EP0941822A1 - Cutter head with hard metal cutting inserts for woodworking - Google Patents

Cutter head with hard metal cutting inserts for woodworking Download PDF

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Publication number
EP0941822A1
EP0941822A1 EP98103762A EP98103762A EP0941822A1 EP 0941822 A1 EP0941822 A1 EP 0941822A1 EP 98103762 A EP98103762 A EP 98103762A EP 98103762 A EP98103762 A EP 98103762A EP 0941822 A1 EP0941822 A1 EP 0941822A1
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EP
European Patent Office
Prior art keywords
cutter head
head body
cutting
radial
head according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98103762A
Other languages
German (de)
French (fr)
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EP0941822B1 (en
Inventor
di Santarossa de Marco & C. Utensilea S.A.S.
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UTENSILEA Sas
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UTENSILEA Sas
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE59811540T priority Critical patent/DE59811540D1/en
Priority to AT98103762T priority patent/ATE268676T1/en
Priority to EP98103762A priority patent/EP0941822B1/en
Priority to DK98103762T priority patent/DK0941822T3/en
Priority to ES98103762T priority patent/ES2223088T3/en
Application filed by UTENSILEA Sas filed Critical UTENSILEA Sas
Priority to PT98103762T priority patent/PT941822E/en
Priority to US09/115,482 priority patent/US6000449A/en
Publication of EP0941822A1 publication Critical patent/EP0941822A1/en
Application granted granted Critical
Publication of EP0941822B1 publication Critical patent/EP0941822B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/08—Cutter blocks; Other rotary cutting tools in the shape of disc-like members; Wood-milling cutters
    • B27G13/10—Securing the cutters, e.g. by clamping collars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/02—Cutter blocks; Other rotary cutting tools in the shape of long arbors, i.e. cylinder cutting blocks
    • B27G13/04—Securing the cutters by mechanical clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/12—Cutter blocks; Other rotary cutting tools for profile cutting

