EP3530359A1 - Dispositif et procédé d'usinage de pièces à usiner ou d'objets - Google Patents

Dispositif et procédé d'usinage de pièces à usiner ou d'objets Download PDF

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Publication number
EP3530359A1
EP3530359A1 EP18158630.6A EP18158630A EP3530359A1 EP 3530359 A1 EP3530359 A1 EP 3530359A1 EP 18158630 A EP18158630 A EP 18158630A EP 3530359 A1 EP3530359 A1 EP 3530359A1
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EP
European Patent Office
Prior art keywords
tool
vibration
workpiece
vibrator
vibrations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18158630.6A
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German (de)
English (en)
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EP3530359B1 (fr
Inventor
Peter Solenthaler
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Telsonic Holding AG
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Telsonic Holding AG
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Filing date
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Priority to EP18158630.6A priority Critical patent/EP3530359B1/fr
Publication of EP3530359A1 publication Critical patent/EP3530359A1/fr
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Publication of EP3530359B1 publication Critical patent/EP3530359B1/fr
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B3/02Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency

Definitions

  • the invention relates to an apparatus and a method for processing workpieces or objects having the features of the preamble of the independent claims.
  • the required feed force can be reduced by up to a factor of 10.
  • Known devices are based on the fact that oscillations are transmitted to a tool and / or workpiece by a vibrator via an impulse transmission element. Due to the transmitted pulses, the tool or workpiece is exposed to regular loads, which can reduce the friction between the tool and the workpiece on the one hand and the object on the other hand and thus the press-in force.
  • the Implus250tragungselement is designed as a separate component from the oscillator. In particular, when using ultrasonic vibrations oscillates the oscillator in a Resonanzmod.
  • the Implus250tragungselement is separated as a separate element from the oscillator and does not resonate, but serves primarily to transfer the momentum from the transducer to the tool or workpiece.
  • the momentum transfer element is designed accordingly as a wear part and can be easily replaced without the more complex in its production oscillator must be replaced.
  • the momentum transfer element can also be made long and / or thin in accordance with the requirements of the application, without having to consider a resonant tuning.
  • this dichotomy in oscillator and momentum transfer element has several disadvantages. In particular, it may lead to misalignments and thus quality problems due to the lack of connection between the momentum transfer element and vibrator. Likewise, often the impulse transmission is not optimal, so that excessively high power must be applied by the oscillator.
  • the inventive device is used for machining workpieces.
  • it comprises a tool by means of which the workpiece can be machined directly (for example when the tool is a drill) or indirectly (for example when the tool is loading a workpiece which is driven into the object).
  • the device has a pressing arrangement by means of which the tool can be pressed against the workpiece or the object. By pressing, the tool or the workpiece can be driven into the object.
  • the device also has a vibration generating arrangement and a momentum transfer element.
  • the vibration generating arrangement comprises a vibrator and serves to generate vibrations on a working surface of the vibrator.
  • ultrasound vibration can thus be generated in a manner known per se.
  • the momentum transfer element has an excitation surface and a momentum transfer surface which faces the excitation surface.
  • the excitation surface can be brought into contact with the working surface of the oscillator. In this way, pulses can be transmitted from the vibrator to the momentum transfer element.
  • the momentum transfer surface can be brought into contact with the tool, the workpiece or an intermediate piece. An intermediate piece may for example be part of the tool, the Form tool or be present as a passive further part.
  • a centering arrangement is provided between the oscillator and the momentum transfer element.
  • the working surface of the vibrator is concave and the excitation surface of the momentum transmitting element is convex.
  • the working surface of the vibrator is convex and the excitation surface of the momentum transmitting element is concave. Due to this convex / concave geometry results in an automatic centering of the momentum transfer element relative to the oscillator. Misalignments, which can lead to quality problems, are thus automatically avoided. An additional fixation or centering of the momentum transfer element is therefore not required. In a structurally simple way as a centering and a consistent high quality of the machined workpiece or article is achieved.
  • the concave surface has a radius of curvature which is greater than or equal to the radius of curvature of the convex surface.
  • the concave working surface of the vibrator is provided in a central portion with a radius of curvature which is greater than or equal to the radius of curvature in a central portion of the convex excitation surface of the momentum transfer element.
  • the radius of curvature in a central portion of the working surface of the vibrator is less than or equal to the radius of curvature in a central portion of the concave excitation surface of the momentum transmitting member.
