EP1893365B1 - Tool fastening device for a cam drive - Google Patents

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

The invention relates to a top wedge drive with a tool fastening device with at least one provided with a tool side surface, wherein the wedge drive comprises a slider element and a driver element and wherein the tool fastening device is mounted down in relation to the upper wedge drive in its working position disassembled. The invention further relates to a tool fastening device for a wedge drive with a slide element and a driver element, wherein the tool fastening device has at least one provided with a tool side surface and a connecting device for positive and / or non-positive connection with the slide element. Such a top wedge drive and such a tool fastening device are known from EP-A-0484588 known.

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 that have undercuts and other irregularly shaped portions, the problem that they can not be edited with punching or pressing in the vertical direction or pressing, so for this purpose wedge drives must be used , 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. A wedge drive can be arranged depending on the application 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 in the lower or in the upper part of the pressing tool is arranged. 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 an executive member of a pressing tool and serves the drive, e.g. a punch, cutting knife 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 pre-assemble the cutting and forming tools outside of the wedge drive and the pressing tool with machining tools, so that the change of tools can be done quickly and easily ,

Such a tool fastening device is for example in the DE 198 60 178 C1 disclosed. 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 fastening device 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 retraction movement, the tool fastening device must also neither bend nor be torn off the wedge drive or pulled out of their position, even if a tool attached to it when punching or molding hooks in the respective workpiece and thereby causes a resistance that are overcome when retreating got to. As a rule, retraction forces of about 10 to 15 percent of the workforce occur, that is also not inconsiderable forces that the tool fastening device must be able to endure.

According to the DE 198 60 178 C1 the mounting plate is removable via fastening screws accessible from the rear, wherein the fastening screws are arranged in the horizontal direction, ie in the working direction of the wedge drive. Would the mounting plate perpendicular or at least obliquely to the direction of the wedge drive arranged, the mounting screws would have to be quite large, which is hardly possible due to the very limited 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. Usually such small tolerances can not be achieved with the known tool fastening devices, not even with the DE 198 60 178 C1 ,

A top wedge drive and a tool attachment device of the type mentioned are from the EP-A-0484588 known. At the pointing in the direction of the wedge drive end face of the slider element, a plate-shaped tool fastening device for a punch is mounted by running in the direction of screws. For disassembly of the tool fastening device from the slide element, first the screw connection between the tool and the tool fastening device is to be released. Thereupon, the screws holding the tool fastening device on the slide element can be released in the working direction. Subsequently, the plate-shaped tool fastening device can be removed from the relevant end face of the slide element from its position in any direction perpendicular to the working direction of the slide element.

The present invention has for its object to provide a top wedge drive with a tool fastening device and a tool fastening device for such a wedge drive, wherein the above requirements are met in terms of repeatability and tolerances, so that an operator its manufacturing costs and maintenance can reduce, with the tool attachment device easily disassembled from the wedge drive, however, can be repeatedly positioned on the wedge drive and fixed there during assembly, even stable and sits in position relative to the high forces in the press insert accurately.

The object is achieved with a top wedge drive according to the features of claim 1 and a tool fastening device according to the features of claim 11. Further developments of the invention are defined in the dependent claims.

By providing at least one guide prism and / or at least one prismatic recess and / or at least one prism section as connecting means for connecting to the drive element of the wedge drive, it is advantageously possible to support the tool fastening device on the drive element even during the movement during the machining of a workpiece, So when driving and retreat, to produce.

The tool fastening device according to the invention for a wedge drive, which is positively and / or non-positively connected with 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 assembly of the tool fastening device in the desired minimum range of less than 0.02 mm even after the change or change of the tool mounted thereon. Because 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 position 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 the DE 19860 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, even without such a complete divergence of driver and slide element to dismantle the tool attachment of the wedge drive, not only a lighter change, but also a cost saving is possible because the change of the tool attachment device can be done faster than this State of the art is possible.

