EP3697546A1 - Dispositif d'entraînement, dispositif d'encochage et procédé d'entraînement d'un dispositif d'encochage - Google Patents

Dispositif d'entraînement, dispositif d'encochage et procédé d'entraînement d'un dispositif d'encochage

Info

Publication number
EP3697546A1
EP3697546A1 EP18789380.5A EP18789380A EP3697546A1 EP 3697546 A1 EP3697546 A1 EP 3697546A1 EP 18789380 A EP18789380 A EP 18789380A EP 3697546 A1 EP3697546 A1 EP 3697546A1
Authority
EP
European Patent Office
Prior art keywords
plunger
drive
drive shaft
axis
workpiece
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.)
Pending
Application number
EP18789380.5A
Other languages
German (de)
English (en)
Inventor
Martin Hagel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hsf Automation GmbH
Original Assignee
Hsf Automation GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hsf Automation GmbH filed Critical Hsf Automation GmbH
Publication of EP3697546A1 publication Critical patent/EP3697546A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/22—Notching the peripheries of circular blanks, e.g. laminations for dynamo-electric machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/14—Forming notches in marginal portion of work by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/266—Drive systems for the cam, eccentric or crank axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/26—Programme control arrangements

Definitions

  • the present invention relates to a driving device, a grooving device and a method of driving a grooving device.
  • Grooving punches are used, for example, for producing rotor and stator laminations for electric motors and generators. In small series or due to large sheet diameter often not worth the production in a complete cut due to the tool costs. Therefore, the sheets are produced in several punching operations with a single Nutstkov, the so-called Einzelnutung.
  • Notching is performed as a C-frame punching.
  • the punches have an electric, speed-controlled main drive, which drives a flywheel and the power via a clutch / brake combination on the drive mechanism and finally the ram forwards.
  • the rearward-facing portion of the C-frame of these machines is used to house the main drive and other power transmission components.
  • This object is achieved by a drive device, a device for notching and a method for driving a device for grooving according to the skin spans.
  • the main drive of a device for Nutenstanzen be executed as a direct drive.
  • a device may include a frame with a stand and a head piece and a coupled to the head piece and along a longitudinal axis extending to a y-axis punch axis movable plunger and optionally further comprise a dividing attachment for receiving a workpiece to be machined.
  • the divider can be coupled to the frame.
  • the dividing apparatus may be configured to move the workpiece about a longitudinal axis to the y-axis
  • Rotary divider axis to receive rotatable. To drive the plunger while an electric direct drive is provided.
  • the device for notching is also referred to as Nutenstanze, punch or machine.
  • the drive device can be used as a replacement for known drives of
  • the device can be used for example for producing stator and rotor laminations for electrical machines.
  • the Ge Anthony can be designed as a so-called C-frame or as an O-frame, then with another stand.
  • the plunger, driven by the drive device, can be moved linearly along the punch axis.
  • the frame can be made in one piece as a so-called monoblock or multiple parts. An end of the plunger facing away from the head piece can have or receive a tool for punching a groove into a workpiece.
  • the dividing apparatus may be connected to the frame or in the assembled state of the device to the ground.
  • the dividing attachment may be an apparatus as already used in known notching dies.
  • Dividing apparatus may include means for holding and rotating the workpiece about the parting axis.
  • both a punching stroke required for a punching operation and a lifting stroke of the plunger required for an exchange of the workpiece can be carried out.
  • a pendulum stroke can be realized, which allows a high degree of flexibility in controlling the movement of the plunger.
  • the direct drive can have an electric machine, a drive shaft that can be driven by the electric machine and an extender, and a connecting rod that is coupled to the eccentric and can be coupled to the plunger.
  • the drive shaft may be rigidly connected to a rotor of the electric machine. In this way, the drive movement can be transferred very directly to the plunger.
  • such a direct drive requires a very small space and can thus be integrated, for example, directly into the head of the device.
  • the drive device may comprise a housing in which at least one electric machine of the direct electrical drive is arranged.
  • the housing may have a mechanical interface for attaching the housing to the head piece
  • Headpiece adapted shape of the housing or by a on the housing
  • the drive device may have a control device.
  • the controller may be configured to provide an electrical control signal for effecting rotation of a drive shaft of the direct drive.
  • Control device can be designed as a control device comprising an electrical circuit with suitable interfaces for receiving and outputting electrical signals.
  • the control device can be designed to be programmable, so that in a simple manner a movement profile of the plunger can be adapted to a workpiece to be machined.