Definitions

  • the invention relates to a with interchangeable carbide inserts equipped knife head for woodworking.
  • Such cutter heads usually consist of a cutter head body in the form of a solid rotating body, on the circumference Cut-outs for the exchangeable carbide inserts and the associated clamping components are.
  • the holder takes place within these cutouts the carbide inserts usually by a clamping plate or a clamping wedge, which is tightened using clamping screws the insert is clamped and this in turn against one rear support surface spans, the support surface directly can be formed in the cutter head body or on a separate, also sitting in the recess and yourself on a counter surface of the cutter head body rear support plate can be formed.
  • a support plate In the recess are also positioning devices for radial and axial Alignment of the relevant insert provided in Shape of ground stop faces or dowel pins directly on the Cutter head bodies can be arranged or when in use a support plate can also be provided on this, wherein in this case, the support plate itself with appropriate Axial positioning means in the opening of the cutter head body and can be fixed radially.
  • the invention has for its object a cutter head with exchangeable carbide inserts for woodworking to create a significant relief with regard to the milling of profiles with a greater profile depth and the easy and correct positioning of the Brings cutting inserts in the cutter head body.
  • the basic solution to the problem according to the invention is in that already the construction of the cutter head body a completely different one from the usual practice Conception does not get through his training more than a rotating body with milled openings for insert holder, but through training in shape a central hub with one piece and plate-like or wing-like protruding radially outward from the hub Poor enough, but relatively thin thickness for Inclusion of the cutting plates, these arms as support plates are designed for the inserts and the inserts directly by means of clamping screws on these support plate-shaped Poor are stretched.
  • this cutter head construction according to the invention has the basic advantage that with strong profiling the Cutting the insert, so with a large profile depth for Milling strong plastic profiles, a fast and problem-free profiling of the tool body itself possible is because the necessary profile can be easily and quickly integrated into the relatively thin support plate-shaped arms of the cutter head body can be ground in.
  • the relative thin design of the cutter head body an enormous weight reduction achieved, which is beneficial in many ways.
  • the clamping of the inserts can be because of the support plate-shaped Arms of the cutter head carrier are easily accessible for this are much easier to accomplish than with conventional cutter heads.
  • Another essential aspect of the invention is positioning the carbide cutting tips in the invention Cutter head. This positioning must be in axial direction as well as in the radial direction with reference to the cutter head axes are made exactly.
  • conventional Cutter heads with their positioning devices must when mounting the inserts in the cutter head, while the Clamping the relevant insert in the insert holder done, the insert by the user at the same time both in the axial direction against an axial Stop surface as well as in the radial direction against a radial Be pressed. This pressing takes place with one hand, while with the other hand Key tool actuated to tighten the screws becomes.
  • the axial positioning takes place the insert through a fitting pin, which on Knife head body arranged, namely in the support surface of the relevant cutter head arm is used and with a interacting with it, axially-radially-inclined, precisely ground or incorporated surface of the cutting plate cooperates, which preferably by a slot flank oblique slot or slot in the insert is formed, in which or which of the fitting pin intervenes.
  • Figures 1 to 3 show the basic construction of the cutter head according to the invention. Although there as an embodiment one cutter head with two with 180 ° angular distances interchangeable carbide inserts is shown, this construction applies in an analogous manner also for cutter heads with 3, 4 or even more exchangeable Knife plates, which also depends on the size and diameter of the knife head depends.
  • the cutter head shown as an embodiment according to the The invention consists of a cutter head body 1 and can be replaced thereon clamped carbide inserts 2.
  • the cutter head body 1 consists of a shaft 11 for clamping, a hub part 12 formed in one piece therewith and a number, two in the present exemplary embodiment, of radially projecting from the hub part 12 and thus integrally formed plate-like arms 13 which each carry one of the cutting plates 2.
  • Fig. 3 shows a cross section along the section line III-III in Fig. 2 by a cutting plate 2 and this bearing cutter head body arm 13. From this - in context with Figures 1 and 2 - can be seen that the cutter head body arms as support plates for the cutting plates 21 are trained and adequate, but relative have small thickness, as in the drawings as well can be seen (particularly clearly visible in the right half of FIG. 1 and in FIG. 3) in the area near the hub can be thicker and thinner in the radially outer region the reduction in thickness can be continuous or how shown, graduated with the transitions producing Inclined surfaces can be formed.
  • the thinner radial outer part can also, as can be seen from the drawings, taper conically; also above and possibly also below (the latter not shown) may have an oblique taper the edge region of the cutter head body arm be.
  • This taper makes it easier, in particular, necessary Profiling according to the insert profile continue to work into the cutter head body arms, this incorporation in the tapered thinner edge areas the arms 13 without the need for excessive material removal and thus take place quickly and easily can.
  • the cutting plates 2 are, as shown in Figures 1 to 3 with the help of 2 clamping screws 3 with a large head directly clamped to the relevant cutter head body arm 13.
  • the preferred means for exact positioning of the Cutting plate 2 on the relevant cutter head body arm 13 are shown in Fig. 4. However, there are the clamping screws 3 omitted.
  • FIG. 4 shows a cutting plate 2 in a top view and has a radially outer cutting edge 21, an upper side edge 22, which can also serve as a cutting edge, a lower side edge 23 and a radially inner edge 24.
  • On the lower side edge 23 is preferably a rounded one Knobs 25 formed as a pressure piece.
  • On the radially inner one Edge 24 can have two stop knobs arranged at a distance 26 be formed as radial stop surfaces; Alternatively could also be the entire side edge 24 as a sharpened Stop surface may be provided. This on the inner edge 24 molded stop knobs 26 act radially on the inside radial stop surface formed on the relevant cutter head body arm 13 14 together.
  • the cutting plate 2 has an inclined Elongated hole 27, which, based on the axis of the cutter head, runs inclined in the axial / radial direction. Finally are two holes 28 in the insert 2 for receiving the clamping screws 3 are provided.
  • a fitting pin engages in the elongated hole 27 of the insert 2 15 a, which is inserted into the relevant cutter head body arm 13 is and with that of the lower side edge 23 with the as Flank surface 29 facing pressure piece serving knobs 25 of the slot 27 cooperates. Presses during assembly the insert 2 the user with the thumb on the as Pressure piece molded on knobs 25 of the lower side edge 23 the cutting plate to move this in the axial direction (based on the Press the knife head), lies the lower side of the oblong hole 29 as an inclined surface on the fitting pin 15 and sets the axially acting pressing force partially into a radially acting Component around which the two radial stop knobs 26 the radially inner edge 24 of the insert against the Radial stop surface 14 of the cutter head body arm 13 urges.
  • the through holes used to hold the clamping screws 3 28 in the insert 2 are larger than the corresponding ones threaded holes formed in the cutter head body arm 13 16 designed for the clamping screws, so that necessary positioning play for the insert 2 given is.
  • the clamping screws 3 are with accordingly large heads for a secure clamping of the inserts 2 to accomplish.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Inorganic Fibers (AREA)
  • Ceramic Products (AREA)
  • Milling Processes (AREA)
  • Laminated Bodies (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Powder Metallurgy (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The hard metal cutter plates (2) are radially and axially fixed and detachably clamped onto the cutter head main body (1) by means of positioning pieces. The cutter head main body has a central hub part (12) with radially protruding arms (13). Each arm represents a support surface for a cutter plate. The interacting positioning pieces position the cutter plates axially and radially on the cutter head main body.

