EP1631401A1 - Verfahren und vorrichtung zum umformen eines werkstücks mit automatischer handhabung - Google Patents
Verfahren und vorrichtung zum umformen eines werkstücks mit automatischer handhabungInfo
- Publication number
- EP1631401A1 EP1631401A1 EP04735197A EP04735197A EP1631401A1 EP 1631401 A1 EP1631401 A1 EP 1631401A1 EP 04735197 A EP04735197 A EP 04735197A EP 04735197 A EP04735197 A EP 04735197A EP 1631401 A1 EP1631401 A1 EP 1631401A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- handling
- forming
- handling devices
- devices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/10—Manipulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
Definitions
- the invention relates to a ner driving and a Norcardi for forming a workpiece.
- Striking metal forming machines include a work area in which two tools, generally rectilinear, are movable relative to one another. The workpiece is arranged between the two tools and is then shaped by the impact force or impact energy when the tools strike the workpiece and the resulting forming energy.
- the drives for the bears of forging hammers are generally hydraulic or pneumatic. During the actual forming or working process, the hammer frame and the hammer drives of a forging hammer are relieved of the forming force, so that forging hammers cannot be overloaded.
- the moving tool is usually called ram.
- the plunger is moved in a straight line to the stationary tool by a spindle.
- the spindle and thus the plunger are driven by a drive motor and / or a flywheel as an energy store (VDI lexicon op. Cit.)
- the forming pressure force and the forming temperature depend on the material from which the workpiece is made, as well as on the requirements for dimensional accuracy and surface quality.
- Forgeable materials are basically all kneadable metals and metal alloys, and both ferrous materials such as steels and non-ferrous metals such as magnesium, aluminum, titanium, copper, nickel and alloys made from them.
- the temperatures that occur during forging can be between room temperature in a so-called cold forming process, between 550 ° C and 750 ° C in a semi-hot forming process and above 900 ° C in a so-called hot forming process.
- the forming temperature is usually also set in a temperature range in which the formability or flowability of the material required for forming is present, and recovery and recrystallization processes can take place in the material and undesirable phase transformations are also avoided.
- a problem with the use of such handling devices is the high impact forces in a striking metal forming machine, which can significantly strain and damage the handling device during the forming blow if the handling device holds the workpiece when the bear or ram hits.
- DE 42 20 796 AI and DE 100 60 709 A1 handling devices have been proposed, which can be made flexible during the blow to dampen the shock and vibration transmitted by the workpiece towards the drive and which are set rigidly during the transport of the workpiece.
- a handling device for holding a forged part during the forging process in which a running gear carries a gripper device via a cuff, which has a clamp that detects the forged part during the forging process.
- the cuff can optionally be brought hydraulically into a compliant state and a rigid state.
- a handling device designed as a manipulator or as a robot for handling a forged part during the forging process with a gripping tongs and a gripping arm carrying the gripping tongs, which is connected to an arm area via a flexible block piece made of an elastically deformable material can be swiveled up and down by means of a first electric motor and raised and lowered by means of a second electric motor. These two movements of the arm area are synchronized by a control device. Due to the flexibility of the block piece, the front area of the gripper with the gripper arm and the gripping tongs can be pivoted as a kind of joint relative to the rear area with the arm area and the drive motors in the block piece.
- the gripper now places a forging workpiece on a die of a forging hammer and the hammer strikes the workpiece from above, vibrations or shocks generated in the elastic block piece can be dampened and intercepted, so that the drives are relieved.
- the elastic block piece is bridged by means of a rigid actuating rod, which creates a rigid connection between the gripper arm and the arm area over the block piece. The rigid part is fixed when the front gripper arm and rear arm area are parallel and can be released when the tool is resting Piece on the die of the forging hammer by lifting the rear arm area.
- the forged parts may have considerable deviations in their shape due to manufacturing or processing tolerances in previous shaping or forming steps, in particular also at the ends that are handled by the handling devices , Therefore, when gripping with the known automatic gripping devices, there can be considerable deviations in the position of the forged part relative to the handling device and thus also relative to the tool of the forming machine, which can result in high rejects and in extreme cases even damage to the tools.
- the position of the workpiece in the tool of the forming machine could now be detected, for example, by image recognition and the handling device could be controlled accordingly in order to correct a deviation of the position of the workpiece relative to the tool from a target position.
- image recognition the handling device could be controlled accordingly in order to correct a deviation of the position of the workpiece relative to the tool from a target position.
