismatic / n sliding surface (s) provided element and / or with Sliding plates (214) is provided.

8. upper wedge drive (1) according to one of claims 1 to 7, characterized in that for receiving higher mass acceleration forces at least one lateral retaining tab member (50,51) is provided, extending over the region of the at least one guide prism (14,414) and / or the at least one prism section (320, 311) away up to the

Driver element (3,430) extends.

9. upper wedge drive (1) according to claim 8, characterized in that the at least one retaining tab member (50,51) engages laterally on or under the driver element.

10. upper wedge drive (1) according to one of claims 1 to 9, characterized in that one or more retaining lugs (52,53) are provided for transmitting forces during retraction of the slider element, which can be hooked to the driver element or latched in this.

11. upper wedge drive (1) according to one of claims 1 to 10, characterized in that the tool fastening device (10,200,300,400) is L-shaped one or more parts, wherein a portion (14,215,315,414) on the top and / or bottom and a partial section (12, 211, 311, 412) is arranged on the front side (21) of the slide element.

12. Tool fastening device (10,200,300,400) for a wedge drive (1) with a slide element (2,420) and a driver element (3,430), in particular according to one of the preceding claims, wherein the tool fastening device (10,200,300,400) has at least one provided with a tool side surface (19), characterized in that the tool fastening device (10,200,300,400) at least one connecting means (11, 14,22,213,214,215,219,313,314,316,317, 318,319,408,409,410,411, 414) for positive and / or non-positive

Having connection with the slider and driver element.

13. tool fastening device (10,200,300,400) according to claim 12, characterized in that at least one of the at least one provided with a tool

Side surface (19) is provided substantially parallel surface (20).

14. Tool fastening device (10,200,300,400) according to any one of claims 12 or 13, characterized in that the connecting means for frictionally connecting at least one provided on one side of the tool fastening device (10) guide prism (14,414) and / or at least one prismatic Recess (213) and / or at least one prism portion (320.321).

15. Tool fastening device (10,200,300,400) according to claim 14, characterized in that the at least one guide prism and / or the at least one prismatic recess is formed integrally with the main body of the tool fastening device.

16. tool fastening device (10,200,300,400) according to claim 14, characterized in that the at least one guide prism (14,414) formed as a separate element and with the main body (12,412) of the tool fastening device (10,400) connectable or connected.

17. Tool fastening device (10,200,300,400) according to claim 14 or 16, characterized in that the at least one guide prism (14,414) and the base body (12,412) of the tool fastening device (10,400) with each other

Fastening means, in particular screws (15), are connectable or connected.

18. upper wedge drive (1) according to claim 3 or tool fastening device (10,200,300,400) according to one of

Claims 12 to 17, characterized in that the connecting device (11, 22,25,28,219,319,408,409,410,411, 422,

423,424,425) for positive connection is a tongue and groove joint.