EP3530425B1 - Outil de coupe pour un dispositif de coupe à ultrasons et dispositif de coupe à ultrasons - Google Patents

Outil de coupe pour un dispositif de coupe à ultrasons et dispositif de coupe à ultrasons Download PDF

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Publication number
EP3530425B1
EP3530425B1 EP18158735.3A EP18158735A EP3530425B1 EP 3530425 B1 EP3530425 B1 EP 3530425B1 EP 18158735 A EP18158735 A EP 18158735A EP 3530425 B1 EP3530425 B1 EP 3530425B1
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EP
European Patent Office
Prior art keywords
cutting tool
cutting
sonotrode
positive
screw
Prior art date
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Active
Application number
EP18158735.3A
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German (de)
English (en)
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EP3530425A1 (fr
Inventor
Albert Büttiker
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.)
Telsonic Holding AG
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Telsonic Holding AG
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Priority to EP18158735.3A priority Critical patent/EP3530425B1/fr
Publication of EP3530425A1 publication Critical patent/EP3530425A1/fr
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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
    • 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
    • B26D1/0006—Cutting members therefor
    • 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
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • 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

Definitions

  • the invention relates to a cutting tool for an ultrasonic cutting device and an ultrasonic cutting device according to the preamble of claim 1 EP 1 525 961 A1 .
  • Ultrasonic cutting devices for cutting textiles, foils, rubber composites, foodstuffs etc. have been known for a long time.
  • the high-frequency ultrasonic vibrations generated by the vibrating unit are used for the cutting / separating effect.
  • mechanical, high-frequency vibration energy is transmitted to a cutting tool, for example via a linearly excited vibration system.
  • an alternating voltage generated by a generator is passed on to an oscillating system at an ultrasonic frequency.
  • the oscillating system can consist of a converter, a booster or amplitude transformation piece and a sonotrode.
  • electrical energy is usually converted into mechanical energy through the use of piezoceramics.
  • the vibration is passed on to the sonotrode.
  • the sonotrode converts the output amplitude of the converter or amplitude transformation piece into a working amplitude, also due to its geometric design.
  • the sonotrode is brought into contact with the material to be cut with a cutting tool, for example a blade or a knife.
  • the cutting tool can be made in one piece with the sonotrode.
  • the tool typically includes a cutting end that wears off.
  • the tool can therefore preferably be mounted as a separate part on the sonotrode; Example to be screwed. The tool can then be exchanged as a wearing part.
  • an axial screw connection can be provided, as is shown, for example, in FIG EP 0277823 A1 is shown.
  • a different material is usually necessary than for the actual blade or the actual knife.
  • the cutting tool must be made of two different materials, and the thread material is usually heavier than the actual tool material.
  • Another fastening option is to make a slot on the freely oscillating end of the sonotrode, into which a fastening end of a cutting tool is pushed.
  • the cutting tool is fixed with a screw that is passed through the sonotrode across the direction of insertion of the tool. So that the tool is well secured, the fastening end either has a hole through which the screw can pass or at least a recess with which it can be brought up to the screw.
  • the fastening end of the tool and the slot in the sonotrode can be shaped in such a way that a large part of the tool rests against the inner surface of the slot, as is shown, for example, in FIG JP2000326291 (A ) is revealed.
  • the attachment end must, however, form a significant part of the tool, which leads to increased weight.
  • the pamphlet JP 2010167535 (A. ) shows a cutting tool in which the head of the fastening screw is countersunk in the sonotrode. Lateral vibrations and noise development can thereby be avoided.
  • the position of the cutting tool in the sonotrode is limited essentially by the stop of the fastening end on the screw and by the contact of the fastening end with the walls of the slot.
  • this does not yet clearly define the position of the tool.
  • the cutting tool can slip out of the sonotrode, for example in the event of vibrations or non-uniform loads, or it can perform a rotary movement around the screw.
  • JP2011-125972 and JP2000326291 show sonotrodes in which the slot has a recess adapted to the tool shank, so that the fastening end is enclosed from all sides in the assembled state.
  • the tool can then no longer turn around the screw, but can still slip out of the slot, provided the screw does not pass through a hole in the fastening end.