- the invention is based on the object of at least partially reducing or completely avoiding the aforementioned problems in the prior art.
- the method according to claim 1 is suitable and intended for forming, in particular forging, at least one workpiece and comprises the following method steps: a) positioning the workpiece in a predetermined or predeterminable forming position in at least one working area of a, in particular striking, forming machine between two tools of the forming machine (Positioning step), b) movement of the tools of the forming machine relative to one another and forming of the workpiece between the tools during at least one forming step, c) holding the workpiece in its forming position by at least two handling devices during each forming step, and thus also during the impact of the tool or tools on the workpiece, d) automatic and coordinated control or regulation of the movements and positions of the at least two handling devices by at least one control device.
- the apparatus according to claim 40 is suitable and intended for forming at least one workpiece and in particular for use in a method according to the invention or for carrying out a method according to the invention and comprises a) at least one, in particular striking, forming machine with at least two tools which can be moved relative to one another for the forming a workpiece in a predetermined or predefinable forming position during at least one forming step, b) at least two handling devices for holding the workpiece in the forming position during the forming step, c) at least one control device for controlling or regulating the movements and positions of the handling devices.
- the movement of the tools in the forming machine relative to one another naturally includes both the case in which only one of the two tools moves relative to the ground or machine frame or another external reference system and the other remains stationary with this external system, for example with a pressure hammer or one Drop hammer or a screw press, as well as the case that both tools move relative to the external reference system, for example with a counterblow hammer.
- the forming position of the workpiece refers to its absolute and adjustable geometrical position in space with respect to an external coordinate system.
- a change in the deformed position is generally composed of translational and / or rotational changes in position or movements, ie the workpiece can be moved and / or rotated.
- the working area of the forming machine is the area between the tools in which the actual forming takes place. Several working areas can also be formed between two tools, which can be defined, for example, by different engravings in one die.
- the movement takes place according to a predefined or predeterminable movement sequence or movement profile or a correspondingly stored control program (no feedback "open-loop control"), while when regulating the movements of the handling devices are measured and at predetermined target movements (reference variables of the movement ) can be adjusted or regulated (feedback, "closed-loop-control").
- the invention is based on the consideration of holding or gripping the workpiece at least two points in each case with a handling device during the forming step, at least during the impact of the tool (s), in particular striking tools (s).
- this has the advantage that the workpiece is fixed in two places when the tool (s) strikes and can thus be more securely prevented from jumping or slipping in the tools.
- Another advantage is that kinking of a longer workpiece on one side can be prevented, since the handling devices can fix the workpiece on both sides and stabilize it during forming.
- a particular advantage of the invention is the possibility of compensating for a deviation in the position of the workpiece relative to the tools as a result of a corresponding deviation in the shape of a workpiece in an area in which a first one of the handling devices acts. This is accomplished by gripping and holding the workpiece in a second area by means of the second handling device. The workpiece is brought into a kind of middle position between the two handling devices by the measures according to the invention, while when gripped with only one handling device, as with the handling devices in the prior art, it is shifted or rotated due to the tolerances.
- the kinematic coupling of the handling devices can be achieved mechanically, but is preferably implemented electronically or in terms of control technology by coupling the control of their drive systems.
- the handling devices can also carry out further manipulations, in particular one or more of the following manipulations:
- the two handling devices are moved synchronously and / or along trajectories which are essentially constantly spaced from one another and / or at substantially the same speed
- the control device controls or regulates the two handling devices, in particular their respective drive devices, in one embodiment. form according to a master-slave control principle, wherein a handling device serving as a slave follows a handling device serving as a master in the movements.
- control device controls the two handling devices, in particular their respective drive devices, independently of one another, with respective mutually adapted control processes.
- each handling device or its point of application on the workpiece travels during a movement and / or handling of the workpiece along a previously determined trajectory at a predetermined speed profile and / or follows stored successive trajectory points at regular time intervals.
- the associated trajectory of the handling device or its point of attack on the workpiece is preferably learned in advance, but can also be calculated or simulated.
- the trajectory of one of the at least two handling devices or its point of application on the workpiece is (only) taught in and the trajectory of the at least one further handling device or its point of application on the workpiece is calculated in advance from the taught-in trajectory of the first handling device and stored or in Calculated in real time.
- the associated trajectory is generally traversed and the trajectory points are recorded and stored in succession at regular intervals.
