DE102011001672B4 - Device for forming workpieces - Google Patents

Abstract

The invention relates to a device for forming workpieces comprising: a) at least one plunger (10) on which at least a first forming tool (4), preferably by means of a tool carrier (2), is arranged and driven by at least one plunger drive (11) b) at least one tool carrier (3) for carrying at least one second forming tool (5), c) wherein the plunger and the tool carrier are movable relative to each other, such that the workpiece comes to rest between the forming tools, d) wherein in a tumbling operation of the device d1) as forming tools at least two wobble tools (4, 5) are provided, d2) a wobble carrier (9) is provided which is mounted in a swash bearing (8) and in at least one pivot coordinate, preferably in at least two pivot coordinates , is pivotable, d3) wherein at least a first of the wobble tools (4) on the plunger (10) is arranged and at least a second the wobble tools (5) is arranged on the wobble carrier (9), d5) and at least one wobble drive (30) for the wobble carrier (9) is provided with at least two drive units (31 to 34), each one opposite a fixed drive element (51 to 54), preferably linear, movable drive element (41 to 44) comprise, d6) wherein each one of the drive elements (41 to 44) of the drive units with the Taumelträger (9) in each case a coupling bearing, preferably releasably, mechanically coupled, e) and wherein in a pressing operation of the device e1) at least two pressing tools are provided as forming tools, e2) at least a first of the pressing tools on the plunger (10) is arranged and the tool carrier (3) carries a second of the pressing tools, e3) and the movable drive elements (41 to 44) of at least two, preferably all, drive units of the wobble drive in each case at least one contact surface (F1), which on the drive element selb or on a support bearing (44A) coupled to the drive element, for abutment with at least one corresponding abutment surface (F2) on the plunger itself or on a corresponding plunger attachment part (23, 24) or support part (23A, 24A, 24B) on Plunger (10) is provided, have.

Description

The invention relates to a device for forming workpieces.

For pressing workpieces in cold forming, especially in sheet metal forming, or hot forming, especially when forging metallic malleable materials, various forming machines (press machines) are known (see, for example, VDI Lexicon Volume Production Technology Process Engineering, published by: Hiersig, VDI-Verlag, 1995 , Pages 1107 to 1113). At least one ram with a first pressing tool of the pressing machine is driven by a drive and moved relative to a second pressing tool of the pressing machine, so that between the pressing tools, the workpiece can be deformed by pressing forces.

The usually weggebunden working mechanical presses use mechanical drives, such as servomotor drives, with a variety of translation mechanisms, such as eccentric (eccentric) or toggle (push-pull). The forming force or ram force is dependent on the path or the position of the plunger.

The normally force-operated hydraulic presses use a hydraulic drive by means of a hydraulic medium such as oil or water, whose pressure energy is converted by running in hydraulic cylinders piston into mechanical forming work. The ram force corresponds to the product of hydraulic pressure and piston area and is largely independent of the position of the plunger.

Furthermore, so-called wobble presses are known, which are used for tumbling workpieces.

The tumbling is a forming process, in particular cold forming process, in which always only partial areas of the workpiece are formed and thus the forming force also acts only on this portion of the workpiece. In this case, the workpiece between two tumbling tools (or: Taumelgesenken) is pressed, wherein one of the two tumbling tools is stationary and the other wobble tool is mounted centrally on a wobble carrier, which is pivotally mounted in a swash bearing. By means of a wobble drive, the wobble carrier is moved in a circular or wave-like tumbling motion at a certain angle of inclination about a wobble axis passing through the wobble bearing. In this case, similar to the rolling, successively only a small portion of the workpiece is formed and the workpiece flows gradually into the tumbling tools and takes on their shape. The wobbling tool, which performs the wobbling movement, can be arranged with its tumble carrier at the top and the fixed wobble tool below or vice versa.

The DE 100 17 462 A1 discloses a wobble press with a tool carrier which is pivotally mounted about a pivot point on a frame and with a plurality of linear displacement devices, in particular hydraulic or pneumatic piston-cylinder devices or spindle devices with associated spindle motors. The linear displacement devices are each connected via coupling joints with the carrier and the frame to pivot the carrier about the pivot point, so to put in the tumbling motion. The coupling joints are substantially equidistant from the pivot point for uniform force application. By a cyclical activation of the linear displacement device, the carrier executes the tumbling movement about the pivot point of the wobble press without additional compensating or sliding elements being provided.

The CH 685 105 A5 discloses a wobble press with hydraulic working piston as a wobble drive.

The DE 41 17 250 C2 discloses an adapter plate for a conventional axial press with a mounted in a press stand tool frame, which is divided according to the press-stroke direction in an upper and a lower tool part. The adapter plate is a tool with wobble head for wobble pressing and is exchangeable against component groups of the tool frame or additionally attachable in this. The adapter plate has a device for generating the wobbling movement of the wobble head and coupling elements for the connection of transmission devices, in particular oil pressure lines, via which it is connected to a located outside the axial press drive unit for the wobble head. In particular, the adapter plate together with the lower tool part forms a functional unit for wobble pressing. The device for generating the wobble movement comprises at least six, arranged at equal intervals about the tumble axis, with the tumble frequency phase-shifted working, hydraulic pressure cylinder and -stempel.

The DE 197 53 949 C2 discloses a flexible forming press with controllable non-linear plunger movement using a numerically controlled parallel kinematic drive, with a plurality, preferably six, attached to the press seat Actuators move a plunger in the working space on any guideline, which is achievable, forming processes characterized by axially parallel plunger movement, with forming methods, which are characterized by a tumbling plunger movement to combine flexible. The actuators can be designed as hydraulic cylinders or spindle drives and additionally have a length measuring device which returns the instantaneous length of the actuator to the connected controller.