Description

Die Erfindung betrifft einen mit auswechselbaren Hartmetall-Schneidplatten bestückten Messerkopf für die Holzbearbeitung. Solche Messerköpfe bestehen üblicherweise aus einem Messerkopfkörper in Form eines massiven Drehkörpers, an dessen Umfang Aussparungen zur Aufnahme der auswechselbaren Hartmetall-Schneidplatten und der zugehörigen Spannbauteile gebildet sind. Innerhalb dieser Aussparungen erfolgt die Halterung der Hartmetall-Schneidplatten üblicherweise durch eine Spannplatte bzw. einen Spannkeil, der mittels Spannschrauben gegen die Schneidplatte gespannt wird und diese wiederum gegen eine rückwärtige Stützfläche spannt, wobei die Stützfläche direkt im Messerkopfkörper gebildet sein kann oder an einer gesonderten, ebenfalls in der Aussparung sitzenden und sich ihrerseits an einer Gegenfläche des Messerkopfkörpers abstützenden rückwärtigen Stützplatte gebildet sein kann. In der Aussparung sind auch Positioniermittel zum radialen und axialen Ausrichten der betreffenden Schneidplatte vorgesehen, die in Form geschliffener Anschlagflächen oder Paßstifte direkt am Messerkopfkörper angeordnet sein können oder bei Verwendung einer Stützplatte auch an dieser vorgesehen sein können, wobei die Stützplatte in diesem Fall selbst mit entsprechenden Positioniermitteln in der Öffnung des Messerkopfkörpers axial und radial festlegbar ist.The invention relates to a with interchangeable carbide inserts equipped knife head for woodworking. Such cutter heads usually consist of a cutter head body in the form of a solid rotating body, on the circumference Cut-outs for the exchangeable carbide inserts and the associated clamping components are. The holder takes place within these cutouts the carbide inserts usually by a clamping plate or a clamping wedge, which is tightened using clamping screws the insert is clamped and this in turn against one rear support surface spans, the support surface directly can be formed in the cutter head body or on a separate, also sitting in the recess and yourself on a counter surface of the cutter head body rear support plate can be formed. In the recess are also positioning devices for radial and axial Alignment of the relevant insert provided in Shape of ground stop faces or dowel pins directly on the Cutter head bodies can be arranged or when in use a support plate can also be provided on this, wherein in this case, the support plate itself with appropriate Axial positioning means in the opening of the cutter head body and can be fixed radially.