- the speed course during teaching is preferably predetermined in accordance with the later speed course during the process. With any speed curve during teaching, the actual speed curve during operation can also be taken into account later and new trajectory points can be calculated and saved.
- the handling device or its point of attack on the workpiece when moving and / or handling the The workpiece always follows the trajectory points saved during teach-in, if necessary after speed correction, at the same time intervals and in the same order as during teach-in.
- the two handling devices are preferably located on opposite sides of the working area or the tools of the shaping machine. Furthermore, the handling devices can preferably also be moved into a parking position in order to make the working area (s) of the forming machine (s) accessible
- each handling device has a) at least one gripping device with at least two gripping elements that can be moved relative to one another for gripping the workpiece, b) at least one carrier device to which the gripping device can be fastened or fastened, and c) at least one transport device for transporting the carrier device with the gripping device.
- the device is now preferably further developed in that a flexible connection between the carrier device and the transport device in a flexible state at least partially absorbs shocks or vibrations that are transferred from the workpiece in the forming machine to the handling devices during the forming process, and thus protects the transport device from these mechanical loads and that a rigid connection or position of the carrier device and the transport device in a rigid state, on the other hand, is used when handling the workpiece during transport or when turning or pivoting before or after forming steps.
- a preferred application of the invention is with a forging hammer or a screw press as a forming machine.
- FIG. 2 shows the device according to FIG. 1, in which the two handling devices hold the workpiece placed in a forming machine, in a side view,
- FIG. 3 shows a cross section through one of the handling devices according to FIG. 1 in the sectional plane designated III-III and
- FIG. 4 shows a section according to FIG. 3 with the gripping device or actuating device pivoted
- FIG. 5 shows the device according to FIG. 1 or FIG. 2, in which the two handling devices release the workpiece located in the forming machine after the forming blow, in a side view,
- FIG. 6 shows a device for shaping a workpiece with two handling devices, which handle the workpiece along predetermined movement paths, in a schematic perspective view
- FIG. 7 shows a device for forming a workpiece with two handling devices when handling the workpiece in a plan view
- FIG. 8 shows a device for reshaping a workpiece with two handling devices in the park position in a plan view
- FIGS. 1 to 8 are each shown schematically. Corresponding sizes and parts are provided with corresponding reference numerals in FIGS. 1 to 8.
- a first handling device is designated by 2 and a second handling device by 2 '.
- Each of the handling devices 2 and 2 ' can be designed as a manipulator or robot.
- the two handling devices 2 and 2 ' are of essentially identical construction and each comprise a gripping device (or: gripping tongs) 3 or 3', a carrier shaft 4 or 4 ', a supporting device (or: Rigid position device) 5 or 5 ', a bearing part 6 or 6', a flexible element 7 or 7 ', a swivel drive (or: rotary drive) 8 or 8', a joint 9 or 9 ', an actuating device 11 or 11 'and a transport device 16 or 16'.
- Each gripping device 3 or 3 ' comprises two gripping levers 32 and 33 or 32' and 33 ', respectively, which have an associated gripping jaw (or: gripping element, pliers jaw) 30 or 31 or 30' and 31 ', which are operated by means of the actuating device 11 or 11 'can be pivoted relative to one another about a pivot axis E or E' in a pivot bearing 34 or 34 'for opening and closing the gripping device 3 or 3'.
- the actuating device 11 or 11 ' engages in an engagement bearing 35 or 35' on the gripping lever 33 or 33 'and can be pivoted about a pivot axis D or D' in a pivot bearing 14 or 14 'on a holding part 61 or 61 'of the bearing part 6 or 6' stored
- the gripping lever 32 or 32 'of the gripping device 3 or 3' is connected via the carrier shaft 4 or 4 'to an intermediate part 60 or 60' of the bearing part 6 or 6 'coaxially along an axis M.
- the flexible element 7 or 7' is arranged, which and each have a flange 67 and 87 or 67 'and 87' is connected to the intermediate part 60 or 60 'and the swivel drive 8 or 8' and consists of an elastic material, preferably an elastomer.
- the flexible element 7 or 7 ' are now the front unit of the handling device 2 or 2', namely the gripping device 3 or 3 ', the carrier shaft 4 or 4' and the bearing part 6 or 6 'and the B Actuation device 11 or 11 ', on the one hand, and the rear unit of the handling device 2 or 2', namely the swivel drive 8 or 8 'and the joint 9 or 9' and the transport device 16 or 16 ', and thus also their Axes M and N can be pivoted to each other.