  • the pulse transmission element has a larger mass in an end section of a certain length adjacent to the excitation surface and / or in an end section of equal length adjacent to the momentum transfer surface than in a center section of again equal length between the sections.
  • a heavier end portion adjacent to the excitation surface is able to take on a larger impulse (that is, mass times velocity).
  • a heavier section adjacent to the momentum transfer surface is capable of transmitting a larger impulse to the workpiece or tool. While such an arrangement with a larger mass in one or both end sections is advantageous on its own, it goes without saying that it can be advantageously used in particular in combination with the concave / convex configuration of the excitation surface and the working surface explained above.
  • the greater mass of the end regions can be achieved in various ways: It is thus preferable for the excitation surface and / or the momentum transfer surface to have a larger cross section than the center section.
  • the pulse transmission element may preferably be constructed from a basic body which consists of a first material.
  • an insert made of a second material can be inserted into the base body adjacent to the excitation surface and / or adjacent to the momentum transfer surface. Due to the material properties, especially density and Tungsten is conceivable and preferred strength. But it is also conceivable to use inserts made of different materials at the two end portions. It is essential that the second material has a higher density than the first material.
  • the cross-sectional area of the excitation surface is preferably at least 150% of the cross-sectional area of the momentum transfer surface.
  • the device is operable in a first pulse transmission mode and in a second vibration coupling mode.
  • the vibration coupling mode the vibration parameters and / or the pressing force of the pressing device are selected differently than in the pulse transmission mode.
  • the contact force and / or the amplitude of the vibration is greater than in the vibration coupling mode.
  • the device with a stop surface on which the pulse transmission element can be supported when the device enters the vibration coupling mode.
  • the stop surface causes the force is absorbed by the stop surface in the vibration coupling mode.
  • the tool and / or workpiece is therefore subjected to a lower force. Due to the lower force, there is no coupling or the energy transmitted to the workpiece / tool is also reduced due to the reduced force. In this way can be effectively prevented by simple means unintentional connection.
  • the device may measure the distance traveled by the tool, the force acting on the tool, the frequency of the vibration, or the power (or combinations thereof) received by the vibration generating device.
  • a control unit of the device can control the operation of the device switch from the pulse transmission mode to the vibration coupling mode depending on these measured values. This can be done in particular when a set travel distance traveled by the tool is exceeded, when a desired force acting on the tool is exceeded and / or when the power or the frequency of the vibration generator is changed via a desired value.
  • the device is operable by means of the control unit according to the vibration coupling mode in a third detachment mode.
  • the detaching mode the force generated by the pressing device is reduced and releasing vibrations are generated with the vibration generating device.
  • the Ablettesschwingungen are preferably generated at the same frequency and with the same or lower amplitude as the vibrations in the pulse transmission mode or in the vibration coupling mode. If, in spite of the reduction of the vibration parameters and / or the force in the vibration coupling mode, there is an unintentional connection between the oscillator, momentum transmission element and workpiece / tool, this connection can be separated again in the detaching mode by the detachment vibrations.
  • the detachment vibrations can in particular as in the pending application PCT / EP2018 / 052030 be designed described the same applicant, the content of which is hereby made by cross-reference to the subject of the present application.
  • the tool according to the device according to the invention may preferably be a drill, hammer, punch, rivet converter or a perforation needle. It is conceivable that the tool is formed directly by the momentum transfer element, formed as a separate part but is firmly connected to this or formed as a separate additional element. In particular, in the case of a hammer, the momentum transfer element can directly take over the function of the hammer. In the case of a drill or a Perforation needle, the tool is typically designed as a separate element. Other applications are expanding rivets for producing composite materials, such as CFRP and aluminum, the punching of holes or perforating with needles, especially in non-plasticized materials.
  • the dimension of the momentum transfer element is of course adapted to the corresponding application. Typical dimensions are 5 to 200, preferably 50 to 100 and particularly preferably 60 to 80 mm. Preferred diameters in the region of the momentum transfer surface are typically 5 to 15, preferably 6 to 10 and particularly preferably 7 to 8 mm.
  • the pulse transmission element can be provided with slots and / or reinforcing ribs. Especially in combination with relatively thin diameters, the process accuracy is increased. Slots can additionally cause the vibration coupling mode to start only at higher contact forces.