Werden solche herkömmlichen Messerköpfe zum Profilfräsen von Holzleisten oder dgl. eingesetzt, muß bei größerer Profiltiefe auch der Werkzeugkörper entsprechend profiliert werden, damit einerseits die Schneidplatten adäquat und sicher gehalten werden können, andererseits aber der Messerkopfkörper das Fräsen des betreffenden Profils nicht selbst behindert.Are such conventional cutter heads for profile milling of Wooden slats or the like. Used, must be with a greater profile depth the tool body is profiled accordingly, on the one hand, the cutting inserts are adequately and securely held can be, but on the other hand the cutter head body Milling the profile in question does not itself hinder.

Ein weiteres, bei Messerköpfen mit auswechselbaren Hartmetall-Schneidplatten bekanntes Problem ist die Sicherstellung der genauen und korrekten Positionierung aller Schneidplatten im Messerkopf, was eine Grundvoraussetzung zum Erhalten eines sauberen Arbeitsergebnisses darstellt.Another, for cutter heads with exchangeable carbide inserts known problem is securing the exact and correct positioning of all inserts in the knife head, which is a basic requirement for getting one represents a clean work result.

Der Erfindung liegt die Aufgabe zugrunde, einen Messerkopf mit auswechselbaren Hartmetall-Schneidplatten für die Holzbearbeitung zu schaffen, der eine wesentliche Erleichterung hinsichtlich des Fräsens von Profilen mit auch größerer Profiltiefe und der leichten und korrekten Positionierung der Schneidplatten im Messerkopfkörper bringt.The invention has for its object a cutter head with exchangeable carbide inserts for woodworking to create a significant relief with regard to the milling of profiles with a greater profile depth and the easy and correct positioning of the Brings cutting inserts in the cutter head body.

Diese Aufgabe wird erfindungsgemäß durch den im Anspruch 1 angegebenen und in den Unteransprüchen vorteilhalft weiter ausgestalteten Messerkopf nach der Erfindung gelöst.This object is achieved by the in claim 1 indicated and advantageous in the subclaims configured cutter head solved according to the invention.

Die grundsätzliche Lösung der erfindungsgemäßen Aufgabe besteht darin, daß bereits die Konstruktion des Messerkopfkörpers abweichend von der bisher üblichen Praxis eine ganz andere Konzeption erhält, nämlich durch seine Ausbildung nicht mehr als Drehkörper mit darin eingefrästen Aufnahmeöffnungen zur Schneidplattenhalterung, sondern durch Ausbildung in Form einer mittigen Nabe mit damit einstückig ausgebildeten und von der Nabe radial nach außen wegragenden platten- bzw. flügelartigen Armen ausreichender, aber relativ dünner Dicke zur Aufnahme der Schneidplatten, wobei diese Arme als Stützplatten für die Schneidplatten ausgebildet sind und die Schneidplatten direkt mittels Spannschrauben auf diesen stützplattenförmigen Armen aufgespannt sind.The basic solution to the problem according to the invention is in that already the construction of the cutter head body a completely different one from the usual practice Conception does not get through his training more than a rotating body with milled openings for insert holder, but through training in shape a central hub with one piece and plate-like or wing-like protruding radially outward from the hub Poor enough, but relatively thin thickness for Inclusion of the cutting plates, these arms as support plates are designed for the inserts and the inserts directly by means of clamping screws on these support plate-shaped Poor are stretched.