- FIG. 3 and 4 show a sectional view through the lifting cylinder of the actuating device 11 and the carrier shaft 4 and the support device 50 of the handling device 2 according to FIG. 1, an exemplary embodiment for a pivoting movement.
- FIG 3 shows a vertical position, in which a central axis B of the supporting part 50 of the supporting device 5 and a central axis C of the actuating device 11 and the bearing part 6 coincide, the actuating device 11 is thus seen in the direction of gravity G above the intermediate part 60 of the bearing part 6.
- the front unit of the handling device 2 is now pivoted or rotated clockwise by a pivot angle ⁇ to the right.
- the carrier shaft 4 rotates about the axis of rotation R in its support bearing 54 of the support device 5.
- the central axis C of the front unit, in particular of the bearing part 6 and the actuating device 11, and thus also the gripping device 3 are now by the pivot angle ⁇ relative to the Center axis B of the support device 5 is pivoted.
- a workpiece 10 can thus be rotated by the corresponding swivel angle ⁇ .
- the support device 5 or 5 'of the handling devices 2 and 2' comprises a longitudinal connecting rod 53 or 53 ', on which a first fastening part 51 or 51' running transversely upwards for connecting the connecting rod 53 or 53 'with the swivel drive 8 or 8' and further to the rear a transversely upward second fastening part 52 or 52 'for connecting the connecting rod 53 or 53' to the joint 9 or 9 'and in the front region a transverse to the connecting rod 53 or 53 'upwardly projecting support part 50 or 50' for fixing or supporting the support shaft 4 or 4 'are arranged.
- the support part 50 or 50 ' has an incision as a support bearing (or: a shaft seat) 54 or 54' for the carrier shaft 4 or 4 '(see FIGS. 3 and 4).
- the handling devices 2 and 2 ' are moved from both sides towards a workpiece 10 or 10' in the direction of the arrows shown, the axes M and N running coaxially to one another and horizontally, ie perpendicular to the force of gravity G. and wherein the flexible element 7 or 7 'is essentially undeformed.
- the connecting rod 53 or 53 ' now runs parallel to the axes M and N and the support part 50 or 50' supports the carrier shaft 4 or 4 'and thus the gripping device 3 or 3' connected to it in its support bearing 54 or 54 'from.
- the support device 5 or 5 'thus represents a mechanical bridging via the flexible element 7 or 7' and thus eliminates the flexibility of the handling device 2 or 2 'in the flexible element in the position according to FIG. ment 7 or 7 'at least in the spatial direction of gravity G and in the downward lateral directions between gravity G and the horizontal direction.
- the rigid connection is maintained solely by the weight of the parts of the handling device 2 or 2 '.
- the gripping devices 3 and 3 ' are in their vertical positions and are open.
- the gripping devices 3 and 3 ' are closed and thus the workpiece 10 is gripped at its ends 10A and 10B and transported to a forming machine by means of the transport devices 16 and 16' and placed there in the forming position for forming on a tool.
- the handling device 2 or 2 ' is held in the rigid state via the support device 5 or 5'.
- the support device 5 or 5' is brought out of engagement with the carrier shaft 4 or 4 ', since the support device 5 or 5' with the swivel drive 8 or 8 'and the joint 9 or 9 'remains aligned along the axis N or N' and thus the support part 50 or 50 'is sufficiently distant from the carrier shaft 4 or 4'.
- the die 12 serves as an abutment via the workpiece 10.
- the striking tool 13 now strikes the workpiece 10 on the striking bear of the forging hammer in the striking direction A (not shown further).
- the impact movement causes considerable shock and vibration loads which are transmitted via the workpiece 10 to the handling devices 2 and 2 '.
- the elastic elements 7 and 7 ' largely decouple these shocks or vibrations from the transport device 16 or 16' and the swivel drive 8 or 8 ', so that these drive devices are protected against overload.
- the gripping devices 3 and 3 'with the gripped workpiece 10 in the supported state ie with the support device 5 in engagement with the carrier shaft 4, by the desired pivoting angle ⁇ in the same direction of rotation and with the same rotational or swiveled the angular velocity in order to rotate the workpiece into its desired forming position without torsion.
- Such pivoting movements occur, for example, when a workpiece is bent in a first forging process or forging step and during the subsequent flat forming or forging.
- the rotatability of the gripping devices 3 and 3 ' can be omitted if rotation is not desired.