  • a slit also leads to a cooling. Cooling may additionally prevent or reduce unwanted sticking.
  • the vibration generating device for generating ultrasonic vibrations with a frequency of 10 to 30 khz, in particular 15 to 25 khz formed.
  • the vibration generating device has for this purpose a generator and a converter with piezoelectric elements in a conventional manner.
  • the converter is coupled to the oscillator.
  • linear vibrations are generated in the direction of a longitudinal axis of the momentum transfer element.
  • Other forms of vibration For example, torsional vibrations, but are not excluded and also encompassed by the present invention.
  • the pulse transmission element is resiliently mounted in a direction opposite to the direction of action of the vibrations.
  • Yet another aspect of the invention relates to a method of processing a workpiece or article.
  • a device as described above is preferably used.
  • a tool is pressed against a workpiece or an object.
  • vibrations are generated, in particular ultrasonic vibrations.
  • An excitation surface of a pulse transmission element is acted upon by the vibrations thus generated.
  • Pulses are forwarded from the excitation surface to one of the excitation surface opposite pulse transmission surface of the pulse transmission element.
  • the impulses are finally from the momentum transmission surface transferred to the workpiece or tool.
  • the transmission can take place directly or indirectly via an intermediate piece or via another part of the tool.
  • the device is operated in a first phase in a pulse transmission mode and in a second phase in a vibration coupling mode.
  • the vibration coupling mode the vibration parameters and / or the pressing force of the pressing device are different from those in the pulse transmission mode.
  • the force and / or the amplitude of the vibration is greater than in the vibration coupling mode.
  • a measurement may additionally be carried out in the method, in particular a measurement of the path traveled by the tool, the force acting on the tool or the workpiece, the frequency of the vibration and / or the power absorbed by the vibration generating device.
  • the switching from the pulse transmission mode to the vibration coupling mode can then take place as a function of the measured values.
  • a changeover takes place in particular when exceeding a set travel traveled by the tool, a force acting on the tool and / or changing the power or the frequency of the vibration generating device via a setpoint.
  • This can be an absolute setpoint or a differential setpoint (increase per unit time is above a setpoint).
  • the force generated by the pressing device can be reduced, and peeling vibrations for preventing adhesion between the working surface of the machine can be reduced Oscillator and the excitation surface of the momentum transfer element or between the momentum transfer surface of the momentum transfer element and the workpiece or the tool or an intermediate piece can be generated.
  • FIG. 1 schematically shows essential features of an inventive device 1.
  • the device 1 comprises a vibration generating arrangement 20 and a pulse transmission element 11.
  • the dashed line is an optional intermediate piece 8 between the momentum transfer element 11 and the workpiece 40.
  • the optional, schematically illustrated intermediate piece 13 may typically be a separate tool part (for example a perforation needle, see FIG. 8a or a drill, see FIG. 8c ) act. Without intermediate piece 8, the tool 10 is formed exclusively by the momentum transfer element 11, for example when the tool acts as a hammer.
  • the vibration generating device 20 has a vibrator 21.
  • the vibrator 21 is provided with a work surface 22.
  • the vibration generating arrangement 20 (see in detail also FIG. 6) has an ultrasonic generator by means of which vibrations are generated in a manner known per se with a converter (not shown) with piezoelectric elements and can be transmitted to the oscillator 21.
  • the oscillator 21 is designed so that set at a vibration excitation in the working surface 22 vibration maxima. In a region where oscillation minima are set up in a resonant oscillation mode (oscillation node), the oscillator 21 is mounted via a fastening flange 24 in a press device 30 shown schematically. With the pressing device 30 can be a force F on the Exercise Schwinger 21.
  • FIG. 1 is shown schematically on the left side of the amplitude with which the vibrator 21 oscillates.
  • the working surface 22 is located at a distance ⁇ / 2 from a (not shown) excitation surface of the vibrator 21.
  • the storage in the vibration minimum (amplitude almost zero) is located at a distance A / 4 of an excitation surface.
  • the oscillator 21 is designed overall as a longitudinal sonotrode in a manner known per se.
  • the momentum transfer element 11 has an excitation surface 12.
  • the excitation surface 12 can be brought into contact with the working surface 22 of the vibrator 21.
  • a pulse transmission surface 13 is arranged on the opposite side of the excitation surface 12 of the pulse transmission element 11. From the momentum transfer surface 13 pulses are transmitted directly or indirectly to the workpiece 40 or on the intermediate piece 8.
