EP0369390A2 - Knife with a straight cutting portion - Google Patents
Knife with a straight cutting portion Download PDFInfo
- Publication number
- EP0369390A2 EP0369390A2 EP89121045A EP89121045A EP0369390A2 EP 0369390 A2 EP0369390 A2 EP 0369390A2 EP 89121045 A EP89121045 A EP 89121045A EP 89121045 A EP89121045 A EP 89121045A EP 0369390 A2 EP0369390 A2 EP 0369390A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- cutting knife
- knife according
- receptacle
- straight line
- 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
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims abstract description 11
- 239000011324 bead Substances 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000010355 oscillation Effects 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B7/00—Hand knives with reciprocating motor-driven blades
Definitions
- the invention relates to a U-shaped angled cutting knife for cutting tools for severing adhesive beads in window panes of motor vehicles, which can be driven around a pivot point with a small pivoting angle and high frequency, comprising a fastening part having a receptacle that can be connected to a drive shaft coaxial with the pivot point, as the first U- Leg, an intermediate part as the middle U-leg and a cutting part as the second U-leg.
- U-shaped angled cutting knives are known, for example, from German Patent 33 24 676 and European Patent 0 141 035, the former relating to a crescent-shaped cutting part which points away from the clamping point, and the latter a crescent-shaped cutting part which serves as the clamping point points out.
- a crescent-shaped cutting part has the after partly that problems can arise when cutting the adhesive bead in the corner region of a frame in a motor vehicle, since the sickle curvature prevents the adhesive bead from being completely severed over its entire width in the corner region.
- the invention is therefore based on the object of improving a cutting knife of the generic type in such a way that, with the same cutting suitability as the crescent-shaped cutting knife, it is also suitable for completely severing the adhesive bead in a corner region over its entire width.
- This object is achieved in that the cutting part is directed straight.
- the advantage of the solution according to the invention is to be seen in the fact that it can be cut into corner areas in a simple manner, surprisingly the cutting properties compared to sickle-shaped curved cutting parts in the U-shaped knives are not significantly worse.
- Particularly advantageous cutting properties with the U-shaped knives with a straight cutting part can be achieved if the cutting part forms an angle of approximately - 35 ° to + 15 °, viewed clockwise, with a reference straight line, if the reference straight line is centered through a foot of the Cutting part runs and if the distance of the reference straight line from the pivot point at least corresponds approximately to 1.5 times the radius of the recording.
- this can also be determined by the feature that the intermediate part runs in a plane and that the reference line is perpendicular to this plane.
- the intermediate part is aligned relative to the cutting part, which is particularly advantageous if there is a small space between the window pane and the frame of the motor vehicle through which the intermediate part must be led out, so that when the intermediate part runs in one plane, this plane can always be guided essentially parallel to a side edge of the window pane and the cutting part is always in the correct angular position due to its orientation relative to the plane of the intermediate part.
- a tip of the cutting part reaches a maximum of approximately the height of the receptacle, that is, the tip does not protrude significantly beyond the receptacle. Even if the longest possible cutting part is desirable, the tip is preferably at the level of the receptacle and the cutting part then extends to its base, which is further away from the fulcrum.
- Grooving can also be facilitated by the cutting part tapering towards the tip.
- the cutting knife according to the invention can be produced particularly easily if the fastening part, the intermediate part and the cutting part are made from bent flat material.
- the bending can also be carried out most simply when bending lines between the fastening part and the intermediate part and between the intermediate part and the cutting part run parallel to one another.
- the distance of the reference straight line from the fulcrum it has only been assumed in the exemplary embodiments described so far that this should be at least 1.5 times the radius of the receptacle.
- the distance of the reference straight line from the fulcrum also has an effect on the movements of the cutting part with a fixed pivot angle of the oscillation drive, it is advantageous if the distance of the reference straight line from the fulcrum corresponds to at least twice the radius of the receptacle.
- the distance of the reference line from the fulcrum is advantageously less than five times the radius of the receptacle, but preferably even less than four times the radius of the receptacle.
- Particularly favorable results with regard to the cutting performance of the cutting knives according to the invention were achieved when the distance of the reference straight line from the fulcrum corresponds approximately to three times the radius of the receptacle.
- the intermediate part has a Plastic mass is coated, which serves as a support and guide stop and prevents damage to the frame due to its lower hardness than the frame of the motor vehicle.
- An embodiment designated as a whole by 10 of a cutting knife according to the invention comprises, as shown in FIGS. 1 and 2, a first U-leg 12 designed as a fastening part, which merges into a middle leg of the U, which is designed as an intermediate part 14, on which a Cutting part 16 trained second U-leg is held.