  • An apparatus for grooving has the following features: a frame with a stand and a headpiece connected to the stand; a plunger coupled to the head and movable along a punch axis extending longitudinally to a y-axis; optionally, a dividing apparatus for receiving a workpiece to be machined, the dividing apparatus being coupled to the frame and configured to rotate the workpiece about a part axis parallel to the y-axis; and a driving device for driving the plunger.
  • the frame may include a second stator disposed along an x-axis offset from the stator.
  • the head piece can be arranged between the uprights and, for example, connect a free end of the stand to a free end of the second upright.
  • the dividing head axis and the punching axis can be arranged offset from each other along a z-axis.
  • a O-frame can be realized. As a result, the direct drive can be used even better than with a C-frame.
  • Direct drive can be arranged on the head piece. In this way, the electric machine can be arranged very close to the plunger.
  • a method of driving such a grooving device comprises the following step:
  • the step of turning may include a pre-twisting step in which the drive shaft is rotated in a first rotational direction by a first portion of a full revolution and includes a step of turning back in which the drive shaft is rotated in a second rotational direction opposite the first rotational direction first part is turned.
  • the first portion may correspond to a first angle of rotation about which the drive shaft is rotated.
  • the first rotation angle can be less than 360 °.
  • the drive shaft may be rotated to move the ram from an upper reversal point to a lower reversal point back to the upper reversal point.
  • the drive shaft can be rotated back to move the plunger from the upper reversal point on the lowest reversal point back to the upper reversal point.
  • the plunger can make downward movement and upward movement, respectively. It can thus at Pre-turning and each turning a punching stroke for punching a groove are performed.
  • a lower or lowermost reversal point can be understood as meaning a position of the plunger in which a tool of the device has penetrated the workpiece and thus a groove has been punched.
  • the step of rotating may comprise a pre-rotating step in which the drive shaft is rotated in the first direction of rotation by a second portion of one full turn and includes a step of turning back in which the drive shaft is in the second direction of rotation about the second portion is turned.
  • the second part may differ from the first part.
  • the second portion may correspond to a second angle of rotation which differs from the first angle of rotation in terms of magnitude and / or with respect to the position in the full circle.
  • the drive shaft can be rotated to move the plunger from an upper reversal point to a lower reversal point.
  • the drive shaft can be rotated back to move the plunger from the lower reversal point to the upper reversal point.
  • the plunger can be moved upwards again during pre-rotation, for example, and when reversing, and thus a punching stroke can be realized.
  • the rotation axis can be rotated from a current position to a predetermined rest position to effect a lift stroke of the plunger.
  • the plunger may be in a top dead center when the drive shaft is in the rest position.
  • the lifting stroke and punching stroke can be realized with one and the same drive.
  • Punching movement of the plunger are adapted to each other. Also, one can
  • the drive shaft in a first period of time at a first rotational speed and in a second time period with one of the first Rotational speed differing second rotational speed can be rotated.
  • the drive shaft may rotate at different rotational speeds. This allows the timing of a punching process to be controlled very flexibly.
  • a computer program product with program code which can be stored on a machine-readable carrier such as a semiconductor memory, a hard disk memory or an optical memory and is used to carry out the method according to one of the embodiments described above if the program product is installed on a computer or a device is also of advantage is performed.
  • a corresponding program code can, for example, from the mentioned
  • FIG. 1 shows a schematic representation of a device for notching according to an embodiment
  • FIG. Fig. 2 is a sectional view of a device for notching according to a
  • Fig. 3 is a schematic representation of a drive device for a
  • Fig. 4 is an illustration of a frame of a device for notching
  • Fig. 5 is a schematic representation of a direct drive according to
  • 6 shows time profiles of a movement of the plunger and the workpiece according to an embodiment
  • 7 shows temporal courses of a movement of the plunger and the workpiece according to an embodiment
  • 8 is a schematic representation of different strokes of the plunger according to an embodiment
  • 9 is a flowchart of a method of driving a notching apparatus according to an embodiment
  • FIG. 10 is a schematic representation of a tool cassette according to a
  • Fig. 1 1 is a schematic representation of a tool cassette according to a
  • Fig. 13 is a schematic representation of a punching system according to a
  • FIG. 1 shows a schematic representation of a device 100 for notching according to an exemplary embodiment.
  • the device 100 is used to
  • the apparatus 100 comprises a frame comprising at least a first stand 104, a header 106 and optionally a second stand 108.
  • the frame comprises a table frame 1 10.
  • the frame is fixed in the assembled state of the device 100, for example, on the floor 1 12 a production hall.
  • the frame can be made in one piece or in several pieces.
  • the stands 104, 108 have according to one embodiment a
  • Main extension direction along an x-axis of an orthogonal coordinate system The head piece 106 spans a gap between the uprights 104, 108 which, according to this embodiment, are arranged offset from each other along the x-axis.