  • the tool has a significantly smaller width.
  • a correspondingly wider sonotrode must be made available, which can have an unfavorable effect on the mass to be moved.
  • the object is to provide a cutting tool and an ultrasonic cutting device which overcome the disadvantages of the known and, in particular, ensure that the cutting tool does not loosen and overheat.
  • the object is achieved in claim 1 by a cutting tool for an ultrasonic cutting device.
  • the cutting tool includes a cutting end and an attachment end for insertion into one Tool holder or a sonotrode.
  • the cutting end is brought into contact with the workpiece to be separated during use. It can have a sharpened point and / or one or more sharpened edges.
  • the cutting end and the fastening end can be made of different materials.
  • the cutting tool is preferably made in one piece and / or from a material such as hardened tool steel, hard metal or tungsten.
  • the fastening end in particular the entire cutting tool, is designed essentially as a blade.
  • the fastening end has a base body which is smaller in one direction than in the directions perpendicular thereto.
  • the fastening end In a longitudinal direction, which connects the cutting end and the fastening end to one another, and in a width direction perpendicular thereto, the fastening end has a greater extent than in a thickness direction perpendicular to these directions. The length and width are therefore greater than the thickness of the cutting tool.
  • the cutting tool preferably performs a linear oscillation in the longitudinal direction.
  • At least one form-locking block pointing away from at least one blade surface of the fastening end is arranged on the fastening end of the cutting tool.
  • the interlocking block points in particular in the direction of the smallest extension of the fastening end.
  • At least one form-fit block is preferably provided on both sides.
  • the form-fit blocks extend in particular from the opposite blade surfaces.
  • exactly one form-fit block is provided on a sheet surface.
  • a number of form-fitting blocks can also be arranged on a sheet surface.
  • the interlocking block can interact with a complementary interlocking opening. While the cutting tool is usually only fastened by means of a clamp or screw connection, the form-fit block provides an additional safeguard that can, for example, prevent the cutting tool from jerking free and slipping out of the socket on a tool holder or a sonotrode and / or rotating with respect to the socket .
  • the form-fit block has, in particular, an abutment surface with a directional component in the longitudinal direction.
  • the interlocking block is located at the fastening end, in an area where clamping forces typically act on the cutting tool anyway. The vibration of the cutting tool is not disturbed.
  • the at least one form-fit block extends over the entire width of the blade surface. In interaction with a complementary form-fit opening, twisting of the cutting tool can thus be prevented. If the interlocking block has an essentially constant cross-section over the width, the mass of the interlocking block is moreover evenly distributed over the width of the cutting tool.
  • the at least one form-fit block advantageously extends in a direction perpendicular to the longitudinal direction, which connects the cutting end and the fastening end.
  • the interlocking block can then prevent the cutting tool from slipping out and turning.
  • the cutting tool can also be pushed laterally in a direction perpendicular to the longitudinal direction into a corresponding receptacle on a tool holder or in a sonotrode.
  • the tight fit also allows cutting with higher amplitudes.
  • Achieving a secure fit with a form-fit block is a measure that is easy to implement and typically does not require any higher manufacturing costs, since the form-fit block can be molded on without great effort, depending on the profile.
  • the at least one form-fit block can have a bevel on the edge, which facilitates insertion of the cutting tool into a receptacle.
  • Form-fitting blocks can be arranged mirror-symmetrically to one another.
  • two form-locking blocks arranged on opposite blade surfaces can be mirror-symmetrical be to each other.
  • the entire cutting tool is designed to be mirror-symmetrical except for the cutting end.
  • the mirror symmetry exists with respect to at least one plane which runs parallel to the longitudinal direction, that is to say the direction which connects the cutting end and the fastening end.
  • the mirror symmetry preferably exists with respect to two planes perpendicular to one another, one of the mirror planes being parallel to the longitudinal direction and to the width direction and one of the mirror planes being parallel to the longitudinal direction and to the thickness direction.
  • the at least one form-fit block preferably has a trapezoidal cross section.