In the meantime, the use of standard wedge drives produced 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 here on a mounting plate according to the DE 198 60 178 C1 fall back, whereby his effort is already 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 DE 198 60 178 C1 on. 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 with the driver element, a secure connection with both elements and thus a positioning and a stop against Allow 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 connections beyond the tool fastening device, it is possible to easily maintain a specific positioning even under high pressing forces. Especially during propulsion, bending of the tool fastening device can be avoided in this case since the tongue and groove connection can also be acted upon optimally with higher compressive forces and, because of the positive connection, the tool fastening device does not yield, 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 at least one guide prism and / or the at least one prismatic recess are formed integrally with the main 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.

The manner in which the guide prism is connected to the tool fastening device, whether integral therewith or merely connected thereto, 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 in each case depending on the size of the wedge drive, thus also of the forces occurring during workpiece machining.

The guide prism can, in order not to represent a hindrance when sliding on the driver 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 side opposite the guide prism 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. However, the tool fastening device on the side to which it is removable from the wedge drive, at least one fastening means, in particular a screw to be attached to the wedge drive. 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 corresponding one Shaping on which allows attacking 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 retaining tab element to the driver element and to extend over the surface of the slider element and slide along it, in particular at a recess or groove provided there, which optionally can 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, wherein a movement of the slider element along the driver element is permitted.

Figur 1

eine perspektivische Ansicht eines Keiltriebs mit einer erfindungs- gemäßen Werkzeugbefestigungseinrichtung,

Figur 2

eine perspektivische Ansicht von unten auf die Werkzeugbefesti- gungseinrichtung gemäß Figur 1,

Figur 3

eine perspektivische Ansicht der Werkzeugbefestigungseinrichtung gemäß Figur 1 und Figur 2 ohne Führungsprisma,

Figur 4

eine perspektivische Ansicht eines Keiltriebs mit einer erfindungs- gemäßen Werkzeugbefestigungseinrichtung in einer zweiten Aus- führungsform mit Gleitplatten,

Figur 5

eine perspektivische Explosionsansicht von unten auf den Keiltrieb mit Werkzeugbefestigungseinrichtung gemäß Figur 4,

Figur 6

eine perspektivische Ansicht des Keiltriebes gemäß Figur 5 mit Werkzeugbefestigungseinrichtung mit prismatischer Aussparung, ohne Gleitplatten,

Figur 7

eine perspektivische Ansicht eines Oberteil-Keiltriebs mit einer drit- ten Ausführungsform einer erfindungsgemäßen Werkzeugbefesti- gungseinrichtung,

Figur 8

eine perspektivische, teilweise Explosionsansicht eines Teils des Oberteil-Keiltriebs gemäß Figur 7,

Figur 9

eine perspektivische Ansicht des Oberteil-Keiltriebs gemäß Figur 8 in der Blickrichtung von unten,

Figur 10

eine perspektivische Ansicht eines Oberteil-Keiltriebs mit einer vier- ten Ausführungsform einer erfindungsgemäßen Werkzeugbefesti- gungseinrichtung,

Figur 11

eine perspektivische Ansicht des Oberteil-Keiltriebs gemäß Figur 10 in der Blickrichtung von unten,

Figur 12

eine perspektivische Ansicht eines Teils des Oberteil-Keiltriebs ge- mäß Figur 10,

Figur 13

eine perspektivische Ansicht eines Oberteil-Keiltriebs mit einer fünf- ten Ausführungsform einer erfindungsgemäßen Werkzeugbefesti- gungseinrichtung,

Figur 14

eine perspektivische Ansicht von unten auf einen Teil des Oberteil- Keiltriebs gemäß Figur 13,

Figur 15

eine perspektivische Teilexplosionsansicht des Oberteil-Keiltriebs gemäß Figur 14, ohne Führungsprisma,

Figur 16

eine perspektivische Ansicht von unten auf die Teilexplosionsansicht gemäß Figur 15, und

Figur 17

eine perspektivische Ansicht auf den in den Figuren 15 und 16 dar- gestellten Teil des Oberteil-Keiltriebs in zusammengefügter Position.

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

3 is a perspective view of a wedge drive with a tool fastening device according to the invention;

FIG. 2

a perspective view from below of the Werkzeugbefesti- supply device according to FIG. 1 .