  • the frame thus forms a gate, or together with the table frame 1 10 a solid, which encloses a working space.
  • a main extension plane of the working space also referred to as the working space level, extends parallel to the x-y plane.
  • the work space is thus bounded laterally by the uprights 104, 108, upwardly through the headpiece 106 and downwardly through the floor 1 12 or the table frame 1 10.
  • the device 100 may comprise a C-frame with only one stand 104 and the head piece 106.
  • the device 100 comprises a plunger 14 which can be moved back and forth along a punching axis 16, here up and down.
  • the plunger 1 14 is coupled to the head piece 106.
  • the plunger 1 14 is from a direct drive 1 18 comprehensive
  • the direct drive 1 18 is arranged on the head piece 106.
  • the device 100 optionally has a dividing apparatus 120.
  • the dividing apparatus 120 is connected, for example, to the frame or the floor 1 12.
  • the dividing apparatus 120 is supported by the stands 104, 106 or the table frame 1 10.
  • the dividing apparatus 120 is formed to receive and to hold the workpiece to be machined during a punching operation.
  • the dividing apparatus 120 is configured to rotate the workpiece 102 about a unit axis 122.
  • the dividing head 120 has a turning device 123 indicated in FIG. 1, for example in the form of an electric motor.
  • the Operaapparatachse 122 is aligned along the y-axis and offset from the punch axis 1 16. According to this embodiment, the
  • the apparatus 100 includes means 124 for moving the workpiece 102 or the entire dividing apparatus 120.
  • means 124 for moving the workpiece 102 or the entire dividing apparatus 120 For example, a distance between the divider axis 122 and the punch axis 16 can be changed.
  • the device 124 or another device is designed to additionally or alternatively move the workpiece 102 or the entire dividing apparatus 120 along the x-axis.
  • a lower tool part At the free end, here the table frame 1 10 facing the end of the plunger 1 14 a tool upper part and on a side facing away from the plunger 14 1 of the workpiece 102, a lower tool part.
  • the lower tool part is arranged, for example, on a table top of the device 100 coupled to the frame.
  • the tool parts can be tool parts, as they are already used in known Nutenstanzen.
  • Tool upper part can form a tool cassette together with the lower tool part I.
  • a movement of the plunger 1 14 along the punch axis 1 16 in the direction of the table frame 1 10 can be made using the tool shell and the
  • the plunger can perform a punching stroke.
  • the direct drive 1 18 has a drive shaft, which is coupled via a connecting rod with the plunger 14 1.
  • the direct drive 1 18 is designed to effect the punching stroke of the plunger 1 14 by a rotation of the drive shaft.
  • the drive shaft is rotated according to an embodiment only by a portion of a full revolution.
  • the plunger 14 is moved between an upper turning point and a lower turning point.
  • the plunger 1 14 in a so-called Lucashüb so far in an upper reversal point moved which creates a continuous gap between the upper die and the tool through which the workpiece, ie the unprocessed workpiece and / or the machined workpiece, and in particular a center of the workpiece, can be driven through.
  • the gap may thus extend along a plane extending transversely to the y-axis.
  • the upper and the lower tool part are arranged spaced from each other without overlapping. Without overlapping, it can be understood that the tool parts can be moved long along the z-axis and along the x-axis relative to one another, without any contact of the tool parts.
  • the direct drive 1 18 is formed to cause the Lsymmetrichub of the plunger 14 1 also by a rotation of the drive shaft.
  • the device 100 has a control device 126.
  • the controller 126 is configured to provide an electrical control signal for controlling the direct drive 118.
  • the controller 126 is further configured to provide another control signal for controlling the rotator 123. This makes it possible to match the movements of the plunger and the workpiece to each other.
  • the control device 126 can be arranged on the frame, in the direct drive 1 18 or also externally to the device 100.
  • the apparatus 100 is implemented as a machine, which may be either a hand-insertion machine or a machine.
  • a machine which may be either a hand-insertion machine or a machine.
  • the workpieces here for example sheets 102 are inserted by hand and removed again.
  • the device 100 requires due to the running with the direct drive 1 18 drive device no additional Lsymmetricachse to create enough space for loading and removal of the sheets by the automation.
  • the device 100 designed as Nutenstanze due to the direct drive on no fixed stroke.
  • the stroke of the plunger 1 14 can be flexibly adapted to the manufacturing process. It is also not a flywheel for the
  • the device 100 does not require an additional axle, which would rotate an additional eccentric to generate the LBAhub. The control is therefore very easy to realize despite the cycle times.
