EP3530425A1 - Ultrasonic vibration cutting device and cutting tool for an ultrasonic vibration cutting device - Google Patents
Ultrasonic vibration cutting device and cutting tool for an ultrasonic vibration cutting device Download PDFInfo
- Publication number
- EP3530425A1 EP3530425A1 EP18158735.3A EP18158735A EP3530425A1 EP 3530425 A1 EP3530425 A1 EP 3530425A1 EP 18158735 A EP18158735 A EP 18158735A EP 3530425 A1 EP3530425 A1 EP 3530425A1
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- Prior art keywords
- cutting tool
- cutting
- sonotrode
- screw
- cutting device
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- 238000003780 insertion Methods 0.000 claims abstract description 11
- 230000037431 insertion Effects 0.000 claims abstract description 11
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- 239000000463 material Substances 0.000 description 7
- 241000826860 Trapezium Species 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
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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
- 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
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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
- 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 ultrasonic cutting device according to the preambles of the independent claims.
- Ultrasonic cutting devices for cutting textiles, films, rubber compounds, foods, etc. have long been known.
- the high-frequency ultrasonic vibrations generated by the oscillating unit are used.
- 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 transmitted at an ultrasonic frequency to a vibration system.
- the oscillating system may consist of a converter, a booster or amplitude transformation piece and a sonotrode.
- the converter is usually converted by the use of piezoceramics electrical energy into mechanical energy.
- the vibration is passed on to the sonotrode.
- the sonotrode also due to its geometric design, converts the output amplitude of the converter or amplitude transformation piece into a working amplitude.
- the sonotrode is brought into contact with the material to be separated 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 usually includes a cutting end which wears down.
- the tool can be mounted as a separate part of the sonotrode, it can for Example be screwed on. The tool can then be replaced as a wear part.
- an axial screw connection can be provided, as used for example in EP 0277823 A1 is shown.
- the cutting tool must be made of two different materials, and moreover usually the thread material is heavier than the actual tool material.
- Another possibility for fastening is to attach a slot to the freely oscillating end of the sonotrode into which a fastening end of a cutting tool is inserted.
- the cutting tool is fixed with a screw, which is guided transversely to the direction of insertion of the tool through the sonotrode.
- the attachment end either has a hole through which the screw can pass or at least one recess with which it can be brought up to the screw.
- the attachment end of the tool and the slot in the sonotrode can thereby be shaped so that a large part of the tool rests against the inner surface of the slot, as shown for example in FIG JP2000326291 (A ) is disclosed.
- the attachment end must form a significant part of the tool, resulting in an increased weight.
- the publication JP 2010167535 (A ) shows a cutting tool in which the head of the fastening screw is sunk in the sonotrode. Lateral vibrations and noise can be avoided.
- the position of the cutting tool in the sonotrode is limited in the known ultrasonic cutting devices essentially by the abutment of the attachment end to the screw and by the contact of the attachment end with the walls of the slot. However, this does not determine the position of the tool yet clearly.
- the cutting tool can slip out of the sonotrode, for example, in case of vibrations or in case of non-uniform loads or execute a rotary movement around the screw.
- JP2011-125972 and JP2000326291 show sonotrodes in which the slot has a tool shaft adapted to the recess so that the mounting end is mounted in the mounted state from all sides. The tool can then no longer rotate around the screw but still slip out of the slot unless the screw passes through a hole in the mounting end.
- the tool has a significantly smaller width.
- a correspondingly wider sonotrode must be made available, which can adversely affect the mass to be moved.
- the object is achieved by a cutting tool for an ultrasonic cutting device.
- the cutting tool includes a cutting end and a mounting end for insertion into a Tool holder or a sonotrode.
- the cutting end is brought into contact with the workpiece to be cut in use. It may have a sharpened tip and / or one or more sharpened edges.
- the cutting end and the attachment end may be made of different materials.
- the cutting tool is in one piece and / or made of a material, such as hardened tool steel, tungsten carbide or tungsten.
- the attachment end in particular the entire cutting tool, is essentially designed as a blade. That is, the attachment end has a body having a smaller extent in one direction than in the directions perpendicular thereto. In a longitudinal direction connecting the cutting end and the attachment end, and in a width direction perpendicular thereto, the attachment end has a larger extent than in a thickness direction perpendicular to these directions. The length and width are thus greater than the thickness of the cutting tool.
- the cutting tool preferably performs linear oscillation in the longitudinal direction.
- At least one positive-fit block facing away from at least one blade surface of the attachment end is arranged at the attachment end of the cutting tool.
- the positive locking block points in particular in the direction of the smallest extension of the attachment ends.
- at least one interlocking block is provided on both sides.
- the form-fitting blocks extend in particular from the opposite leaf surfaces.
- exactly one interlocking block is provided on a sheet surface.
- it can also be arranged a number of form-fitting blocks on a sheet surface.
- the interlocking block can interact with a complementary positive connection opening. While usually the cutting tool is fastened only by means of a clamp or screw connection, the interlocking block provides an additional safeguard, which can prevent, for example, the cutting tool from churning and slipping out of the socket on a tool holder or a sonotrode and / or rotating with respect to the socket ,
- the form-fitting block has in particular a shock surface, with a directional component in the longitudinal direction.
- the interlocking block is located at the attachment end, in an area where typically clamping forces act on the cutting tool anyway. The vibration of the cutting tool is therefore not disturbed.
- the at least one positive locking block extends over the entire width of the blade surface. In interaction with a complementary form-fit opening so twisting the Schneidmaschineschws can be prevented. If the interlocking block has a substantially constant cross section across the width, then the mass of the interlocking block is also distributed uniformly over the width of the cutting tool.
- the at least one positive locking block extends in a direction perpendicular to the longitudinal direction, which connects the cutting end and the attachment end.
- the Positive locking block can then prevent slipping and turning the cutting tool.
- the cutting tool can also be pushed laterally in a direction perpendicular to the longitudinal direction in a corresponding receptacle on a tool holder or in a sonotrode.
- the tight fit also allows cutting with higher amplitudes.
- the at least one interlocking block may have a bevel at the edge, which facilitates insertion of the cutting tool into a receptacle.
- Forming blocks can be arranged mirror-symmetrically to each other.
- two positively locking blocks arranged on opposite leaf surfaces can be mirror-symmetrical to each other.
- the entire cutting tool is formed with mirror symmetry except for the cutting end.
- the mirror symmetry exists with respect to at least one plane that is parallel to the longitudinal direction, that is, the direction connecting the cutting end and the attachment end.
- the mirror symmetry with respect to two mutually perpendicular planes, wherein one of the mirror planes is parallel to the longitudinal direction and the width direction and one of the mirror planes is parallel to the longitudinal direction and the thickness direction.
- the at least one positive locking block has a trapezoidal cross section.
- the cross-section preferably results in a plane along the longitudinal direction, which connects the free end and the attachment end, and preferably perpendicular to the width direction, ie in a plane parallel to the thickness direction, in which the attachment end preferably has the smallest extent.
- the longer baseline abuts the leaf surface and the shorter baseline points away from the leaf surface.