- the fastening part 12 and the cutting part 16 lie in two planes 18 and 20, which are almost parallel to each other except for deviations of a few degrees who are aligned. In the embodiment shown in Fig. 2, the planes are inclined at an angle of approximately 3 ° to each other.
- the fastening part 12 comprises a receptacle 22 with a toothed inner contour 24, so that the fastening part 12 with the receptacle 22 in a form-fitting manner - as shown in Fig. 3 - on a drive shaft 25 one designated as a whole by 26 Oscillation drive is mountable.
- the oscillation drive 26 pivots the drive shaft 25 at a high frequency in the range from 10,000 to 20,000 vibrations per minute and small pivoting angle, preferably between 1 ° and 5 °.
- An axis of rotation 28 is concentric with a center of the receptacle 22, which is also a fulcrum 30 of the cutting knife 10.
- the fastening part 12 is in turn made of flat material and bent along a bending line 32 to the intermediate part 14, which is also made of flat material.
- the intermediate part 14 lies in a plane 34 which includes a right angle with the plane 20 in which the cutting part 16 lies and almost a right angle with the plane 18 in which the fastening part 12 lies.
- the intermediate part 14 consisting of flat material is bent along a bending line 36 to the cutting part 16, which extends from a foot 38 lying at the bending line 36 to a tip 40.
- the cutting part 16 is offset with respect to the fulcrum 30 in such a way that a reference straight line 42 intersecting the foot 38 in the middle, which is preferably perpendicular to the plane 34 in which the intermediate part 14 lies, in one Distance a from the fulcrum 30 is arranged.
- the distance a is approximately 3 times the radius r of the receptacle 22, but it can also be in the range from 1.5 to 5 times.
- the cutting part 16 with its center line 44 lying in the plane 20 can still be inclined up to an angle ⁇ and, in the exemplary embodiment shown in FIG. 1, has an inclination angle ⁇ of approximately -8 °.
- the cutting part is preferably ground on both sides and thus carries cutting edges 46 and 48 on both sides, which are arranged symmetrically to the center line 44 and are even straight along their course from the foot 38 to the tip 40.
- the cutting part 16 preferably tapers towards the tip 40, so that the two cutting edges 46 and 48 do not run parallel to one another, but instead form an acute angle with one another.
- the grinding of the cutting part 16 is preferably carried out so that it - as shown in Fig. 4 - has a spherical shape in cross section.
- the cutting knife 10 is inserted into the adhesive bead 50 such that its cutting part 16 runs therein and the intermediate part 14 is in an intermediate space 56 between a side edge 58 of the window pane 52 and the frame 54 extends outwards.
- the oscillation drive 26 holding the knife with the fastening part 12 is now guided along the side edge 58 of the window pane 52 in such a way that the cutting part 16 always runs in the adhesive bead 50 and cuts through the pivoting oscillating movement of the cutting knife 10.
- the intermediate part 14 is preferably provided with a sheath 60 made of plastic, which can also serve as a support stop for the intermediate part 14.
- the covering 60 can be applied, for example, in the context of a vortex sintering process.
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- Knives (AREA)
- Nonmetal Cutting Devices (AREA)
Abstract
Es wird ein U-förmig gewinkeltes Schneidmesser (10) für Schneidwerkzeuge zum Durchtrennen von Klebewulsten bei Fensterscheiben von Kraftfahrzeugen vorgeschlagen, welches um einen Drehpunkt (30) mit kleinem Schwenkwinkel und hoher Frequenz antreibbar ist, umfassend ein eine mit einer zum Drehpunkt koaxialen Antriebswelle (28) verbindbare Aufnahme aufweisendes Befestigungsteil (12) als ersten U-Schenkel, ein Zwischenteil (14) als mittleren U-Schenkel und ein Schneidteil (16) als zweiten U-Schenkel, daß derart zu verbessern ist, daß dieses bei gleicher Schneidtauglichkeit wie die sichelförmig gekrümmten Schneidmesser sich auch dazu eignet, den Klebewulst in einem Eckbereich vollständig über dessen ganze Breite zu durchtrennen, durch das Schneidteil (16) gerade gerichtet auszuführen.A U-shaped angled cutting knife (10) for cutting tools for severing adhesive beads on window panes of motor vehicles is proposed, which can be driven around a pivot point (30) with a small pivoting angle and high frequency, comprising a drive shaft (28 coaxial with the pivot point ) Connectable receptacle having fastening part (12) as the first U-leg, an intermediate part (14) as the middle U-leg and a cutting part (16) as the second U-leg, which can be improved in such a way that this is the same as crescent shape with the same suitability for cutting curved cutting knife is also suitable for completely cutting through the adhesive bead in a corner region over its entire width, by the cutting part (16) in a straight manner.