- FIG. 5 shows, starting from FIG. 2, the situation shortly after the striking tool 13 strikes the workpiece 10 and the surrounding areas of the tool 12.
- the striking tool 13 is again in one of the tools 12 due to the recoil and possibly by a drive directed upward movement in a return direction RH.
- the workpiece 10 is now raised or lifted from the tool 12 by a distance d.
- This release movement of the two handling devices 2 and 2 'and the workpiece 10 held by them thus follows the striking tool 13 moving upward in the same direction as the return direction RH.
- the handling devices 2 and 2 ' generally remain in the flexible position, as shown in FIG. 5.
- scale material is blown out of the lower tool 12 by means of a blower.
- the ventilation also shortens the contact time of the workpiece 10 with the lower tool or die 12.
- either the workpiece 10 can now be placed again on the tool 12 or on another die or a different engraving of the tool 12 and can be reshaped with the striking tool 13.
- the forming process can also be ended and the workpiece 10 can be moved out of the ventilated position shown in FIG. 5 by the two handling devices 2 and 2 'from the working area of the forming machine between the two tools 12 and 13 and transported to a storage device.
- FIG. 6 shows an exemplary embodiment of handling a workpiece 10 with two handling devices 2 and 2 ′, starting from the picking up on a preparation device 41 up to placing on a tool 12 of a striking forming machine.
- the trajectories or trajectories of the two handling devices 2 and 2 ' are denoted by S and S', the directions of movement are indicated by arrows.
- the two handling devices 2 and 2 ' are each started at a point in time tO from a parking or starting position S (tO) and S' (tO) and move towards the workpiece 10 on the preparation device 41.
- the handling devices 2 and 2 'each reach the ends 10A and 10B of the workpiece 10 at the respective positions S (ti) and S' (ti).
- the gripping devices 3 and 3 'grip the respective end 10A or 10B of the workpiece 10 and the handling devices 2 and 2' now transport the workpiece 10 along the trajectories S and S '.
- the two trajectories S and S ' run parallel to one another and the handling devices 2 and 2' are moved synchronously with one another.
- the workpiece 10 is essentially only moved in a translatory manner and not in a rotary manner.
- the difference vector ⁇ S '(tj) - S (tj) is always the same.
- the handling devices 2 and 2' insert the workpiece 10 into the work area between the tools 12 and 13 of the striking forming machine and move the workpiece 10 downward into a predetermined forming position on the tool 12 in an end position S. (tn) for the handling device 2 and S '(tn) for the handling device 2' at an end time tn on opposite sides of the work area or tool 12 of the forming machine.
- the workpiece 10 shown in broken lines now lies in the forming position on the tool 12 and can be formed.
- the handling devices 2 and 2 ′ which are also shown in broken lines, again hold the ends 10A and 10B of the workpiece 10.
- the handling devices 2 and 2 ' can now release the air as shown in FIG.
- the workpiece 10 can additionally or alternatively be converted from an engraving of the tool into another or also be transported away from the forming machine to a storage or from guiding device.
- the tools 12 and 13 are generally shaping tools, so-called dies, with engravings adapted to the desired shape of the workpiece.
- the handling devices generally hold the workpiece 10 during the entire forging cycle and carry out all the handling movements necessary for the forging process jointly and synchronously. Handling movements include release movements within an engraving and transfer movements from the feed device into the first engraving of the die, transfer movements between engravings of the die and transfer movements from an engraving of the die into a discharge device.
- workpieces are preferably also forged, the ends of which, at which the handling devices hold the workpiece during handling, are not symmetrical to the workpiece axis. These workpieces are stretched in previous work steps, with the result that the ends of the workpiece are formed asymmetrically. Due to the fact that the workpiece 10 is gripped at both ends 10A and 10B by a handling device 2 and 2 ', the workpiece 10 is automatically aligned, so that the workpiece 10 is inserted into the engraving or the tool 12 in the correct position in its deformed position.
- the common and synchronous driving of the two handling devices 2 and 2 ' is achieved via an electrical coupling between the two handling devices 2 and 2', the coupling via the master-slave Operation of electrical drives or by simultaneously starting independently operating drives.
- the start signal for the individual handling steps is supplied by a control device which controls the sequence between the striking forming machine and the two handling devices 2 and 2 '.
- This control device can also carry out the complete signal exchange.
- the control device works with the aid of at least one digital processor, in particular a microprocessor or a digital signal processor, and corresponding memories in which the sequence programs, control algorithms and data for the movements are stored.