- the cross section preferably has the shape of an isosceles trapezium.
- the legs of the trapezium with the leaf surface form an angle of 90 ° or 45 °.
- the cutting tool can then be made without much effort.
- a recess is provided at the end of the attachment end, which has in particular 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, for example, a round contour in order to adapt to the round diameter of the screw. Both sides of the recess remain clamping surfaces.
- the length of the cutting tool is for example between 20 and 30 mm.
- the width of the cutting tool is for example 7-12 mm.
- the thickness of the cutting tool is for example 0.05-3mm.
- the at least one positive locking block extends, for example, 1-3 mm away from the blade surface.
- the width and / or the thickness of the cutting tool tapers at the transition from the attachment end to the cutting end, preferably the width by 0.5-1 mm and / or the thickness by 0.25-0.45 mm.
- 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 a mounting end.
- the sonotrode has at least one screw hole which serves to receive a screw for fixing the cutting tool to the sonotrode.
- At least one interlocking block extends away and at the sonotrode at least one complementary form-fitting recess is provided.
- the interlocking block forms a positive connection with the form-fitting recess when the cutting tool is mounted in the sonotrode.
- the positive connection acts at least in a longitudinal direction which connects the cutting end and the attachment end.
- the positive locking block has, in particular, a stop surface with a direction component in the longitudinal direction, and the positive connection opening has, in particular, a stop surface complementary thereto.
- the interlocking 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 form-fitting recess are formed so that a relative angular alignment between the sonotrode and cutting tool with respect to the screw axis is set.
- positive locking block and the form-fitting recess extend, for example, in a direction perpendicular to the longitudinal direction.
- the sonotrode may have a contact surface on which the cutting tool is applied and fixed with a screw.
- the sonotrode has at one end two legs which form a slot into which the attachment end of the cutting tool can be inserted.
- the at least one complementary form-fitting recess is provided.
- sonotrode and cutting tools form a symmetrical arrangement.
- the attachment end of the cutting tool is bordered by the legs of the sonotrode.
- the attachment end in particular the entire cutting tool, is designed essentially as a blade.
- Forming blocks preferably extend from the sheet surfaces on both sides, which further preferably have a trapezoidal cross section, as described above.
- On the inner sides of the legs are complementary positive openings.
- the slot in the sonotrode is then formed as symmetrical as the attachment end of the cutting tool, which has a favorable effect on the stability of the linear oscillations.
- the slot at the fixed end of the legs on a widening The length and width of the expansion determines the flexibility of the legs. These are on the one hand allow easy insertion of the cutting tool, on the other hand allow a reliable clamping force can be applied by the screw.
- the expansion preferably has a rounded inner contour to prevent notches.
- One of the legs may have less mass than the other leg.
- the lighter leg on the outside of a flattening, so that the contact surface and the contact between the cutting tool and sonotrode is not affected.
- the mass difference preferably contributes to the compensation of the weight of the screw head, so that the longitudinal vibration is not disturbed by the asymmetry of a fastening screw which has a thread and a generally thickened head.
- a leg may have a screw hole with a screw head countersink.
- the screw head depression contributes to the mass reduction and also compensates for at least a part of the weight of the screw head.
- the screw hole is provided with screw head depression on a lighter leg.
- the screw head can then be partially sunk, so that even a remainder of the head protrudes with an outer attack surface for a tool from the sonotrode.
- At least one screw hole has an internal thread. There is thus no nut necessary for fastening the screw.
- a screw hole on a heavy one Leg serves to hold the screw, a screw hole on a lighter leg for applying and / or sinking the screw head.
- the positive locking block and the form-locking 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 comprises a screw for insertion into the screw holes and for generating a clamping force between the legs.
- the screw has in particular a head, which preferably has a recess.
- the head is tapered, in particular conical executed.
- the screw can then take a firm seat in the screw hole, whereby friction and thus heat development is largely prevented.
- the screw also preferably has a cylindrical portion which serves for optimum positioning.
- FIG. 1 shows a cutting tool 1 for an ultrasonic cutting device 10 (see FIG. 5 ) in perspective view.
- the cutting tool 1 comprises a cutting end 2 and a fixing end 3 for insertion into a tool holder or a sonotrode 11 (see FIG FIG. 5 ).
- the cutting tool 1 is designed essentially as a blade, wherein 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 are greater than the thickness 29 in a thickness direction 27 perpendicular to both directions 25, 26 ,
- a recess 7 is provided, so that the cutting tool is close to a fastening screw 15 (see FIG. 5 ) can be pushed.
- FIG. 2 shows the cutting tool 1 in a first plan view perpendicular to the width direction 26 (see FIG. 1 ).
- the positive locking blocks 4 are arranged mirror-symmetrically to each other. Except for the cutting end 2, the entire cutting tool 1 is mirror-symmetrical with respect to a plane 5 which is parallel to the direction 25 which connects the cutting end 2 and the attachment end 3.
- the thickness 29 of the cutting tool 1 tapers at a transition 31 from the attachment end 3 to the cutting end 2.
- the length 35 of the cutting tool 1 is for example 20 to 30 mm.
- the maximum thickness 29 of the cutting tool 1 is for example 0.05 to 3 mm.
- FIG. 3 shows the cutting tool 1 in a second plan view.
- the interlocking blocks 4 extend over the entire width 30 of the sheet surface 8. At the edges are bevels 33, which are the insertion of the positive locking blocks 4 in the Form gleichausEnglishept 17 (see FIG. 5 ) facilitate.
- the width of the cutting tool 1 tapers at the transition 31 from the attachment end 3 to the cutting end 2.
- the maximum width 30 of the cutting tool (1) is 7 to 12 mm.
- FIG. 4 shows a mounting end 3 in a sectional view.
- the symmetrically arranged positive locking blocks 4 each have a cross section 6 in the form of a trapezoid.
- One side edge 9 defines the direction of an impact surface 28 (see FIG. 3 ) with a component which points in the longitudinal direction 25.
- a complementary surface not shown in the figure creates a positive connection, which prevents slipping and twisting of the cutting tool.
- FIG. 5 shows an ultrasonic cutting device 10 in a perspective view.
- the ultrasonic cutting apparatus 10 includes a cutting tool 1 as shown in FIGS Figures 1-4 is shown and a sonotrode 11.
- a screw 15 is provided for fixing the cutting tool 1.
- the form-fitting blocks 4 of the cutting tool form a positive connection with complementary form-fitting recesses 17 on the sonotrode 11.
- the sonotrode 11 has at one end two legs 12a, 12b, which form a slot 13, in which the attachment end 3 of the cutting tool 1 in a insertion direction 34, which corresponds to the width direction 26 (see FIG. 1 ), is insertable.
- FIG. 6 shows a free end of a sonotrode 11 in a first plan view.
- the positive engagement recesses 17 are provided on the inner sides 16 of the legs 12a, 12b.
- the slot 13 has at the fixed ends of the legs 12a, 12b an expansion 18, which has a rounded inner contour 19.
