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WO2009106060A1 - Procédé de coupe destiné à réduire un impact de coupe - Google Patents

Procédé de coupe destiné à réduire un impact de coupe Download PDF

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Publication number
WO2009106060A1
WO2009106060A1 PCT/DE2009/000263 DE2009000263W WO2009106060A1 WO 2009106060 A1 WO2009106060 A1 WO 2009106060A1 DE 2009000263 W DE2009000263 W DE 2009000263W WO 2009106060 A1 WO2009106060 A1 WO 2009106060A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
damping device
linear motor
impact damping
tool
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.)
Ceased
Application number
PCT/DE2009/000263
Other languages
German (de)
English (en)
Inventor
Bernd-Arno Behrens
Olaf Marthiens
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.)
Leibniz Universitaet Hannover
Original Assignee
Leibniz Universitaet Hannover
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 Leibniz Universitaet Hannover filed Critical Leibniz Universitaet Hannover
Priority to EP09714241A priority Critical patent/EP2250004A1/fr
Publication of WO2009106060A1 publication Critical patent/WO2009106060A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0043—Details, accessories or auxiliary or special operations not otherwise provided for the cutting machine comprising a linear motor
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting

Definitions

  • the invention relates to a cutting method for reducing a cutting stroke of a cutting machine having a cutting tool.
  • the invention relates to a cutting machine with a crank drive.
  • Cutting methods such as shear cutting or sheet punching, are typically performed with a cutting machine having a two-part cutting tool, namely an upper tool and a lower tool.
  • the upper tool is moved by a drive with a lifting movement and leads to a movement on the lower tool from.
  • the force exerted by the upper tool on the workpiece increases, that is, the cutting machine springs up, until the material of the workpiece abruptly fails along a cutting line and the cut is performed.
  • the invention has for its object to dampen the oscillations of the cutting tool triggered by the cutting impact as efficiently as possible and with little equipment.
  • the invention solves the problem by a cutting method for reducing a cutting stroke of a cutting machine comprising a cutting tool, with the steps of moving a lower tool and an upper tool of the cutting tool, between which a sheet is arranged, towards each other by means of a drive comprising a crank , a record sens a Thomasschlagbeginns and energizing at least one linear motor so that a restoring force is applied to the cutting tool, which counteracts an induced by the cutting shock oscillations of the cutting tool, after cutting start of shock.
  • the invention solves the problem by a crank drive cutting machine having a linear motor arranged to act on a cutting tool of the cutting machine, a cutting stroke start detecting device for detecting a cutting stroke start, and an electric control suitable for carrying out a method according to the invention.
  • the invention also solves the problem by using a linear electric motor to damp the cutting stroke of a cutting machine.
  • An advantage of the invention is that already then the oscillation of the cutting tool counteracting restoring force can be applied to the cutting tool, for example, when the upper tool and the lower tool relative to each other substantially not yet move.
  • the cutting machine is spring-loaded.
  • the upper tool is greatly accelerated toward the lower tool.
  • the relative speed between upper and lower tool is still very low. The acceleration, however, considerable.
  • the damping force depends on a relative speed between the upper and lower tools or on a reivativ position of the upper and lower tool relative to each other. From the motion characteristic of the upper tool relative to the lower tool, it follows that initially the acceleration assumes a large value and only then does the relative speed.
  • the method according to the invention can The oscillation of the cutting tool triggered by the cutting impact, in particular the oscillation of an upper tool to a lower tool, significantly better attenuates than the method according to the prior art.
  • the damping of cutting stroke can be quickly adapted to changing boundary conditions. If, for example, the mass of the upper tool or the material of sheet metal to be cut changes, it is sufficient to adapt the time profile of the energization of the linear motor in order to again obtain the optimum damping.
  • a cutting tool is understood in particular as a two-part or multi-part cutting tool which comprises an upper tool and a lower tool.
  • the method according to the invention comprises the steps of detecting a cutting tool position along a stroke path of the cutting tool, energizing the at least one linear motor so that the cutting tool applies a biasing force against a workpiece to be cut, before the cutting start and a release of the biasing force immediately after the start of cutting. This ensures that the force necessary for cutting the workpiece is applied to a certain extent by the linear motor.
  • the cutting machine springs less, and the cutting stroke can be damped even faster.
  • the method according to the invention particularly preferably comprises the step of applying the cutting force to the cutting tool after releasing the biasing force.