  • FIG. 1 is to be understood as a schematic representation of the inventive device for explanation. The individual aspects of the invention will be explained below with reference to the other figures.
  • FIG. 2 shows a first embodiment according to the invention.
  • the oscillator 21 is concave on its working surface 22 in a central portion 23.
  • the momentum transfer element 11 is formed convex on its excitation surface 12 in a central portion 14.
  • the radii of curvature R1 and R2 of the working surface 22 and excitation surface 12 are chosen to be substantially equal. However, it is also conceivable to make the radius of curvature R2 of the excitation surface 12 smaller.
  • the entire work surface and the entire excitation surface 12 are concave or convex. However, it is also conceivable to form only the central sections 14 and 23 in a curved manner. Even with this, the desired centering effect can be achieved.
  • the momentum transfer element 11 has a cross-sectional tapering 45.
  • the cross section in an end section 15 adjacent to the excitation surface 12 is greater than in a center section 16 and in an end section 17 (of diameter d).
  • This results in that the mass of the end portion 15 is greater over a length 11 than the respective masses of the central portion 16 (on the same length 12) and the end portion 17 adjacent to the momentum transfer surface 13 (at the same length 13).
  • the pulse transmission element 11 is also provided with schematically illustrated slots 41a and / or ribs 41b. It is conceivable to provide one or more slots 41a but no ribs, one or more ribs 41b (but no slots), or combinations of ribs and slots.
  • FIGS. 3a-3e show various alternative embodiments of devices according to the invention in the region of the interface between oscillator 21 and pulse transmission element 11.
  • the working surface 22 of the vibrator is provided with a blind hole 26.
  • the excitation surface 12 of the momentum transfer element 11 is also provided with a blind hole 43.
  • a centering bolt 42 may be inserted into the two blind holes 26, 43.
  • FIG. 3a a concave / convex configuration of work surface 22 and excitation surface 12 is shown. When using a centering pin 42, however, these surfaces can alternatively also be designed plan.
  • FIG. 3a is also Similar to FIG. 11, a cross-sectional taper 45 is shown.
  • FIG. 3b shows a vibrator 21, which is also provided with a blind hole 26.
  • the excitation surface 12 of the momentum transfer element 11 is formed continuously and without a blind hole.
  • the outer diameter of the momentum transfer member 11 in the end portion 15 adjacent to the excitation surface 12 is formed so as to fit into the blind hole 26 in the vibrator 21. This can also produce a centering.
  • Figure 3c schematically shows a vibrator 21, which is provided with a translation section 25. Due to a reduction in cross-section in the region of the translation section 25, an amplitude transformation occurs in the oscillator 21 in a manner known per se. The desired amplitude of vibration on the work surface 22 can be defined in this way.
  • 3d figure shows a pulse transmission element 11, in which 13 inserts 19a, 19b are used in a base body 18 at the two end portions 15 in the region of excitation surface 12 and the pulse transmission surface.
  • the basic body is typically made of steel or titanium. Other materials such as ceramics are conceivable.
  • the inserts 19a, 19b are made of a heavier material, typically tungsten.
  • the inserts are used by any known to those skilled connection mechanisms in the base body 18, for example, pressed, glued or screwed. It is essential that to increase the mass in the end regions 15 and 17, the material of the inserts 19a, 19b has a higher density than the material of the body. Of course, it is conceivable to provide appropriate inserts even at only one of the end sections.
  • an insert 27 is shown in the area of the work surface 22 of the vibrator.
  • the insert 27 is in particular made of a more resistant material, whereby the wear on the oscillator 21 can be reduced.
  • FIG. 3e shows an alternative arrangement in which the working surface 22 of the vibrator 21 convex and the excitation surface 12 of the momentum transfer element are concave.
  • the radius of curvature R1 of the working surface 22 of the oscillator 21 is the same as the radius of curvature R2 of the excitation surface 12 of the momentum transfer element 11.
  • the oscillators 21 shown above are operated at a frequency of 25 kHz.
  • the length of the momentum transfer element 11 in this embodiment is 75 mm, wherein the lengths 11, 12 and 13 of the sections 15, 16, 17 are each 25 mm.
  • the diameter d of the momentum transfer element 11 in the region of the momentum transfer surface 13 is 7.5 mm.
