EP0929385B1 - Vorrichtung zur verformungsüberwachung eines schneidwerkzeuges - Google Patents

Vorrichtung zur verformungsüberwachung eines schneidwerkzeuges Download PDF

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Publication number
EP0929385B1
EP0929385B1 EP97943936A EP97943936A EP0929385B1 EP 0929385 B1 EP0929385 B1 EP 0929385B1 EP 97943936 A EP97943936 A EP 97943936A EP 97943936 A EP97943936 A EP 97943936A EP 0929385 B1 EP0929385 B1 EP 0929385B1
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EP
European Patent Office
Prior art keywords
profile
block
deformation
wire
cutting
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Expired - Lifetime
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EP97943936A
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English (en)
French (fr)
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EP0929385A1 (de
Inventor
Benoit Sagot-Duvauroux
Louis Besse
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Esox
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Esox
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    • 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
    • B26D3/006—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting blocs of plastic material
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/46—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having an endless band-knife or the like
    • B26D1/48—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having an endless band-knife or the like with tensioning 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
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/06—Severing by using heat
    • B26F3/08—Severing by using heat with heated members
    • B26F3/12—Severing by using heat with heated members with heated wires

Definitions

  • the invention relates to a device for cutting pieces of any shape in a block of material hot melt by means of a deformable resistive profile heated, preferably electrically, and kept in tension in an appropriate initial position, cutting by relative displacement of the workpiece and the profile.
  • This device is essentially made up of a wire held in the upper part at a fixed point and in part bass by a tracer. Tracer movement speed and / or the wire temperature is changed according to a computer program for acute angles of the profile. Such an installation requires a special mounting of the wire which limits the possibilities of cutting parts.
  • the aim of the present invention is therefore to propose a device for cutting pieces of any shape in a block of hot-melt material, this device to obtain an optimal quality of cut by means a very thin profile whose small section allows offer a high quality surface finish and a fine cutting line while working on a temperature which can be constant and which can be adjusted at a high pre-calibrated threshold.
  • Another object of the present invention is to provide a cutting device for obtaining pieces of complex shape, directly cut, without retouching adjustment and without state rectification operation of area.
  • Another object of the present invention is to provide a fully automated cutting device in which the operator's mission is facilitated, no adjustment not being necessary including in the case where we change material to be cut.
  • Another object of the invention is to propose a device where cutting time can be reduced maintaining the relative speed of movement of the block material and profile at maximum speed corresponding to a speed at which there is no deformation excessive profile or thickening of the cutting line.
  • the invention relates to a device according to claim 1.
  • the profile can be fully maintained at all times automatic in an optimal cutting position corresponding to a strain value or a range of previously selected deformation values while thus generating very good cutting precision and perfect surface condition of the cut piece.
  • the servo means include detection means in real-time and continuous position of at least one section of the profile, for example a point on the profile, to produce signals representative of the deformation of the streamlined, real-time and continuous of said signals to generate at least one output control signal, moving control means of the material block and / or of the profile, these control means being sensitive to said control signal to increase or reduce the relative movement speed of the block and profile.
  • control signal can be product for a value or a range of signal values profile deformation chosen by the operator in function of the cut to be made. It thus becomes possible voluntarily cause an arrow in the profile to allow the cutting of a block, especially at a cusp, or even modify acceleration or deceleration printed by the piece and / or the profile depending on the value of said signals of deformation of the profile compared to the value of reference deformation chosen. Such an installation thus allows obtaining a configurable arrow of the profile.