  • the beginning of the cutting stroke can be detected particularly precisely if the detection of the beginning of the cutting stroke involves detecting an acceleration of the cutting tool, in particular of an upper tool. As stated above, the acceleration is large immediately after the beginning of the cutting stroke, but the relative speed between the upper tool and the lower tool is low. A high acceleration is therefore a clear and easily measurable indication of the beginning of cutting stroke.
  • the linear motor is energized so that it always applies a restoring force on the cutting tool or a part of the cutting tool, such as the upper tool or the lower tool, which is temporally variable and a phase shift relative to the time-varying vibration of the cutting tool, or of the upper tool relative to the lower tool, having.
  • the phase shift is substantially at 180 °. This means that it is possible, but not necessary, for the phase shift to lie within the control accuracy at 180 °. For example, it is sufficient if the phase shift is between 170 ° and 190 °.
  • the cutting impact may occur at different points along a cutting line at different times. This results in a slight tilting of the cutting tool or of the upper tool relative to the lower tool. This results in an oscillation of the cutting tool or an upper and / or lower tool about a pivot axis, which also leads to wear.
  • This oscillation is avoided if the detection of the cutting start of impact and the energizing of the at least one linear motor is carried out at two, in particular at four, locations, wherein the at least two locations are arranged in particular at corners of the cutting tool.
  • the restoring force also sets earlier, at a point where the cutting stroke used to be earlier, so that the oscillations around the pivot axis are significantly reduced.
  • the method comprises the steps of detecting an angular position of the cutting tool and energizing the at least one linear motor so that the angular position of the cutting tool approaches a desired angular position.
  • the desired angular position causes a part of the cutting tool to touch the workpiece earlier than other parts of the cutting tool.
  • the desired angular position is selected such that the cutting impact occurs along the cutting line at substantially the same time.
  • the angular position is understood in particular to mean the orientation of the cutting tool relative to a plane in which the workpiece and / or the lower tool is arranged.
  • a cutting impact damping device preferably has a double-comb linear motor.
  • a double-comb linear motor is understood in particular to mean a linear motor in which two oppositely arranged partial primary parts surround a secondary part having permanent magnets. Double comb linear motors are short in construction and therefore well suited for short-stroke cutting machines.
  • both primary parts share all permanent magnets.
  • each north pole of a permanent magnet interacts with one of the partial primary parts, whereas the south pole of the same permanent magnet interacts with the other primary partial part.
  • the secondary part has a matrix of fiber-reinforced plastic, in which the permanent magnets are embedded.
  • Fiber-reinforced plastic has a high strength and keeps the permanent magnets safely in place. At the same time the plastic is not electrically conductive, so that no eddy currents are induced, which could affect the dynamics of the linear motor.
  • a particularly durable and at the same time robust guidance is obtained when the secondary part has on both sides a guide rail, by means of which the secondary part is guided centrally between the two partial primary parts.
  • the secondary part is guided by a guide carriage on the two partial primary parts.
  • the attraction forces of the primary parts add up to zero, so that the attractive forces exerted by the two sub-primary parts respectively on the secondary part are completely absorbed by a connection of the two sub-primary parts. Since consequently no forces acting perpendicular to the sub-primary parts have to be absorbed at the secondary part, the guidance of the secondary part is particularly wear-resistant.
  • a particularly good magnetic closure and at the same time a magnetic shielding are obtained when the guiding machine is ferromagnetic.
  • a distance measuring sensor in particular a magnetic distance measuring sensor, is arranged for measuring a position of the secondary part relative to the primary part.
  • the magnetic displacement sensor delivers reliable measured values since the ferromagnetic guide rail effects a magnetic closure, so that only a weak stray magnetic field exists outside the guide rail.
  • a particularly dynamic linear motor is obtained when the secondary part has a plurality of teeth and has a toothed head winding with an open groove.
  • a magnetic division of the permanent magnets substantially corresponds to 6/7 of the pole pitch of the teeth of the secondary part. To this Way, a particularly large force can be applied to the cutting tool.
  • An independent subject of the present invention is an electromagnetic linear motor in which the permanent magnets of the secondary part are embedded in a non-electrically conductive medium.
  • the electrically non-conductive medium may be, for example, a plastic, in particular a fiber-reinforced plastic.
  • the fiber-reinforced plastic is in particular a glass fiber or carbon fiber reinforced plastic.
  • the electrically non-conductive material is used in particular for eddy current reduction.
