EP1661674B1 - cutting tool - Google Patents

cutting tool Download PDF

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Publication number
EP1661674B1
EP1661674B1 EP05025874A EP05025874A EP1661674B1 EP 1661674 B1 EP1661674 B1 EP 1661674B1 EP 05025874 A EP05025874 A EP 05025874A EP 05025874 A EP05025874 A EP 05025874A EP 1661674 B1 EP1661674 B1 EP 1661674B1
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EP
European Patent Office
Prior art keywords
row
cutters
cutting tool
cutting
tool according
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EP05025874A
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German (de)
French (fr)
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EP1661674A1 (en
Inventor
Martin Kenntner
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Leitz GmbH and Co KG
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Leitz GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/20—Edge trimming saw blades or tools combined with means to disintegrate waste

Definitions

  • the invention relates to a cutting tool having a base body and a plurality distributed over the circumference in at least a first and a second axially spaced apart rows arranged cutting blade, wherein the cutting blades of the second compared to the first row in the profile cross section are formed differently, the cutting blades of the at least second Series in the profile cross-section have a tooth head narrower compared to the tooth root and the applied on both sides of the tooth flanks straight lines that extend through the smallest and largest tooth width defining points, an acute angle ⁇ include.
  • Such a cutting tool is for example from the US-A-2,818,094 known. This tool is used to simultaneously cut out a plurality of quarter-round strips from a single board with a profiled wood machine.
  • Cutting tools are generally used for processing wood, wood materials, composites or the like and are used in particular for separating and trimming workpieces from such materials. This will be waste pieces machined and shredded so that they can be sucked as waste chips through a suction system.
  • a cutting tool is for example in the DE 198 32 499 C2 described.
  • This tool comprises a circular saw blade mounted on a bush at the front for cutting a workpiece. At this circular saw blade close at least two coaxially arranged on the bushing Zerspanerlismn, each consisting of a support body and a plurality of distributed over the cutting edge arranged cutting elements, the cutting exist.
  • the first Zerspanerfusion following on the circular saw blade has a smaller circle diameter than the circular saw blade.
  • This first shredding disc have a positive corner angle as measured parallel to the axis of rotation of the line, whereas the second and optionally subsequent cutting discs have negative corner angles between their cutting edges and a parallel axis of rotation.
  • the Zerspanerlismn have the purpose to chop the separated by the circular saw blade pieces of waste so that they can be removed through the suction.
  • a generic cutting tool is characterized in that the cutting blades of the at least second row have a larger circle diameter than the cutting blade of the first row.
  • the acute-angled configuration of the profiles of the cutting blades ensures that these cutting blades penetrate better into the flexible film-like surfaces without the surfaces avoiding the cutting edges.
  • these over the edge of the plate-shaped components protruding surfaces are crushed and not separated in continuous strips.
  • the chips so shredded can be removed from the extraction system and removed from the working space of the machine. In this way, the usability of the machine is guaranteed and the risk of ignition of the separated coating material by friction on the rotating tool avoided.
  • the cutting tool can be adapted to the width of the supernatants to be machined.
  • the cutting blades of the first row are formed integrally with the main body.
  • At least a portion of the cutting blades may be detachably formed connectable to the base body. This facilitates the replacement of defective cutting blades and the adaptation to specific machining workpieces.
  • the cutting blades of the second and optionally further series are detachably formed connectable to the base body.
  • the cutting blades are for this purpose fastened in over the circumference of the body distributed recesses arranged.
  • One embodiment of the cutting tool is characterized in that the cutting blades of the second row extend in the radial direction at least 3 mm, in a further embodiment at least 5 mm beyond the circle of the first row.
  • the angle ( ⁇ ) is expediently less than 70 °. Preferably, it is between 5 ° and 15 °.
  • the tooth heads of the second and optionally further series have in one embodiment of the invention a maximum extension of 3 mm in the profile cross-section.
  • the cutting tool according to the invention can also be characterized by positive rake angles of the cutting blades of the second row.
  • FIG. 1 is an axial partial top view represented by a cutting tool, with only one up to the axis of rotation A reaching half is shown.
  • the cutting tool has a main body 1 and a plurality of circumferentially arranged in a first row 2 cutting blade 3.
  • the cutting blades 3 are evenly distributed over the circumference of the first row 2.
  • Four further rows 4, 5, 6, 7 follow the first row 2 axially spaced apart.
  • a plurality of cutting knives 8 arranged over the circumference of the main body 1 are arranged.
  • the cutting blades 8 of the second row 4 are fastened by screws 9 to the base body 1.
  • the cutting blades 8 of the second row 4 extend in the radial direction farther from the axis A than the cutting blades 3 of the first row 2 and thereby occupy a larger circle diameter F 1 than the cutting blades 3 of the first row 2.
  • the radial extent of the cutting blades the first and second row takes place abruptly.
  • the cutting blades 8 of the second row 4 have a clearly recognizable narrower and more pointed profile cross-section than the cutting blade 3 of the first row 2.
  • the number of cutting blades 8 of the second row 4 is less than the number of cutting blades 3 of the first row 2 and evenly distributed over the circumference of the base body 1. For the cutting blades 10, 11 and 12 of the third, fourth and fifth rows 5, 6 and 7, the statements made regarding the second row 4 apply accordingly.
  • the number of cutting blades 10, 11 and 12 may be different from each other and in relation to the first row 2. It is also possible that they are arranged offset from one another on the circumference of the main body 1. Furthermore, the axial distances between the rows can be variable.
  • the main body 1 is stretched on a clamping bush.
  • the clamping bush 13 has a bore 14 for a clamping screw, by means of which the cutting tool is attached to the spindle of a processing machine.
  • FIG. 2 shows the sketch of a further embodiment of the invention.
  • 32 cutting blades 33 are distributed over the circumference in a first row.
  • the circle diameter F 1 of the second to fourth row 34, 35, 36 are larger in this embodiment than that of the first row 32.
  • the cutting blades 37, 38, 39 of the second to fourth row 34, 35 36 each have sharp cutting blade profiles.
  • the workpiece 40 consists of a plate-shaped component 41, which is coated on both sides with a veneer 42.
  • the veneer 42 protrudes beyond the edge 43 of the component 41.
  • a workpiece 44 shown during machining with the cutting tool is also shown during machining with the cutting tool.
  • FIG. 3 illustrated embodiment of the invention differs from that in FIG. 1 illustrated embodiment essentially in that the first row 51 consists of a circular saw blade with saw teeth 52 as a cutting blade and the other rows consists of a profile cutter with detachable or connected cutting.
  • FIG. 4 shows the cutting tool FIG. 3 in a simplified representation together with a workpiece 61 before machining and a workpiece 62 during machining.
  • FIG. 5 shows the profile cross-section of a cutting blade 71 with flat edges 72.
  • the angle ⁇ is through the applied to the tooth flanks 72 straight lines 73, 74 which extend through the narrowest 75 and largest 76 tooth width defining points 77, 78 and 79, 80. It can be clearly seen that the angle ⁇ is acute.
  • the cutting knife 91 in FIG. 6 has concave flanks 92.
  • the cutting knife 95 in FIG. 7 has convex flanks 96.
  • FIG. 8 a cutting blade 97 of a second row 98 is shown, in which the chip plane 99 has a positive rake angle ⁇ .