  • Devices for cutting parts from a block 11 of hot-melt material of any shape by means of a deformable resistive profile 4 present architectures diverse and varied.
  • the resistive profile 4 is a wire or a blade, possibly pre-bent, this is connected, at each of its ends or in the vicinity of the latter, to members 5, 6 ensuring the maintenance in tension of said wire, these organs 5, 6 for maintaining tension being carried by at least one support element 3 constituting at least one of the structural elements of the device.
  • the support element 3 depends on the rest of the structure defined by the general reference 1 of said device. Two examples of the element support 3 are provided below. So in the example shown in Figure 1, the support element 3 is a armature, preferably in the shape of an arc, this armature being mechanically coupled to the arm 8 of a robot manipulator 9 by means of an articulated link 19 like the shows figure 1.
  • This robot 9 rests on a structure 20 tray type on the ground.
  • This structure supports also a plate 10, possibly rotatable, on which is placed the block 11 of material to be cut, of shape any. So, thanks to such an architecture of device, it is possible, during cutting, to relatively move the profile 4 and the block 11 of material to cut.
  • the control elements of the turntable 10 or of the arm 8 of the robot 9 can, in a manner known per se, be constituted by motors controlled in operation by an appropriate control signal.
  • the use of a robot manipulator 9 provides a large number of movements of the support element 3. This is in particular represented in figure 1 by the arrows indicating the different possibilities of robot movement manipulator. This results in a possibility of cutting out pieces of any shape.
  • the speed of movement of the profile 4 thus obtained by the combination of these different movements can be regulated, as will be described below, due to the presence of means of the movement speed of the profile 4 at the position of at least a portion of the profile 4. It the same is true for the speed of rotation of the turntable 10 support of the block 11 of material to be cut to obtain a or several pieces of any shape.
  • the support element 3 is formed of two rails parallel verticals constituting the frame of the device and along which the organs 5, 6 move (FIG. 3) of tensioning of the profile.
  • These holding bodies in tension 5, 6 can be accommodated inside a box 2 shown in Figure 3 and which will be described below, this case 2 moving to slide along the constituent rails of the support element 3.
  • the housings 2, arranged on either side of the ends of the profile 4 move together along the rails vertical.
  • the displacement of the profile 4 along these two vertical rails ensure the Y cut.
  • These vertical rails are themselves movable along one or more rails horizontal.
  • the displacement of these rails along the rails horizontal ensures the X cut of the block 11 of material.
  • Block 11 is arranged on a tray 10, rotary or not, carried by a table. And arranged between the vertical rails carrying the members 5, 6 for holding in profile tension 4.
  • the members 5, 6 for maintaining the profile 4 in tension are, by example, consisting of two cylinders 5 arranged at each of ends of the profile 4, these jacks 5 being housed in guide bearings 7 arranged either inside a housing 2 removably mounted on said support element 3, such as shown in Figure 3, either directly in said support element 3, for example at the ends of the branches of the arc, in the case of a support element 3 constituted by an arc-shaped reinforcement of the type shown in Figure 1.
  • These cylinders 5 can be mounted either free movement in translation and stationary position adjustable in translation inside said guide bearings 7, or respectively to displacement free in translation and single stationary position the interior of said guide bearings 7.
  • the cylinder 5 is a cylinder to free movement in translation also called cylinder to automatic movement.
  • This jack 5 cooperates with an organ reminder 6 exerting continuous continuous tension adjustable, so that the elongation of the cutting line forming profile 4 is compensated by displacements of said actuator 5 with automatic movement between two extreme positions.
  • it is also arranged, in the vicinity of the end of the jack 5 receiving the cutting line 4, at least one pulley 13, preferably two pulleys 13, 14, acting as rollers turnbuckles. These pulleys 13, 14 fill several functions.
  • these pulleys 13, 14 are shaped to recognize the wire diameter so that as soon as a change in wire intervenes, this information is transmitted to processing means 18 which will be described below from so as to take into account the new configuration of the thread, especially when choosing the value (s) of wire deformation corresponding to optimal cutting.
  • These pulleys can also allow the supply of a current used to heat the wire.
  • the cooling means 12 are in this case constituted by a turbine arranged substantially in the axis wire inside said housing 2 as shown in the Figure 3.