The object of the invention is now to provide a new forming device for forming workpieces available.

This object is achieved by a forming device with the features of claim 1. Advantageous embodiments and further developments of the invention will become apparent from the dependent claims.

• a) wenigstens einen Stößel, an dem wenigstens ein Umformwerkzeug angeordnet ist und der von wenigstens einem Stößelantrieb antreibbar ist,
• b) wenigstens einen Werkzeugträger, an oder auf dem wenigstens ein weiteres Umformwerkzeug angeordnet ist,
• c) wobei der Stößel und der Werkzeugträger relativ zueinander bewegbar sind, derart, dass das Werkstück zur Umformung zwischen den Umformwerkzeugen zu liegen kommt,
• d) wobei in einem Taumelbetrieb der Vorrichtung
• d1) als Umformwerkzeuge wenigstens zwei Taumelwerkzeuge vorgesehen sind,
• d2) ein Taumelträger vorgesehen ist, der in einem Taumellager gelagert ist und in wenigstens einer Schwenkkoordinate, vorzugsweise in wenigstens zwei Schwenkkoordinaten, schwenkbar ist,
• d3) wobei wenigstens ein erstes der Taumelwerkzeuge am Stößel angeordnet ist und wenigstens ein zweites der Taumelwerkzeuge am Taumelträger angeordnet ist,
• d4) und wenigstens ein Taumelantrieb für den Taumelträger vorgesehen ist mit wenigstens zwei Antriebseinheiten, die jeweils ein gegenüber einem feststehenden Antriebselement, vorzugsweise linear, bewegliches Antriebselement umfassen,
• d5) wobei jeweils eines der Antriebselemente der Antriebseinheiten mit dem Taumelträger in jeweils einem Koppellager mechanisch gekoppelt ist,
• e) und wobei in einem Pressbetrieb der Vorrichtung
• e1) als Umformwerkzeuge wenigstens zwei Presswerkzeuge vorgesehen sind,
• e2) wenigstens ein erstes der Presswerkzeuge am Stößel angeordnet ist und wenigstens ein zweites der Presswerkzeuge am Werkzeugträger angeordnet ist,
• e3) die beweglichen Antriebselemente von wenigstens zwei, vorzugsweise allen, Antriebseinheiten des Taumelantriebs jeweils wenigstens eine Anlagefläche, die an dem Antriebselement selbst oder an einem mit dem Antriebselement gekoppelten Abstützlager vorgesehen ist, zur Anlage an wenigstens eine korrespondierende Anlagefläche, die am Stößel selbst oder an einem entsprechenden Stößelanlageteil oder Abstützteil am Stößel vorgesehen ist, aufweisen,
• e4) und (im Pressbetrieb) der Taumelträger (9) und das Taumellager (8) demontiert sind, der Taumelantrieb jedoch montiert ist oder bleibt.

The device for forming workpieces according to claim 1 comprises

• a) at least one plunger on which at least one forming tool is arranged and which is drivable by at least one plunger drive,
• b) at least one tool carrier is arranged on or on the at least one further forming tool,
• c) wherein the plunger and the tool carrier are movable relative to each other, such that the workpiece comes to rest for forming between the forming tools,
• d) wherein in a tumbling operation of the device
• d1) at least two wobble tools are provided as forming tools,
• d2) a wobble carrier is provided, which is mounted in a wobble bearing and is pivotable in at least one pivoting coordinate, preferably in at least two pivoting coordinates,
• d3) wherein at least a first of the wobble tools is arranged on the plunger and at least a second of the wobble tools is arranged on the wobble carrier,
• d4) and at least one wobble drive for the wobble carrier is provided with at least two drive units, each of which comprises a drive element, preferably a linearly movable drive element, relative to a stationary drive element,
• d5) wherein one of the drive elements of the drive units is mechanically coupled to the wobble carrier in each case in a coupling bearing,
• e) and wherein in a pressing operation of the device
• e1) at least two pressing tools are provided as forming tools,
• e2) at least a first of the pressing tools is arranged on the tappet and at least one second of the pressing tools is arranged on the tool carrier,
• e3) the movable drive elements of at least two, preferably all, drive units of the wobble drive in each case at least one contact surface, which is provided on the drive element itself or on a drive bearing coupled to the support bearing for abutment with at least one corresponding contact surface on the plunger itself or on a corresponding ram attachment part or support part is provided on the plunger,
• e4) and (in pressing operation) the wobble carrier ( 9 ) and the swash bearing ( 8th ) are disassembled, but the wobble drive is mounted or remains.

According to the invention, therefore, the drive elements of the (not disassembled) wobble drive an additional function in a pressing operation and are used for contact with a respective contact surface on the plunger or an associated part. As a result, the drive units of the wobble drive for supporting the plunger can be used in a pressing operation with pressing tools, in particular for supporting or stabilizing or damping the plunger in the pressing movement such. B. for horizontal or parallel holding the plunger or for cutting impact damping.

In a preferred embodiment, the abutment or support surface on each movable drive element is provided on a side facing away from the fixed drive element side, in particular at a free end of the movable drive element, in particular on a support bearing arranged on this side or this end. In a particular embodiment, each support bearing comprises a support ring, on which the abutment surface is formed, and an adjacent or adjacent bearing ring, which is mounted with an opposite spherical annular bearing surface on a corresponding spherical annular bearing surface of a ball ring and by means of a screw and possibly a support member is fastened or screwed in the threaded bore in the front end of the drive element. As a result, a small pivoting play is provided in the support of the plunger by the drive units, which is made possible by the two spherical bearing surfaces.