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Milling Processes (AREA)
  • Drilling Tools (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The chipping tool has a base body (1) and first and second rows (2, 4) of axially spaced cutters (3, 8). The cutters of the second row are offered different profile cross section from those of the first row. They have a narrower tooth head, and the straight lines from the flanks through the smallest and largest tooth widths form an acute angle.

Description

Die Erfindung betrifft ein Zerspanwerkzeug mit einem Grundkörper und einer Mehrzahl über den Umfang verteilt in mindestens einer ersten und einer zweiten zueinander axial beabstandeten Reihen angeordneter Schneidmesser, bei dem die Schneidmesser der zweiten gegenüber der ersten Reihe im Profilquerschnitt unterschiedlich ausgebildet sind, die Schneidmesser der mindestens zweiten Reihe im Profilquerschnitt einen gegenüber dem Zahnfuß schmaleren Zahnkopf aufweisen und die beidseitig an die Zahnflanken angelegten Geraden, die durch die die kleinste und größte Zahnbreite definierende Punkte verlaufen, einen spitzen Winkel α einschließen.The invention relates to a cutting tool having a base body and a plurality distributed over the circumference in at least a first and a second axially spaced apart rows arranged cutting blade, wherein the cutting blades of the second compared to the first row in the profile cross section are formed differently, the cutting blades of the at least second Series in the profile cross-section have a tooth head narrower compared to the tooth root and the applied on both sides of the tooth flanks straight lines that extend through the smallest and largest tooth width defining points, an acute angle α include.

Ein solches Zerspanwerkzeug ist beispielsweise aus der US-A-2,818,094 bekannt. Dieses Werkzeug wird dazu verwendet, um mit einer Profilholzmaschine gleichzeitig eine Mehrzahl viertelrunder Streifen aus einem einzigen Brett herauszuschneiden.Such a cutting tool is for example from the US-A-2,818,094 known. This tool is used to simultaneously cut out a plurality of quarter-round strips from a single board with a profiled wood machine.