- One of the legs 12a has on the outer side a flattening 20, and thus has less mass than the other leg 12b. With a screw inserted 15 (balde FIG. 5 ) so the weight of the screw head 23 (see FIG. 8 ) compensated.
- FIG. 7 shows the free end of the sonotrode 11 in a sectional view.
- screw holes 14a, 14b are arranged for receiving a screw 15 (see FIG. 5 ), which provides 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 accurate 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 a sectional view.
- the screw 15 has a head 23 in which a recess 24 is provided. At the end of the fastening screw 15, which is opposite the head 23, an external thread 31 is provided.
- the screw 15 has a conically shaped portion 37, which merges into a cylindrical portion 38. The screw 15 can thus be well centered and positioned.
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Abstract
Die Erfindung betrifft ein Schneidwerkzeug (1) für eine Ultraschallschneidvorrichtung (10) und Ultraschallschneidvorrichtung (10) mit Sonotrode (11) und Schneidwerkzeug (1). Das Schneidwerkzeug (1) umfasst ein Schneidende (2) und ein Befestigungsende (3) zum Einschieben in einen Werkzeughalter oder eine Sonotrode (11). Vom Befestigungsende (3) des Schneidwerkzeugs (1) erstreckt sich mindestens ein Formschlussblock (4) weg. An der Sonotrode ist (10) mindestens eine komplementäre Formschlussausnehmung (17) vorgesehen, so dass der Formschlussblock (4) mit der Formschlussausnehmung (17) einen Formschluss zumindest in einer Längsrichtung (25), welche das Schneidende (2) und das Befestigungsende (3) verbindet, bildet, wenn das Schneidwerkzeug (1) in der Sonotrode (11) montiert ist.The invention relates to a cutting tool (1) for an ultrasonic cutting device (10) and ultrasonic cutting device (10) with sonotrode (11) and cutting tool (1). The cutting tool (1) comprises a cutting end (2) and a fastening end (3) for insertion into a tool holder or a sonotrode (11). From the attachment end (3) of the cutting tool (1) extends at least one positive locking block (4) away. At least one complementary form-fitting recess (17) is provided on the sonotrode (10), so that the form-fitting block (4) with the form-fitting recess (17) forms a positive fit at least in a longitudinal direction (25) which surrounds the cutting end (2) and the attachment end (3 ), when the cutting tool (1) is mounted in the sonotrode (11).
Description
Die Erfindung betrifft ein Schneidwerkzeug für eine Ultraschallschneidvorrichtung und Ultraschallschneidvorrichtung gemäss den Oberbegriffen der unabhängigen Ansprüche.The invention relates to a cutting tool for an ultrasonic cutting device and ultrasonic cutting device according to the preambles of the independent claims.
Ultraschall-Schneidvorrichtungen zum Schneiden von Textilien, Folien, Kautschukverbunden, Lebensmitteln usw. sind seit langem bekannt. Für den Schneid-/Trenneffekt werden die von der schwingenden Einheit erzeugten hochfrequenten Ultraschallschwingungen genutzt. Beim Ultraschallschneiden wird mechanische, hochfrequente Schwingungsenergie zum Beispiel über ein linear angeregtes Schwingsystem auf ein Schneidwerkzeug übertragen.Ultrasonic cutting devices for cutting textiles, films, rubber compounds, foods, etc. have long been known. For the cutting / separating effect, the high-frequency ultrasonic vibrations generated by the oscillating unit are used. In ultrasonic cutting, mechanical, high-frequency vibration energy is transmitted to a cutting tool, for example via a linearly excited vibration system.
Hierzu wird eine von einem Generator erzeugte Wechselspannung mit einer Ultraschallfrequenz an ein Schwingsystem weitergegeben. Das Schwingsystem kann aus einem Konverter, einem Booster oder Amplitudentransformationsstück und einer Sonotrode bestehen. In dem Konverter wird zumeist durch den Einsatz von Piezokeramiken elektrische in mechanische Energie umgewandelt. Die Schwingung wird an die Sonotrode weitergegeben. Die Sonotrode wandelt, ebenfalls bedingt durch ihre geometrische Auslegung, die Ausgangsamplitude des Konverters oder Amplitudentransformationsstücks in eine Arbeitsamplitude um.For this purpose, an alternating voltage generated by a generator is transmitted at an ultrasonic frequency to a vibration system. The oscillating system may consist of a converter, a booster or amplitude transformation piece and a sonotrode. In the converter is usually converted by the use of piezoceramics electrical energy into mechanical energy. The vibration is passed on to the sonotrode. The sonotrode, also due to its geometric design, converts the output amplitude of the converter or amplitude transformation piece into a working amplitude.
Die Sonotrode wird mit einem Schneidwerkzeug, zum Beispiel einer Klinge oder einem Messer, in Kontakt mit dem zu trennenden Material gebracht. Das Schneidwerkzeug kann einteilig mit der Sonotrode ausgeführt sein. Das Werkzeug umfasst in der Regel ein Schneidende, welches sich abnutzt. Bevorzugt ist daher das Werkzeug als separates Teil an die Sonotrode montierbar, es kann zum Beispiel angeschraubt werden. Das Werkzeug kann dann als Verschleissteil ausgetauscht werden.The sonotrode is brought into contact with the material to be separated 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 usually includes a cutting end which wears down. Preferably, therefore, the tool can be mounted as a separate part of the sonotrode, it can for Example be screwed on. The tool can then be replaced as a wear part.
Beispielsweise kann eine axiale Schraubverbindung vorgesehen sein, wie sie beispielsweise in
Eine andere Befestigungsmöglichkeit besteht darin, am frei schwingenden Ende der Sonotrode einen Schlitz anzubringen, in den ein Befestigungsende eines Schneidwerkzeugs eingeschoben wird. Das Schneidwerkzeug wird mit einer Schraube fixiert, die quer zur Einschubrichtung des Werkzeugs durch die Sonotrode geführt wird. Damit das Werkzeug gut gesichert ist, weist das Befestigungsende entweder ein Loch auf, durch welches die Schraube führen kann oder zumindest eine Ausnehmung, mit der es bis an die Schraube herangeführt werden kann. Das Befestigungsende des Werkzeugs und der Schlitz in der Sonotrode können dabei so geformt sein, dass ein Grossteil des Werkzeugs an der Innenfläche des Schlitzes anliegt, wie dies zum Beispiel in
Die Druckschrift
Die Lage des Schneidwerkzeugs in der Sonotrode wird bei den bekannten Ultraschallschneidvorrichtungen im Wesentlichen durch den Anschlag des Befestigungsendes an der Schraube und durch den Kontakt des Befestigungsendes mit den Wänden des Schlitzes beschränkt. Dies legt die Position des Werkzeugs allerdings noch nicht eindeutig fest. Zudem kann das Schneidwerkzeug beispielsweise bei Erschütterungen oder bei nicht gleichmässigen Belastungen aus der Sonotrode herausrutschen oder eine Drehbewegung um die Schraube herum ausführen.The position of the cutting tool in the sonotrode is limited in the known ultrasonic cutting devices essentially by the abutment of the attachment end to the screw and by the contact of the attachment end with the walls of the slot. However, this does not determine the position of the tool yet clearly. In addition, the cutting tool can slip out of the sonotrode, for example, in case of vibrations or in case of non-uniform loads or execute a rotary movement around the screw.