  • the divider axis 122 does not limit the speed of the overall process. Instead, the free movement of the
  • Tool and the flexible ram stroke can be used to optimize the speed of the overall process. Due to the direct drive, the plunger movement is no longer limited to a sinusoidal profile that can not be influenced. H. z. As in intermittent punching, it is no longer necessary that the unit axis 122 copes with a very high dynamics, since in the same period a larger angle step is to drive. Since the punch need not necessarily make a full stroke per punching stroke, the impact speed of the punch on the tool can be kept small and has a positive effect on the life of the tool. Clutch and brake as well as the mechanical drive train are susceptible to wear. For maintenance, it is not necessary to disassemble a complete driveline located in the machine's enclosure. The so-called two-position punching, in which additional grooves or markings are introduced in a second punching plane, is possible only with little effort in the punching tool or the drive mechanism. The possible number of strokes to move is very large.
  • the Drive device is the main drive of the device 100 in the form of a direct drive, for example with a torque motor.
  • the direct drive 1 18 optionally has a dynamic mass balance and optional water cooling on.
  • FIG. 2 shows a sectional view of a device 100 for notching according to one exemplary embodiment. This can be a section through the device described with reference to FIG. 1 along a sectional plane running parallel to the x-z plane.
  • a section through the first stator 104 and the second stator 108 and a plan view of the table frame 1 10 is shown.
  • an upper tool frame of a tool upper part 230 of the device 100 is shown.
  • Tool upper part 230 is along the punch axis 1 16 described with reference to FIG. 1 movable.
  • the tool upper part 230 has two through holes serving as tool guides 232.
  • the workpiece 102 hereinafter also referred to as plate 102, is shown in two positions. In the position shown at the top in FIG. 1, the unprocessed workpiece 102 is shown, which is supplied to the device 100 by a first movement 234 and is deposited, for example, on the dividing apparatus of the apparatus 100 described with reference to FIG.
  • the first movement 234 corresponds to a loading of the
  • the workpiece 102 is shown at the second position shown in Fig. 1 below. In the second position, the workpiece 102 can be processed. After machining, the then machined workpiece 102 is moved away from the device 100 by a second movement 236. The second
  • Traversing movement 236 corresponds to unloading the device 100.
  • the first movement 234 and the second movement 236 are identical.
  • the traversing movements 234, 236 extend along a travel axis running along the z-axis.
  • the workpiece 102 is completely passed through the work space spanned by the frame of the device 100.
  • a center point 238 of the workpiece 102 is passed between the first stator 104 and the second stator 108.
  • the traverse axis is orthogonal to a Haupterstreckungsnchtung of the table frame 1 10 and thus the head piece aligned.
  • a hatched portion of the workpiece 102 shown at the second position represents an area where there is room for a sucker or gripper when the workpiece 102 is removed. Since the workpiece 102 is taken parallel to the z-axis, the area also extends in a section between the tool upper part 230 and the uprights 104, 108.
  • the workpiece 102 is exemplified as a round sheet 102.
  • a differently shaped, for example, a rectangular board 240 can be processed in a corresponding manner.
  • FIG. 3 shows a schematic representation of a drive device for a device for notching according to one exemplary embodiment.
  • the drive device comprises the direct drive 1 18 for driving the plunger of the device, the rotating means 123 for rotating a part located on the workpiece and a workpiece
  • Control device 126 The controller 126 is configured to provide an electrical control signal 318 for controlling the direct drive.
  • the control signal 318 is adapted to control a rotation of a drive shaft of the direct drive 1 18.
  • the control signal 318 is configured to control a rotational speed, a rotational direction and a rotational angle of the drive shaft.
  • the controller 126 is configured to provide the control signal 318 having a first signal characteristic that causes the drive shaft to rotate from a first reference position in a first rotational direction about a first portion of a full revolution of the drive shaft. The rotation of the first part rotates the drive shaft to a second reference position.
  • the first reference position can be a first
  • the Drive shaft correspond.
  • the first portion may correspond to a rotational angle about which the drive shaft is rotated to be rotated from the first angular position to the second angular position.
  • Drive shaft coupled ram are moved from an upper reversal point on a lowermost reversal point back to the upper reversal point.
  • the controller 126 is configured to provide the control signal 318 with a second signal characteristic that causes the drive shaft to rotate from the second reference position counter to the first direction of rotation by the first portion of the full revolution of the drive shaft. By turning around the first portion, the drive shaft is in the first
  • the controller 126 is configured to provide the control signal 318 having a third signal characteristic, by which a
  • Turning the drive shaft for example, starting from the first reference position or a further reference position in the first direction of rotation is effected by a second portion of a full revolution of the drive shaft.
  • the rotation about the second portion rotates the drive shaft to a third reference position.