- Known master-slave control units can be used for master-slave operation. For independently operating drives, the same distances and speeds as well as error feedback and error reactions between the independent drives are provided in order to ensure precise and safe operation in the event of a fault.
- a workpiece is fed by means of a feed device or provision device.
- both handling devices 2 and 2 'grip the workpiece 10 and insert the workpiece 10 together and synchronously into an engraving of the die of the striking die-forming machine.
- the striking die-forming machine is triggered at a variable point in time during or at the end of the handling movement and after triggering the further handling of the workpiece is initiated at a variable point in time during or at the end of the striking movement.
- This further handling is again common and synchronous by both handling devices 2 and 2 'and can be a lifting movement of the workpiece in the same engraving, a joint and synchronous transfer of the workpiece into another engraving or the joint and synchronous transfer of the workpiece into a storage device for the finished formed workpiece.
- the second handling device 2 also grips the workpiece 10 at a later point in the forging cycle and both handling devices 2 and 2' forge from this point in time together and in sync like already described.
- the partial relocation or forging with only one handling device is particularly useful if more than two handling devices are used, since in this case the other handling device or devices can already pick up a new workpiece and possibly forge it when the other two handling devices finish forging the previous forged part or insert into a discharge device.
- This design with at least three handling devices enables shorter cycle times.
- FIG. 7 shows a further exemplary embodiment of a device for handling a workpiece during a forging process.
- This device again comprises two handling devices 2 and 2 'with respective gripping devices 3 and 3', which are shown schematically as industrial robots.
- the two handling devices 2 and 2 ' pick up a workpiece 10 from a supply device 41, for example a feed conveyor belt or another automated feed device, and place the workpiece in a first engraving 17 of a tool 12 of a striking die-forming machine.
- the counter tool or striking tool of this die-forming machine is not shown and would be located above the drawing plane in the plan view shown.
- the impact tool of the forming machine is triggered during or at the end of the handling movement or transfer movement from the provision device 41 into the first engraving 17 of the tool 12.
- a new sequence for the further handling of the workpiece 10 is initiated at a point in time during or at the end of the impact movement of the impact tool.
- the workpiece 10 is fixed in its deformed position on the engraving 17 by the two handling devices 2 and 2 'and held at both ends.
- the workpiece 10 is handled jointly and synchronously by the two handling devices 2 and 2 'in accordance with the stored further handling routine.
- the workpiece 10 is lifted, as already explained with reference to FIG. 5, and then either processed again in the first engraving 17 or immediately converted into the second engraving 18 of the tool 12. After the workpiece 10 has been converted into the second engraving 18, a U-shape takes place again.
- the further joint, synchronous handling of the workpiece 10 is again at an adjustable point in time during or at the end the stroke movement initiated.
- the workpiece can now be lifted together and synchronously by the two handling devices 2 and 2 'in the second engraving 18 and, if necessary, reinserted in the engraving 18 for further processing, or the workpiece 10 can immediately be placed in the storage device 42 for the Completely formed workpiece 10 can be implemented.
- FIG. 8 shows a parking or rest position of the two handling devices 2 and 2 'in a device according to FIG. 7.
- the parking position of the handling devices there is access to the tools 12 and 13 of the forming machine for tool change, post-processing or for manual test operation of the striking device Forming machine possible.
- the movement of the handling devices 2 and 2 'and thus the handling movements for the workpiece 10 are generally taught.
- the workpiece 10 is guided with the two handling devices 2 and 2 'along the intended trajectory and, if necessary, rotational movements in a learning process, and the individual spatial points or the corresponding movement parameters in the movement system of the handling devices 2 and 2' are measured at regular intervals, typically 16 ms, saved.
- regular intervals typically 16 ms
- the trajectories S and S 'of the handling devices 2 and 2' are each in the form of discrete data records which each belong to a point on the trajectories, starting from the path points S (tO) and S '( tO) via S (ti) or S '(ti), S (tj) or S' (tj) to the end point S (tn) or S '(tn).
- the movement is performed along the stored trajectories S and S '.
- the handling devices 2 and 2 ' can have independent drive systems and control systems in terms of hardware, but are electrically or electronically coupled by the mutually adapted control programs and sequences which enable the synchronous movements.
- This embodiment has the advantage over master-slave operation that there is no drag gap between the two handling devices 2 and 2 ' the step-by-step succession arises as in master-slave operation, but the two handling devices 2 and 2 'are at any time tm on synchronous or parallel path points.