FIG. 3

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

FIG. 4

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

FIG. 5

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

FIG. 6

a perspective view of the wedge drive according to FIG. 5 with tool fastening device with prismatic recess, without sliding plates,

FIG. 7

3 is a perspective view of a top part wedge drive with a third embodiment of a tool fastening device according to the invention,

FIG. 8

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

FIG. 9

a perspective view of the upper part wedge drive according to FIG. 8 in the line of sight from below,

FIG. 10

3 is a perspective view of a top part wedge drive with a fourth embodiment of a tool fastening device according to the invention,

FIG. 11

a perspective view of the upper part wedge drive according to FIG. 10 in the line of sight from below,

FIG. 12

a perspective view of a portion of the upper part wedge drive according to FIG. 10 .

FIG. 13

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

FIG. 14

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

FIG. 15

a partial exploded perspective view of the upper part wedge drive according to FIG. 14 , without guide prism,

FIG. 16

a perspective view from below of the part exploded view according to FIG. 15 , and

FIG. 17

a perspective view of the in the FIGS. 15 and 16 represented part of the upper part wedge drive in assembled position.

FIG. 1 shows a perspective view of a first embodiment of a tool fastening device 10 in mounting on a wedge drive 1. The wedge drive comprises a slider element 2, a driver element 3 and a slider guide element 4, wherein the slider guide element 4 and slider element 2 are held together via a guide bracket 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 positively connected via a tongue and groove joint 11, 22 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 FIG. 2 can be removed, the base body 12 and the guide prism 14 are connected to each other via screws 15 which are inserted in corresponding passage openings 16, 17 in the guide prism and in the base body 12. Like also FIG. 2 can be removed, in each case a screw 15 in the guide prism 14 for attachment of this to the slide element is provided directly and corresponding to an opening 16, 17 in the guide prism 14 and the slider element 2. Because the guide prism 14 substantially over the extends entire overlay surface of the slider 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 even better grip of slide element and driver element to each other, or as a forced return device, especially on large wedge drives, where large mass accelerations may occur during operation, retaining tabs 50, 51 are provided on both sides of the slider element 2. The retaining tabs each overlap the guide prism 14 and are based on the driver element 3, as the FIGS. 1 and 3 withdrawn 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 via screws, as in FIG. 1 merely hinted. 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 cantilevered ends 52, 53 (FIG. Figures 2 and 3 ) in a corresponding recess or a correspondingly formed portion 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 include further projecting portions which allow forces to be transferred upon retraction of the slider member while engaging 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 via the guide prism 14 into the desired position, so that a frictional connection in this area is ensured during a machining operation, ie during operation of the wedge drive.

As in particular from the Figures 2 and 3 it can be seen, a mounting and dismounting of the tool attachment device is possible without any problems downwards in the direction of the driver element 3, wherein the wedge drive 1 is a top-plan 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 inventive Structure of the tool attachment device and a suitably equipped wedge drive a completely problem-free assembly and disassembly of the tool attachment 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 in the tool attachment device and the slide element in FIG. 1 provided laterally 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.

In the FIGS. 4 . 5 and 6 a further embodiment of a tool fastening device 200 according to the invention is shown. In this embodiment, the base body 212 and the guide prism are formed differently than in the embodiment according to FIG Figure 1 to 3 , In the in the FIGS. 4 . 5 and 6 illustrated embodiment, the main body 212 of the tool fastening device essentially L-shaped in the side view with an upright part section 211 and an approximately right-angled projecting 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 according to FIG. 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 portion 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 in the FIGS. 4 to 6 However, this embodiment is not shown, since the web is provided with recesses that could damage the driver prism and thus hinder 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, the FIGS. 4 to 6 but can not be removed. 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 interconnected by a transverse web 26, so that a stop for the lower portion 215 of the L-shaped main body of the tool fastening device is given. 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 to that in the FIGS. 1 to 3 illustrated embodiment of the wedge drive with tool fastening 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 as in the FIGS. 1 to 3 shown done.