Zerspanwerkzeuge werden generell zum Bearbeiten von Holz, Holzwerkstoffen, Verbundwerkstoffen oder dergleichen eingesetzt und dienen insbesondere zum Trennen und Besäumen von Werkstücken aus derartigen Werkstoffen. Dabei werden Abfallstücke zerspant und derart zerkleinert, dass sie als Abfallspäne durch eine Absauganlage abgesaugt werden können. Ein solches Zerspanwerkzeug ist beispielsweise in der DE 198 32 499 C2 beschrieben. Dieses Werkzeug umfasst ein auf einer Buchse stirnseitig angebrachtes Kreissägeblatt zum Zertrennen eines Werkstücks. An dieses Kreissägeblatt schließen sich wenigstens zwei koaxial auf der Buchse angeordnete Zerspanerscheiben, die jeweils aus einem Tragkörper und mehreren, über den Schneidenumfang verteilt angeordneten Schneidelementen, die Schneiden aufweisen, bestehen. Die erste auf das Kreissägeblatt folgende Zerspanerscheibe weist dabei einen kleineren Flugkreisdurchmesser als das Kreissägeblatt auf. Die Schneiden dieser ersten Zerspanerscheibe haben einen, gemessen zu einer Parallelen der Rotationsachse Linie, positiven Eckwinkel, wohingegen die zweite und gegebenenfalls folgenden Zerspanerscheiben negative Eckwinkel zwischen ihren Schneiden und einer Parallelen der Rotationsachse aufweisen. Die Zerspanerscheiben haben den Zweck, die durch das Kreissägeblatt abgetrennten Abfallstücke zu zerspanen, damit sie durch die Absauganlage abgeführt werden können.Cutting tools are generally used for processing wood, wood materials, composites or the like and are used in particular for separating and trimming workpieces from such materials. This will be waste pieces machined and shredded so that they can be sucked as waste chips through a suction system. Such a cutting tool is for example in the DE 198 32 499 C2 described. This tool comprises a circular saw blade mounted on a bush at the front for cutting a workpiece. At this circular saw blade close at least two coaxially arranged on the bushing Zerspanerscheiben, each consisting of a support body and a plurality of distributed over the cutting edge arranged cutting elements, the cutting exist. The first Zerspanerscheibe following on the circular saw blade has a smaller circle diameter than the circular saw blade. The cutting edges of this first shredding disc have a positive corner angle as measured parallel to the axis of rotation of the line, whereas the second and optionally subsequent cutting discs have negative corner angles between their cutting edges and a parallel axis of rotation. The Zerspanerscheiben have the purpose to chop the separated by the circular saw blade pieces of waste so that they can be removed through the suction.

Probleme treten mit einem solchen Zerspanwerkzeug insbesondere dann auf, wenn plattenförmige Bauteile an ihrer Schmalseite bearbeitet werden sollen und diese plattenförmigen Bauteile vor der Bearbeitung mit folienartigen Oberflächen, wie z. B. Furnieren, Papier oder Kunststoff beschichtet worden sind. Teilweise werden diese folienartigen Oberflächen mit einem Übermaß gegenüber der Trägerplatte aufgebracht, so dass die Beschichtung an den Kanten der Trägerplatte bis zu einigen Zentimetern übersteht. Diese so vorgefertigten Platten können anschließend mit einem Zerspanwerkzeug der eingangs genannten Art auf Fertigmaß bearbeitet werden. Bei dünnen, nachgiebigen Beschichtungswerkstoffen kommt es vor, dass diese im Bereich ihres freien Überstandes von den Schneiden des Zerspanwerkzeugs nicht richtig erfasst werden und den Schneiden teilweise ausweichen. Hierdurch kommt es nicht zu einer sauberen Zerspanung der Überstände, diese werden vielmehr als zusammenhängende Streifen abgetrennt. Besonders ausgeprägt tritt dies bei der Bearbeitung von Furnierüberständen auf, wenn die Bearbeitung der Bauteile in Längsrichtung der Fasern des Furniers erfolgt. Der Zusammenhalt in Faserrichtung ist bei diesen Oberflächen deutlich höher als quer zu den Fasern. Hierdurch kommt es im Bereich des freien Überstandes nicht zu einer sauberen Zerspanung, vielmehr reißen die Werkzeugschneiden die Furnierüberstände entlang ihrer Fasern ab, so dass lange Furnierstreifen als Abfallprodukt entstehen. Diese Furnierstreifen können nicht durch die Absaughauben erfasst und über die Absauganlage abgeführt werden, sondern verbleiben im Arbeitsraum der Maschine. Dies führt zur Beeinträchtigung des gesamten Bearbeitungsprozesses, was insbesondere bei einer automatisierten Bearbeitung auf Durchlaufmaschinen zu erheblichen Störungen des Bearbeitungsprozesses führt. Darüber hinaus verstopfen die abgetrennten Furnierstreifen die Absauganlagen und können durch Reibung an den weiterrotierenden Werkzeugen sogar entzündet werden.Problems occur with such a cutting tool in particular when plate-shaped components are to be processed on its narrow side and these plate-shaped components before processing with film-like surfaces such. As veneers, paper or plastic have been coated. Some of these film-like surfaces are applied with an excess of the support plate, so that the coating on the edges of the support plate protrudes up to a few centimeters. These prefabricated panels can then be machined to finished size with a cutting tool of the type mentioned. In the case of thin, flexible coating materials, it can happen that they are not properly grasped by the cutting edges of the cutting tool in the area of their free protrusion and that they partly dodge the cutting edges. This does not result in a clean cutting of the supernatants, these are rather separated as a continuous strip. This is particularly pronounced in the processing of veneer supernatants, when the machining of the components takes place in the longitudinal direction of the fibers of the veneer. The cohesion in the fiber direction is significantly higher in these surfaces than across the fibers. As a result, clean cutting does not occur in the region of the free supernatant, but rather rupture the tools cut off the veneer projections along their fibers, resulting in long veneer strips as a waste product. These veneer strips can not be captured by the suction hoods and removed via the extraction system, but remain in the working area of the machine. This leads to impairment of the entire machining process, which leads to significant disruption of the machining process, especially in an automated processing on continuous machines. In addition, the separated veneer strips clog the suction and can even be ignited by friction on the rotating tools.