  • a turbine arranged substantially in the axis wire inside said housing 2 as shown in the Figure 3.
  • At the other end of the wire (not shown in the Figure 3), it may for example be arranged a cylinder mechanical with adjustable stationary positions.
  • This cylinder is in this case consisting of a threaded axis carried by a bearing thermally insulating and non-conductive, for example in a case similar to that shown in FIG.
  • this axis comprising in the vicinity of its ends a shoulder and possibly a limit stop as well as a nut for adjusting the axial position.
  • other embodiments of said organs for maintaining the profile in tension can be envisaged. Thanks to these members for maintaining the profile in tension, accompanies the deformation of the profile which occurs at during the cutting of the part to be produced. This deformation of the profile results in a bending of the profile during part / profile contact, this bending generating an elongation of the profile during cutting. We thus ensures, thanks to these tension-maintaining members, an almost constant tension of the profile.
  • Profile 4 generally consists of a wire or a blade, possibly pre-curved, deformable.
  • the wires used are metallic wires, stainless steel or nickel / chrome alloy with a very small cross-section, preferably between 40 and 200 microns. Nature and the dimensions of the wire are chosen according to the heating temperature and the material to be cut.
  • the wire is heated by suitable heating means. Generally, this wire is heated by the passage of a current supplied by a dimmer, this dimmer delivering by example a voltage of 220 Volts at 50 Hertz. As shown in Figure 3, these heating means can also be integrated in a housing 2 mounted so removable on said support element 3 of the structure of installation.
  • the wire heating temperature depending on the melting temperature of the material to cut, is generally in the range [200 - 600 ° C]. This temperature can be kept constant from makes presence in the installation of means of the relative speed of movement of the profile and block 11 of material to be cut in position instant of at least a portion of the profile.
  • block 11 and section 4 have a relative displacement, that is to say that the block 11 and / or the section 4 are displaced.
  • the profile 4 is engaged in the block 11 of material and generates, due to its temperature, a melting of the material constituting the block 11.
  • This commitment also generates, due to the resistance opposed by the block Il to the profile, a deformation of the profiled generally resulting in a sagging of the profile.
  • This decline generates the disadvantages previously cited. To eliminate this sag, it should reduce the relative speed of movement of the block 11 and profile 4.
  • the means control systems include time detection means real and continuous position of a portion of the profile 4 to produce signals representative of the deformation of profile 4, time processing means real and continuous said signals to generate output at least one control signal, control means in displacement of the block 11 of material and / or of the profile, these control means being sensitive to said control signal to increase or decrease the relative movement speed block 11 and profile 4.
  • Detection means can affect a large number of forms.
  • the simplest means of detection may be consisting of an all or nothing sensor, such as an eyelet electrically conductive contactor disposed around the profile, preferably at one end of this latest.
  • an eyelet electrically conductive contactor disposed around the profile, preferably at one end of this latest.
  • the contactor eyelet comes into contact with an element also circular conductor incorporated into the frame of said installation thus generating a signal capable of being processed to generate an appropriate control signal to which displacement control means of the block 11 and / or the section 4 described above are sensitive.
  • this type of detection means although applicable in the present invention, lack of precision. In particular, it does not allow a lower bound to be determined which would correspond to an almost absence of deformation of the wire.
  • a preferred solution therefore consists in using means real-time and continuous position detection at least a portion of the profile 4 which are made of a transmitter-receiver assembly.
  • the transmitter is made up at least by profile 4 traversed by a wave electromagnetic while the receiver consists of at least one sensor 15, placed in the vicinity of said profile, the amplitude of the signal or signals supplied by said receiver being proportional to the transmitter-receiver distance.
  • the output of the sensor 15 varies linearly when profile 4 is moved.
  • An example of such a sensor is shown in Figures 2A and 2B.
  • the senor is formed by at least four plates 16A, 16B, 16C, 16D conductive opposite two by two and arranged around said profile 4, preferably at least one of ends of the latter in detection zone Z1 supra.