Description
Die Erfindung betrifft ein U-förmig gewinkeltes Schneidmesser für Schneidwerkzeuge zum Durchtrennen von Klebewulsten bei Fensterscheiben von Kraftfahrzeugen, welches um einen Drehpunkt mit kleinem Schwenkwinkel und hoher Frequenz antreibbar ist, umfassend ein eine mit einer zum Drehpunkt koaxialen Antriebswelle verbindbare Aufnahme aufweisendes Befestigungsteil als ersten U-Schenkel, ein Zwischenteil als mittleren U-Schenkel und ein Schneidteil als zweiten U-Schenkel.The invention relates to a U-shaped angled cutting knife for cutting tools for severing adhesive beads in window panes of motor vehicles, which can be driven around a pivot point with a small pivoting angle and high frequency, comprising a fastening part having a receptacle that can be connected to a drive shaft coaxial with the pivot point, as the first U- Leg, an intermediate part as the middle U-leg and a cutting part as the second U-leg.
Derartige U-förmig gewinkelte Schneidmesser sind beispielsweise aus dem deutschen Patent 33 24 676 sowie dem europäischen Patent 0 141 035 bekannt, wobei ersteres ein sichelförmig gekrümmtes Schneidteil zum Gegenstand hat, welches von der Einspannstelle wegweist, und letzteres ein sichelförmig gekrümmtes Schneidteil, welches zur Einspannstelle hinweist.Such U-shaped angled cutting knives are known, for example, from German Patent 33 24 676 and European Patent 0 141 035, the former relating to a crescent-shaped cutting part which points away from the clamping point, and the latter a crescent-shaped cutting part which serves as the clamping point points out.
Die Herstellung solcher Messer mit sichelförmig gekrümmtem Schneidteil ist jedoch aufwendig und kostenintensiv. Weiterhin hat ein sichelförmig gekrümmtes Schneidteil den Nach teil, daß sich beim Schneiden des Klebewulstes im Eckbereich eines Rahmens bei einem Kraftfahrzeug Probleme ergeben können, da die Sichelkrümmung einem vollständigen Durchtrennen des Klebewulstes über seine ganze Breite in dem Eckbereich entgegensteht.However, the manufacture of such knives with a crescent-shaped cutting part is complex and cost-intensive. Furthermore, a crescent-shaped cutting part has the after partly that problems can arise when cutting the adhesive bead in the corner region of a frame in a motor vehicle, since the sickle curvature prevents the adhesive bead from being completely severed over its entire width in the corner region.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Schneidmesser der gattungsgemäßen Art derart zu verbessern, daß dieser bei gleicher Schneidtauglichkeit wie die sichelförmig gekrümmten Schneidmesser sich auch dazu eignet, den Klebewulst in einem Eckbereich vollständig über dessen ganze Breite zu durchtrennen.The invention is therefore based on the object of improving a cutting knife of the generic type in such a way that, with the same cutting suitability as the crescent-shaped cutting knife, it is also suitable for completely severing the adhesive bead in a corner region over its entire width.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Schneidteil gerade gerichtet ist.This object is achieved in that the cutting part is directed straight.
Der Vorteil der erfindungsgemäßen Lösung ist damit darin zu sehen, daß sich mit dieser in einfacher Weise in Eckbereiche hineinschneiden läßt, wobei überraschenderweise die Schneideigenschaften gegenüber sichelförmig gekrümmten Schneidteilen bei den U-förmigen Messern nicht nennenswert schlechter sind.The advantage of the solution according to the invention is to be seen in the fact that it can be cut into corner areas in a simple manner, surprisingly the cutting properties compared to sickle-shaped curved cutting parts in the U-shaped knives are not significantly worse.
Besonders vorteilhafte Schneideigenschaften bei den U-förmigen Messern mit gerade gerichtetem Schneidteil lassen sich dann erreichen, wenn das Schneidteil mit einer Bezugsgeraden einen Winkel von ungefähr - 35° bis + 15°, im Uhrzeigersinn gesehen, einschließt, wenn die Bezugsgerade mittig durch einen Fuß des Schneidteils verläuft und wenn der Abstand der Bezugsgeraden von dem Drehpunkt mindestens ungefähr dem 1,5-fachen Radius der Aufnahme entspricht.Particularly advantageous cutting properties with the U-shaped knives with a straight cutting part can be achieved if the cutting part forms an angle of approximately - 35 ° to + 15 °, viewed clockwise, with a reference straight line, if the reference straight line is centered through a foot of the Cutting part runs and if the distance of the reference straight line from the pivot point at least corresponds approximately to 1.5 times the radius of the recording.