- handling devices 2 and 2 ' in addition to the embodiments described with reference to FIGS. 1 to 4, other manipulators or industrial robots can also be used, preferably good damping of the movement joints and other movement mechanisms being provided in order to keep the drives from the recoil and the vibrations to relieve the impact of the striking tool of the forming machine.
- the handling devices mentioned in the introduction according to DE 42 20 796 A1 or DE 100 60 709 A1 can also be used.
- handling movements can also be provided by the handling devices 2 and 2 ′ with or without a workpiece 10.
- the distance between the gripping devices is generally dependent on the length or dimension of the workpiece measured along this distance and generally remains constant during the synchronous joint handling.
- a change in volume or shape of the workpiece after the shaping process in particular an elongation of the workpiece, can also be taken into account by the handling devices 2 and 2 'changing their points of attack on the workpiece, for example reaching further outside when the workpiece is elongated.
- the gripping pressure of the gripping devices 3 and 3 ' can be reduced and - without letting go or opening the gripping devices 3 and 3' - the gripping devices 3 and 3 'of the handling devices 2 and 2' can be pulled further outwards along the workpiece 10
- the movement trajectories of the two handling devices can also differ from one another in an adapted manner, for example in an offset or a correction, for example if the Workpieces have different burrs or other different shapes on the attack areas.
- the workpiece can also be rotated about an axis of rotation, in particular with the aid of the embodiments of the handling devices described with reference to FIGS. 1 to 4. Furthermore, of course, rotary movements or portions of rotary movements for transporting the workpiece 10 are also possible, for example in order to get through narrow areas on the transport path.
- the error communication via the control device shown in FIGS. 7 and 8 allows the process to be interrupted at a certain point in time in the event of an impermissible deviation of one of the handling devices from the prescribed trajectory, in particular to stop the handling devices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Manipulator (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Turning (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08005314A EP1944103A3 (de) | 2003-06-06 | 2004-05-28 | Verfahren und Vorrichtung zum Umformen eines Werkstücks mit automatischer Handhabung |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10326105 | 2003-06-06 | ||
DE10333394A DE10333394A1 (de) | 2003-06-06 | 2003-07-23 | Verfahren und Vorrichtung zum Umformen eines Werkstücks mit automatischer Handhabung |
PCT/EP2004/005782 WO2004108323A1 (de) | 2003-06-06 | 2004-05-28 | Verfahren und vorrichtung zum umformen eines werkstücks mit automatischer handhabung |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08005314A Division EP1944103A3 (de) | 2003-06-06 | 2004-05-28 | Verfahren und Vorrichtung zum Umformen eines Werkstücks mit automatischer Handhabung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1631401A1 true EP1631401A1 (de) | 2006-03-08 |
EP1631401B1 EP1631401B1 (de) | 2008-05-14 |
Family
ID=33512390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04735197A Expired - Lifetime EP1631401B1 (de) | 2003-06-06 | 2004-05-28 | Verfahren und vorrichtung zum umformen eines werkstücks mit automatischer handhabung |
Country Status (4)
Country | Link |
---|---|
US (1) | US7350389B2 (de) |
EP (1) | EP1631401B1 (de) |
DE (1) | DE502004007147D1 (de) |
WO (1) | WO2004108323A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005053874A2 (de) * | 2003-12-01 | 2005-06-16 | Knipex-Werk C. Gustav Putsch Kg | Verfahren zum gesenkschmieden und schmiedevorrichtung zur durchführung des verfahrens |