  • These conductive plates 16A, 16B, 16C, 16D such as copper plates, transmit signals via a wire, preferably shielded, to a electronic card 17 which, itself, after amplification and filtration, transmits a signal to means of appropriate processing, corresponding signal linearly to the deviation of the profile.
  • These means of processing signals can be installed for example on a microcomputer, as shown in Figure 1, driving the machine or on the robot control cabinet.
  • These means 18 in turn generate a control signal to which the movement control means of block 11 or profile 4 are sensitive.
  • the design of the detection means is based on the law of variation of the power of an electromagnetic wave propagating in a vacuum which varies in 1 / R 2 , R being the transmitter / receiver distance.
  • the profile forming a transmitter or more particularly a transmitting antenna, is connected to electronics which supplies a carrier wave, such as a sinusoidal signal of frequency 100 kHz, on said wire.
  • a carrier wave such as a sinusoidal signal of frequency 100 kHz
  • FIG. 2A there are shown signals obtained from four plates when the profile 4 is in the rest position, that is to say a position in which the wire is for example arranged substantially in the center of the four plates.
  • FIG. 2B on the contrary, making a cut has generated a deformation of the wire, resulting in a displacement of a portion of the profile in the direction of bringing the wire closer to two plates. This results in a variation of the signals representative of the deformation of the profile produced by each of the plates as shown in the associated signal diagrams.
  • the means 18 for processing said signals generate a control signal inducing at the level of the means of control, such as a stepping motor or the like described above, an increase or a reduction in the relative speed of movement of the block 11 of material and of the profile 4, for example, in the second case, by reduction of the speed of displacement of the support element 3.
  • the control signal produced by said processing means 18 is emitted when the measured and / or calculated value of the signals representative of the deformation of the profile 4 is located outside a predetermined range of values.
  • the calculation of the reduction and / or increase in the speed can be done in different ways. This calculation is a function of the complexity of the rest of installation. So, for example, in the case of a machine comprising a manipulator robot, the means of speed regulation will need to take into account other characteristics of said robot. To calculate the speed appropriate, these means preferentially use well-known methods in automation, such as integral and derivative proportional action correction (PID) or simpler but effective methods such as the one described below.
  • PID integral and derivative proportional action correction
  • This ⁇ is added to the instantaneous speed V to obtain a speed V1 .
  • the value V1 then constitutes the new relative speed of movement of the block 11 and of the profile 4.
  • a control signal is therefore sent to the movement control means of the block 11 and / or of the profile 4 in order to modify the speed.
  • the speed can thus be changed periodically with each new cycle of the control loop. This periodicity is of the order of 200 milliseconds. It can be seen that, in such a detection system, the portion of the profile 4, the position of which is detected, is reduced to a point.
  • the sensor 15 shown schematically in the figures 2A and 2B is shown housed inside the housing 2 in Figure 3.
  • the removable housing 2 therefore incorporates, in in this case, both the heating means of the profile, the cooling means 12 of the profile, the members 5 and 6 to keep the profile in tension as well as some of the means for controlling the speed of movement relative of the profile and the block of material to be cut instantaneous position of at least a portion of the profile, in in particular the sensor 15 and the electronic card 17.
  • the maintenance becomes particularly easy. he suffice, in the event of a problem, to remove said casing 2 from support element 3 and replace it with a new one housing. The machine is thus not immobilized during the repair of said elements.
  • the air flow required when the profile is cooled is between 110 and 180 liters / minute.
  • the initial thread tension is generally chosen between 300 and 700 g.
  • the minimum and maximum limits allowable deformation of the wire can be fixed as example at 0.3 mm deviation at 30 cm from the center of the sensor for the lower terminal and 0.5 mm from deviation 30 cm from the center of the sensor for the terminal higher.
  • these terminals can be modified, possibly by reprogramming, each time new cut. It is thus possible to cut out parts with a permissible deflection of the profile very important, especially when it is necessary to cut back areas.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (8)