Die
Das Werkzeug weist aber verglichen mit der Sonotrode eine deutlich geringere Breite auf. Für ein Messer mit einer gewünschten Schneidkante muss also eine entsprechend breitere Sonotrode zur Verfügung gestellt werden, was sich ungünstig auf die zu bewegende Masse auswirken kann.However, compared to the sonotrode, the tool has a significantly smaller width. For a knife with a desired cutting edge, therefore, a correspondingly wider sonotrode must be made available, which can adversely affect the mass to be moved.
Es besteht die Aufgabe, ein Schneidwerkzeug und eine Ultraschallschneidvorrichtung zur Verfügung zu stellen, welche die Nachteile des Bekannten überwinden, und insbesondere dafür sorgen, dass es nicht zu einer Lockerung und Überhitzung des Schneidwerkzeugs kommt.It is an object to provide a cutting tool and an ultrasonic cutting device, which overcome the disadvantages of the known, and in particular ensure that there is no loosening and overheating of the cutting tool.
Die Aufgabe wird gelöst durch ein Schneidwerkzeug für eine Ultraschallschneidvorrichtung. Das Schneidwerkzeug umfasst ein Schneidende und ein Befestigungsende zum Einschieben in einen Werkzeughalter oder eine Sonotrode. Das Schneidende wird bei Benutzung mit dem zu trennenden Werkstück in Kontakt gebracht. Es kann eine geschärfte Spitze und/oder eine oder mehrere geschärfte Kanten aufweisen.The object is achieved by a cutting tool for an ultrasonic cutting device. The cutting tool includes a cutting end and a mounting end for insertion into a Tool holder or a sonotrode. The cutting end is brought into contact with the workpiece to be cut in use. It may have a sharpened tip and / or one or more sharpened edges.
Das Schneidende und das Befestigungsende können aus unterschiedlichen Materialien gefertigt sein. Bevorzugt ist das Schneidwerkzeug einteilig und/oder aus einem Material, wie zum Beispiel gehärteter Werkzeugstahl, Hartmetall oder Wolfram, gefertigt.The cutting end and the attachment end may be made of different materials. Preferably, the cutting tool is in one piece and / or made of a material, such as hardened tool steel, tungsten carbide or tungsten.
Das Befestigungsende, insbesondere das gesamte Schneidwerkzeug, ist im Wesentlichen als Blatt ausgeführt. Das heisst, das Befestigungsende besitzt einen Grundkörper, der in einer Richtung eine kleinere Ausdehnung als in den dazu senkrechten Richtungen, aufweist. In einer Längsrichtung, welche das Schneidende und das Befestigungsende miteinander verbindet, und in einer dazu senkrechten Breitenrichtung hat das Befestigungsende eine grössere Ausdehnung als in einer zu diesen Richtungen senkrechten Dickenrichtung. Die Länge und Breite sind also grösser als die Dicke des Schneidwerkzeugs.The attachment end, in particular the entire cutting tool, is essentially designed as a blade. That is, the attachment end has a body having a smaller extent in one direction than in the directions perpendicular thereto. In a longitudinal direction connecting the cutting end and the attachment end, and in a width direction perpendicular thereto, the attachment end has a larger extent than in a thickness direction perpendicular to these directions. The length and width are thus greater than the thickness of the cutting tool.
Bei Benutzung führt das Schneidwerkzeug bevorzugt eine Linearschwingung in der Längsrichtung aus.In use, the cutting tool preferably performs linear oscillation in the longitudinal direction.
Erfindungsgemäss ist am Befestigungsende des Schneidwerkzeugs mindestens ein von mindestens einer Blattoberfläche des Befestigungsendes wegweisender Formschlussblock angeordnet. Der Formschlussblock weist insbesondere in die Richtung der kleinsten Ausdehnung der Befestigungsendes. Bevorzugt ist beidseitig mindestens je ein Formschlussblock vorgesehen. Die Formschlussblöcke erstrecken sich insbesondere von den gegenüber liegenden Blattoberflächen.According to the invention, at least one positive-fit block facing away from at least one blade surface of the attachment end is arranged at the attachment end of the cutting tool. The positive locking block points in particular in the direction of the smallest extension of the attachment ends. Preferably, at least one interlocking block is provided on both sides. The form-fitting blocks extend in particular from the opposite leaf surfaces.
Bevorzugt ist auf einer Blattoberfläche genau ein Formschlussblock vorgesehen. Es kann aber auch eine Reihe von Formschlussblöcken auf einer Blattoberfläche angeordnet sein.Preferably, exactly one interlocking block is provided on a sheet surface. However, it can also be arranged a number of form-fitting blocks on a sheet surface.
Der Formschlussblock kann mit einer komplementären Formschlussöffnung zusammenwirken. Während üblicherweise das Schneidwerkzeug nur mittels einer Klemmung oder Verschraubung befestigt wird, sorgt der Formschlussblock für eine zusätzliche Sicherung, die zum Beispiel verhindern kann, dass sich das Schneidwerkzeug freiruckelt und aus der Fassung an einem Werkzeughalter oder einer Sonotrode herausrutscht und/oder gegenüber der Fassung dreht.The interlocking block can interact with a complementary positive connection opening. While usually the cutting tool is fastened only by means of a clamp or screw connection, the interlocking block provides an additional safeguard, which can prevent, for example, the cutting tool from churning and slipping out of the socket on a tool holder or a sonotrode and / or rotating with respect to the socket ,
Der Formschlussblock weist insbesondere eine Stossfläche auf, mit einer Richtungskomponente in Längsrichtung.The form-fitting block has in particular a shock surface, with a directional component in the longitudinal direction.
Der Formschlussblock befindet sich am Befestigungsende, in einem Bereich, wo typischerweise ohnehin Klemmkräfte auf das Schneidwerkzeug wirken. Die Schwingung des Schneidwerkzeugs wird also nicht gestört.The interlocking block is located at the attachment end, in an area where typically clamping forces act on the cutting tool anyway. The vibration of the cutting tool is therefore not disturbed.
In einer vorteilhaften Ausführung erstreckt sich der mindestens eine Formschlussblock über die gesamte Breite der Blattoberfläche. Im Zusammenspiel mit einer komplementären Formschlussöffnung kann so das Verdrehen des Schneidwerkezeugs verhindert werden. Hat der Formschlussblock einen im Wesentlichen konstanten Querschnitt über die Breite, so ist die Masse des Formschlussblocks zudem gleichmässig über die Breite des Schneidwerkzeugs verteilt.In an advantageous embodiment, the at least one positive locking block extends over the entire width of the blade surface. In interaction with a complementary form-fit opening so twisting the Schneidzeugzeugs can be prevented. If the interlocking block has a substantially constant cross section across the width, then the mass of the interlocking block is also distributed uniformly over the width of the cutting tool.