Further, in a further embodiment, a plurality of, preferably one of the number of support bearings corresponding number of support members are provided on the plunger. In particular, two support members may each be provided on each one of two ram attachment parts arranged on opposite sides of the ram and / or on the underside of the ram and / or in particular four, for example, at the vertices of a square arranged support parts.

Preferably, at least three, in particular four, drive units are provided. The drive units are in an advantageous embodiment, hydraulic drive units and their movable drive elements are compared to the fixed drive elements due to the hydraulic pressure of a hydraulic medium linearly movable or movable. The drive units may also be spindle drive units and their movable drive elements are compared to the fixed drive elements by means of at least one spindle drive linearly movable or movable. Preferably, in the pressing operation, in particular with punching and or cutting tools, with their associated contact surfaces on the corresponding the plunger associated contact surfaces adjacent movable drive elements for damping the plunger movement, in particular cutting impact damping, provided, this particular by damping in the hydraulic medium and / or by displacement of the hydraulic medium in the drive units can take place.

In an advantageous embodiment of the device, this comprises a control device which is in operative connection with the wobble drive and the plunger drive. The control device controls in tumbling the drive units of the wobble drive and the plunger drive so that on the one hand a tumbling motion of the wobble carrier is effected around the swash bearing and on the other hand the workpiece comes to rest on the wobble support for tumbling processing between the tumbling tool on the plunger and the tumbling tool , In the pressing operation, the control device controls the drive units of the wobble drive and the plunger drive so that the movable drive elements at least temporarily rest against the corresponding contact surfaces associated with the plunger during the pressing movement with their associated contact surfaces.

The control of the drive units of the wobble drive and the ram drive in the pressing operation can be such that in a variant, the movable drive elements during the pressing or working movement of the plunger by their at least temporarily on the corresponding contact surfaces associated with the plunger contact surfaces compensate for a possible inclination of the plunger or cause a horizontal or parallel position of the plunger or that in a further variant, a damping, in particular cutting shock damping, the movement of the plunger is effected.

Preferably, a displacement or position measuring device for the plunger is additionally provided, which is connected to the control device. The control device can now control the drive units of the wobble drive and of course the plunger drive depending on the measured path or the measured position of the plunger.

Furthermore, in one embodiment, the control device can hold the contact surfaces of all the drive units in a plane preferably moving downwards with the ram speed.

In one embodiment of the device is on the plunger, in particular on its free side, preferably underside, a tool carrier, in particular releasably secured, to which the at least one first forming tool can be arranged or arranged. In general, the device has a frame with a frame frame. The plunger is now preferably in at least two, preferably four, ram guides on the frame frame, preferably linear, guided and by means of the ram drive, preferably linear, relative to the frame frame in a working direction back and forth, preferably down and up, movable. Preferably, the plunger is located substantially within the frame frame. In the lower region of the frame frame, a base plate may be provided as a work platform on which persons and / or handling devices such as operating robots can be located and / or moved. The frame may further comprise at least two, in particular four, arranged below the frame frame and possibly the bottom plate frame feet, which are preferably used for damping.

The tool carrier, on or on which the at least one second forming tool can be arranged or arranged, is located in a preferred embodiment within the frame frame at a distance from the plunger, in particular below the plunger, and can also on a separate base, in particular by the bottom plate protrudes, be arranged.

In an advantageous embodiment, the drive units of the wobble drive, at least their fixed drive elements, are arranged as far as possible on the outside, on the one hand to keep the work area free and thus to allow their whereabouts in the pressing operation and on the other hand to larger moments or levers at the same linear deflection or vice versa To achieve moments with smaller deflection of the movable drive elements.

Accordingly, the drive units of the wobble drive, at least their fixed Drive elements, preferably outside of the tool carrier, on or on which the at least one second forming tool can be arranged or arranged, and / or arranged outside the frame frame or have a greater distance from each other than the corresponding outer dimensions of this tool carrier or the frame frame.

The fixed drive elements of the drive units of the wobble drive are preferably fastened to the frame, in particular to the frame frame, preferably on its outside or from outside. For this purpose, the fixed drive elements, preferably at one of their ends, preferably a lower end, in each case via a bearing joint bearing supports on the frame pivotally mounted and / or, preferably on each of the other of their ends, preferably an upper end, respectively a, for example, cage or part cage-like attachment unit to be fixed to the frame with a predetermined mobility, in particular in the fastening units each bushings are provided for passing an end of the fixed drive element or for performing the movable drive element optionally with interposed elastic compensation means.

However, the drive units are preferably arranged not only as far as possible outside with respect to the working area, but additionally or alternatively also as far as possible externally coupled to the Taumelträger to achieve the best possible lever or the largest possible moment when tumbling. The coupling bearings for the mechanical coupling of drive elements and Taumelträger are therefore preferably provided in edge regions or on the outside of the wobble carrier, in particular in corner regions of the wobble carrier, in particular if the wobble carrier angular, z. B. rectangular or square, is formed.

To form the coupling bearing and the coupling or attachment to the drive units, the wobble carrier preferably has attachment portions on which the movable drive elements are mounted on the coupling bearings, the wobble carrier in particular above and below each attachment portion has an incision, in each of which a spherical segment-like ball ring rests on the mounting portion each with a flat side, wherein on the side facing away from the mounting portion spherical bearing surface of the ball ring a complementarily shaped spherical bearing surface rests in each case a bearing ring. Conveniently, a central threaded bore is now provided at the front end of each movable drive element, in which a bolt with a bolt threaded part is screwed or screwed, wherein the bolt is preferably guided by central holes in the ball rings and in the mounting portion with play and in particular on a bearing ring with a bunch rests. It can also be provided a further bearing ring which rests on the front end of the movable drive member with a flat annular bearing surface and having a spherical bearing surface which rests on a complementary spherical bearing surface of a bearing member slidably mounted on the Taumelträger.