  • the cross section is preferably obtained in a plane along the longitudinal direction, which connects the free end and the fastening end, and preferably perpendicular to the width direction, i.e. in a plane parallel to the thickness direction, in which the fastening end preferably has the smallest extent.
  • the longer baseline lies against the leaf surface and the shorter baseline points away from the leaf surface.
  • the cross section preferably has the shape of an isosceles trapezoid.
  • the legs of the trapezoid form an angle of 90 ° or 45 ° with the leaf surface.
  • the cutting tool can then be produced without great effort.
  • a recess is provided at the end of the fastening end, which in particular points in the longitudinal direction. This allows the cutting tool to be brought close to a fastening screw in a sonotrode or in a tool holder.
  • the recess has a round contour, for example, in order to adapt to the round diameter of the screw. Clamping surfaces remain on both sides of the recess.
  • the length of the cutting tool is between 20 and 30 mm, for example.
  • the width of the cutting tool is 7-12 mm, for example.
  • the thickness of the cutting tool is, for example, 0.05-3mm.
  • the at least one form-fit block extends, for example, 1-3mm away from the blade surface.
  • the width of the cutting tool tapers at the transition from the fastening end to the cutting end, preferably by 0.5-1mm.
  • the thickness preferably tapers by 0.25-0.45mm.
  • the object is also achieved by an ultrasonic cutting device with a sonotrode and a cutting tool, in particular as described above.
  • the cutting tool includes a cutting end and an attachment end.
  • the sonotrode has at least one screw hole which is used to receive a screw for fixing the cutting tool to the sonotrode.
  • At least one form-fit block extends away from the fastening end of the cutting tool and at least one complementary form-fit recess is provided on the sonotrode.
  • the form-fit block forms a form fit with the form-fit recess when the cutting tool is mounted in the sonotrode.
  • the form fit acts at least in a longitudinal direction which connects the cutting end and the fastening end.
  • the form-fit block in particular has a stop surface with a directional component in the longitudinal direction, and the form-fit opening in particular has a stop surface complementary thereto.
  • the form-fit connection clearly defines the position of the cutting tool in the sonotrode, at least with respect to the longitudinal direction.
  • the interlocking block and the interlocking recess are preferably designed in such a way that a relative angular alignment between the sonotrode and the cutting tool with respect to the screw axis is also established.
  • the form-fit block and the form-fit recess extend, for example, in a direction perpendicular to the longitudinal direction.
  • the sonotrode can have a contact surface on which the cutting tool is applied and is fixed with a screw.
  • the sonotrode has two legs at one end which form a slot into which the fastening end of the cutting tool can be inserted.
  • Screw holes are arranged in the legs for receiving a screw which provides a clamping force for the legs.
  • the at least one complementary positive-locking recess is provided on the inside of the legs of the sonotrode.
  • the sonotrode and cutting tools form a symmetrical arrangement.
  • the fastening end of the cutting tool is framed by the legs of the sonotrode.
  • the fastening end in particular the entire cutting tool, is designed essentially as a blade.
  • Form-fitting blocks preferably extend away from the blade surfaces on both sides, and more preferably, as described above, have a trapezoidal cross-section.
  • the slot in the sonotrode is then just as symmetrical as the fastening end of the cutting tool, which has a favorable effect on the stability of the linear vibrations.
  • the slot advantageously has a widening at the fixed end of the legs.
  • the length and width of the widening determine the flexibility of the legs. On the one hand, these should allow the cutting tool to be pushed in easily and, on the other hand, allow a reliable clamping force to be applied by the screw.
  • the expansion preferably has a rounded inner contour to prevent notches.
  • the legs At the free ends, the legs have contact surfaces on the inside against which the blade surface of the cutting tool can rest.
  • One of the legs can have less mass than the other leg.
  • the lighter leg has a flattening on the outside so that the contact surface and the contact between the cutting tool and the sonotrode are not impaired.
  • the difference in mass preferably helps to compensate for the weight of the screw head, so that the longitudinal oscillation is not disturbed by the asymmetry of a fastening screw, which has a thread and a generally thickened head.
  • One leg can have a screw hole with a screw head countersink.
  • the countersinking of the screw head contributes to the mass reduction and also compensates for at least part of the weight of the screw head.