Alternativ zur Festlegung der Bezugsgeraden durch den Schnittpunkt mit dem Fuß des Schneidteils und dem Abstand von dem Drehpunkt kann diese auch durch das Merkmal festgelegt werden, daß das Zwischenteil in einer Ebene verläuft und daß die Bezugsgerade senkrecht auf dieser Ebene steht. In diesem Fall ist eindeutig festgelegt, wie das Zwischenteil relativ zum Schneidteil ausgerichtet ist, was insbesondere dann von Vorteil ist, wenn zwischen der Fensterscheibe und dem Rahmen des Kraftfahrzeugs ein kleiner Zwischenraum besteht, durch welchen das Zwischenteil herausgeführt werden muß, so daß dann, wenn das Zwischenteil in einer Ebene verläuft, diese Ebene stets im wesentlichen parallel zu einer Seitenkante der Fensterscheibe geführt werden kann und dabei das Schneidteil durch seine Orientierung relativ zur Ebene des Zwischenteils stets in der richtigen Winkelstellung steht.As an alternative to defining the reference line through the intersection with the foot of the cutting part and the distance from the fulcrum, this can also be determined by the feature that the intermediate part runs in a plane and that the reference line is perpendicular to this plane. In this case, it is clearly defined how the intermediate part is aligned relative to the cutting part, which is particularly advantageous if there is a small space between the window pane and the frame of the motor vehicle through which the intermediate part must be led out, so that when the intermediate part runs in one plane, this plane can always be guided essentially parallel to a side edge of the window pane and the cutting part is always in the correct angular position due to its orientation relative to the plane of the intermediate part.
Besonders vorteilhaft ist es, wenn sowohl die Bedingungen für die Bezugsgerade hinsichtlich des Abstands von dem Drehpunkt als auch hinsichtlich des Verlaufs relativ zur Ebene des Zwischenteils erfüllt sind.It is particularly advantageous if both the conditions for the reference straight line with regard to the distance from the pivot point and with regard to the course relative to the plane of the intermediate part are met.
Ferner hat es sich aus Gründen der Schneideigenschaften eines derartigen Schneidmessers als zweckmäßig erwiesen, wenn eine Spitze des Schneidteils maximal bis ungefähr in Höhe der Aufnahme reicht, das heißt die Spitze nicht wesentlich über die Aufnahme hinausragt. Auch dann, wenn ein möglichst langes Schneidteil wünschenswert ist, liegt die Spitze vorzugsweise in Höhe der Aufnahme und das Schneidteil erstreckt sich dann bis zu seinem weiter weg von dem Drehpunkt angeordneten Fuß.Furthermore, for reasons of the cutting properties of such a cutting knife, it has proven to be expedient if a tip of the cutting part reaches a maximum of approximately the height of the receptacle, that is, the tip does not protrude significantly beyond the receptacle. Even if the longest possible cutting part is desirable, the tip is preferably at the level of the receptacle and the cutting part then extends to its base, which is further away from the fulcrum.
Um auch bei einem gerade gerichteten Schneidteil ein günstiges Einstechen desselben in den Klebewulst erreichen zu können, ist es zweckmäßig, wenn die Spitze geschärft ist.In order to be able to achieve a favorable insertion of the same into the adhesive bead even with a straight cutting part, it is expedient if the tip is sharpened.
Das Einstechen läßt sich aber auch noch dadurch erleichtern, daß sich das Schneidteil zur Spitze hin verjüngt.Grooving can also be facilitated by the cutting part tapering towards the tip.
Bei den bisher beschriebenen Ausführungsbeispielen wurde nicht näher darauf eingegangen, ob das Schneidteil einseitig oder beidseitig angeschliffen sein soll. Um eine möglichst große Flexibilität zu erreichen, hat es sich daher als vorteilhaft erwiesen, wenn das Schneidteil beidseitig mit gerade gerichteten Schneidkanten versehen ist.In the exemplary embodiments described so far, it has not been discussed in detail whether the cutting part should be ground on one or both sides. In order to achieve the greatest possible flexibility, it has therefore proven to be advantageous if the cutting part is provided on both sides with straight cutting edges.
Auch hinsichtlich des Schliffs des Schneidteils wurden keine näheren Ausführungen gemacht. So könnte es beispielsweise möglich sein, das Schneidteil lediglich einseitig konvex zu schleifen. Weit bessere Schneideigenschaften und eine insbesondere bessere Geradführung läßt sich jedoch dann erreichen, wenn das Schneidteil im Querschnitt ballig ausgebildet ist, d.h. beidseitig konvex geschliffen ist.No details were given regarding the grinding of the cutting part either. For example, it could be possible to grind the cutting part only convexly on one side. However, far better cutting properties and, in particular, better straight guidance can be achieved if the cutting part is spherical in cross section, i.e. is convex on both sides.
Besonders einfach herstellen läßt sich das erfindungsgemäße Schneidmesser, wenn das Befestigungsteil, das Zwischenteil und das Schneidteil aus gebogenem Flachmaterial hergestellt sind.The cutting knife according to the invention can be produced particularly easily if the fastening part, the intermediate part and the cutting part are made from bent flat material.