Von dieser Problemstellung ausgehend soll das eingangs beschriebene Zerspanwerkzeug verbessert werden.Starting from this problem, the machining tool described above is to be improved.

Zur Problemlösung zeichnet sich ein gattungsgemäßes Zerspanwerkzeug dadurch aus, dass die Schneidmesser der mindestens zweiten Reihe einen größeren Flugkreisdurchmesser aufweisen als die Schneidmesser der ersten Reihe.To solve the problem, a generic cutting tool is characterized in that the cutting blades of the at least second row have a larger circle diameter than the cutting blade of the first row.

Durch die spitzwinklige Ausgestaltung der Profile der Schneidmesser wird erreicht, dass diese Schneidmesser besser in die nachgiebigen folienartigen Oberflächen eindringen, ohne dass die Oberflächen den Schneiden ausweichen. Damit werden diese über dem Rand der plattenförmigen Bauteile überstehenden Oberflächen zerkleinert und nicht in zusammenhängenden Streifen abgetrennt. Die so zerkleinerten Späne können von der Absauganlage abgeführt und aus dem Arbeitsraum der Maschine entfernt werden. Auf diese Weise wird die Einsatzfähigkeit der Bearbeitungsmaschine gewährleistet und die Gefahr einer Entzündung des abgetrennten Beschichtungsstoffes durch Reibung an dem rotierenden Werkzeug vermieden.The acute-angled configuration of the profiles of the cutting blades ensures that these cutting blades penetrate better into the flexible film-like surfaces without the surfaces avoiding the cutting edges. Thus, these over the edge of the plate-shaped components protruding surfaces are crushed and not separated in continuous strips. The chips so shredded can be removed from the extraction system and removed from the working space of the machine. In this way, the usability of the machine is guaranteed and the risk of ignition of the separated coating material by friction on the rotating tool avoided.

Durch mehrere axial beabstandete Reihen lässt sich das Zerspanwerkzeug an die Breite der zu zerspanenden Überstände anpassen.By several axially spaced rows, the cutting tool can be adapted to the width of the supernatants to be machined.

In einer Ausführungsform sind die Schneidmesser der ersten Reihe einstückig mit dem Grundkörper ausgebildet.In one embodiment, the cutting blades of the first row are formed integrally with the main body.

Wenigstens ein Teil der Schneidmesser können lösbar mit dem Grundkörper verbindbar ausgebildet sein. Dadurch wird ein Austausch defekter Schneidmesser und die Anpassung an bestimmte Bearbeitungswerkstücke erleichtert. Zweckmäßig werden die Schneidmesser der zweiten und gegebenenfalls weiteren Reihe lösbar mit dem Grundkörper verbindbar ausgebildet. Zweckmäßig sind die Schneidmesser hierzu in über den Umfang des Grundkörpers verteilt angeordneter Ausnehmungen befestigbar.At least a portion of the cutting blades may be detachably formed connectable to the base body. This facilitates the replacement of defective cutting blades and the adaptation to specific machining workpieces. Suitably, the cutting blades of the second and optionally further series are detachably formed connectable to the base body. Suitably, the cutting blades are for this purpose fastened in over the circumference of the body distributed recesses arranged.