As in the embodiment according to Figure 1 to 3 can in accordance with this embodiment FIGS. 4 to 6 When pressing and occurring during the machining of a workpiece pressing forces are transmitted via the guide prism directly to the tool attachment device, whereby a stable predicament during machining with respect to the tool attachment device is formed. 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.

In the FIGS. 7 to 12 a further embodiment of a tool fastening device according to the invention is shown in arrangement on a slide 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 For example, the upstanding upper portion 311 on its upper side facing the cantilevered portion of the pusher member does not have a cantilevered land, but rather has a recess 319 thereon. This recess 319 is surrounded on three sides by edge webs. A cantilevered portion 27 of the slider member has an engagement with the recess 319 toward the tool mounting means cantilever crossbar 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 good the FIG. 12 be removed.

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 done by changing the width extension and length extension of the base body and the prism sections. This is already the FIGS. 7 to 12 can be seen in which different width trained tool fastening devices and prism sections are shown. The prism sections may have different steep flanks to be adapted to the conditions of the driver prism.

Like that FIGS. 10 to 12 can be seen, the prism sections 320, 321 may protrude beyond the outside front extension 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.

The FIGS. 13 to 17 show a further embodiment of an equipped with a tool attachment device 400 according to the invention upper part wedge drive. This shell wedge drive differs from that in the FIGS. 1 to 3 illustrated in that the driver element 430 is not provided with an obliquely arranged driver prism, but with a substantially horizontally arranged driver prism 431. Accordingly, the slider element 420 is shaped so that sliding on the substantially 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 guiding prism is otherwise according to the training in the FIGS. 1 to 3 attached to 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 may be fastened to the slider element and the main body via screws, according to the embodiment in FIGS FIGS. 1 to 3 ,

In addition to the embodiments described above and shown in the figures of wedge drives and tool fastening means for this can still be thought within the scope of the claims numerous further, in each of which provided a positive and / or non-positive connection between the tool fastening device and the slide and driver element is. In particular, mixed forms of the tool fastening devices illustrated in the figures can also be designed within the scope of the claims as a function of the respective application request.

LIST OF REFERENCE NUMBERS

1

cotter

2

slide element

3

driving element

4

Cam guiding element

5

guide bracket

10

Tool fastening device

11

Projecting element of the tongue and groove joint

12

body

13

recess

14

guide prism

15

screw

16

screw

17

Through 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

crosspiece

29

bottom

31

driver prism

32

Area

50

retaining tab

51

retaining tab

52

Projecting end

53

Projecting end

200

Tool fastening device

211

part Of

212

body

213

prismatic recess

214

sliding plate

215

section

216

web

217

Through hole / recess

218

page

219

crosspiece

300

Tool fastening device

311

Towering section

312

body

313

longitudinal opening

314

longitudinal opening

315

Lower section

316

longitudinal web

317

longitudinal web

318

longitudinal web

319

recess

320

Prisma section

321

Prisma section

400

Tool fastening device

408

section

409

section

410

groove

411

groove

412

body

414

guide prism

420

slide element

422

web

423

web

424

groove

425

groove

428

section

430

driving element

431

driver prism

Claims (18)