  • the screw hole is provided with a countersunk screw head on a lighter leg.
  • the screw head can then be partially countersunk so that a remainder of the head still protrudes from the sonotrode with an external contact surface for a tool.
  • At least one screw hole preferably has an internal thread. There is therefore no need for a nut to fasten the screw. There is preferably only one thread in the screw hole on a heavier leg. A screw hole on a heavy one Leg is used to hold the screw, a screw hole on a lighter leg for placing and / or countersinking the screw head.
  • the interlocking block and the interlocking recess extend in a direction perpendicular to the longitudinal direction, so that the cutting tool can be inserted laterally into the sonotrode.
  • the ultrasonic cutting device preferably comprises a screw for insertion into the screw holes and for generating a clamping force between the legs.
  • the screw has a head which preferably has a recess.
  • the head is advantageously tapered, in particular conical.
  • the screw can then take a firm seat in the screw hole, which largely prevents friction and thus the development of heat.
  • the screw also preferably has a cylindrical section which is used for optimal positioning.
  • Figure 1 shows a cutting tool 1 for an ultrasonic cutting device 10 (see Figure 5 ) in perspective view.
  • the cutting tool 1 comprises a cutting end 2 and a fastening end 3 for insertion into a tool holder or a sonotrode 11 (see Figure 5 ).
  • the cutting tool 1 is essentially designed as a blade, the dimensions in the longitudinal direction 25, which connects the cutting end 2 and a fastening end 3, and the width direction 26 perpendicular thereto being greater than the thickness 29 in a thickness direction 27 perpendicular to both directions 25, 26 .
  • Form-fitting blocks 4 pointing away from the opposite blade surfaces 8 are arranged on the fastening end 3 of the cutting tool 1.
  • a recess 7 is provided at the end of the fastening end 3 pointing away from the cutting end 2, so that the cutting tool is close to a fastening screw 15 (see FIG Figure 5 ) can be pushed.
  • Figure 2 shows the cutting tool 1 in a first plan view perpendicular to the width direction 26 (see Figure 1 ).
  • the form-fit blocks 4 are arranged mirror-symmetrically to one another. Except for the cutting end 2, the entire cutting tool 1 is designed to be mirror-symmetrical with respect to a plane 5 which runs parallel to the direction 25, which connects the cutting end 2 and the fastening end 3.
  • the thickness 29 of the cutting tool 1 tapers at a transition 31 from the fastening end 3 to the cutting end 2.
  • the length 35 of the cutting tool 1 is 20 to 30 mm, for example.
  • the maximum thickness 29 of the cutting tool 1 is, for example, 0.05 to 3 mm.
  • Figure 3 shows the cutting tool 1 in a second plan view.
  • the form-fit blocks 4 extend over the entire width 30 of the sheet surface 8. At the edges there are bevels 33 that facilitate the introduction of the form-fit blocks 4 into the form-fit recesses 17 (see FIG Figure 5 ) facilitate.
  • the width of the cutting tool 1 tapers at the transition 31 from the fastening end 3 to the cutting end 2.
  • the maximum width 30 of the cutting tool (1) is 7 to 12 mm.
  • Figure 4 shows a fastening end 3 in a sectional view.
  • the symmetrically arranged interlocking blocks 4 each have a cross section 6 in the form of a trapezoid.
  • One side edge 9 defines the direction of an abutment surface 28 (see Figure 3 ) with a component that points in the longitudinal direction 25.
  • a form fit is created which prevents the cutting tool from slipping out and twisting.
  • FIG. 5 shows an ultrasonic cutting device 10 in a perspective view.
  • the ultrasonic cutting device 10 comprises a cutting tool 1 as shown in FIG Figures 1-4 is shown and a sonotrode 11.
  • a screw 15 is provided to fix the cutting tool 1.
  • the form-fit blocks 4 of the cutting tool form a form fit with complementary form-fit recesses 17 on the sonotrode 11.
  • the sonotrode 11 has two legs 12a, 12b at one end, which form a slot 13 in which the fastening end 3 of the cutting tool 1 is pushed in in an insertion direction 34 which corresponds to the width direction 26 (see FIG Figure 1 ), can be pushed in.