  1. Vorrichtung zum Ausschneiden von Teilen beliebiger Form aus einem Block (11) aus wärmeschmelzbarem Material beliebiger Form mittels eines resistiven, elastischen Profilstahls (4), beispielsweise eines Drahtes, der elektrisch beheizt ist und in einer geeigneten Ausgangsposition unter Zugspannung gehalten wird, wobei diese Vorrichtung, bei der Materialblock (11) und Profilstahl (4) zu einer Relativbewegung angeregt werden, in deren Verlauf der Block (11) dem Profilstahl (4) einen Widerstand entgegensetzt, der die Tendenz hat, die Verformung des Profilstahls (4) in Bezug auf seine Ausgangsverformung zu verändern, Mittel zum Regeln der Geschwindigkeit der Relativbewegung des Profilstahls (4) und des auszuschneidenden Materialblocks (11) umfasst, dadurch gekennzeichnet, dass die Regelungsmittel, die die Relativgeschwindigkeit des Profilstahls (4) und des auszuschneidenden Materialblocks (11) an der Momentanposition wenigstens eines Abschnittes des Profilstahls (4) regeln, um dem Profilstahl (4) zu jedem Zeitpunkt eine optimale Verformung zu verleihen, die der im vorhinein gewählten Ausschneideposition entspricht, Mittel zum fortlaufenden Erfassen in Echtzeit der Position wenigstens eines Abschnittes des Profilstahls (4), zum Beispiel eines Punktes des Profilstahls, um Signale zu erzeugen, welche die Verformung des Profilstahls (4) darstellen, Mittel (18) zum fortlaufenden Verarbeiten in Echtzeit der Signale, um am Ausgang wenigstens ein Steuersignal zu erzeugen, und Mittel zum Steuern der Verschiebung des Materialblocks (11) und/oder des Profilstahls (4) enthalten, wobei diese Steuermittel für das Steuersignal empfindlich sind, um die Geschwindigkeit der Relativbewegung des Blocks (11) und des Profilstahls (4) zu erhöhen oder zu verringern.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das von den Verarbeitungsmitteln (18) erzeugte Steuersignal ausgesendet wird, wenn der gemessene und/oder berechnete Wert der Signale, welche die Verformung des Profilstahls (4) darstellen, außerhalb eines vorgegebenen Wertebereiches liegt.
  3. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Mittel zum fortlaufenden Erfassen in Echtzeit der Position wenigstens eines Abschnittes des Profilstahls (4) durch eine Sender-Empfänger-Baugruppe gebildet sind, wobei der Sender durch wenigstens den Profilstahl (4) gebildet ist, der von einer elektromagnetischen Welle durchflossen ist, während der Empfänger durch wenigstens einen Sensor (15) gebildet ist, der in der Nähe des Profilstahls (4) angeordnet ist, wobei die Amplitude des oder der Signale, die von dem Empfänger geliefert werden, proportional zum Abstand Sender (4) - Empfänger (15) ist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Sensor (15) aus wenigstens vier leitfähigen Platten (16A, 16B, 16C, 16D) gebildet ist, die sich paarweise gegenüberliegen und um den Profilstahl (4) herum angeordnet sind, vorzugsweise wenigstens an einem der Enden dieses letzteren.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Profilstahl (4) ein Schneidedraht ist, der an jedem seiner Enden oder in der Nähe dieser letzteren mit Mitteln (5, 6) verbunden ist, die gewährleisten, dass der Draht unter Zugspannung gehalten wird, wobei diese Zugspannungs-Halte-Mittel (5, 6) von wenigstens einem Halteelement (3) getragen sind, das wenigstens eines der Struktur-Elemente der Vorrichtung darstellt.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das Halteelement (3) ein Beschlag, vorzugsweise in Form eines Bogens, ist, wobei dieser Beschlag mechanisch an den Arm (8) eines Roboter-Manipulators (9) mittels einer Gelenkverbindung (19) gekuppelt ist.
  7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das Halteelement (3) aus zwei senkrechten Schienen gebildet ist, die den Rahmen der Vorrichtung bilden und entlang derer sich die Zugspannungs-Halte-Mittel (5, 6) des Profilstahls verlagern.
  8. Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Zugspannungs-Halte-Mittel (5, 6) des Profilstahls (4) im Inneren eines Gehäuses (2) eingebaut sind, das zudem wenigstens einen Teil der Regelungsmittel der Geschwindigkeit der Relativbewegung des Profilstahls (4) und des auszuschneidenden Materialblocks (11) an der Momentanposition wenigstens eines Abschnittes des Profilstahls, Mittel (12) zum Kühlen des Profilstahls (4) und Mittel zum Heizen des Profilstahls (4) einschließt, wobei das Gehäuse (2) lösbar an dem Halteelement (3) befestigt ist.
EP97943936A 1996-10-03 1997-10-03 Vorrichtung zur verformungsüberwachung eines schneidwerkzeuges Expired - Lifetime EP0929385B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9612051 1996-10-03
FR9612051A FR2754208B1 (fr) 1996-10-03 1996-10-03 Dispositif pour la decoupe de pieces de forme quelconque
PCT/FR1997/001755 WO1998014311A1 (fr) 1996-10-03 1997-10-03 Dispositif pour la decoupe de pieces de forme quelconque

Publications (2)

Publication Number Publication Date
EP0929385A1 EP0929385A1 (de) 1999-07-21
EP0929385B1 true EP0929385B1 (de) 2004-06-23

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EP97943936A Expired - Lifetime EP0929385B1 (de) 1996-10-03 1997-10-03 Vorrichtung zur verformungsüberwachung eines schneidwerkzeuges

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EP (1) EP0929385B1 (de)
AU (1) AU4559797A (de)
DE (1) DE69729642D1 (de)
FR (1) FR2754208B1 (de)
WO (1) WO1998014311A1 (de)

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AU4559797A (en) 1998-04-24
FR2754208A1 (fr) 1998-04-10
DE69729642D1 (de) 2004-07-29
EP0929385A1 (de) 1999-07-21
FR2754208B1 (fr) 1998-12-11
WO1998014311A1 (fr) 1998-04-09

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