The described spherical bearing surfaces each allow a compensation of the resulting relative to tumbling relative movements between wobble carrier and drive elements and thus form components of a sufficiently flexible coupling bearing.

The swash bearing is generally mounted in a bearing plate which is fixed in tumbling operation on the tool carrier. The tool carrier on the plunger preferably has a holding device for the wobble operation in its central region for the at least one first wobble tool, wherein the wobble tool is preferably fastened to a flat holding cylinder, which in turn is fastened to the tool carrier via a holding plate. The at least one second wobble tool may also be held in a holding device, which is now mounted on the wobble carrier in a central region and preferably a, in particular hollow cylindrical, receiving part, within which the wobble tool is received, a holding cylinder, on which the receiving part is attached , and a, for example, square, holding plate, which is arranged between the holding cylinder and the wobble carrier comprises.

Preferably, the wobble carrier is plate-shaped and / or rectangular, preferably square.

In general, the wobble carrier is mounted centrally in the wobble bearing for wobbling or pivotable mounting of the wobble carrier in one or at least two pivoting coordinates with respect to a central pivot point on a wobble axis. The wobble axis runs centrally through the wobble carrier and the wobble bearing and preferably forms an intrinsic or principal axis of inertia of at least the wobble carrier.

The wobble bearing expediently comprises a spherical segment-like first wobble bearing part, which has a lower spherical wobble bearing surface, and a corresponding second wobble bearing part, in particular on the bearing plate, likewise with a spherical wobble bearing surface, which is complementary to the spherical wobble bearing surface on first swash bearing part is formed. The two spherical swash bearing surfaces are slidably mounted on each other during the tumbling motion.

The disassembly of the tumbling components except the wobble drive can be done for example by releasing the holding device, in particular its holding plate for the first wobbling tool from the associated tool carrier and by releasing the bearing plate from the associated tool carrier and by loosening the bolts from the drive elements.

The invention will be explained below with reference to exemplary embodiments. Reference is also made to the drawings, in whose

1 a forming machine with a tumbling unit in a perspective view,

2 the in 1 with a circle denoted by II marked section concerning the tumbling unit in an enlarged and partially sectioned perspective view,

3 in the 2 with a circle labeled III in an enlarged sectional view,

4 the forming machine according to 1 with removed wobble unit and use of the wobble drive to support the plunger for a pressing operation in a perspective view

5 the four drive units of the wobble drive with contact with the support units on the plunger considered in a perspective view and

6 this in 5 with a circle marked VI in a detailed enlarged view

are each shown schematically. Corresponding parts and sizes are in the 1 to 6 provided with the same reference numerals.

In all embodiments of the apparatus for forming workpieces 1 according to 1 to 6 this includes a pestle 10 to which an unspecified, e.g. B. hydraulic or mechanical ram drive unit 11 assigned to drive the plunger and to the usually at the bottom of an upper tool carrier 2 located, that of the plunger 10 is attached. The pestle 10 is front and rear laterally in two ram guides 21 and 22 on a rack 16 of the machine frame 13 guided and linear in a direction illustrated by a double arrow working direction back and forth, in the illustrated embodiment, down and up, movable. In the lower part of the frame 16 is a floor plate 14 arranged on which persons and / or handling devices such as operating robot, are located and / or can move. The frame 13 also includes four below the rack frame 16 and the bottom plate 14 arranged frame feet 15 which serve for damping.

Below the pestle 10 is inside the rack 16 a lower tool carrier 3 standing on a pedestal 12 of the frame 13 is fastened, by the bottom plate 14 protrudes and down on a not further designated soil, such as a production hall, is. The frame 13 is also preferred with the frame feet 15 or, in a non-illustrated embodiment, also directly to the frame frame 16 on this floor.

The upper tool carrier 2 and the lower tool carrier 3 have in a conventional manner mutually parallel grooves and holes for attaching different forming tools. The pestle 10 comes with the upper tool carrier 2 with the attached forming tool on the lower tool carrier 3 and moves the forming tool attached thereto and reshapes the workpiece between the two forming tools. After the forming process, the plunger moves 10 back up and the workpiece can be removed from the space between the forming tools. The workpiece is previously placed on the lower forming tool usually.

In the in 1 to 3 illustrated embodiment is the forming device 1 equipped for a tumbling operation or a tumbling of workpieces and includes a tumbling unit with a wobble carrier 9 in a swashbuckle 8th that in a bearing plate 18 is stored, is pivotally mounted, and a wobble drive.

In the in 4 to 6 illustrated embodiment is the forming device 1 equipped for a pressing operation or a pressing of workpieces and includes on the upper tool carrier 2 and the lower tool carrier 3 known pressing tools for a particular desired shape of the workpiece, but not shown. The tumble unit is disassembled except for the wobble drive.

On the frame 13 are stationary (or: fixed) drive elements 51 . 52 . 53 and 54 of drive units 31 . 32 . 33 and 34 attached to the wobble drive. The fixed drive elements 51 to 54 the drive units 31 to 34 are there preferably at their lower ends in each case via a bearing joint 101 to 104 on storage mounts 17 on the frame 13 pivotally mounted and at their upper ends via one, for example, cage or part cage-like attachment unit 91 to 94 , in the 5 is shown in one embodiment, on the frame 13 attached with a given mobility. Alternatively, an attachment of the stationary drive elements 51 to 54 at the base 12 possible.