  • Figure 6 shows a free end of a sonotrode 11 in a first plan view.
  • the form-fit recesses 17 are provided on the inner sides 16 of the legs 12a, 12b.
  • the slot 13 has a widening 18 which has a rounded inner contour 19.
  • One of the legs 12a has a flat surface 20 on the outside and thus has less mass than the other leg 12b. With an inserted screw 15 (balde Figure 5 ) the weight of the screw head 23 (see Figure 8 ) compensated.
  • Figure 7 shows the free end of the sonotrode 11 in a sectional view.
  • Screw holes 14a, 14b are arranged in the legs 12a, 12b for receiving a screw 15 (see FIG Figure 5 ), which ensures a clamping force of the legs 12a, 12b.
  • a conical screw head countersink 21 is additionally provided, which merges into a cylindrically shaped recess 36.
  • the shape of the screw hole 14a allows precise centering and positioning of the screw.
  • the screw hole 14b on the heavier leg 12b has an internal thread 22.
  • FIG 8 shows a fastening screw 15 in sectional view.
  • the screw 15 has a head 23 in which a recess 24 is provided.
  • An external thread 31 is provided at the end of the fastening screw 15 which is opposite the head 23.
  • the screw 15 has a conically shaped area 37 which merges into a cylindrical section 38. The screw 15 can thus be centered and positioned well.

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  • Mechanical Engineering (AREA)
  • Knives (AREA)

Claims (16)

  1. Outil de coupe (1) pour un dispositif de coupe par ultrasons (10), dans lequel l'outil de coupe (1) comprend une extrémité de coupe (2) et une extrémité de fixation (3) pour l'insertion dans un porte-outil ou une sonotrode (11), dans laquelle l'extrémité de fixation (3), en particulier l'outil de coupe (1) entier, est essentiellement conçue comme une feuille, et dans laquelle l'épaisseur (29) de l'outil de coupe (1) diminue à une transition (31) de l'extrémité de fixation (3) à l'extrémité de coupe (2),
    caractérisé en ce que
    à l'extrémité de fixation (3) de l'outil de coupe (1), au moins un bloc à verrouillage positif (4) orienté à l'opposé d'au moins une surface de lame (8) de l'extrémité de fixation (3) est disposé, de préférence un bloc à verrouillage positif (4) de chaque côté.
  2. Outil de coupe (1) selon la revendication 1, dans lequel le au moins un bloc à verrouillage positif (4) s'étend sur toute la largeur (30) de la surface de la lame (8).
  3. Outil de coupe (1) selon la revendication 1 ou 2, dans lequel le au moins un bloc de verrouillage positif (4) s'étend dans une direction perpendiculaire à la direction longitudinale (25) reliant l'extrémité de coupe (2) et l'extrémité de fixation (3).
  4. Outil de coupe (1) selon la revendication 1, 2 ou 3, dans lequel les blocs à verrouillage positif (4) sont disposés de manière symétrique les uns par rapport aux autres, en particulier l'outil de coupe (1) est conçu de manière symétrique à l'exception de l'extrémité de coupe (2).
  5. Outil de coupe (1) selon l'une des revendications précédentes, dans lequel les blocs à verrouillage positif (4) ont une section trapézoïdale (6).
  6. Outil de coupe (1) selon l'une des revendications précédentes, dans lequel un évidement (7) est prévu à l'extrémité de l'extrémité de fixation (3) opposée à l'extrémité de coupe (2).
  7. Outil de coupe (1) selon l'une des revendications précédentes, dans lequel la largeur (30) de l'outil de coupe (1) diminue à une transition (31) de l'extrémité de fixation (3) à l'extrémité de coupe (2).