  • the primary part of the linear motor comprises electromagnets, which in turn have laminated cores in the form of U-profiles. In this case, a maximum large slot opening is preferably used.
  • a copper fill factor of the windings of the primary part is preferably more than 40%, in particular more than 55%.
  • a particularly easy to manufacture linear motor is obtained when the copper coils are embedded in an electrically non-conductive medium, in particular when the coils are glued with impregnating resin to form coils and inserted in the bonded state in the yoke.
  • FIG. 1 shows a schematic perspective view of a cutting machine according to the invention
  • FIG. 2 shows a perspective view of a cutting impact damping device according to the invention, which is connected to a table and a plunger of a cutting machine according to the invention
  • FIG. 3 shows a schematic cross section through the cutting impact damping device according to the invention from FIG. 2,
  • FIG. 4 shows a laminated core of a primary part of a linear motor of the cutting impact damping device according to FIG. 2, the laminated core being shown without coils,
  • FIG. 5 shows the laminated core according to FIG. 4 with coils
  • FIG. 6 shows a perspective view of the cutting impact damping device according to FIG. 2,
  • FIG. 7 shows an exploded view of the cutting impact damping device according to FIG. 6 and FIG. 7
  • FIG. 8 shows a schematic diagram of the cutting impact damping device according to the invention.
  • Figure 1 shows a cutting machine 10 according to the invention comprising a frame 12 and a drive 14 which moves a plunger 16 with a lifting movement up and down.
  • the drive 14 can be any desired drive and in the present case comprises a crankshaft 18, a flywheel 20 and an electric motor. Motor 22 for driving the crankshaft 18.
  • the frame 12 includes a table 24, in which a lower tool 26 is inserted. The lower tool 26 and the upper tool 28 are part of a cutting tool 30.
  • the upper tool 28 has a punch 32, which has a smaller outer diameter by a small amount, than an inner diameter of a recess 25 in the lower tool 26, which is also referred to as a die.
  • the cutting machine 10 is fed by a feed sheet, not shown, which then gets between upper tool 28 and lower tool 26 and cut out according to the shape of the punch 32. The result is the desired slug.
  • FIG. 2 shows the cutting tool 30 according to FIG. 1 and the plunger 16.
  • a cutting impact damping device 36 Disposed between the plunger 16 and the table 24 is a cutting impact damping device 36 which has a synchronous, double-planar linear motor 38 and a first fastening device 40 for fastening the linear motor 38 to the plunger 16 and a second attachment device 42 for attaching the linear motor 38 to the table 24.
  • the plunger 16 moves along a linear stroke path, which is indicated by the arrow P.
  • FIG. 3 shows a schematic cross section through the linear motor 38. It can be seen that the secondary part 46 has a large number of permanent magnets 48.1, 48.2,... 48.16 which are in alternating polarities with respect to one another.
  • the primary part 44 comprises a first sub-primary part 50.1 and a second sub-primary part 50.2, which are constructed essentially mirror-symmetrically with respect to one another and lie opposite one another with respect to a longitudinal axis L of the secondary part 46. Because of their symmetrical structure, only the partial primary part 50.1 will be described in more detail below.
  • the permanent magnets 48.1 ... 48.16 are arranged with a magnet pitch ⁇ M to each other, which indicates the distance between two upper edges of adjacent permanent magnets.
  • the first part primary part 50.1 has a leafed laminated core 52.1, which has teeth 54.1 ... 54.6.
  • the first tooth 54.1 is surrounded by a coil + U.
  • the second tooth 54.2 is surrounded by a coil -U
  • the third tooth 54.3 is surrounded by a coil -V
  • the fourth tooth 54.4 is surrounded by a coil + V
  • the fifth tooth 54.5 is from a coil + W
  • the sixth tooth is surrounded by a coil -W.
  • Each of the coils thus surrounds exactly one of the teeth 54.
  • FIG. 4 shows the laminated core 52.1 without coils. It can be seen that between each two teeth a groove 56.1 ... 56.5 is formed.
  • the grooves 56 have on their sides facing the secondary part, that is, in Figure 4 on its upper side, a slot opening N, which is substantially as large as a Kehlungsbreite K at the bottom of the grooves. Although this reduces the power density of the linear motor, at the same time its inductance also decreases. It is obtained a particularly fast responding linear motor, which is advantageous for the present purpose.
  • the laminated core 52.1 has peripheral teeth 54.7, 54.8, which each form a groove 56-.6 or 56.7 with the first tooth 54.1 and the sixth tooth 54.6, which correspond in their geometrical dimensions to the remaining grooves 56.1... 56.5. All grooves 56 have the same cross sections.
  • FIG. 4 shows that a longitudinal bore 58.1... 58.4 is introduced into the laminated core 52.1 centrally between the next but two grooves centrally below the groove.
  • a first longitudinal bore 58.1 is located between the first tooth 54.1 and the first marginal tooth 54.7.
  • the second longitudinal bore 58.2 is located between the second tooth and the third tooth below the groove 56.2
  • the third longitudinal bore 58.3 is located below the groove 56.4
  • the fourth longitudinal bore is disposed below the groove 56.7.