Furthermore, each drive unit comprises 31 to 34 a movable drive element, in particular a drive piston, 41 to 44 which is relative to the fixed drive element, in particular a drive cylinder, 51 to 54 is mobile. For driving the movable drive element 41 to 44 opposite the immovable drive elements 51 to 54 can drive units 31 to 34 have a hydraulic drive or via a mechanical, in particular motor, drive, such as a spindle drive. The movement of the drive elements 41 to 44 relative to the drive elements 51 to 54 is with every drive unit 31 to 34 preferably linear or axial to one each by the drive elements 41 to 44 extending central axis B.

In the fastening units 91 to 94 are, in particular in each case the predetermined mobility enabling, executions 191A to 194A provided for performing either an annular upper end of the stationary drive element 91 to 94 or also of the movable drive element 41 to 44 , optionally with interposed elastic compensating means.

The upper tool carriers indicate the tumbling operation, as in 2 shown, in its central area a holding device 6 for the upper forming tool, which is in 2 an upper wobble tool 4 is that on a flat holding cylinder 61 attached, in turn, via a retaining plate 60 on the upper tool carrier 2 is attached. The lower forming tool, which in the example of 2 a lower wobble tool 5 is in a holding device 7 held on the tumble-bearer 9 fixed in a central area. The holding device 7 comprises a hollow cylindrical receiving part 72 , within which the bottom wobble tool 5 is included, a holding cylinder 71 on which the receiving part 72 is attached, and an example square plate 70 between the holding cylinder 71 and the swashbearer 9 is arranged. The tumbling carrier 9 is rectangular in the illustrated embodiment, preferably square, formed, but may also have a different shape.

By the described arrangement runs centrally an axis A, which serves as a wobble axis of the tumbling motion and preferably a self or main axis of inertia or a rotational axis of symmetry for the holding devices 6 and 7 and the swashbearer 9 as well as the swash bearing 8th forms.

The tumbling carrier 9 is central in the swashbuckle 8th stored for tumbling or pivoting storage of the tumble carrier 9 in two pivotal coordinates with respect to a central pivot point on the wobble axis A. The wobble bearing 8th preferably comprises a rotationally symmetrical to the wobble axis A or an axis standing in a pivoting angle formed during the wobbling motion spherical segment-like first wobble bearing part 80 , which is a lower spherical swash bearing surface 82 and a corresponding second wobble bearing part 81 on the bearing plate 18 , which second swash bearing part 81 also a spherical swash bearing surface 83 which is complementary to the spherical swash bearing surface 82 at the first swash bearing part 80 is trained. The two spherical swash bearing surfaces 82 and 83 are slidably supported during the tumbling motion. The bearing plate 18 is about the grooves provided for tool attachment and Schraubbohrungen the lower tool carrier 3 attached to this.

At the four corners of the square tumbler 9 are four attachment sections 90 provided on which the movable drive elements 41 to 44 the drive units 31 to 34 the wobble drive are mounted with a certain swing tolerance. The tumbling carrier 9 points to above and below each attachment section 90 an incision, in each of which a spherical segment-like ball ring 92A below and 92B on top of the mounting sections 90 each with a flat side rest. On the from the attachment section 90 facing away from spherical bearing surface 94A of the ball ring 92A and 94B of the ball ring 92B is a complementarily formed spherical bearing surface 93A respectively. 93B a bearing ring 91A respectively. 91B on. On the upper bearing ring 91B again lies a collar of a bolt 95 on.

At the upper front end of the movable drive element 44 and also the other drive elements 41 to 43 is each frontally a central threaded hole 55 , In particular a threaded blind hole, provided in the bolt 95 with a bolt thread part 105 screwed or screwed.

To the bearing rings 91A and 92A such as 92B and 91B and the attachment section 90 has the respectively through central openings or holes in these guided bolt 95 on the other hand, a game on, through a gap 56 is formed. Below of the lower bearing ring 91A is another bearing ring 97 provided on the front-side upper end of the movable drive element 44 rests with a flat annular bearing surface. Outside, the bearing ring 97 a spherical bearing surface 98 on top of a complementary spherical bearing surface 99 a storage part 96 sliding rests, which bearing part 96 again on the inside of the swashbearer 9 is attached.

About the different spherical bearing surfaces 93A and 94A such as 93B such as 94B such as 98 and 99 , which is a coupling bearing for the mechanical coupling of drive elements 41 to 44 to the swashbearer 9 form and adapted to the respective radii allow a same pivotal movement, is the movable drive element 44 with a certain swing tolerance or a swivel play on the tumble carrier 9 fastened, allowing the tumbling motion of the tumbler 9 in the deviation from the linear movement of the drive units can be compensated. In a horizontal position of the tumbler 9 in which the tumbling carrier 9 directed perpendicular to the central axis of wobble A, are also the central axes B, shown in FIG 3 , the drive units 34 parallel to each other and to the central tumble axis A.

The arrangement or coupling of the drive units 31 to 34 of the wobble drive 30 at the corners of the bearer 9 allows larger moments or levers with the same linear deflection or vice versa same moments with smaller deflection of the movable drive elements 41 to 44 ,

The intended for the tumble operation components of the 1 and 2 shown tumbling unit with the exception of the wobble drive are by loosening the holding device 6 , in particular its retaining plate 60 , from the upper tool carrier 2 , and by loosening the bearing plate 18 from the lower tool carrier 3 as well as by loosening the bolts 95 from the drive elements 41 to 44 from the forming machine or device 1 removable or removable and replaceable by "normal" pressing tools for a pressing operation.