  8. Dispositif de coupe par ultrasons (10) comprenant une sonotrode (11) et un outil de coupe (1), en particulier selon l'une des revendications 1-7, l'outil de coupe (1) comprenant une extrémité de coupe (2) et une extrémité de fixation (3), la sonotrode (11) ayant au moins un trou de vis (14a, 14b) pour recevoir une vis (15) pour fixer l'outil de coupe (1) à la sonotrode (11),
    caractérisé en ce qu'au moins un bloc à verrouillage positif (4) s'étend depuis l'extrémité de fixation (3) de l'outil de coupe (1) et au moins un évidement à verrouillage positif complémentaire (17) est prévu sur la sonotrode (11) de sorte que le bloc à verrouillage positif (4) forme un verrouillage positif avec l'évidement à verrouillage positif (17) au moins dans une direction longitudinale (25) reliant l'extrémité de coupe (2) et l'extrémité de fixation (3) lorsque l'outil de coupe (1) est monté dans la sonotrode (11).
  9. Dispositif de coupe par ultrasons (10) selon la revendication 8, dans lequel la sonotrode (11) possède, à une extrémité, deux branches (12a, 12b) qui forment une fente (13) dans laquelle l'extrémité de fixation (3) de l'outil de coupe (1) peut être insérée, et dans lequel, dans les branches (12a, 12b) des trous de vis (14a, 14b), sont disposés pour recevoir une vis (15) qui assure une force de serrage des branches (12a, 12b), et dans lequel le au moins un évidement complémentaire (17) à verrouillage positif est prévu sur les côtés intérieurs (16) des branches (12a, 12b) de la sonotrode (11).
  10. Dispositif de coupe par ultrasons selon (10) la revendication 8 ou 9, dans lequel l'extrémité de fixation (3), en particulier l'outil de coupe (1) entier, est essentiellement conçue comme une lame et, de préférence, des blocs de verrouillage positif (4) s'éloignent des surfaces de la lame (8) des deux côtés.
  11. Dispositif de coupe par ultrasons (10) selon la revendication 9 ou 10, dans lequel la fente (13) aux extrémités fixes des branches (12a, 12b) présente un élargissement (18), de préférence avec un contour intérieur arrondi (19).
  12. Dispositif de coupe par ultrasons (10) selon l'une des revendications 9 à 11, l'une des branches (12a) ayant une masse inférieure à celle de l'autre branche, en particulier présentant un aplatissement (20) sur la face extérieure.
  13. Dispositif de coupe par ultrasons (10) selon l'une des revendications 9 à 12, dans lequel le trou de vis (14a) sur une branche présente une fraise à tête de vis (21), en particulier conique, et/ou un évidement cylindrique (36), en particulier le trou de vis (14a) sur une branche plus légère (12a).
  14. Dispositif de coupe par ultrasons (10) selon l'une des revendications 9 à 14, dans lequel au moins un trou de vis (14b) présente un filetage interne (22), de préférence le trou de vis (14b) sur une branche plus lourde (12b).
  15. Dispositif de coupe par ultrasons (10) selon l'une des revendications 9 à 14, dans lequel le bloc à verrouillage positif (4) et l'évidement à verrouillage positif (17) s'étendent dans une direction (26) perpendiculaire à la direction longitudinale (25) de sorte que l'outil de coupe (1) peut être poussé latéralement dans la sonotrode (11).
  16. Dispositif de coupe par ultrasons (10) selon l'une des revendications 9 à 15, dans lequel le dispositif de coupe par ultrasons (10) comprend une vis (15), destinée à être introduite dans les trous de vis (14a, 14b) et à générer une force de serrage entre les branches (12a, 12b), en particulier une vis (15) avec une tête (23), qui présente de préférence un évidement (24), la vis présentant en particulier une zone conique (37) qui se transforme en une zone cylindrique (38).
EP18158735.3A 2018-02-27 2018-02-27 Outil de coupe pour un dispositif de coupe à ultrasons et dispositif de coupe à ultrasons Active EP3530425B1 (fr)

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EP18158735.3A EP3530425B1 (fr) 2018-02-27 2018-02-27 Outil de coupe pour un dispositif de coupe à ultrasons et dispositif de coupe à ultrasons

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EP3530425A1 EP3530425A1 (fr) 2019-08-28
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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0277823B1 (fr) 1987-02-04 1991-04-24 Taga Electric Co. Ltd. Dispositif de coupe à ultrasons
JP3462118B2 (ja) 1999-05-19 2003-11-05 株式会社ソノテック 処理刃ホルダー
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