Eine Ausführungsform des Zerspanwerkzeugs ist dadurch gekennzeichnet, dass sich die Schneidmesser der zweiten Reihe in radialer Richtung mindestens 3 mm, in einer weiteren Ausführungsform mindestens 5 mm über den Flugkreis der ersten Reihe hinaus erstrecken.One embodiment of the cutting tool is characterized in that the cutting blades of the second row extend in the radial direction at least 3 mm, in a further embodiment at least 5 mm beyond the circle of the first row.

Der Winkel (α) beträgt zweckmäßiger Weise weniger als 70°. Vorzugsweise liegt er zwischen 5° und 15°.The angle (α) is expediently less than 70 °. Preferably, it is between 5 ° and 15 °.

Die Zahnköpfe der zweiten und gegebenenfalls weiteren Reihe haben in einer Ausführungsform der Erfindung eine maximale Ausdehnung von 3 mm im Profilquerschnitt.The tooth heads of the second and optionally further series have in one embodiment of the invention a maximum extension of 3 mm in the profile cross-section.

Das erfindungsgemäße Zerspanwerkzeug kann auch durch positive Spanwinkel der Schneidmesser der zweiten Reihe gekennzeichnet sein.The cutting tool according to the invention can also be characterized by positive rake angles of the cutting blades of the second row.

Mit Hilfe der folgenden Zeichnungen sollen einige Ausführungsbeispiele der Erfindung näher beschrieben werden.With the help of the following drawings, some embodiments of the invention will be described in more detail.

Es zeigen:

Figur 1 -
eine radiale Teildraufsicht auf ein erstes Zerspanwerkzeug;
Figur 2 -
eine radiale Teildraufsicht auf ein weiteres Zerspanwerkzeug, zusammen mit einem zu bearbeitenden Werkstück;
Figur 3 -
einen axialen Teilquerschnitt eines weiteren Zerspanwerkzeugs;
Figur 4 -
eine radiale Draufsicht des Zerspanwerkzeugs aus Figur 3, zusammen mit einem zu bearbeitenden Werkstück;
Figuren 5, 6, 7 -
Schneidmesser mit unterschiedlich ausgestalteten Profilflanken;
Figur 8 -
eine axiale Ansicht einer Schneide der zweiten Zahnreihe mit positivem Spanwinkel.
Show it:
FIG. 1 -
a radial partial top view of a first cutting tool;
FIG. 2 -
a radial partial top view of another cutting tool, together with a workpiece to be machined;
FIG. 3 -
an axial partial cross-section of another cutting tool;
FIG. 4 -
a radial top view of the cutting tool FIG. 3 , together with a workpiece to be machined;
FIGS. 5, 6, 7 -
Cutting knife with differently shaped profile edges;
FIG. 8 -
an axial view of a cutting edge of the second row of teeth with a positive rake angle.