Vorteilhafterweise erstreckt sich der mindestens eine Formschlussblock in einer Richtung senkrecht zur Längsrichtung, welche das Schneidende und das Befestigungsende verbindet. Der Formschlussblock kann dann ein Herausrutschen und ein Drehen des Schneidwerkzeugs verhindern. Das Schneidwerkzeug kann zudem seitlich in einer Richtung senkrecht zur Längsrichtung in eine entsprechende Aufnahme an einem Werkzeughalter oder in einer Sonotrode geschoben werden.Advantageously, the at least one positive locking block extends in a direction perpendicular to the longitudinal direction, which connects the cutting end and the attachment end. The Positive locking block can then prevent slipping and turning the cutting tool. The cutting tool can also be pushed laterally in a direction perpendicular to the longitudinal direction in a corresponding receptacle on a tool holder or in a sonotrode.
Beim Einsetzen nimmt das Schneidwerkzeug eine eindeutige Position ein, es erfolgt also eine Selbstzentrierung.When inserting the cutting tool takes a clear position, so there is a self-centering.
Eine einmal gewählte Position wird auch unter Beanspruchung beibehalten, so dass nur noch ein minimales Risiko für einen Ermüdungsbruch besteht. Ebenso verhindert der feste Sitz, dass es zu einer unerwünschten Überhitzung kommt, welche zu einem vorzeitigen Verschleiss des Schneidwerkzeugs führen könnte und einen negativen thermischen Einfluss auf das Schnittgut haben könnte.Once a position has been selected, it is maintained under stress, leaving only a minimal risk of fatigue failure. Likewise, the tight fit prevents unwanted overheating, which could lead to premature wear of the cutting tool and could have a negative thermal impact on the clippings.
Der feste Sitzt erlaubt auch das Schneiden mit höheren Amplituden.The tight fit also allows cutting with higher amplitudes.
Die Erlangung des festen Sitzes mit einem Formschlussblock ist eine einfach durchzuführende Massnahme und benötigt typischerweise keine höheren Herstellungskosten, da die Anformung des Formschlussblocks je nach Profil ohne grösseren Aufwand erreicht werden kann.Obtaining the tight fit with a positive locking block is an easy to implement measure and typically does not require higher production costs, since the formation of the positive locking block can be achieved depending on the profile without much effort.
Der mindestens eine Formschlussblock kann am Rand eine Abschrägung aufweisen, die ein Einführen des Schneidwerkzeugs in eine Aufnahme erleichtert.The at least one interlocking block may have a bevel at the edge, which facilitates insertion of the cutting tool into a receptacle.
Formschlussblöcke können spiegelsymmetrisch zueinander angeordnet sein. Dabei können insbesondere zwei auf gegenüberliegenden Blattoberflächen angeordnete Formschlussblöcke spiegelsymmetrisch zueinander sein. Insbesondere ist das gesamte Schneidwerkzeug bis auf das Schneidende spiegelsymmetrisch ausgebildet.Forming blocks can be arranged mirror-symmetrically to each other. In particular, two positively locking blocks arranged on opposite leaf surfaces can be mirror-symmetrical to each other. In particular, the entire cutting tool is formed with mirror symmetry except for the cutting end.
Die Spiegelsymmetrie besteht bezüglich mindestens einer Ebene, die parallel zu der Längsrichtung verläuft, also der Richtung, welche das Schneidende und das Befestigungsende verbindet.The mirror symmetry exists with respect to at least one plane that is parallel to the longitudinal direction, that is, the direction connecting the cutting end and the attachment end.
Bevorzugt besteht die Spiegelsymmetrie bezüglich zweier senkrecht zueinander stehender Ebenen, wobei eine der Spiegelebenen parallel zur Längsrichtung und zur Breitenrichtung ist und eine der Spiegelebenen parallel zur Längsrichtung und zur Dickenrichtung ist.Preferably, the mirror symmetry with respect to two mutually perpendicular planes, wherein one of the mirror planes is parallel to the longitudinal direction and the width direction and one of the mirror planes is parallel to the longitudinal direction and the thickness direction.
Damit ergibt sich eine günstige Massenverteilung für Längsschwingungen und das Risiko von Transversalschwingungen wird minimiert.This results in a favorable mass distribution for longitudinal vibrations and the risk of transversal vibrations is minimized.
Bevorzugt weist der mindestens eine Formschlussblock einen trapezförmigen Querschnitt auf.Preferably, the at least one positive locking block has a trapezoidal cross section.
Der Querschnitt ergibt sich vorzugsweis in einer Ebene entlang der Längsrichtung, welche das freie Ende und das Befestigungsende verbindet, und bevorzugt senkrecht zu der Breitenrichtung, also in einer Ebene parallel zur Dickenrichtung, in welcher das Befestigungsende bevorzugt die geringste Ausdehnung aufweist.The cross-section preferably results in a plane along the longitudinal direction, which connects the free end and the attachment end, and preferably perpendicular to the width direction, ie in a plane parallel to the thickness direction, in which the attachment end preferably has the smallest extent.
Insbesondere liegt die längere Grundlinie an der Blattoberfläche an und die kürzere Grundlinie weist von der Blattoberfläche weg.In particular, the longer baseline abuts the leaf surface and the shorter baseline points away from the leaf surface.
Der Querschnitt hat bevorzugt die Form eines gleichschenkligen Trapezes.The cross section preferably has the shape of an isosceles trapezium.
Insbesondere schliessen die Schenkel des Trapezes mit der Blattoberfläche einen Winkel von 90° oder 45° ein.In particular, the legs of the trapezium with the leaf surface form an angle of 90 ° or 45 °.
Das Schneidwerkzeug kann dann ohne grösseren Aufwand hergestellt werden.The cutting tool can then be made without much effort.
In einer vorteilhaften Ausbildung des Schneidwerkzeugs ist an dem Ende des Befestigungsendes eine Ausnehmung vorgesehen ist, die insbesondere in Längsrichtung weist. Diese erlaubt, dass das Schneidwerkzeug nah an eine Befestigungsschraube in einer Sonotrode oder in einem Werkzeughalter gebracht werden kann. Die Ausnehmung weist zum Beispiel eine runde Kontur auf, um sich an den runden Durchmesser der Schaube anzupassen. Beidseitig der Ausnehmung verbleiben Klemmflächen.In an advantageous embodiment of the cutting tool, a recess is provided at the end of the attachment end, which has in particular 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, for example, a round contour in order to adapt to the round diameter of the screw. Both sides of the recess remain clamping surfaces.
Die Länge des Schneidwerkzeugs beträgt beispielsweise zwischen 20 und 30 mm.The length of the cutting tool is for example between 20 and 30 mm.
Die Breite des Schneidwerkzeugs beträgt beispielsweise 7-12 mm.The width of the cutting tool is for example 7-12 mm.
Die Dicke des Schneidwerkzeugs beträgt beispielsweise 0.05-3mm.The thickness of the cutting tool is for example 0.05-3mm.
Der mindestens eine Formschlussblock erstreckt sich beispielsweise 1-3mm von der Blattoberfläche weg.The at least one positive locking block extends, for example, 1-3 mm away from the blade surface.