  • the laminated core 52.1 of the linear motor comprises centrally below grooves between teeth of the primary part a longitudinal bore for suppressing parasitic magnetic field lines. This ensures that the magnetic field lines of a coil hardly scatter in adjacent teeth.
  • FIG. 5 shows the laminated core 52.1 with the associated coils.
  • the coils are first wound independently of the sheet metal part 52.1 and fixed with impregnating resin. Subsequently, the coils + U, -U, -V, + V, + W, -W are pushed in the cured state via the associated teeth 54.1 ... 54.6 and fixed.
  • This procedure achieves a copper fill factor of over 50%, from which a high power density with low inductance follows.
  • For winding the coils for example, a round wire with a diameter of 1 mm to 2 mm is used.
  • a pole coverage ratio a - describes the ratio of the magnetic spectrum
  • the pile coverage ratio is 0.80 to 0.90.
  • An approximately sinusoidal profile of the flux density B y in the air gap between the primary part and the secondary part is then achieved as a function of the position in the longitudinal direction L of the secondary part (compare FIG. 3). The position of the secondary part relative to the primary part in the longitudinal direction L corresponds to an x-coordinate.
  • FIG. 6 shows the cutting impact damping device 36 in a perspective view. It can be seen that the first part primary part 50.1 and the second part primary part 50.2 are connected on both sides via a respective connection element 60.1 or 60.2. Centrally between the sub-primary parts 50.1, 50.2, the secondary part 46 is arranged, which has on both sides of the permanent magnet 48 each have a T-shaped guide rail 62.1, 62.2. The guide rails 62.1, 62.2 have on their respective connecting element
  • FIG. 7 shows an exploded view of the linear motor 38. It can be seen that the permanent magnets 48.1... 48.12 are embedded in a matrix 66 of a nonconductor, namely of glass fiber reinforced plastic. Each permanent magnet has two broad sides, which are directly facing one of the two sub-primary parts 50.1 and 50.2. In other words, the two sub-primary parts 50.1, 50.2 share the permanent magnets.
  • the linear motor 38 is also referred to as a double comb linear motor.
  • screws 68.1 ... 68.4 engage through the longitudinal bores 58.1 ... 58.4 and are fastened to partial elements 70.1, 70.2 of the connecting element 60.1.
  • a displacement sensor 72 Disposed laterally outside the first guide rail 62.1 is a displacement sensor 72, which detects the x-position of the secondary part 46 relative to the primary part 44 and forwards it to a schematically drawn electrical control 46.
  • the electrical control 74 is also in contact with an acceleration sensor 76 schematically drawn in FIG. 2, which detects an acceleration of the plunger 16 and thus the upper tool.
  • the electrical controller 74 is also in contact with a servo inverter 78, which operates as a frequency converter and which is connected via not shown electrical lines with the coils + U, -U, + V, -V, + W, -W in contact and these energized.
  • the servo inverter 78 has a total power of 11, 2 kW.
  • the plunger 16 (FIG. 1) is brought into a lifting movement along a repetitive lifting path. If the acceleration sensor 76 detects an acceleration a, which is oriented towards the table 24 or the lower tool 26 and exceeds a threshold value a s , the corresponding time is set as the cutting stroke beginning t start.
  • the electric controller 74 controls the servo inverter 78 to energize the coils + U 1 -U 1 + V, -V, + W, -W with a coil current Istr a ng (t), so that a restoring force FR QC kstei ⁇ (t) between the primary part 44 ( Figure 2) and the secondary part (46) is formed.
  • the restoring force F R ck kst e i ⁇ (t) is chosen so that it an oscillation .DELTA.x (t) of the plunger 16, ie the difference between the current position x (t) of the plunger 16 relative to its load-free lifting path Xia stf r e i (t), counteracts.
  • the load-free stroke Xiastlitis (t) is that path along the x-axis, which describes the plunger 16 as a function of time, when no workpiece is machined and consequently also no cutting stroke ensteht.
  • the application time of the servo inverter 78 is 380 ⁇ s with a time frame of 200 ⁇ s.
  • a linear motor which can apply a maximum restoring force F rubste i ⁇ , max of more than 2 000 N, in particular more than 3 000 N.
  • the time within which this maximum restoring force is achieved is preferably less than 3 ms.
  • the regulation of the linear motor 38 takes place in real time.
  • FIG. 8 shows a schematic view of the dimensions of the cutting impact damping device 36 according to the invention.
  • a primary part height of the partial primary parts 50.1, 50.2 is preferably less than 500 mm.
  • a width of the partial primary parts is preferably less than 200 mm. Particularly favorable is a travel of less than 150 mm and more than 50 mm.
  • Linear motor (38) so that the cutting tool (30) applies a biasing force (Fvorspan ⁇ ) against a workpiece to be cut, and
  • Cutting method characterized by the steps (iv) after the release of the biasing force (F bias) energizing the at least one linear motor (38) so that the restoring force (FRückstei ⁇ (t)) is applied to the cutting tool (30).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forests & Forestry (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Control Of Linear Motors (AREA)
  • Press Drives And Press Lines (AREA)
  • Turning (AREA)