The drive units 31 to 34 stay against it on the frame 13 attached and will not be dismantled. This arrangement of the drive units 31 to 34 the wobble drive outside the outer dimensions of the plunger 10 and thus the working area of the forming machine 1 on the frame 13 has the advantage of greater freedom of construction and that during disassembly or assembly of the wobble components 6 to 9 no hydraulic or electrical connections need to be interrupted or restored.

In pressing operation now the drive units 31 to 34 used according to the invention for a further function, namely for supporting or stabilizing or damping the plunger 10 the forming machine 1 , The movable drive elements 41 to 44 To do this with respective contact surfaces against corresponding contact surfaces on the plunger 10 or on the pestle 10 provided ram attachment parts 23 and 24 driven and brought into contact with these for partial support. In this case, a bearing or support surface F1 is supported on a support part 41A to 44A at the upper end of the drive element 41 to 44 from below to a corresponding bearing or support surface F2 at one of four arranged at the vertices of a square support parts 23A and 23B or 24A and 24B at the two ram attachment parts 23 and 24 off, as in 4 to 6 shown.

According to 6 is the support surface F1 on an upper support bearing 44A formed, which has an upper support ring 44E , on the upper side of which the surface F1 is, and an underlying bearing ring 44D having, wherein the bearing ring 44D with a bottom spherical bearing surface 47 on a corresponding spherical annular bearing surface 46 a ball ring 44B is stored and by means of a screw (or: bolt) 45 and a pad part 44C in the hole 55 in the upper end of the drive element 44 is attached. This supports with a small pivoting play that through the bearing surfaces 46 and 47 allows the drive element 44 the drive unit 34 the pestle 10 at this point, as well as the other drive elements 41 to 43 the drive units 31 to 33 at their respective places.

By a corresponding control of the drive units depending on, for example by means of a position or displacement measuring device 111 and 112 , Measured, plunger position by means of a control device, not shown, can now the plunger 10 at a certain time from its drive units down during its working movement 31 to 34 be supported and held in a direction orthogonal to its movement horizontal position during the movement downwards (so-called. Parallel holding the plunger 10 ). In this case, the bearing surfaces of all four drive units are preferably regulated in a plane that moves downwards with the plunger speed, wherein the drive units 31 to 34 occurring tilting moments from shocks 10 intercept or compensate or counterbalance.

The shown attachment or support of the plunger 10 through the drive elements 31 to 34 can also be used to dampen impact or jerky movements of the plunger 10 be used for example a cut. The drive elements dampen 31 to 34 the blow of the resting pestle 10 for example, by displacement of hydraulic medium by means of open valves or pressure relief valves.

LIST OF REFERENCE NUMBERS

1

contraption

2

upper tool carrier

3

lower tool carrier

4

Upper tumbling tool

5

lower wobble tool

6

holder

7

holder

8th

wobble bearing

9

wobble carrier

10

tappet

11

Ram drive unit

12

baseplate

13

frame

14

baseplate

15

stand feet

16

rack

17

bearing support

18

bearing plate

21, 22

tappet guide

23, 24

Pestle plant components

23A, 23B

supporting part

24A, 24B

supporting part

25

screw

30

wobble drive

31 to 34

drive unit

41 to 44

movable drive elements

44A

support bearing

44B

ball ring

44C

underlay part

44D

bearing ring

44E

support ring

44F

elastic ring

45

screw

46, 47

spherical bearing surface

51 to 54

fixed drive elements

55

drilling

56

gap

60

stop plate

61

holding cylinder

70

stop plate

71

holding cylinder

72

receiving part

80

Swash bearing part

81

Swash bearing part

82, 83

spherical swash bearing surface

90

attachment section

91 to 94

fixing unit

91A, 91B

bearing ring

92A, 92B

ball ring

93A, 93B

spherical bearing surface

94A, 94B

spherical bearing surface

95

bolts

96

bearing part

97

bearing ring

98, 99

spherical bearing surface

101 to 104

bearing joint

105

Bolt thread part

111, 112

displacement measuring system

191A to 194A

execution

A

wobble axis

B

Axis of the drive unit

W

workpiece

F1, F2

contact surface

Claims (10)