  • Reference position may correspond to a third angular position of the drive shaft and correspond to a further lower reversal point of the plunger.
  • the controller 126 is configured to provide the control signal 318 having a fourth signal characteristic that causes the drive shaft to rotate from the third reference position counter to the first direction of rotation by the second portion of the full revolution of the drive shaft. By rotating about the second portion of the drive shaft is rotated back to the first reference position or the other reference position. Thus, another punching plane of the tool of the device can be used. As a result, a two-position punching is realized.
  • the controller 126 is configured to provide the control signal 318 having a fifth signal characteristic that causes the drive shaft to rotate to a rest position.
  • the rest position may correspond to a top reversal point of the plunger.
  • the signal characteristics may differ, for example, with respect to an analog signal form, for example the signal amplitude, the signal frequency or the pulse duration, and / or with respect to digital data to be transmitted.
  • the control signal 318 may have different signal characteristics at different times. As an alternative to a control signal which can assume different signal characteristics, different control signals can be used.
  • the control signal 318 may be used to move the plunger between an uppermost and a lower maximum approachable level as optimally as possible for the operation of the device.
  • the direct drive 1 18 can be controlled using the control signal 318 so that a pendulum operation of the plunger is performed by a back and forth turning the drive shaft.
  • the controller 126 is configured to provide an electrical drive signal 323 for controlling the rotator 123 to rotate the workpiece located on the dividing apparatus.
  • the controller 126 is configured to tune the drive signal 323 and the control signal 318 to each other. This allows, for example, that the
  • Rotary speed of the drive shaft is adjusted depending on a current course of rotation of the workpiece about the
  • Operaapparatachse shows an illustration of a frame of a device for notching according to one exemplary embodiment. This may be an embodiment of the frame described with reference to FIG. 1.
  • the frame represents a machine frame in the form of an O-frame.
  • the frame comprises the first stand 104, the head piece 106, the second stand 108 and the table frame 1 10.
  • On a side facing the head piece 106 of the table frame 1 10 two rails 450 for guiding the dividing apparatus and a table plate 452 for the lower tool are arranged .
  • a direct drive can be arranged, as shown for example in Fig. 5.
  • Fig. 5 shows a schematic representation of a direct drive 1 18 for a device for notching according to one embodiment. This may be a direct drive 18 of a drive device mentioned with reference to FIG.
  • the direct drive 1 18 comprises an electric motor 560 with a rotor 562 and a stator 564 and a drive shaft 566 which can be driven by the electric motor 560 and which is also referred to as an eccentric shaft.
  • the drive shaft 566 is according to one embodiment, the shaft connected to the rotor 562 of the
  • a rotational speed of the electric motor 560 may correspond to a rotational speed of the drive shaft 566.
  • the drive shaft 566 carries an eccentric 568.
  • the eccentric 568 is coupled to a connecting rod 570 via a bearing 572 for the connecting rod 570.
  • the connecting rod 570 is coupled in the ready state of the device with the plunger shown for example in Fig. 1.
  • the drive device has a housing 574 and the drive shaft 566 is mounted on the housing 574 via a bearing 576 of the housing 574.
  • the housing 574 encloses the electric motor 560.
  • the direct drive 1 18 can be arranged on the head of the device shown in Fig. 1 or integrated into the head piece.
  • the drive device is a main drive of the device and is as a direct drive 1 18 with the electric motor 560 in the form of a Torque motor executed.
  • a dynamic mass balance and / or a water cooling can be provided.
  • the ram stroke can be set freely and thus both the freedom of movement of the tool, as well as the interaction between the main drive and divider depending on the process programmed and optimized.
  • the main drive can drive more dynamically in a shorter time to give the dividing apparatus more time.
  • This optimization can also be applied in reverse. Due to the oscillation and the lower ram stroke, the impact speed can be greatly reduced, which is very advantageous for the tool life.
  • no additional axis is required for the air bucket, but can be done simply by a suitable positioning, or by stopping at top dead center.
  • the direct drive 1 18 in the form of a drive unit is optional in the separate
  • Housing 574 mounted and can be easily disassembled for maintenance or replacement of the base frame of the device. Another advantage in connection with the O-frame and an automation concept in which the workpiece is driven through the device is that when commuting accordingly constructed guides of the tool can remain engaged and are separated only during the LBAhubs, so that sufficient space is created to feed the workpiece through the device.
  • the main drive and the sectionapparatachse have according to one embodiment, a common electronic Leitwelle. Towards the end of the stamping process for
  • Two-position punching be performed.
  • two punches are installed at different heights in the tool.
  • direct drive 1 18 can be driven with the plunger so that only a plunger is immersed and then reversed before hitting the second punch.