In diesem Fall läßt sich auch das Biegen am einfachsten dann durchführen, wenn Biegelinien zwischen dem Befestigungsteil und dem Zwischenteil sowie zwischen dem Zwischenteil und dem Schneidteil parallel zueinander verlaufen.In this case, the bending can also be carried out most simply when bending lines between the fastening part and the intermediate part and between the intermediate part and the cutting part run parallel to one another.
Hinsichtlich des Abstands der Bezugsgeraden vom Drehpunkt wurde bei den bislang beschriebenen Ausführungsbeispielen lediglich davon ausgegangen, daß dieser mindestens das 1,5-fache des Radius der Aufnahme betragen solle. Da der Abstand der Bezugsgeraden von dem Drehpunkt jedoch auch Auswirkungen auf die Bewegungen des Schneidteils bei festliegendem Schwenkwinkel des Oszillationsantriebs hat, ist es vorteilhafter, wenn der Abstand der Bezugsgeraden vom Drehpunkt mindestens dem zweifachen Radius der Aufnahme entspricht.With regard to the distance of the reference straight line from the fulcrum, it has only been assumed in the exemplary embodiments described so far that this should be at least 1.5 times the radius of the receptacle. However, since the distance of the reference straight line from the fulcrum also has an effect on the movements of the cutting part with a fixed pivot angle of the oscillation drive, it is advantageous if the distance of the reference straight line from the fulcrum corresponds to at least twice the radius of the receptacle.
Andererseits ist es auch nicht sinnvoll den Abstand der Bezugsgeraden vom Drehpunkt beliebig groß zu wählen. So kann im Maximalfall davon ausgegangen werden, daß vorteilhafterweise der Abstand der Bezugsgeraden vom Drehpunkt kleiner als der fünffache Radius der Aufnahme ist, vorzugsweise jedoch sogar kleiner als der vierfache Radius der Aufnahme. Besonders günstige Ergebnisse hinsichtlich der Schnittleistung der erfindungsgemäßen Schneidmesser wurden dann erzielt, wenn der Abstand der Bezugsgeraden vom Drehpunkt ungefähr dem dreifachen Radius der Aufnahme entspricht.On the other hand, it does not make sense to choose the distance of the reference line from the fulcrum as large as desired. In the maximum case, it can be assumed that the distance of the reference straight line from the fulcrum is advantageously less than five times the radius of the receptacle, but preferably even less than four times the radius of the receptacle. Particularly favorable results with regard to the cutting performance of the cutting knives according to the invention were achieved when the distance of the reference straight line from the fulcrum corresponds approximately to three times the radius of the receptacle.
Um auch bei dem erfindungsgemäßen Schneidmesser sicherzustellen, daß dieses keine Beschädigung des Rahmens des Kraftfahrzeugs beim Heraustrennen der Scheibe bewirkt, ist vorteilhafterweise vorgesehen, daß das Zwischenteil mit einer Kunststoffmasse überzogen ist, welche als Stütz- und Führungsanschlag dient und aufgrund ihrer geringeren Härte als der Rahmen des Kraftfahrzeugs Beschädigungen des Rahmens vermeidet.In order to ensure in the cutting knife according to the invention that this does not damage the frame of the motor vehicle when the pane is removed, it is advantageously provided that the intermediate part has a Plastic mass is coated, which serves as a support and guide stop and prevents damage to the frame due to its lower hardness than the frame of the motor vehicle.
Weitere Merkmale und Vorteile des erfindungsgemäßen Schneidmessers sind Gegenstand der nachfolgenden Beschreibung sowie der zeichnerischen Darstellung eines Ausführungsbeispiels. In der Zeichnung zeigen:
- Fig. 1 eine Frontansicht eines erfindungsgemäßen Schneidmessers;
- Fig. 2 eine Seitenansicht in Richtung des Pfeiles A;
- Fig. 3 eine geschnittene Darstellung des erfindungsgemäßen Schneidmessers im Einsatz mit einem Oszillationsantrieb und
- Fig. 4 einen Schnitt längs Linie 4-4 in Fig. 1.
- Figure 1 is a front view of a cutting knife according to the invention.
- Fig. 2 is a side view in the direction of arrow A;
- Fig. 3 is a sectional view of the cutting knife according to the invention in use with an oscillation drive and
- 4 shows a section along line 4-4 in FIG. 1.