Diese erfindungsgemäße Messerkopfkonstruktion hat zum einen den grundlegenden Vorteil, daß bei starker Profilierung der Schneiden der Schneidplatte, also mit großer Profiltiefe zum Fräsen stark plastischer Profilierungen, ein schnelles und problemloses Profilieren des Werkzeugkörpers selbst möglich ist, da sich das notwendige Profil leicht und schnell in die relativ dünnen stützplattenförmigen Arme des Messerkopfkörpers einschleifen läßt. Zum anderen wird durch die relativ dünne Ausführung des Messerkopfkörpers eine enorme Gewichtsreduzierung erreicht, die in vieler Hinsicht vorteilhaft ist. Das Spannen der Schneidplatten läßt sich, weil die stützplattenförmigen Arme des Messerkopfträgers hierfür so leicht zugänglich sind, deutlich einfacher bewerkstelligen als bei herkömmlichen Messerköpfen.On the one hand, this cutter head construction according to the invention has the basic advantage that with strong profiling the Cutting the insert, so with a large profile depth for Milling strong plastic profiles, a fast and problem-free profiling of the tool body itself possible is because the necessary profile can be easily and quickly integrated into the relatively thin support plate-shaped arms of the cutter head body can be ground in. Second, the relative thin design of the cutter head body an enormous weight reduction achieved, which is beneficial in many ways. The clamping of the inserts can be because of the support plate-shaped Arms of the cutter head carrier are easily accessible for this are much easier to accomplish than with conventional cutter heads.

Ein weiterer wesentlicher Aspekt der Erfindung ist die Positionierung der Hartmetall-Schneidplatten in dem erfindungsgemäßen Messerkopf. Diese Positionierung muß sowohl in axialer Richtung als auch in radialer Richtung mit Bezug auf die Messerkopfachse exakt vorgenommen werden. Bei herkömmlichen Messerköpfen mit ihren Positionierungseinrichtungen muß bei der Montage der Schneidplatten im Messerkopf, während das Festspannen der betreffenden Schneidplatte in der Schneidplattenaufnahme erfolgt, die Schneidplatte vom Benutzer gleichzeitig sowohl in axialer Richtung gegen eine axiale Anschlagfläche als auch in radialer Richtung gegen eine radiale Anschlagfläche gedrückt werden. Dieses Andrücken erfolgt mit der einen Hand, während mit der anderen Hand das Schlüsselwerkzeug zum Festspannen der Schrauben betätigt wird. Bei den herkömmlichen Messerköpfen kann es dabei vorkommen, daß unbeabsichtigt ein sauberes Anliegen der Anschlagflächen der Schneidplatte an den Anschlagflächen der Schneidplattenaufnahme bzw. des Messerkopfes doch nicht zustande kommt, wenn in irgendeinem Stadium die Schneidplatte etwas verrutscht oder das Andrücken tatsächlich nicht durchgängig in beiden Richtungen gleichzeitig erfolgt.Another essential aspect of the invention is positioning the carbide cutting tips in the invention Cutter head. This positioning must be in axial direction as well as in the radial direction with reference to the cutter head axes are made exactly. With conventional Cutter heads with their positioning devices must when mounting the inserts in the cutter head, while the Clamping the relevant insert in the insert holder done, the insert by the user at the same time both in the axial direction against an axial Stop surface as well as in the radial direction against a radial Be pressed. This pressing takes place with one hand, while with the other hand Key tool actuated to tighten the screws becomes. With conventional cutter heads, it can happen that that inadvertently a clean contact of the stop surfaces the insert on the stop surfaces of the The insert holder or the cutter head did not work comes when the insert at any stage something is slipping or the pressure is actually not consistently in both directions simultaneously.