  • a next stroke can be driven, for example, over the previous lower reversal point. This process is again freely programmable for each groove.
  • the running as a drive unit drive device is according to a
  • Embodiment mounted in the separate housing 574 and can be easily disassembled for maintenance or replacement of the base of the punch.
  • the direct drive 1 18 has an integrated mass balance on the drive shaft, which compensates for the accelerations of the plunger including the tool weight.
  • the avoidance of vibrations contributes to smoothness and extending the life of all machine elements.
  • the main drive as a direct drive 1 18 very few components and also offers a very rigid drive due to the small space, which is due to the
  • the main drive is cooled liquid according to one embodiment and is roller-mounted according to an embodiment. This avoids temperature influences in the form of longitudinal expansion, which otherwise affect the production process in the
  • Fig. 6 temporal courses 616, 622 of a movement of the plunger and the workpiece according to one embodiment. This may be a progression 616 of the movement of the plunger along the punch axis shown in FIG. 1 and a profile 622 of the rotation of the workpiece about the unit axis shown in FIG. 1.
  • the abscissa shows the time t and the ordinate a distance s with respect to the course 616 of the movement of the plunger and an angular position ⁇ with respect to the course 622 of the rotation of the workpiece.
  • the course 616 corresponds to a rotation of the drive shaft, for example of the direct drive shown in FIG. 5, for example with a constant rotational speed or a variable rotational speed.
  • the level s0 corresponds to a lower reversal point of the plunger, the level s1 of a lower side of the workpiece, the level s2 of a top of the workpiece, the level s3 a level of a holddown for the workpiece and the level s4 an upper reversal point of the plunger.
  • the distance between s1 and s2 thus corresponds to a sheet thickness of the workpiece.
  • the distance between s0 and s4 corresponds to a punching stroke of the tappet.
  • the time span ts between the times t1 and t3 corresponds to a punching operation. At time t2, the lower reversal point is reached and at time t4 the upper reversal point of the plunger is again reached.
  • the drive shaft between the times tO and t4 in a first rotational direction by a proportion of a full revolution of the
  • the drive shaft between the times tO and t2 in a first rotational direction by a proportion of a full
  • the time t5 indicates an end point of the dividing apparatus and the time t6 a starting point of the dividing apparatus. Between times t5 and t6, the
  • the drive shaft performs a full rotation in a first direction of rotation between times t0 and t4. To carry out a further punching stroke, the drive shaft is then further rotated by a further full rotation in the first direction of rotation at the point in time t4.
  • the drive shaft is rotated at a lower rotational speed between times t1 and t3 than between times t0 and t1 and / or times t3 and t4. In this way, the time ts can be increased.
  • Fig. 7 shows corresponding to Fig. 6 temporal courses 616, 622 of the movement of the plunger and the workpiece according to one embodiment.
  • a drive optimization of the dividing apparatus has been made.
  • the drive shaft is stopped in the angular position corresponding to the upper turning point s4 and then moved at an increased speed to perform the punching operation. Due to the increased speed, the plunger reaches the upper reversal point to one in comparison to FIG. 6
  • FIG. 8 shows a schematic representation of different strokes 801, 803, 805 of the tappet according to an exemplary embodiment.
  • a lift stroke 801 is shown in which the ram is moved between an uppermost reversal point and a lowermost reversal point.
  • a punching stroke 803 is shown in which the plunger between an upper
  • a further punching stroke 805 is shown in which the plunger is moved between the upper reversal point and a lower reversal point. If the punching stroke 803 and the further punching stroke 805 are used to machine a workpiece, then two punching planes of a tool can be used.
  • FIG. 9 shows a flow chart of a method of driving a notching apparatus according to an embodiment. This can be a
  • the method includes a step 901 in which a drive shaft of the direct drive of the device is rotated to move the plunger. By turning, for example, a punching stroke or a LFShub be performed.
  • the step 901 may be repeatedly performed several times, wherein, for example, a rotation angle of the rotation of the drive shaft can be varied.
  • step 901 comprises a step 903 in which the drive shaft is rotated in one direction of rotation and additionally or alternatively a step 905 in which the drive shaft is rotated in the opposite direction of rotation.
  • a shuttle operation can be performed.
  • the method comprises a step 907 by the one rotation of the
  • a step 907 is performed so that the workpiece is rotated between two punching operations.
  • the method includes a step 909 whereby a distance between the subassembly axis and the punch axis is changed.
  • a suitable electrical travel signal can be provided to the device shown in FIG. 1 for the method.
  • At least some of the steps 901, 903, 905, 907, 909 can be repeatedly executed to process a workpiece in a suitable and also changing order. Control of the steps can be carried out, for example, using the control device described with reference to FIG. 3.