  • the diameter D of the excitation surface 12 is approximately 9.4 mm (see FIG. 2 ).
  • the cross-sectional area of the excitation surface is therefore approximately 150% of the cross-sectional area of the momentum transfer surface 13.
  • Typical swing widths (i.e., double amplitudes) in the area of the working surface 22 are 100 ⁇ m.
  • Typical powers which are absorbed by the oscillator 21 amount to about 2 kW.
  • the recorded power in a short time (typically over half a second) increase from 2 kW to 6kW.
  • FIG. 4 schematically shows a momentum transfer element 11, which is provided with a stop surface 44.
  • the stop surface 44 comes into abutment with a stop surface 31 of a stop element shown schematically.
  • the abutment surface 44 is spaced apart from the excitation surface 12 by a distance A / 4 (measured at the wavelength of the longitudinal vibration of the vibrator 21). This results in operation in a vibration coupling mode (see the following explanations to FIGS. 7a and 7b ) a vibration node in the region of the stop surface 44 and thus virtually no losses due to the stop.
  • FIG. 5 shows an alternative embodiment of a storage of a novel momentum transfer element 11.
  • the momentum transfer element 11 has similar to the above in connection with FIG. 2 described a cross-sectional taper 45.
  • a return element 47 is resiliently mounted and has a receptacle 48, whose shape is adapted to the outer shape of the momentum transfer element 11.
  • the momentum transfer element 11 can be retrieved with the return element 47.
  • the restoring element 47 can generate a restoring force directed counter to the direction of action E of the oscillation.
  • the restoring element 47 is part of a restoring unit 33, which may be designed passive (resilient mounting) or which by the reference to FIG. 6 subsequently described in detail control unit 2 can be actively operated.
  • FIG. 6 schematically shows the individual components of the inventive device 1 and the nature of their interaction.
  • the device 1 is controlled centrally by a control device 2.
  • the control device 2 controls the operation of an ultrasonic generator 3.
  • the ultrasonic generator 3 returns, if necessary, information concerning frequency and power to the control unit 2, so that the control unit 2 can control the operation according to these values.
  • the ultrasonic generator 3 operates the vibrator 20 by exciting piezoelectric elements, not shown, in a conventional manner.
  • the control device 2 also controls the pressing device 30, which exerts the pressing force F on the vibrator 20.
  • the device 1 also has a measuring device 32. With the measuring device 32 in particular feed path of the vibrator 20 or by the pulse transmission element 11 or a tool 10 can be measured.
  • the measuring device 32 may also be part of the generator 3 and measure the power absorbed by the oscillator 20.
  • generator and control device 2 it is conceivable to integrate generator and control device 2 in one component.
  • the control device 2 is used to operate the device 1 according to different modes of operation. These are related to FIGS. 7a and 7b explained in more detail.
  • a force is built up by the pressing device 30 and the oscillation in the oscillator 20 is generated by the generator 3.
  • the device 1 is operated in a pulse transmission mode I.
  • the pressing device 30 exerts a substantially constant force on the oscillator 20 (see FIG. 7b ). Due to this force, a feed is transmitted to the momentum transfer element 11 and to the workpiece or tool. There is a continuous feed with simultaneous application of momentum transfer element 11 and tool / workpiece with ultrasonic vibrations.
  • Figure 7a is the output from the generator and received by the oscillator power P shown over time. As long as the device operates in the pulse transmission mode, the absorbed power P remains substantially constant.
  • the distance traveled by the tool or workpiece exceeds a certain value, ie when the tool or workpiece comes into abutment, for example, the absorbed power increases due to a coupling of vibrations into the tool / workpiece.
  • this switching time tu a switching of the operation of the generator 3 in a vibration coupling mode.
  • the recorded power decreases in contrast to a hypothetical power consumption without switching (dashed curve shown 2) again.
  • the switching time tu is triggered by the measuring device 32 as explained above. In particular, switching is made when the power increase per unit time (dP / dt) is above a certain value.
  • FIG. 7b schematically shows the pressing force Fpress, which is generated by the pressing device 30 and the force Fws acting on the workpiece over time.
  • the transient phase ES is the force Fpress generated by the pressing device 30 during the pulse transmission mode I substantially identical to the force Fws transmitted to the workpiece.