In Figur 1 ist eine axiale Teildraufsicht durch ein Zerspanwerkzeug dargestellt, wobei lediglich eine bis zur Rotationsachse A reichende Hälfte gezeigt ist. Das Zerspanwerkzeug weist einen Grundkörper 1 und eine Mehrzahl über den Umfang in einer ersten Reihe 2 angeordneter Schneidmesser 3 auf. Die Schneidmesser 3 sind gleichmäßig über dem Umfang der ersten Reihe 2 verteilt. Auf die erste Reihe 2 folgen axial beabstandet vier weitere Reihen 4, 5, 6, 7. In der zweiten Reihe 4 sind eine Mehrzahl über dem Umfang des Grundkörpers 1 angeordneter Schneidmesser 8 angeordnet. Die Schneidmesser 8 der zweiten Reihe 4 sind mittels Schrauben 9 an dem Grundkörper 1 befestigt. Die Schneidmesser 8 der zweiten Reihe 4 erstrecken sich in radialer Richtung weiter von der Achse A als die Schneidmesser 3 der ersten Reihe 2 und nehmen dadurch einen größeren Flugkreisdurchmesser F1 ein als die Schneidmesser 3 der ersten Reihe 2. Die radiale Erstreckung der Schneidmesser der ersten und zweiten Reihe erfolgt hierbei sprungartig. Die Schneidmesser 8 der zweiten Reihe 4 weisen einen deutlich erkennbar schmaleren und spitzeren Profilquerschnitt als die Schneidmesser 3 der ersten Reihe 2 auf. Die Anzahl der Schneidmesser 8 der zweiten Reihe 4 ist geringer als die Anzahl der Schneidmesser 3 der ersten Reihe 2 und gleichmäßig über den Umfang des Grundkörpers 1 verteilt. Für die Schneidmesser 10, 11 bzw. 12 der dritten, vierten bzw. fünften Reihe 5, 6 bzw. 7 gilt das zu der zweiten Reihe 4 Gesagte entsprechend. Jedoch können die Anzahl der Schneidmesser 10, 11 bzw. 12 untereinander und im Verhältnis zur ersten Reihe 2 unterschiedlich sein. Auch ist es möglich, dass sie auf dem Umfang des Grundkörpers 1 zueinander versetzt angeordnet sind. Des weiteren können die axialen Abstände zwischen den Reihen variierbar sein. Der Grundkörper 1 ist auf eine Spannbüchse gespannt. Die Spannbüchse 13 weist eine Bohrung 14 für eine Spannschraube auf, mittels derer das Zerspanwerkzeug an der Spindel einer Bearbeitungsmaschine befestigt wird.In FIG. 1 is an axial partial top view represented by a cutting tool, with only one up to the axis of rotation A reaching half is shown. The cutting tool has a main body 1 and a plurality of circumferentially arranged in a first row 2 cutting blade 3. The cutting blades 3 are evenly distributed over the circumference of the first row 2. Four further rows 4, 5, 6, 7 follow the first row 2 axially spaced apart. In the second row 4, a plurality of cutting knives 8 arranged over the circumference of the main body 1 are arranged. The cutting blades 8 of the second row 4 are fastened by screws 9 to the base body 1. The cutting blades 8 of the second row 4 extend in the radial direction farther from the axis A than the cutting blades 3 of the first row 2 and thereby occupy a larger circle diameter F 1 than the cutting blades 3 of the first row 2. The radial extent of the cutting blades the first and second row takes place abruptly. The cutting blades 8 of the second row 4 have a clearly recognizable narrower and more pointed profile cross-section than the cutting blade 3 of the first row 2. The number of cutting blades 8 of the second row 4 is less than the number of cutting blades 3 of the first row 2 and evenly distributed over the circumference of the base body 1. For the cutting blades 10, 11 and 12 of the third, fourth and fifth rows 5, 6 and 7, the statements made regarding the second row 4 apply accordingly. However, the number of cutting blades 10, 11 and 12 may be different from each other and in relation to the first row 2. It is also possible that they are arranged offset from one another on the circumference of the main body 1. Furthermore, the axial distances between the rows can be variable. The main body 1 is stretched on a clamping bush. The clamping bush 13 has a bore 14 for a clamping screw, by means of which the cutting tool is attached to the spindle of a processing machine.

Figur 2 zeigt die Skizze eines weiteren Ausführungsbeispiels der Erfindung. Auf einem Grundkörper 31 sind in einer ersten Reihe 32 Schneidmesser 33 über dem Umfang verteilt. An die erste Reihe 32 schließen sich axial beabstandet drei weitere Reihen 34, 35, 36 mit über dem Umfang des Grundkörpers 31 verteilten Schneidmessern 37, 38, 39 an. Die Flugkreisdurchmesser F1 der zweiten bis vierten Reihe 34, 35, 36 sind bei diesem Ausführungsbeispiel größer als derjenige der ersten Reihe 32. Die Schneidmesser 37, 38, 39 der zweiten bis vierten Reihe 34, 35 36 weisen jeweils spitze Schneidmesserprofile auf. Darüber hinaus ist in Figur 2 ein Werkstück 40 vor der Bearbeitung mit dem Zerspanwerkzeug gezeigt. Das Werkstück 40 besteht aus einem plattenförmigen Bauteil 41, das beidseitig mit einem Furnier 42 beschichtet ist. Das Furnier 42 steht über der Kante 43 des Bauteils 41 hinaus. Schließlich ist in Figur 2 ein Werkstück 44 während der Bearbeitung mit dem Zerspanwerkzeug gezeigt. FIG. 2 shows the sketch of a further embodiment of the invention. On a base body 31, 32 cutting blades 33 are distributed over the circumference in a first row. Three further rows 34, 35, 36 with cutting blades 37, 38, 39 distributed over the circumference of the main body 31 adjoin the first row 32 in an axially spaced manner. The circle diameter F 1 of the second to fourth row 34, 35, 36 are larger in this embodiment than that of the first row 32. The cutting blades 37, 38, 39 of the second to fourth row 34, 35 36 each have sharp cutting blade profiles. In addition, in FIG. 2 a workpiece 40 shown before machining with the cutting tool. The workpiece 40 consists of a plate-shaped component 41, which is coated on both sides with a veneer 42. The veneer 42 protrudes beyond the edge 43 of the component 41. Finally, in FIG. 2 a workpiece 44 shown during machining with the cutting tool.

Das in Figur 3 dargestellte Ausführungsbeispiel der Erfindung unterscheidet sich von dem in Figur 1 dargestellten Ausführungsbeispiel im Wesentlichen dadurch, dass die erste Reihe 51 aus einem Kreissägeblatt mit Sägezähnen 52 als Schneidmesser besteht und die weiteren Reihen aus einem Profilfräser mit lösbar oder verbundenen Schneiden besteht.This in FIG. 3 illustrated embodiment of the invention differs from that in FIG. 1 illustrated embodiment essentially in that the first row 51 consists of a circular saw blade with saw teeth 52 as a cutting blade and the other rows consists of a profile cutter with detachable or connected cutting.