Device for forming workpieces comprising a) at least one ram ( 10 ), on which at least a first forming tool ( 4 ), preferably by means of a tool carrier ( 2 ), and that of at least one ram drive ( 11 ), b) at least one tool carrier ( 3 ) for carrying at least one second forming tool ( 5 ), c) wherein the plunger and the tool carrier are movable relative to each other, such that the workpiece comes to rest for forming between the forming tools, d) wherein in a tumbling operation of the device d1) as forming tools at least two wobble tools ( 4 . 5 ), d2) a wobble carrier ( 9 ) provided in a swash bearing ( 8th ) and in at least one pivoting coordinate, preferably in at least two pivoting coordinates, is pivotable, d3) wherein at least a first of the tumbling tools ( 4 ) on the plunger ( 10 ) and at least a second of the tumbling tools ( 5 ) on the wobble carrier ( 9 ), d4) and at least one wobble drive ( 30 ) for the tumbling carrier ( 9 ) is provided with at least two drive units ( 31 to 34 ), each one opposite a fixed drive element ( 51 to 54 ), preferably linear, movable drive element ( 41 to 44 ), d5) in each case one of the drive elements ( 41 to 44 ) of the drive units with the wobble carrier ( 9 ) in each case a coupling bearing, preferably detachably, mechanically coupled, e) and wherein in a pressing operation of the device e1) as forming tools at least two pressing tools are provided, e2) at least a first of the pressing tools on the plunger ( 10 ) is arranged and the tool carrier ( 3 ) carries a second of the pressing tools, e3) the movable drive elements ( 41 to 44 ) of at least two, preferably all, drive units of the wobble drive in each case at least one contact surface (F1) which is coupled to the drive element itself or to a drive element coupled to the Support bearing ( 44A ) is provided for abutment with at least one corresponding contact surface (F2), which on the plunger itself or on a corresponding ram attachment part ( 23 . 24 ) or supporting part ( 23A . 24A . 24B ) on the plunger ( 10 ), e4) and the wobble carrier ( 9 ) and the swash bearing ( 8th ) are disassembled, but the wobble drive is mounted or remains. Device according to claim 1 comprising at least one or any combination of the following features: a) the abutment surface (F1) on each movable drive element ( 41 to 44 ) is at one of the fixed drive element ( 51 to 54 ) facing away from the movable drive element, in particular at a free end, in particular at a arranged on this side or this end support bearing ( 41A to 44A ), b) each support bearing ( 44A ) comprises a support ring ( 44E ), on which the contact surface (F1) is formed, and an adjacent bearing ring ( 44D ) provided with an opposing spherical annular bearing surface ( 47 ) on a corresponding spherical annular bearing surface ( 46 ) of a ball ring ( 44B ) and by means of a screw ( 45 ) and possibly a supporting part ( 44C ) in the threaded hole ( 55 ) in the front end of the drive element ( 44 ), c) there are several, preferably one of the number of support bearings corresponding number of support parts ( 23A . 23B . 24A . 24B ) on the plunger ( 10 ), in particular in each case two support parts on each one of two on opposite sides of the plunger ( 10 ) and / or at the bottom of the plunger ( 10 ) arranged ram attachment parts ( 23 . 24 ) and / or in particular four, for example, at the vertices of a square arranged supporting parts. Apparatus according to claim 1 or claim 2, wherein in the pressing operation with their contact surfaces on the corresponding contact surfaces on the plunger movable drive elements for horizontal or parallel attitude or tilt-free attitude and / or to decelerate the plunger during the working movement of the pressing tools to serve each other, wherein Especially in a horizontal position of the plunger, the central axes (B) of the drive units are parallel to each other. Device according to one of the preceding claims with at least one or any combination of the following features: a) there are at least three, in particular four, drive units ( 31 to 34 c) the drive units are spindle drive units and their movable drive elements are opposite to the fixed drive elements by means of at least one spindle drive linearly movable or movable. Device according to one of the preceding claims, in which in the pressing operation, in particular with punching and cutting tools, with their associated contact surfaces on the corresponding contact surfaces associated with the plunger bearing movable drive elements for damping the plunger movement, in particular cutting impact damping serve, in particular by damping in the hydraulic medium and / or by displacement of the hydraulic medium in the drive units. Device according to one of the preceding claims, with a) a control device which is in operative connection with the wobble drive and the plunger drive, b) wherein the control means in tumbling the drive units of the wobble drive and the plunger drive so controls that a wobbling motion of the wobble carrier is effected to the swash bearing and that the workpiece comes to rest on the wobble carrier for tumbling processing between the tumbling tool on the plunger and the tumbling tool , and c) wherein the control means in the pressing operation drives the drive units of the wobble drive and the plunger drive so that the movable drive elements at least temporarily bear against the corresponding contact surfaces associated with the plunger during the pressing movement with their associated contact surfaces. Apparatus according to claim 6, wherein a) the control device in the pressing operation drives the drive units of the wobble drive and the plunger drive so that the movable drive elements during the pressing movement at least temporarily abut with their associated contact surfaces of the corresponding contact surfaces associated with the plunger and thereby a possible inclination compensate the plunger or cause a horizontal or parallel position of the plunger and / or b) in which the control device in the pressing operation, the drive units of the wobble drive and the plunger drive so controls that the movable drive elements during the pressing movement at least temporarily with their associated contact surfaces of the corresponding abut the plunger associated contact surfaces and thereby an attenuation, in particular cutting impact damping, effecting the movement of the plunger and / or c) in which a displacement or position measuring device ( 111 . 