Abstract

L'invention concerne un procédé de coupe destiné à réduire un impact de coupe d'une machine de découpage (10) qui présente un outil de coupe (30). Le procédé est caractérisé en ce qu'il comprend les étapes suivantes : (a) détection d'un début d'impact de coupe (t début), et (b) alimentation d'au moins un moteur linéaire (38), de telle façon qu'une force de rappel (F rappel (t)) soit appliquée sur l'outil de coupe (30), ladite force de rappel s'opposant à une oscillation (?x(t)) de l'outil de coupe (30) déclenchée par l'impact de coupe.
PCT/DE2009/000263 2008-02-25 2009-02-24 Procédé de coupe destiné à réduire un impact de coupe Ceased WO2009106060A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09714241A EP2250004A1 (fr) 2008-02-25 2009-02-24 Procédé de coupe destiné à réduire un impact de coupe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008011024.8 2008-02-25
DE200810011024 DE102008011024B4 (de) 2008-02-25 2008-02-25 Schneidverfahren zum Vermindern eines Schnittschlags und Schneidmaschine mit einem Kurbelantrieb zur Durchführung dieses Verfahrens

Publications (1)

Publication Number Publication Date
WO2009106060A1 true WO2009106060A1 (fr) 2009-09-03

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PCT/DE2009/000263 Ceased WO2009106060A1 (fr) 2008-02-25 2009-02-24 Procédé de coupe destiné à réduire un impact de coupe

Country Status (3)

Country Link
EP (1) EP2250004A1 (fr)
DE (2) DE102008011024B4 (fr)
WO (1) WO2009106060A1 (fr)

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DE102017107231B3 (de) 2017-04-04 2018-05-24 Aweba Werkzeugbau Gmbh Aue Schwingungstilgende Transfereinrichtung
CN119681984A (zh) * 2025-02-25 2025-03-25 济南冠泽医疗器材有限公司 一种医用胶片的裁切系统

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DE102008011024B4 (de) 2008-02-25 2010-01-28 Gottfried Wilhelm Leibniz Universität Hannover Schneidverfahren zum Vermindern eines Schnittschlags und Schneidmaschine mit einem Kurbelantrieb zur Durchführung dieses Verfahrens
WO2011023172A1 (fr) 2009-08-25 2011-03-03 Gottfried Wilhelm Leibniz Universität Hannover Procede de decoupe pour reduire un impact de decoupage
DE102011122492A1 (de) * 2011-12-29 2013-07-04 Gottfried Wilhelm Leibniz Universität Hannover Presse zur Werkstückbearbeitung
DE102015106859B4 (de) 2015-05-04 2018-06-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Scherschneiden hochfester Werkstoffe und Schneidwerkzeuganordnung
KR101882644B1 (ko) 2015-05-27 2018-07-26 미쓰비시덴키 가부시키가이샤 전동기

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