Figur 4 zeigt das Zerspanwerkzeug aus Figur 3 in vereinfachter Darstellung zusammen mit einem Werkstück 61 vor der Bearbeitung und einem Werkstück 62 bei der Bearbeitung. FIG. 4 shows the cutting tool FIG. 3 in a simplified representation together with a workpiece 61 before machining and a workpiece 62 during machining.

Figur 5 zeigt den Profilquerschnitt eines Schneidmessers 71 mit ebenen Flanken 72. Der Winkel α wird durch die an die Zahnflanken 72 angelegten Geraden 73, 74, die durch die die schmalste 75 und größte 76 Zahnbreite definierenden Punkte 77, 78 bzw. 79, 80 verlaufen. Es ist deutlich zu erkennen, dass der Winkel α spitz ist. FIG. 5 shows the profile cross-section of a cutting blade 71 with flat edges 72. The angle α is through the applied to the tooth flanks 72 straight lines 73, 74 which extend through the narrowest 75 and largest 76 tooth width defining points 77, 78 and 79, 80. It can be clearly seen that the angle α is acute.

Das Schneidmesser 91 in Figur 6 weist konkave Flanken 92 auf.The cutting knife 91 in FIG. 6 has concave flanks 92.

Das Schneidmesser 95 in Figur 7 weist konvexe Flanken 96 auf.The cutting knife 95 in FIG. 7 has convex flanks 96.

In Figur 8 ist ein Schneidmesser 97 einer zweiten Reihe 98 dargestellt, bei dem die Spanebene 99 einen positiven Spanwinkel β aufweist.In FIG. 8 a cutting blade 97 of a second row 98 is shown, in which the chip plane 99 has a positive rake angle β.

BezugsziffernlisteReferences list

1
Grundkörper
2
erste Reihe
3
Schneidmesser der ersten Reihe
4
zweite Reihe
5
dritte Reihe
6
vierte Reihe
7
fünfte Reihe
8
Schneidmesser der zweiten Reihe
9
Schraube
10
Schneidmesser der dritten Reihe
11
Schneidmesser der vierten Reihe
12
Schneidmesser der fünften Reihe
13
Spannbüchse
14
Bohrung
31
Grundkörper
32
erste Reihe
33
Schneidmesser der ersten Reihe
34
zweite Reihe
35
dritte Reihe
36
vierte Reihe
37
Schneidmesser der zweiten Reihe
38
Schneidmesser der dritten Reihe
39
Schneidmesser der vierten Reihe
40
Werkstück vor der Bearbeitung
41
Bauteil
42
Furnier
43
Kante
44
Werkstück während der Bearbeitung
51
erste Reihe
52
Sägezahn
61
Werkstück vor der Bearbeitung
62
Werkstück während der Bearbeitung
71
Schneidmesser
72
Flanke
73
Gerade
74
Gerade
75
kleinste Zahnbreite
76
größte Zahnbreite
77
Punkt bei kleinster Breite
78
Punkt bei kleinster Breite
79
Punkt bei größter Breite
80
Punkt bei größter Breite
91
Schneidmesser
92
Flanke
95
Schneidmesser
96
Flanke
97
Schneidmesser
98
zweite Reihe
99
Spanebene
Re/dg
1
body
2
first row
3
Cutting knife of the first row
4
second row
5
third row
6
fourth row
7
fifth row
8th
Cutting knife of the second row
9
screw
10
Cutting knife of the third row
11
Cutting knife of the fourth row
12
Cutting knife of the fifth row
13
collet
14
drilling
31
body
32
first row
33
Cutting knife of the first row
34
second row
35
third row
36
fourth row
37
Cutting knife of the second row
38
Cutting knife of the third row
39
Cutting knife of the fourth row
40
Workpiece before machining
41
component
42
veneer
43
edge
44
Workpiece during machining
51
first row
52
sawtooth
61
Workpiece before machining
62
Workpiece during machining
71
cutting blade
72
flank
73
Just
74
Just
75
smallest tooth width
76
largest tooth width
77
Point at smallest width
78
Point at smallest width
79
Point at maximum width
80
Point at maximum width
91
cutting blade
92
flank
95
cutting blade
96
flank
97
cutting blade
98
second row
99
clamping level
Re / dg

Claims (11)