  • dashed line 1 it is conceivable to keep the pressing force Fpress generated by the pressing device 30 constant (see dashed line 1), but a part of it acting force in the above with reference to FIG. 4 explained arrangement by a stop surface 31 record. This reduces the force acting on the workpiece Fws abruptly (see solid line 2).
  • FIGS. 8a-8c show examples of different workpieces and tools.
  • a tool 10 in the form of a needle By means of a tool 10 in the form of a needle, a hole is made in a workpiece 40 in the form of a plate.
  • tools with a plurality of needles 10 are conceivable and introduce a matrix-like perforation structure in the workpiece 40. Conceivable, for example, filter applications or the production of porous membranes.
  • FIG. 8b shows a tool 14 in the form of a punch rivet.
  • the punch rivet 40 which also has anchoring ribs 39, different layers 46a, 46b, 46c can be connected to one another. This makes it possible to produce composite materials, for example lightweight components.
  • FIG. 8c shows a tool 10 in the form of a drill, by means of which a borehole is to be introduced in a workpiece 40.
  • Pulse transmission phases I and vibration coupling phases F FIG. 8a
  • a changeover occurs when the tool 10 has traveled a predetermined distance .DELTA.l.
  • the switching in the embodiment according to FIG. 8b occurs when the head of the punch rivet 40 comes into abutment with the uppermost layer 46a, resulting in an increase in the power absorbed by the vibrator 21, which can be detected by the generator 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP18158630.6A 2018-02-26 2018-02-26 Dispositif et procédé d'usinage de pièces à usiner ou d'objets Active EP3530359B1 (fr)

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EP18158630.6A EP3530359B1 (fr) 2018-02-26 2018-02-26 Dispositif et procédé d'usinage de pièces à usiner ou d'objets

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EP18158630.6A EP3530359B1 (fr) 2018-02-26 2018-02-26 Dispositif et procédé d'usinage de pièces à usiner ou d'objets

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EP3530359A1 true EP3530359A1 (fr) 2019-08-28
EP3530359B1 EP3530359B1 (fr) 2023-10-18

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH638706A5 (en) * 1978-12-04 1983-10-14 Sp K Bjuro Shlifovalnogo Oboru Method and apparatus for supporting and rotating a workpiece
DE4121148A1 (de) * 1990-07-03 1992-01-09 Brother Ind Ltd Ultraschallgeraet mit amplitudensteuereinheit
DE10160228A1 (de) * 2001-12-07 2003-06-18 Hesse & Knipps Gmbh Kreuztransducer
DE102006045518A1 (de) * 2006-09-27 2008-04-03 Fischerwerke Artur Fischer Gmbh & Co. Kg Ultraschall-Schwingungswandler zum Ultraschallbohren
US7740088B1 (en) 2007-10-30 2010-06-22 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultrasonic rotary-hammer drill
DE102014203757A1 (de) 2014-02-28 2015-09-03 Robert Bosch Gmbh Verfahren zum Verbinden wenigstens zweier Bauteile im Stanznietverfahren, Vorrichtung zum Durchführung des Verfahrens, Fertigungseinrichtung und Verwendung des Verfahrens
DE102015101167A1 (de) * 2015-01-27 2016-07-28 Technische Universität Wien Spindelanordnung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH638706A5 (en) * 1978-12-04 1983-10-14 Sp K Bjuro Shlifovalnogo Oboru Method and apparatus for supporting and rotating a workpiece
DE4121148A1 (de) * 1990-07-03 1992-01-09 Brother Ind Ltd Ultraschallgeraet mit amplitudensteuereinheit
DE10160228A1 (de) * 2001-12-07 2003-06-18 Hesse & Knipps Gmbh Kreuztransducer
DE102006045518A1 (de) * 2006-09-27 2008-04-03 Fischerwerke Artur Fischer Gmbh & Co. Kg Ultraschall-Schwingungswandler zum Ultraschallbohren
US7740088B1 (en) 2007-10-30 2010-06-22 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultrasonic rotary-hammer drill
DE102014203757A1 (de) 2014-02-28 2015-09-03 Robert Bosch Gmbh Verfahren zum Verbinden wenigstens zweier Bauteile im Stanznietverfahren, Vorrichtung zum Durchführung des Verfahrens, Fertigungseinrichtung und Verwendung des Verfahrens
DE102015101167A1 (de) * 2015-01-27 2016-07-28 Technische Universität Wien Spindelanordnung

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