  • step 903 is performed to move the plunger from an upper reversal point to a lower reversal point back to the upper reversal point.
  • step 905 is carried out to move the plunger from the upper reversal point above the lowest reversal point back to the upper reversal point.
  • the step 907 and then again the steps 903, 905 can be executed.
  • step 903 is performed to move the plunger from an upper reversal point to a lower reversal point.
  • the step 905 is carried out to move the plunger 14 1 back from the lower reversal point to the upper reversal point.
  • the step 907 and then again the steps 903, 905 can be executed.
  • FIG. 10 shows a schematic representation of a tool cassette for a device for notching according to an exemplary embodiment.
  • the tool cassette comprises an upper tool part 230 and a lower tool part 1030.
  • the upper tool part 230 is fastened, for example, to the free end of the ram shown in FIG. 1 and the lower tool part 1030 is fastened to the table top shown in FIG.
  • the upper tool part 230 comprises at least one, for example two upper
  • the lower tool part 1030 comprises at least one, in this example two lower guide elements 1034.
  • the upper guide elements 1032 and the lower guide elements 1034 each have guide surfaces along which the mutually corresponding guide elements 1032, 1034 can slide together when the tool upper part 230 along the Punch axis 1 16 is moved.
  • the tool upper part 230 performs a punching stroke, when using a direct drive, for example in the form of a pendulum stroke.
  • the lengths of the guide surfaces with respect to the direction of the punching axis 16 are selected so that a guide length 1036 corresponds at least to the maximum punching stroke. In this way, the tool parts during the punching operation safely guided by the guide elements 1032, 1034.
  • the guide elements 1032, 1034 are detachably connected to the tool parts 230, 1030 and can be removed after installation of the toolbox in the device for notching. This facilitates the process of the workpiece between the tool parts 230, 1030.
  • Fig. 1 1 shows a schematic representation of the tool cassette described with reference to FIG. 10 for a device for notching according to a
  • the tool cassette is shown in a L—hub, in which the tool upper part 230 along the punch axis 1 16 further than in a punching of the
  • Tool base 1030 was moved away to allow feeding or removal of a workpiece 102.
  • the upper guide surfaces 1 132 of the upper guide elements 1032 and the lower guide surfaces 1 134 of the lower guide elements 1034 are provided with reference numerals.
  • the tool upper part 230 may have a maximum stroke 1 136.
  • the tool cassette can be opened at most wide.
  • the plunger is displaced so far into an upper reversal point, for example top dead center, that the guide elements 1032, 1034 no longer overlap and a continuous gap arises between the tool parts 230, 1030, which is greater than a thickness of the workpiece 102 , Will that be
  • Guide elements 1032, 1034 always stay immersed and ensure the necessary guidance for the small cutting gaps. After completion of the stamping process, the plunger is moved according to an embodiment in the top dead center, which corresponds to the LBAhub. As a result, the guide elements 1032, 1034 are moved apart, so that the device can be loaded when using an O-frame from behind over and under the separate guide elements 1032, 1034 over.
  • FIG. 12 shows a machined workpiece 1202 according to an exemplary embodiment which has been produced, for example, from a blank workpiece using the device described with reference to FIG.
  • the workpiece 1202 is a circular sheet in which through-holes have been punched.
  • the through holes are arranged along an outer ring and optionally along an inner ring. According to this embodiment, the through holes along the inner ring merely serve as air holes.
  • the workpiece 1202 is a sheet produced by intermittent punching.
  • FIG. 13 shows a schematic representation of a punching system 1300 according to an exemplary embodiment.
  • the punching system 1300 includes a raw workpiece preparation device 1310, a grooving device 100, and a tray 1312 for depositing a workpiece machined by the device 100, as shown by way of example in FIG. 12.
  • the punching system 1300 includes a raw workpiece preparation device 1310, a grooving device 100, and a tray 1312 for depositing a workpiece machined by the device 100, as shown by way of example in FIG. 12.
  • Deployment device 1310 the grooving devices 100 and the depositing device 1312 are arranged in series.
  • the device 100 is arranged between the supply device 1310 and the storage device 1312.
  • a traversing device 1316 is designed to move the workpiece by means of rectified traversing movements along a traverse axis 1320 from the supply device 1310 to the devices 100 and from the device 100 to the depositing device 1312.
  • Such an arrangement may be advantageously implemented using an O-frame device 100 as described with reference to FIG.