1. An upper part wedge 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, wherein the wedge drive (1) has a slider element (2, 420), a slider guide element (4) and a driver element (3, 430) and whereby the tool fastening device (10, 200, 300, 400) is fastened to the slider element (2, 420) dismantleably downwardly in relation to the upper part wedge drive (1) in the working position thereof,
   characterized in that
   the tool fastening device (10, 200, 300, 400) is provided with at least one guide prism (14, 414) and/or at least one prismatic recess (213) and/or at least one prism portion (320, 321) for support on a driver prism (31, 431) of the driver element (3, 340).
2. An upper part wedge drive (1) as set forth in claim 1 characterized in that the tool fastening device (10, 200, 300, 400) can be dismantled at an angle 15 perpendicularly to the working direction of the wedge drive in the direction of the opened wedge drive.
3. An upper part wedge drive (1) as set forth in claim 1 or 2 characterized in that the wedge drive (1) has at least one portion which faces towards the tool fastening device (10, 200, 300, 400) and which to carry return traction forces 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 lockingly and/or force-lockingly connecting to the tool fastening device (10, 200, 300, 400).
4. An upper part wedge drive (1) as set forth in one of claims 1 through 3 characterized in that on the side towards which it is removable from the wedge drive the tool fastening device (10, 200, 300, 400) is fixed to the wedge drive by way of at least one fastening means, in particular screws.
5. An upper wedge drive (1) as set forth in one of claims 1 through 4 characterized in that the at least one guide prism is integral or adapted to be connectable to the main body of the tool fastening device.
6. An upper part wedge drive (1) as set forth in one of claims 1 through 5 characterized in that the prismatic recess (213) is provided block-like in the form of an element provided with one or more prismatic sliding surfaces adapted to the driver element (3) and/or is provided with sliding plates (214).
7. An upper part wedge drive (1) as set forth in one of claims 1 through 6 characterized in that to carry higher mass acceleration forces there is provided at least one lateral holding bar element (50, 51) which extends beyond the region of the at least one guide prism (14, 414) and/or the at least one prism portion (320, 321) to the driver element (3, 430).
8. An upper part wedge drive (1) as set forth in claim 7 characterized in that the at least one holding bar element (50, 51) engages laterally at or under the driver element.
9. An upper part wedge drive (1) as set forth in one of claims 1 through 8 characterized in that there are provided one or more holding noses (52, 53) for the transmission of forces when the slider element is pulled back, which can be brought into hooking engagement on the driver element or can be latched therein.
10. An upper part wedge drive (1) as set forth in one of claims 1 through 9 characterized in that the tool fastening device (10, 200, 300, 400) is of an L-shaped configuration in one or more parts, wherein a portion (14, 215, 315, 414) is arranged on the top side and/or the underside and a portion (12, 211, 311, 412) is arranged on the front side (21) of the slider element.
11. A tool fastening device (10, 200, 300, 400) for a wedge drive (1) having a slider element (2, 420), a slider guide element (4) and a driver element (3, 430), in particular as set forth in one of the preceding claims, wherein the tool fastening device (10, 200, 300, 400) has at least one lateral surface (19) which can be provided with a tool and a connecting device (11, 22, 219, 319, 408, 409, 410, 411) for positively lockingly connecting to the slider element
    characterized in that
    the tool fastening device (10, 200, 300, 400) has at least one connecting device (14, 213, 214, 215, 313, 314, 316, 317, 318, 414) for positively lockingly connecting to the driver element.
12. A tool fastening device (10, 200, 300, 400) as set forth in claim 11 characterized in that there is provided at least one surface (20) which is substantially parallel to the at least one lateral surface (19) which can be provided with at tool.
13. A tool fastening device (10, 200, 300, 400) as set forth in one of claims 11 or 12 characterized in that the connecting device for positively locking and/or force locking connection includes at least one guide prism (14, 414) provided on a side of the tool fastening device (10) and/or at least one prismatic recess (213) and/or at least one prism portion (320, 321) .
14. A tool fastening device (10, 200, 300, 400) as set forth in claim 13 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.
15. A tool fastening device (10, 200, 300, 400) as set forth in claim 13 characterized in that the at least one guide prism (14, 414) is in the form of a separate element and is connected to the main body (12, 412) of the tool fastening device (10, 400).
16. A tool fastening device (10, 200, 300, 400) as set forth in claim 13 or 15 characterized in that the at least one guide prism (14, 414) and the main body 20 (12, 412) of the tool fastening device (10, 400) are connected together by fastening means, in particular screws (15).
17. An upper part wedge drive (1) as set forth in claim 3 or a tool fastening device (10, 200, 300, 400) as set forth in one of claims 11 through 16 characterized in that the connecting device (11, 22, 25, 28, 219, 319, 408, 409, 410, 411, 422, 423, 424, 425) for positively locking connection is a tongue-and-groove connection.
18. A tool fastening device (10, 200, 300, 400) as set forth in claim 11 characterized in that the tool fastening device (10, 200, 300, 400) is meant for an upper part wedge drive (1) and is fastened dismantleably downwardly in relation to the upper part wedge drive in the working position thereof.

Images