In einer vorteilhaften Ausführungsform verjüngt sich die Breite und/oder die Dicke des Schneidwerkzeugs am Übergang von dem Befestigungsende zu dem Schneidende, bevorzugt die Breite um 0.5-1mm und/oder die Dicke um 0.25-0.45mm.In an advantageous embodiment, the width and / or the thickness of the cutting tool tapers at the transition from the attachment end to the cutting end, preferably the width by 0.5-1 mm and / or the thickness by 0.25-0.45 mm.
Die Aufgabe wird ausserdem gelöst durch eine Ultraschallschneidvorrichtung mit einer Sonotrode und einem Schneidwerkzeug, insbesondere wie oben beschrieben.The object is also achieved by an ultrasonic cutting device with a sonotrode and a cutting tool, in particular as described above.
Das Schneidwerkzeug umfasst ein Schneidende und ein Befestigungsende.The cutting tool includes a cutting end and a mounting end.
Die Sonotrode weist mindestens ein Schraubloch auf, das zum Aufnehmen einer Schraube zum Fixieren des Schneidwerkzeugs an der Sonotrode dient.The sonotrode has at least one screw hole which serves to receive a screw for fixing the cutting tool to the sonotrode.
Vom Befestigungsende des Schneidwerkzeugs erstreckt sich mindestens ein Formschlussblock weg und an der Sonotrode ist mindestens eine komplementäre Formschlussausnehmung vorgesehen. Der Formschlussblock bildet mit der Formschlussausnehmung einen Formschluss, wenn das Schneidwerkzeug in der Sonotrode montiert ist. Der Formschluss wirkt zumindest in einer Längsrichtung, welche das Schneidende und das Befestigungsende verbindet.From the attachment end of the cutting tool, at least one interlocking block extends away and at the sonotrode at least one complementary form-fitting recess is provided. The interlocking block forms a positive connection with the form-fitting recess when the cutting tool is mounted in the sonotrode. The positive connection acts at least in a longitudinal direction which connects the cutting end and the attachment end.
Der Formschlussblock weist insbesondere eine Anschlagfläche auf mit einer Richtungskomponente in Längsrichtung, und die Formschlussöffnung weist insbesondere eine dazu komplementäre Anschlagsfläche auf.The positive locking block has, in particular, a stop surface with a direction component in the longitudinal direction, and the positive connection opening has, in particular, a stop surface complementary thereto.
Während die Schraube ein Halten oder Klemmen bewirkt, legt die Formschlussverbindung die Lage des Schneidwerkezeugs in der Sonotrode zumindest bezüglich der Längsrichtung eindeutig fest. Bevorzugt sind der Formschlussblock und die Formschlussausnehmung so ausgebildet, dass auch eine relative Winkelausrichtung zwischen Sonotrode und Schneidwerkzeug bezüglich der Schraubachse festgelegt wird. Dazu erstrecken sich Formschlussblock und die Formschlussausnehmung beispielweise in einer Richtung senkrecht zur Längsrichtung.While the screw causes a hold or jamming, the interlocking connection clearly defines the position of the cutting tool in the sonotrode, at least with respect to the longitudinal direction. Preferably, the interlocking block and the form-fitting recess are formed so that a relative angular alignment between the sonotrode and cutting tool with respect to the screw axis is set. For this purpose, positive locking block and the form-fitting recess extend, for example, in a direction perpendicular to the longitudinal direction.
Die Sonotrode kann eine Anlegefläche aufweisen, an welcher das Schneidwerkzeug angelegt wird und mit einer Schraube fixiert wird.The sonotrode may have a contact surface on which the cutting tool is applied and fixed with a screw.
In einer bevorzugten Ausführung der Erfindung weist die Sonotrode an einem Ende zwei Schenkel auf, die einen Schlitz bilden, in welchen das Befestigungsende des Schneidwerkzeugs einschiebbar ist.In a preferred embodiment of the invention, the sonotrode has at one end two legs which form a slot into which the attachment end of the cutting tool can be inserted.
In den Schenkeln sind Schraublöcher angeordnet zum Aufnehmen einer Schraube, die für eine Klemmkraft der Schenkel sorgt.In the legs screw holes are arranged for receiving a screw which provides a clamping force of the legs.
An den Innenseiten der Schenkel der Sonotrode ist die mindestens eine komplementäre Formschlussausnehmung vorgesehen.On the inner sides of the legs of the sonotrode the at least one complementary form-fitting recess is provided.
In dieser Ausführung bilden Sonotrode und Schneidwerkzeuge eine symmetrische Anordnung. Das Befestigungsende des Schneidwerkzeugs ist von den Schenkeln der Sonotrode eingefasst.In this embodiment, sonotrode and cutting tools form a symmetrical arrangement. The attachment end of the cutting tool is bordered by the legs of the sonotrode.
In einer vorteilhaften Ausführung ist das Befestigungsende, insbesondere das gesamte Schneidwerkzeug, im Wesentlichen als Blatt ausgeführt. Bevorzugt erstrecken sich von den Blattoberflächen beidseitig Formschlussblöcke weg, die weiter bevorzugt, wie oben beschrieben, einen trapezförmigen Querschnitt aufweisen. An den Innenseiten der Schenkel befinden sich dazu komplementäre Formschlussöffnungen.In an advantageous embodiment, the attachment end, in particular the entire cutting tool, is designed essentially as a blade. Forming blocks preferably extend from the sheet surfaces on both sides, which further preferably have a trapezoidal cross section, as described above. On the inner sides of the legs are complementary positive openings.
Der Schlitz in der Sonotrode ist dann ebenso symmetrisch ausgebildet wie das Befestigungsende des Schneidwerkzeugs, was sich günstig auf die Stabilität der Linearschwingungen auswirkt.The slot in the sonotrode is then formed as symmetrical as the attachment end of the cutting tool, which has a favorable effect on the stability of the linear oscillations.
Vorteilhafterweise weist der Schlitz am festen Ende der Schenkel eine Aufweitung auf. Die Länge und Breite der Aufweitung bestimmt die Flexibilität der Schenkel. Diese sollen einerseits ein leichtes Einschieben des Schneidwerkzeugs erlauben, andererseits erlauben, dass eine zuverlässige Klemmkraft von der Schraube aufgebracht werden kann. Bevorzugt besitzt die Aufweitung eine abgerundete Innenkontur, um Einkerbungen zu verhindern.Advantageously, the slot at the fixed end of the legs on a widening. The length and width of the expansion determines the flexibility of the legs. These are on the one hand allow easy insertion of the cutting tool, on the other hand allow a reliable clamping force can be applied by the screw. The expansion preferably has a rounded inner contour to prevent notches.
An den freien Enden besitzen die Schenkel innenseitig Anlageflächen, an denen die Blattoberfläche des Schneidwerkzeugs anliegen kann.At the free ends of the legs have on the inside abutment surfaces on which the blade surface of the cutting tool can rest.