DE102004035797B9 (de) * | 2004-07-23 | 2006-07-13 | Langenstein & Schemann Gmbh | Verfahren und Vorrichtung zum Überführen eines Werkstücks |
EP1815972B1 (de) * | 2006-02-06 | 2013-12-18 | ABB Research Ltd. | Pressenstrassensystem und Verfahren |
DE102006049956A1 (de) * | 2006-10-19 | 2008-04-24 | Abb Ag | System und Verfahren zur automatisierten Ver- und/oder Bearbeitung von Werkstücken |
DE102007011188B4 (de) | 2007-03-06 | 2015-01-22 | Langenstein & Schemann Gmbh | Vorrichtung und ein Verfahren zum Handhaben von Schmiedeteilen |
DE102010037896B4 (de) | 2010-09-30 | 2017-06-08 | Langenstein & Schemann Gmbh | Verfahren und Vorrichtung zum Umformen eines Werkstücks |
CN104138947B (zh) * | 2013-05-06 | 2016-08-24 | 珠海格力电器股份有限公司 | 弯管机及其夹头装置 |
RU2602586C2 (ru) * | 2015-02-16 | 2016-11-20 | Общество с ограниченной ответственностью Научно-производственное предприятие "МЕТЧИВ" (ООО НПП "МЕТЧИВ") | Способ радиальной ковки |
CN107552708B (zh) * | 2017-08-21 | 2018-08-10 | 河南鑫安利安全科技股份有限公司 | 一种锻造安全防护装置 |
DE102019113764A1 (de) | 2019-05-23 | 2020-11-26 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Konfiguration einer werkstückbezogenen Werkstückhalteeinrichtung für die Pressenautomatisierung |
DE102020100149B4 (de) * | 2020-01-07 | 2021-09-16 | Frauenthal Powertrain Gmbh | Manipulationsvorrichtung zum Handhaben eines durch ein Umformwerkzeug umzuformenden Werkstücks sowie Verfahren |
WO2024159205A1 (en) * | 2023-01-27 | 2024-08-02 | Ohio State Innovation Foundation | Systems and methods for the local incremental deformation of local component regions |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3128817A (en) * | 1964-04-14 | Apparatus for forming threads on pipe ends | ||
US3874048A (en) * | 1972-12-04 | 1975-04-01 | Bundy Corp | Method and apparatus for fabricating tubing |
DE2554277A1 (de) | 1975-12-03 | 1977-06-16 | Banning Ag J | Vorrichtung zum manipulieren eines schmiedestuecks in einer maschine, insbesondere in einer schmiedepresse oder in einem schmiedehammer |
AT348846B (de) | 1977-09-26 | 1979-03-12 | Wefoba | Verfahren zur automatischen herstellung von gesenkschmiedeteilen ausgehend von spaltstuecken und vorrichtung zu seiner durchfuehrung |
IT1129497B (it) | 1980-12-29 | 1986-06-04 | Teksid Spa | Impianto automatico per stampaggio a caldo e sbavatura di particolari metallici |
DE3422810A1 (de) | 1984-06-20 | 1986-01-02 | Maschinenfabrik Andritz Ag, Graz | Schmiedepresse |
JPH0710408B2 (ja) | 1986-11-12 | 1995-02-08 | 株式会社日立製作所 | 変断面長物の鍛造成形方法及び装置 |
US5206036A (en) * | 1988-10-19 | 1993-04-27 | E. I. Du Pont De Nemours And Company | Apparatus for shaping fiber reinforced resin matrix materials |
JPH05277612A (ja) | 1992-04-02 | 1993-10-26 | Ishikawajima Harima Heavy Ind Co Ltd | 棒鋼材鍛造方法及び鍛造設備 |
DE4220796C2 (de) | 1992-06-25 | 1997-07-10 | Langenstein & Schemann Gmbh | Flexibel einstellbare Verbindung zwischen Fahrwerk und Greifzange eines Handhabungsgeräts für eine Schmiedeeinrichtung |
JPH07185718A (ja) | 1993-12-16 | 1995-07-25 | Sms Hasenclever Mas Fab Gmbh | インゴットのストレッチ鍛造設備 |
DE19630023B4 (de) * | 1996-07-25 | 2008-01-10 | Felss Burger Gmbh | Einrichtung zum Verformen von stabförmigen Bauteilen |
DE10060709B4 (de) | 2000-12-07 | 2004-12-02 | Langenstein & Schemann Gmbh | Handhabungsgerät zum Halten eines Schmiedeteiles beim Schmiedevorgang |
-
2004
- 2004-05-28 EP EP04735197A patent/EP1631401B1/de not_active Expired - Lifetime
- 2004-05-28 WO PCT/EP2004/005782 patent/WO2004108323A1/de active IP Right Grant
- 2004-05-28 US US10/559,046 patent/US7350389B2/en not_active Expired - Lifetime
- 2004-05-28 DE DE502004007147T patent/DE502004007147D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2004108323A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004108323A1 (de) | 2004-12-16 |
US7350389B2 (en) | 2008-04-01 |
EP1631401B1 (de) | 2008-05-14 |
US20060123871A1 (en) | 2006-06-15 |
DE502004007147D1 (de) | 2008-06-26 |
WO2004108323A8 (de) | 2005-07-14 |
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