Ein als Ganzes mit 10 bezeichnetes Ausführungsbeispiel eines erfindungsgemäßen Schneidmessers umfaßt, wie in Fig. 1 und 2 dargestellt, einen ersten als Befestigungsteil ausgebildeten U-Schenkel 12, welcher in einen Mittelschenkel des U übergeht, der als Zwischenteil 14 ausgebildet ist, an welchem ein als Schneidteil 16 ausgebildeter zweiter U-Schenkel gehalten ist. Das Befestigungsteil 12 und das Schneidteil 16 liegen dabei in zwei Ebenen 18 und 20, welche bis auf Abweichungen von wenigen Grad nahezu parallel zueinan der ausgerichtet sind. Bei dem in Fig. 2 dargestellten Ausführungsbeispiel sind die Ebenen in einem Winkel von ungefähr 3° gegeneinander geneigt.An embodiment designated as a whole by 10 of a cutting knife according to the invention comprises, as shown in FIGS. 1 and 2, a
Wie aus Fig. 1 zu ersehen ist, umfaßt das Befestigungsteil 12 eine Aufnahme 22 mit einer gezahnten Innenkontur 24, so daß das Befestigungsteil 12 mit der Aufnahme 22 formschlüssig - wie in Fig. 3 gezeigt - auf einer Antriebswelle 25 eines als Ganzes mit 26 bezeichneten Oszialltionsantriebs montierbar ist. Der Oszillationsantrieb 26 verschwenkt dabei die Antriebswelle 25 mit hoher Frequenz im Bereich von 10 000 bis 20 000 Schwingungen pro Minute und kleinem Verschwenkwinkel, vorzugsweise zwischen 1° und 5°. Eine Drehachse 28 liegt dabei konzentrisch zu einem Mittelpunkt der Aufnahme 22, welcher gleichzeitig ein Drehpunkt 30 des Schneidmessers 10 ist.As can be seen from Fig. 1, the
Das Befestigungsteil 12 ist seinerseits aus Flachmaterial ausgebildet und längs einer Biegelinie 32 zu dem ebenfalls aus Flachmaterial hergestellten Zwischenteil 14 umgebogen. Das Zwischenteil 14 liegt dabei in einer Ebene 34, welche einen rechten Winkel mit der Ebene 20 einschließt, in welcher das Schneidteil 16 liegt und nahezu einen rechten Winkel mit der Ebene 18, in welcher das Befestigungsteil 12 liegt.The fastening
Das aus Flachmaterial bestehende Zwischenteil 14 ist längs einer Biegelinie 36 zum Schneidteil 16 umgebogen, welches sich von einem bei der Biegelinie 36 liegenden Fuß 38 bis zu einer Spitze 40 erstreckt.The
Wie insbesondere aus Fig. 1 ersichtlich, ist das Schneidteil 16 gegenüber dem Drehpunkt 30 versetzt, und zwar so, daß eine den Fuß 38 mittig schneidende Bezugsgerade 42, welche vorzugsweise senkrecht auf der Ebene 34 steht, in welcher das Zwischenteil 14 liegt, in einem Abstand a von dem Drehpunkt 30 angeordnet ist. Bei dem in Fig. 1 dargestellten Ausführungsbeispiel beträgt der Abstand a ungefähr das 3-fache des Radius r der Aufnahme 22, er kann jedoch auch im Bereich des 1,5- bis 5-fachen liegen.As can be seen in particular from FIG. 1, the
Bezogen auf diese Bezugsgerade 42 kann das Schneidteil 16 mit seiner in der Ebene 20 liegenden Mittellinie 44 noch bis zu einem Winkel α geneigt sein und hat bei dem in Fig. 1 gezeigten Ausführungsbeispiel einen Neigungswinkel α von ungefähr -8°.In relation to this reference
Das Schneidteil ist vorzugsweise beidseitig angeschliffen und trägt somit beidseitig Schneidkanten 46 und 48, welche symmetrisch zu der Mittellinie 44 angeordnet und selbst längs ihres Verlaufs vom Fuß 38 bis zur Spitze 40 gerade gerichtet sind. Vorzugsweise verjüngt sich das Schneidteil 16 zur Spitze 40 hin, so daß die beiden Schneidkanten 46 und 48 nicht parallel zueinander verlaufen, sondern einen spitzen Winkel miteinander einschließen.The cutting part is preferably ground on both sides and thus carries
Der Schliff des Schneidteils 16 ist bevorzugterweise so ausgeführt, daß dieses - wie in Fig. 4 dargestellt - eine im Querschnitt ballige Form aufweist.The grinding of the
Zum Durchtrennen eines Klebewulstes 50, mit welchem eine Fensterscheibe 52 eines Kraftfahrzeugs an einem Rahmen 54 desselben gehalten ist, wird das erfindungsgemäße Schneidmesser 10 in den Klebewulst 50 so eingeführt, daß dessen Schneidteil 16 in diesem verläuft und sich das Zwischenteil 14 in einem Zwischenraum 56 zwischen einer Seitenkante 58 der Fensterscheibe 52 und dem Rahmen 54 nach aussen erstreckt. Der das Messer mit dem Befestigungsteil 12 haltende Oszillationsantrieb 26 wird nun so längs der Seitenkante 58 der Fensterscheibe 52 geführt, daß das Schneidteil 16 stets im Klebewulst 50 verläuft und durch die schwenkoszillierende Bewegung des Schneidmessers 10 diesen durchtrennt.To cut through an