Einer der Schenkel kann weniger Masse als der andere Schenkel besitzen. Insbesondere weist der leichtere Schenkel an der Aussenseite eine Abflachung auf, so dass die Anlagefläche und der Kontakt zwischen Schneidwerkzeug und Sonotrode nicht beeinträchtigt wird.One of the legs may have less mass than the other leg. In particular, the lighter leg on the outside of a flattening, so that the contact surface and the contact between the cutting tool and sonotrode is not affected.
Die Massendifferenz trägt bevorzugt zur Kompensation des Gewichtes des Schraubenkopfes bei, so dass die Längsschwingung durch die Asymmetrie einer Befestigungsschraube, die ein Gewinde und einen in der Regel verdickten Kopf aufweist, nicht gestört wird.The mass difference preferably contributes to the compensation of the weight of the screw head, so that the longitudinal vibration is not disturbed by the asymmetry of a fastening screw which has a thread and a generally thickened head.
Ein Schenkel kann ein Schraubloch mit einer Schraubenkopfsenkung aufweisen. Die Schraubenkopfsenkung trägt zur Massenreduktion bei und kompensiert ebenfalls zumindest einen Teil des Gewichtes des Schraubenkopfs.A leg may have a screw hole with a screw head countersink. The screw head depression contributes to the mass reduction and also compensates for at least a part of the weight of the screw head.
Insbesondere ist das Schraubloch mit Schraubenkopfsenkung an einem leichteren Schenkel vorgesehen. Der Schraubenkopf kann dann teilweise versenkt werden, sodass noch ein Rest des Kopfes mit einer äusseren Angriffsfläche für ein Werkzeug von der Sonotrode absteht.In particular, the screw hole is provided with screw head depression on a lighter leg. The screw head can then be partially sunk, so that even a remainder of the head protrudes with an outer attack surface for a tool from the sonotrode.
Bevorzugt weist mindestens ein Schraubloch ein Innengewinde auf. Es ist somit keine Mutter zum Befestigen der Schraube notwendig. Bevorzugt befindet sich nur ein Gewinde in dem Schraubloch an einem schwereren Schenkel. Ein Schraubloch an einem schweren Schenkel dient zum Halten der Schraube, ein Schraubloch an einem leichteren Schenkel zum Anlegen und/oder Versenken des Schraubkopfes.Preferably, at least one screw hole has an internal thread. There is thus no nut necessary for fastening the screw. Preferably, there is only one thread in the screw hole on a heavier leg. A screw hole on a heavy one Leg serves to hold the screw, a screw hole on a lighter leg for applying and / or sinking the screw head.
In einer vorteilhaften Ausbildung der Ultraschallschneidvorrichtung erstrecken sich der Formschlussblock und die Formschlussausnehmung in einer Richtung senkrecht zur Längsrichtung, sodass das Schneidwerkzeug seitlich in die Sonotrode einschiebbar ist.In an advantageous embodiment of the ultrasonic cutting device, the positive locking block and the form-locking recess extend in a direction perpendicular to the longitudinal direction, so that the cutting tool can be inserted laterally into the sonotrode.
Bevorzugt umfasst die Ultraschallschneidvorrichtung eine Schraube zum Einführen in die Schraublöcher und zum Erzeugen einer Klemmkraft zwischen den Schenkeln. Die Schraube besitzt insbesondere einen Kopf, der bevorzugt eine Ausnehmung aufweist.Preferably, the ultrasonic cutting device comprises a screw for insertion into the screw holes and for generating a clamping force between the legs. The screw has in particular a head, which preferably has a recess.
Vorteilhafterweise ist der Kopf verjüngt, insbesondere konisch, ausgeführt. Die Schraube kann dann einen festen Sitz in dem Schraubenloch einnehmen, womit Reibung und damit Wärmentwicklung weitgehend verhindert wird.Advantageously, the head is tapered, in particular conical executed. The screw can then take a firm seat in the screw hole, whereby friction and thus heat development is largely prevented.
Die Schraube weist ausserdem bevorzugt einen zylindrischen Abschnitt auf, der einer optimalen Positionierung dient.The screw also preferably has a cylindrical portion which serves for optimum positioning.
Die Erfindung wird nachfolgend anhand von in Figuren gezeigten Beispielen erläutert.The invention will be explained below with reference to examples shown in FIGS.
Es zeigen:
- Fig. 1
- ein Schneidwerkzeug in perspektivischer Ansicht;
- Fig. 2
- das Schneidwerkzeug in einer ersten Draufsicht;
- Fig. 3
- das Schneidwerkzeug in einer zweiten Draufsicht;
- Fig. 4
- ein Befestigungsende in einer Schnittansicht;
- Fig. 5
- eine Ultraschallschneidvorrichtung in perspektivischer Ansicht;
- Fig. 6
- ein freies Ende einer Sonotrode in einer ersten Draufsicht;
- Fig. 7
- das freie Ende der Sonotrode in einer Schnittansicht;
- Fig. 8
- eine Befestigungsschraube in Schnittansicht.
- Fig. 1
- a cutting tool in perspective view;
- Fig. 2
- the cutting tool in a first plan view;
- Fig. 3
- the cutting tool in a second plan view;
- Fig. 4
- an attachment end in a sectional view;
- Fig. 5
- an ultrasonic cutting device in a perspective view;
- Fig. 6
- a free end of a sonotrode in a first plan view;
- Fig. 7
- the free end of the sonotrode in a sectional view;
- Fig. 8
- a fastening screw in sectional view.