  • Such a conversion is facilitated by the described direct drive, by a sufficiently large Lforhub can be implemented in a simple manner by which the tool used can be moved apart completely, so that a moving workpiece between the upper and lower tool part can be moved by the traversing device 1316.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

La présente invention concerne un dispositif d'entraînement pour entraîner un dispositif (100) d'encochage, le dispositif (100) d'encochage comprenant un châssis ayant un support (104) et une pièce de tête (106) reliée au support (104), un poussoir (114) couplé à la pièce de tête (106) et mobile suivant un axe (116) du poinçon, s'étendant dans la direction longitudinale à un axe Y et éventuellement un dispositif (120) de division pour recevoir une pièce (102) devant être usinée. Le dispositif d'entraînement comprend un entraînement électrique direct (118) pour entraîner le poussoir (114).
EP18789380.5A 2017-10-18 2018-10-17 Dispositif d'entraînement, dispositif d'encochage et procédé d'entraînement d'un dispositif d'encochage Pending EP3697546A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017124335.6A DE102017124335A1 (de) 2017-10-18 2017-10-18 Antriebsvorrichtung, Vorrichtung zum Nutenstanzen und Verfahren zum Antreiben einer Vorrichtung zum Nutenstanzen
PCT/EP2018/078341 WO2019076950A1 (fr) 2017-10-18 2018-10-17 Dispositif d'entraînement, dispositif d'encochage et procédé d'entraînement d'un dispositif d'encochage

Publications (1)

Publication Number Publication Date
EP3697546A1 true EP3697546A1 (fr) 2020-08-26

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EP18789380.5A Pending EP3697546A1 (fr) 2017-10-18 2018-10-17 Dispositif d'entraînement, dispositif d'encochage et procédé d'entraînement d'un dispositif d'encochage

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US (1) US11364649B2 (fr)
EP (1) EP3697546A1 (fr)
CN (1) CN111246949B (fr)
DE (1) DE102017124335A1 (fr)
WO (1) WO2019076950A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017124334A1 (de) * 2017-10-18 2019-04-18 Hsf Automation Gmbh Vorrichtung zum Nutenstanzen und Stanzsystem

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891833C (de) * 1951-10-12 1953-10-01 Schuler L Ag Nutenstanzmaschine
FR1420534A (fr) * 1964-10-28 1965-12-10 Const De Presses Et De Machine Machine à encocher les segments de machines électriques
DE2911820C2 (de) * 1979-03-26 1982-02-25 Hans 4320 Hattingen Schoen Schnittschlagunterdrückung an hydraulischen Stanzpressen
DK146819C (da) 1981-03-03 1984-06-25 Bates Ventilsaekke Apparat til forsegling af ventilen i en ventilsaek med et klaebemiddel
JPS57204829U (fr) * 1981-06-19 1982-12-27
DE19537475A1 (de) 1995-10-07 1997-04-10 Schuler Pressen Gmbh & Co Nutenstanzmaschine
DE20301895U1 (de) * 2003-02-06 2004-06-09 Leiner Gmbh Stanzvorrichtung
EP1600223A1 (fr) * 2004-05-27 2005-11-30 Trumpf Werkzeugmaschinen GmbH + Co. KG Machine à poinçonner avec mécanisme de rotation et de levage entraíné par moteur
ES2452022T3 (es) * 2006-02-06 2014-03-31 Abb Research Ltd. Sistema de línea de prensas y método
DE102009029921B4 (de) * 2009-06-23 2012-06-06 Schuler Pressen Gmbh & Co. Kg Exzenterpressen-Direktantrieb
JP2011020132A (ja) * 2009-07-14 2011-02-03 Pascal Engineering Corp 積層鉄心製造装置
CN203184395U (zh) * 2013-01-04 2013-09-11 芜湖电工机械有限公司 电动螺旋冲槽机
JP6474164B2 (ja) 2013-03-12 2019-02-27 ヴァムコ・インターナショナル・インコーポレイテッド プレス機
JP2016022536A (ja) * 2014-07-16 2016-02-08 明広 日高 機構分割式無心インデックス装置
DE102014115240B4 (de) * 2014-10-20 2017-08-24 Schuler Pressen Gmbh Pressenantriebsvorrichtung für eine Presse und Presse mit Pressenantriebsvorrichtung
CN204773701U (zh) * 2015-05-25 2015-11-18 鄢文琼 一种盘形直线电机驱动的多连杆式压力机
CN205519169U (zh) * 2016-01-26 2016-08-31 西安井田亚迪铁心制造有限公司 一种单动力双模具冲压装置

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WO2019076950A1 (fr) 2019-04-25
CN111246949B (zh) 2022-07-26
CN111246949A (zh) 2020-06-05
US20200338775A1 (en) 2020-10-29
US11364649B2 (en) 2022-06-21
DE102017124335A1 (de) 2019-04-18

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