  1. Cutting tool with a base body (1, 31) and a plurality of cutters (3, 8, 33, 37) arranged distributed over the periphery in at least a first (2, 32) and a second (4, 34) row spaced apart axially with respect to one another, in which the cutters (3, 8, 33, 37) of the second row (4, 34) are configured differently with respect to the profile cross-section compared to the first row (2, 32), the cutters (8, 37) of the at least second row (4, 34) have a narrower tooth tip (75) relative to the tooth foot (76) in profile cross-section and the straight lines (73, 74) which are placed on either side of the tooth flanks (72, 92, 96) and run through the points (77, 78, 79, 80) defining the smallest (75) and largest (76) tooth width, enclose an acute angle (α), characterised in that the cutters (8, 37) of the second row (4, 34) have a greater circle of rotation diameter (F1) than the cutters (3, 33) of the first row (2, 32).
  2. Cutting tool according to claim 1, characterised by further axially spaced apart rows (5, 6, 7, 32, 34, 35, 36) of cutters (9, 10, 11, 12, 33, 37, 38, 39), which, in profile cross-section, are configured identically to the cutters (8, 37) of the second row (4, 34).
  3. Cutting tool according to claim 1, characterised in that the cutters (3, 33) of the first row (2, 32) are configured in one piece with the base body (1, 31).
  4. Cutting tool according to claim 1, characterised in that at least some of the cutters (3, 8, 9, 10, 11, 33, 37, 38, 39) can be detachably connected to the base body (1, 31).
  5. Cutting tool according to any one of the preceding claims, characterised in that the cutters (8, 9, 10, 11, 37, 38, 39) of the second (4, 34) and optionally further (5, 6, 7, 35, 36) row can be fastened in recesses arranged distributed over the periphery of the base body (1, 31).
  6. Cutting tool according to claim 1, characterised in that the cutters (8, 37) of the second row (4, 34) extend in the radial direction at least 3 mm beyond the circle of rotation of the first row (2, 32).
  7. Cutting tool according to claim 6, characterised in that the cutters (8, 37) of the second row (4, 34) extend in the radial direction at least 5 mm beyond the circle of rotation of the first row (2, 32).
  8. Cutting tool according to claim 1, characterised in that the angle (α) is smaller than 70°.
  9. Cutting tool according to claim 8, characterised by an angle (α) of 5° to 15°.
  10. Cutting tool according to any one of the preceding claims, characterised in that the cutters (8, 37) of the second (4, 34) and optionally further (5, 6, 7, 35, 36) row have tooth tips (75) with a maximum width of 3 mm in profile cross-section.
  11. Cutting tool according to any one of the preceding claims, characterised by a positive cutting angle (β) of the cutters (97) of the second row (98).
EP05025874A 2004-11-26 2005-11-28 cutting tool Revoked EP1661674B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05025874T PL1661674T3 (en) 2004-11-26 2005-11-28 cutting tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004057370A DE102004057370A1 (en) 2004-11-26 2004-11-26 cutting tool

Publications (2)

Publication Number Publication Date
EP1661674A1 EP1661674A1 (en) 2006-05-31
EP1661674B1 true EP1661674B1 (en) 2009-07-29

Family

ID=35677666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05025874A Revoked EP1661674B1 (en) 2004-11-26 2005-11-28 cutting tool

Country Status (7)

Country Link
EP (1) EP1661674B1 (en)
AT (1) ATE437732T1 (en)
DE (2) DE102004057370A1 (en)
DK (1) DK1661674T3 (en)
ES (1) ES2327535T3 (en)
PL (1) PL1661674T3 (en)
PT (1) PT1661674E (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1862681A (en) * 1930-04-12 1932-06-14 Arthur B Johnson Tool for surfacing and forming fibrous material
US2818094A (en) 1956-03-12 1957-12-31 Bury J Bowling Combination multiple saw and cutting head
DE1453265A1 (en) * 1962-08-07 1969-04-30 Alba Lennartz & Co Buelach Milling tool for the production of finger joint profiles
DE8532717U1 (en) * 1985-11-19 1986-01-23 HOWENA GmbH Wittenborn + Edel, 7443 Frickenhausen Disc-shaped tool for cutting and sizing
US4907920A (en) * 1989-01-18 1990-03-13 The Boeing Company Milling cutter for honeycomb core material
US5848564A (en) * 1997-02-24 1998-12-15 Vaagen; Duane Combination saw blade apparatus
DE19832499C2 (en) 1998-07-20 2002-07-18 Ledermann & Co cutting tool

Also Published As

Publication number Publication date
ATE437732T1 (en) 2009-08-15
DE502005007771D1 (en) 2009-09-10
ES2327535T3 (en) 2009-10-30
EP1661674A1 (en) 2006-05-31
PL1661674T3 (en) 2009-11-30
DE102004057370A1 (en) 2006-06-01
PT1661674E (en) 2009-08-13
DK1661674T3 (en) 2009-10-05

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