Zum Schutz des Rahmens 54 ist das Zwischenteil 14 vorzugsweise mit einer Umhüllung 60 aus Kunststoff versehen, welche gleichzeitig als Stützanschlag für das Zwischenteil 14 dienen kann. Die Umhüllung 60 kann beispielsweise im Rahmen eines Wirbelsinterverfahrens aufgetragen werden.To protect the
Claims (15)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3839029 | 1988-11-18 | ||
DE3839029A DE3839029A1 (en) | 1988-11-18 | 1988-11-18 | CUTTING KNIFE WITH STRAIGHT CUTTING PART |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0369390A2 true EP0369390A2 (en) | 1990-05-23 |
EP0369390A3 EP0369390A3 (en) | 1991-03-20 |
EP0369390B1 EP0369390B1 (en) | 1994-05-18 |
Family
ID=6367427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89121045A Expired - Lifetime EP0369390B1 (en) | 1988-11-18 | 1989-11-14 | Knife with a straight cutting portion |
Country Status (4)
Country | Link |
---|---|
US (1) | US4980976A (en) |
EP (1) | EP0369390B1 (en) |
JP (2) | JPH02185393A (en) |
DE (2) | DE3839029A1 (en) |
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EP1002628A1 (en) | 1998-11-17 | 2000-05-24 | C. & E. FEIN GmbH & Co. | Cutter blade for severing adhesive beads on window panes of motor vehicles |
EP1002629A1 (en) | 1998-11-17 | 2000-05-24 | C. & E. FEIN GmbH & Co. | Cutter blade for severing adhesive beads on window panes of motor vehicles |
EP1068937A1 (en) * | 1999-07-10 | 2001-01-17 | C. & E. Fein Gmbh & Co. KG | Cutter blade for severing adhesive beads on window panes |
WO2001014109A2 (en) * | 1999-08-02 | 2001-03-01 | Boris Zelmanovich Boguslavsky | Cutting tool for separating an elastic connection of a sheet of glass from a car body |
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EP1302286A1 (en) | 2001-10-16 | 2003-04-16 | C. & E. FEIN GmbH & Co. | Machine tool with securing flange |
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US5826342A (en) * | 1996-08-05 | 1998-10-27 | Equalizer Industries, Inc. | Vehicle windshield removing tool |
DE19736933C1 (en) * | 1997-08-25 | 1998-10-29 | Fein C & E | Adaptor for securing accessory tool to oscillatory drive mechanism e.g. for automobile window glass adhesive cutters, saw-blades etc |
DE19938115A1 (en) * | 1999-08-12 | 2001-02-22 | Fein C & E | Cutting knife |
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AUPQ925300A0 (en) * | 2000-08-08 | 2000-08-31 | Lock, Trevor Stanley | Improved glass removing tool |
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US20060042099A1 (en) * | 2004-08-30 | 2006-03-02 | Diemert Eric D | " Kwik kut ", high performance " blade " |
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US9149923B2 (en) | 2010-11-09 | 2015-10-06 | Black & Decker Inc. | Oscillating tools and accessories |
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DE102012103811A1 (en) | 2012-05-02 | 2013-11-07 | C. & E. Fein Gmbh | Apparatus and method for monitoring cutting operations when cutting adhesive beads on vehicle windows |
USD694596S1 (en) | 2012-06-25 | 2013-12-03 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD694076S1 (en) | 2012-06-25 | 2013-11-26 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
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USD694597S1 (en) | 2012-06-25 | 2013-12-03 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD832666S1 (en) | 2012-07-16 | 2018-11-06 | Black & Decker Inc. | Oscillating saw blade |
USD814900S1 (en) | 2017-01-16 | 2018-04-10 | Black & Decker Inc. | Blade for oscillating power tools |
US10265778B2 (en) | 2017-01-16 | 2019-04-23 | Black & Decker Inc. | Accessories for oscillating power tools |
USD931069S1 (en) | 2019-05-03 | 2021-09-21 | Tti (Macao Commercial Offshore) Limited | Blade |