112 ) is provided for the ram, which is connected to the control device, and in which the control device, depending on the measured path or the measured position of the plunger drives the drive units and / or d) in which the control device, the contact surfaces of all drive units in a, preferably with the ram speed down, holding level. Device according to one of the preceding claims with at least one or any combination of the following features: a) on the plunger ( 10 ), in particular on its free side, preferably lower side, is a tool carrier ( 2 ), in particular detachably, to which the at least one first forming tool can be arranged or arranged, b) the device has a frame ( 13 ) with a rack ( 16 ), c) the plunger ( 10 ) is in at least two, preferably four, ram guides ( 21 . 22 ) on the frame ( 16 ), preferably linearly guided and by means of the ram drive ( 11 ), preferably linear, relative to the frame ( 16 ) in one working direction, preferably downwards and upwards, movable, d) in the lower region of the frame ( 16 ) is a bottom plate ( 14 ), on which persons and / or handling devices, such as operating robots, can be located and / or moved, e) the frame ( 13 ) further comprises at least two, in particular four, below the rack frame ( 16 ) and the bottom plate ( 14 ) arranged frame feet ( 15 ), which are preferably used for damping, f) the tool carrier ( 2 ), on or on which the at least one second forming tool can be arranged or arranged, is located within the frame frame (FIG. 16 ) at a distance from the plunger ( 10 ), in particular below the plunger ( 10 ), and / or on a pedestal ( 12 ), in particular by the bottom plate ( 14 ), g) the drive units ( 31 to 34 ) of the wobble drive ( 30 ), at least their fixed drive elements ( 51 to 54 ), are outside the toolholder ( 2 ), or on which the at least one second forming tool can be arranged or arranged, arranged or have a greater distance from each other than the corresponding outer dimensions of the tool carrier ( 2 ), on or on which the at least one second forming tool can be arranged or arranged, h) the drive units ( 31 to 34 ) of the wobble drive ( 30 ), at least their fixed drive elements ( 51 to 54 ), are outside the rack ( 16 ) or have a greater distance from each other than the corresponding outer dimensions of the frame frame ( 16 ), i) the fixed drive elements ( 51 to 54 ) of the drive units ( 31 to 34 ) of the wobble drive ( 30 ) are on the frame ( 13 ), in particular on the frame ( 16 ), preferably on its outside or on the outside, j) the fixed drive elements ( 51 to 54 ) of the drive units ( 31 to 34 ) are, preferably at one of its ends, preferably a lower end, each via a bearing joint ( 101 to 104 ) to storage mounts ( 17 ) on the frame ( 13 ) and / or, preferably, in each case at the other of their ends, preferably an upper end, via in each case one, for example cage or part cage-like fastening unit ( 91 to 94 ) on the frame ( 13 ) fixed with a predetermined mobility, in particular in the fastening units ( 91 to 94 ) each implementation ( 191A to 194A ) are provided for passing through an end of the fixed drive element ( 91 to 94 ) or for carrying out the movable drive element ( 41 to 44 ) optionally with interposed elastic compensating means, Device according to one of the preceding claims with at least one or any combination of the following features: a) the swash bearing ( 8th ) is in a bearing plate ( 18 ), which in tumbling operation on the tool carrier ( 3 ), b) the tool carrier ( 2 ) on the plunger ( 10 ) has for the tumbling operation in its central area a holding device ( 6 ) for the at least one first tumbling tool ( 4 ), wherein the wobble tool ( 4 ) preferably on a flat holding cylinder ( 61 ), which in turn via a retaining plate ( 60 ) on the tool carrier ( 2 ), c) the at least one second tumbling tool ( 5 ) is in a holding device ( 7 ) held on the tumbling support ( 9 ) is fastened in a central region and the preferably one, in particular hollow cylindrical, receiving part ( 72 ) within which the tumbling tool ( 5 ), a holding cylinder ( 71 ), on which the receiving part ( 72 ), and a, for example, square, holding plate ( 70 ), which between the holding cylinder ( 71 ) and the tumbling carrier ( 9 ), d) the wobble carrier ( 9 ) is plate-shaped and / or rectangular, preferably square, formed e) the tumble ( 9 ) is centrally located in the swashbuckle ( 8th ) stored for wobbling or pivoting storage of the tumbling carrier ( 9 ) in one or at least two pivoting coordinates with respect to a central pivot point on a wobble axis (A), which by the wobble carrier ( 9 ) and the swash bearing ( 8th ) and preferably forms an intrinsic or principal axis of inertia, f) the swash bearing ( 8th ) comprises a spherical segment-like first wobble bearing part ( 80 ) having a lower spherical swash bearing surface ( 82 ), and a corresponding second wobble bearing part ( 81 ), in particular on the bearing plate ( 18 ), which second swash plate part ( 81 ) also has a spherical wobble bearing surface ( 83 ) which is complementary to the spherical swash bearing surface ( 82 ) on the first wobble bearing part ( 80 ), wherein the two spherical swash bearing surfaces ( 82 . 83 ) are mounted slidingly on one another during the wobbling movement, g) the coupling bearings for the mechanical coupling of drive elements ( 41 to 44 ) and tumbling supports ( 9 ) are in marginal areas or on the outside of the tumbling ( 9 ), in particular in corner regions of the wobble carrier ( 9 ), h) the tumbling carrier ( 9 ) has fastening sections ( 90 ) on which the movable drive elements ( 41 to 44 ) are mounted over the coupling bearings, i) the wobble carrier ( 9 ) has above and below each attachment portion ( 90 ) an incision, in each of which a spherical segment-like ball ring ( 92A . 92B ) on the attachment section ( 90 ) each with a flat side rests, wherein on the from the mounting portion ( 90 ) facing away from spherical bearing surface ( 94A . 94B ) of the ball ring ( 92A . 92B ) a complementarily formed spherical bearing surface ( 93A . 93B ) of a bearing ring ( 91A . 91B ) rests, j) at the front end of each movable drive element ( 41 to 44 ) is in each case a central threaded hole ( 55 ), in which a bolt ( 95 ) with a bolt thread part ( 105 ) is screwed or screwed, wherein the bolt ( 95 ) is preferably guided through central holes in the ball rings and in the attachment portion with play and in particular on a bearing ring ( 91B ) rests with a collar, k) it is another bearing ring ( 97 ) provided on the front end of the movable drive element ( 44 ) rests with a flat annular bearing surface and a spherical bearing surface ( 98 ) mounted on a complementary spherical bearing surface ( 99 ) of a storage part ( 96 ) slidably resting on the wobble carrier ( 9 ) is attached. Device according to one of the preceding claims, wherein the disassembly by releasing the holding device ( 6 ), in particular its retaining plate ( 60 ) from the tool carrier ( 2 ) and by loosening the bearing plate ( 18 ) from the associated tool carrier ( 3 ) as well as by loosening the bolts ( 95 ) from the drive elements ( 41 to 44 ) he follows.

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