Das Schneidwerkzeug 1 umfasst ein Schneidende 2 und ein Befestigungsende 3 zum Einschieben in einen Werkzeughalter oder eine Sonotrode 11 (siehe
Das Schneidwerkzeug 1 ist im Wesentlichen als Blatt ausgeführt, wobei die Ausdehnungen in Längsrichtung 25, welche das Schneidende 2 und ein Befestigungsende 3 verbindet, und der dazu senkrechten Breitenrichtung 26 grösser als die Dicke 29 in einer zu beiden Richtungen 25, 26 senkrechten Dickenrichtung 27 sind.The
Am Befestigungsende 3 des Schneidwerkzeugs 1 sind von den gegenüberliegenden Blattoberflächen 8 wegweisende Formschlussblöcke 4 angeordnet.At the
An dem von dem Schneidende 2 wegweisenden Ende des Befestigungsendes 3 ist eine Ausnehmung 7 vorgesehen, so dass das Schneidwerkzeug nah an eine Befestigungsschraube 15 (siehe
Die Formschlussblöcke 4 sind spiegelsymmetrisch zueinander angeordnet. Bis auf das Schneidende 2 ist das gesamte Schneidwerkzeug 1 spiegelsymmetrisch ausgebildet bezüglich einer Ebene 5, die parallel zu der Richtung 25 verläuft, welche das Schneidende 2 und das Befestigungsende 3 verbindet.The
Die Dicke 29 des Schneidwerkzeugs 1 verjüngt sich an einem Übergang 31 von dem Befestigungsende 3 zum Schneidende 2.The
Die Länge 35 des Schneidwerkzeugs 1 beträgt beispielsweise 20 bis 30 mm.The
Die maximale Dicke 29 des Schneidwerkzeugs 1 beträgt beispielsweise 0.05 bis 3mm.The
Die Breite des Schneidwerkzeugs 1 verjüngt sich am Übergang 31 von dem Befestigungsende 3 zum Schneidende 2.The width of the
Die maximale Breite 30 des Schneidwerkzeugs (1) beträgt 7 bis 12 mm.The
Zum Fixieren des Schneidwerkzeugs 1 ist eine Schraube 15 vorgesehen.For fixing the
Die Formschlussblöcke 4 des Schneidwerkzeugs bilden mit komplementären Formschlussausnehmungen 17 an der Sonotrode 11 einen Formschluss.The form-fitting
Die Sonotrode 11 weist an einem Ende zwei Schenkel 12a, 12b auf, die einen Schlitz 13 bilden, in welchen das Befestigungsende 3 des Schneidwerkzeugs 1 in einer Einschieberichtung 34, welcher der Breitenrichtung 26 entspricht (siehe
Die Formschlussausnehmungen 17 sind an den Innenseiten 16 der Schenkel 12a, 12b vorgesehen.The positive engagement recesses 17 are provided on the
Der Schlitz 13 weist an den festen Enden der Schenkel 12a, 12b eine Aufweitung 18 auf, die eine abgerundete Innenkontur 19 besitzt.The
Einer der Schenkel 12a besitzt an der Aussenseite eine Abflachung 20, und weist somit weniger Masse als der andere Schenkel 12b auf. Bei einer eingesetzten Schraube 15 (siege
In den Schenkeln 12a, 12b sind Schraublöcher 14a, 14b angeordnet zum Aufnehmen einer Schraube 15 (siehe
In dem Schenkel 12a, der aufgrund der Abflachung 20 weniger Masse aufweist, ist zusätzlich eine konische Schraubenkopfsenkung 21 vorgesehen, die in eine zylindrisch geformte Ausnehmung 36 übergeht. Die Form des Schraubenlochs 14a erlaubt eine genaue Zentrierung und Positionierung der Schraube.In the
Das Schraubloch 14b an dem schwereren Schenkel 12b weist ein Innengewinde 22 auf.The
Claims (16)
dadurch gekennzeichnet, dass
das Befestigungsende (3), insbesondere das gesamte Schneidwerkzeug, im Wesentlichen als Blatt ausgeführt ist und am Befestigungsende (3) des Schneidwerkzeugs (1) mindestens ein von mindestens einer Blattoberfläche (8) des Befestigungsendes (3) wegweisender Formschlussblock (4) angeordnet ist, bevorzugt beidseitig je ein Formschlussblock (4).Cutting tool (1) for an ultrasonic cutting device (10), wherein the cutting tool (1) comprises a cutting end (2) and a fixing end (3) for insertion into a tool holder or sonotrode (11),
characterized in that
the attachment end (3), in particular the entire cutting tool, is designed essentially as a blade and at least one positive-locking block (4) pointing away from at least one blade surface (8) of the attachment end (3) is arranged on the attachment end (3) of the cutting tool (1); preferably on both sides each a positive locking block (4).
dadurch gekennzeichnet, dass sich vom Befestigungsende (3) des Schneidwerkzeugs (1) mindestens ein Formschlussblock (4) wegerstreckt und an der Sonotrode (10) mindestens eine komplementäre Formschlussausnehmung (17) vorgesehen ist, so dass der Formschlussblock (4) mit der Formschlussausnehmung (17) einen Formschluss zumindest in einer Längsrichtung (), welche das Schneidende (2) und das Befestigungsende (3) verbindet, bildet, wenn das Schneidwerkzeug (1) in der Sonotrode (11) montiert ist.Ultrasonic cutting device comprising a sonotrode (11) and a cutting tool (1), in particular according to one of claims 1-7, wherein the cutting tool (1) comprises a cutting end (2) and a fixing end (3), wherein the sonotrode (11) at least one Screw hole (14a, 14b) for receiving a screw (15) for fixing the cutting tool to the sonotrode (11),
characterized in that at least one positive locking block (4) extends away from the attachment end (3) of the cutting tool (1) and at least one complementary positive engagement recess (17) is provided on the sonotrode (10) so that the positive locking block (4) engages with the positive engagement recess (16). 17) forms a positive locking at least in a longitudinal direction (12) connecting the cutting end (2) and the attachment end (3) when the cutting tool (1) is mounted in the sonotrode (11).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP18158735.3A EP3530425B1 (en) | 2018-02-27 | 2018-02-27 | Ultrasonic vibration cutting device and cutting tool for an ultrasonic vibration cutting device |
Applications Claiming Priority (1)
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EP18158735.3A EP3530425B1 (en) | 2018-02-27 | 2018-02-27 | Ultrasonic vibration cutting device and cutting tool for an ultrasonic vibration cutting device |
Publications (2)
Publication Number | Publication Date |
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EP3530425A1 true EP3530425A1 (en) | 2019-08-28 |
EP3530425B1 EP3530425B1 (en) | 2020-10-28 |
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EP18158735.3A Active EP3530425B1 (en) | 2018-02-27 | 2018-02-27 | Ultrasonic vibration cutting device and cutting tool for an ultrasonic vibration cutting device |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0277823A1 (en) | 1987-02-04 | 1988-08-10 | Taga Electric Co. Ltd. | Ultrasonic vibration cutting device |
JP2000326291A (en) | 1999-05-19 | 2000-11-28 | Sonotec Co Ltd | Processing blade holder |
EP1525961A1 (en) * | 2003-10-20 | 2005-04-27 | Kraft Foods Holdings, Inc. | Ultrasonic slitter |
JP2010167535A (en) | 2009-01-23 | 2010-08-05 | Sonotec Co Ltd | Machining-tool holder |
JP2011125972A (en) | 2009-12-18 | 2011-06-30 | Seidensha Electronics Co Ltd | Ultrasonic cutter device |
WO2011130024A1 (en) * | 2010-04-12 | 2011-10-20 | Branson Ultrasonics Corporation | Ultrasonic system and method for cutting soft materials and ultrasonic horn blade therefor |
-
2018
- 2018-02-27 EP EP18158735.3A patent/EP3530425B1/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0277823A1 (en) | 1987-02-04 | 1988-08-10 | Taga Electric Co. Ltd. | Ultrasonic vibration cutting device |
JP2000326291A (en) | 1999-05-19 | 2000-11-28 | Sonotec Co Ltd | Processing blade holder |
EP1525961A1 (en) * | 2003-10-20 | 2005-04-27 | Kraft Foods Holdings, Inc. | Ultrasonic slitter |
JP2010167535A (en) | 2009-01-23 | 2010-08-05 | Sonotec Co Ltd | Machining-tool holder |
JP2011125972A (en) | 2009-12-18 | 2011-06-30 | Seidensha Electronics Co Ltd | Ultrasonic cutter device |
WO2011130024A1 (en) * | 2010-04-12 | 2011-10-20 | Branson Ultrasonics Corporation | Ultrasonic system and method for cutting soft materials and ultrasonic horn blade therefor |
Also Published As
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EP3530425B1 (en) | 2020-10-28 |
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