WO2022108785A1 (en) | 2020-11-18 | 2022-05-27 | Milwaukee Electric Tool Corporation | Accessory for an oscillating power tool |
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EP0174427B1 (en) * | 1984-08-02 | 1988-02-17 | C. & E. FEIN GmbH & Co. | Knife for severing the adhesive layer of a bonded pane |
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-
1988
- 1988-11-18 DE DE3839029A patent/DE3839029A1/en active Granted
-
1989
- 1989-11-14 EP EP89121045A patent/EP0369390B1/en not_active Expired - Lifetime
- 1989-11-14 DE DE58907687T patent/DE58907687D1/en not_active Expired - Fee Related
- 1989-11-16 US US07/438,522 patent/US4980976A/en not_active Expired - Fee Related
- 1989-11-17 JP JP1297752A patent/JPH02185393A/en active Pending
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1995
- 1995-02-17 JP JP1995000760U patent/JP2523105Y2/en not_active Expired - Lifetime
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EP0141035B1 (en) * | 1983-08-31 | 1987-03-11 | C. & E. FEIN GmbH & Co. | Cutting tool |
EP0174427B1 (en) * | 1984-08-02 | 1988-02-17 | C. & E. FEIN GmbH & Co. | Knife for severing the adhesive layer of a bonded pane |
DE8617670U1 (en) * | 1986-07-02 | 1986-12-18 | Wilhelm Mütter Werkzeugfabrik u. Gesenkschmiede, 5650 Solingen | Oscillating cutting blade with teeth |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6434835B1 (en) | 1998-11-17 | 2002-08-20 | C. & E. Fein Gmbh & Co. | Cutting knife for cutting through adhesive beads on glass panes of vehicles |
EP1002629A1 (en) | 1998-11-17 | 2000-05-24 | C. & E. FEIN GmbH & Co. | Cutter blade for severing adhesive beads on window panes of motor vehicles |
US6442844B1 (en) | 1998-11-17 | 2002-09-03 | C. & E. Fein Gmbh & Co. | Cutting knife for cutting through adhesive beads on glass panes of vehicles |
EP1002628A1 (en) | 1998-11-17 | 2000-05-24 | C. & E. FEIN GmbH & Co. | Cutter blade for severing adhesive beads on window panes of motor vehicles |
EP1068937A1 (en) * | 1999-07-10 | 2001-01-17 | C. & E. Fein Gmbh & Co. KG | Cutter blade for severing adhesive beads on window panes |
US6401342B1 (en) | 1999-07-10 | 2002-06-11 | C. & E. Fein Gmbh & Co. | Cutting knife for cutting cement beads of window panes |
WO2001014109A3 (en) * | 1999-08-02 | 2001-06-21 | Boris Zelmanovich Boguslavsky | Cutting tool for separating an elastic connection of a sheet of glass from a car body |
WO2001014109A2 (en) * | 1999-08-02 | 2001-03-01 | Boris Zelmanovich Boguslavsky | Cutting tool for separating an elastic connection of a sheet of glass from a car body |
EP1213107A1 (en) | 2000-12-07 | 2002-06-12 | C. & E. Fein Gmbh & Co. KG | Mounting for fixing a tool to a drive shaft and adaptor therefor |
US6796888B2 (en) | 2000-12-07 | 2004-09-28 | C. & E. Fein Gmbh & Co. Kg | Power tool having a receptacle for securing a tool |
US6945862B2 (en) | 2000-12-07 | 2005-09-20 | C. & E. Fein Gmbh | Power tool having a receptacle for securing a tool |
EP1302286A1 (en) | 2001-10-16 | 2003-04-16 | C. & E. FEIN GmbH & Co. | Machine tool with securing flange |
US6802764B2 (en) | 2001-10-16 | 2004-10-12 | C & E. Fein Gmbh & Co. Kg | Power tool comprising a securement flange |
CN102814791A (en) * | 2011-06-09 | 2012-12-12 | 苏州宝时得电动工具有限公司 | Working head |
CN102814791B (en) * | 2011-06-09 | 2016-02-17 | 苏州宝时得电动工具有限公司 | Working head |
US10137592B2 (en) | 2013-05-06 | 2018-11-27 | Milwaukee Electric Tool Corporation | Oscillating multi-tool system |
US10940605B2 (en) | 2013-05-06 | 2021-03-09 | Milwaukee Electric Tool Corporation | Oscillating multi-tool system |
US11724413B2 (en) | 2013-05-06 | 2023-08-15 | Milwaukee Electric Tool Corporation | Oscillating multi-tool system |
Also Published As
Publication number | Publication date |
---|---|
DE58907687D1 (en) | 1994-06-23 |
JP2523105Y2 (en) | 1997-01-22 |
DE3839029C2 (en) | 1992-12-10 |
EP0369390A3 (en) | 1991-03-20 |
US4980976A (en) | 1991-01-01 |
JPH0744444U (en) | 1995-11-21 |
DE3839029A1 (en) | 1990-05-23 |
JPH02185393A (en) | 1990-07-19 |
EP0369390B1 (en) | 1994-05-18 |
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