Bei der erfindungsgemäßen Anordnung erfolgt die axiale Positionierung der Schneidplatte durch einen Paßzapfen, der am Messerkopfkörper angeordnet, nämlich in die Stützfläche des betreffenden Messerkopfarms eingesetzt ist und mit einer damit zusammenwirkenden, axial-radial-geneigten, präzise geschliffenen bzw. eingearbeiteten Fläche der Schneidplatte zusammenwirkt, die vorzugsweise durch eine Schlitzflanke eines schräg verlaufendes Schlitzes bzw. Langlochs in der Schneidplatte gebildet ist, in welchen bzw. welches der Paßzapfen eingreift. Beim Einspannen der Schneidplatte genügt es deshalb, die Schneidplatte nur in einer Richtung, nämlich axial, gegen den als Anschlag dienenden Paßzapfen anzudrücken, wobei das Zusammenwirken der Schrägfläche mit dem Paßzapfen die Andrückkraft in eine axiale und in eine radiale Komponente umsetzt, so daß dadurch sichergestellt ist, daß durch das Andrücken der Schneidplatte in nur einer Richtung diese sowohl axial gegen den Paßzapfen als auch radial gegen die vorgesehene Radialanschlagfläche am Messerkopfkörper gedrückt wird. Das Festspannen der Schneidplatte am Messerkopf ist daher leichter und mit geringerer Fehlerwahrscheinlichkeit zu bewerkstelligen.In the arrangement according to the invention, the axial positioning takes place the insert through a fitting pin, which on Knife head body arranged, namely in the support surface of the relevant cutter head arm is used and with a interacting with it, axially-radially-inclined, precisely ground or incorporated surface of the cutting plate cooperates, which preferably by a slot flank oblique slot or slot in the insert is formed, in which or which of the fitting pin intervenes. When clamping the insert, it is therefore sufficient to the insert only in one direction, namely axially, press against the fitting pin serving as a stop, whereby the interaction of the inclined surface with the fitting pin the pressing force converted into an axial and a radial component, so that it is ensured that by pressing the insert in only one direction this both axially against the fitting pin and radially against the intended Radial stop surface pressed on the cutter head body becomes. The cutting plate is clamped on the cutter head therefore easier and with less chance of error accomplish.

Ein Ausführungsbeispiel der Erfindung ist in den anliegenden schematischen Zeichnungen mehr im einzelnen dargestellt, in welchen zeigt:

Fig. 1
eine Seitenansicht eines Messerkopfes nach der Erfindung mit zwei um 180° versetzt angeordneten auswechselbaren Schneidplatten,
Fig. 2
eine um 90° gedrehte Seitenansicht des in Fig. 1 dargestellten Messerkopfes,
Fig. 3
einen Querschnitt durch einen der beiden Messerkopfkörperarme längs der Linie III-III in Fig. 2, und
Fig. 4
eine schematische Darstellung einer Schneidplatte und der damit zusammenwirkenden Positionierungsmittel an dem betreffenden Messerkopfkörperarm.
An embodiment of the invention is shown in more detail in the attached schematic drawings, in which:
Fig. 1
2 shows a side view of a cutter head according to the invention with two interchangeable cutting plates arranged offset by 180 °,
Fig. 2
2 shows a side view of the cutter head shown in FIG. 1 rotated by 90 °,
Fig. 3
a cross section through one of the two cutter head body arms along the line III-III in Fig. 2, and
Fig. 4
is a schematic representation of a cutting plate and the interacting positioning means on the relevant cutter head body arm.

Die Figuren 1 bis 3 zeigen die grundsätzliche Konstruktion des erfindungsgemäßen Messerkopfes. Obwohl dort als Ausführungsbeispiel ein Messerkopf mit zwei mit 180°-Winkelabständen angeordneten auswechselbaren Hartmetall-Schneidplatten dargestellt ist, gilt diese Konstruktion in analoger Weise auch für Messerköpfe mit 3, 4 oder noch mehr auswechselbaren Messerplatten, was auch von Größe und Durchmesser des Messerkopfes abhängt.Figures 1 to 3 show the basic construction of the cutter head according to the invention. Although there as an embodiment one cutter head with two with 180 ° angular distances interchangeable carbide inserts is shown, this construction applies in an analogous manner also for cutter heads with 3, 4 or even more exchangeable Knife plates, which also depends on the size and diameter of the knife head depends.

Der als Ausführungsbeispiel dargestellte Messerkopf nach der Erfindung besteht aus einem Messerkopfkörper 1 und daran auswechselbar festgespannten Hartmetall-Schneidplatten 2.The cutter head shown as an embodiment according to the The invention consists of a cutter head body 1 and can be replaced thereon clamped carbide inserts 2.

Der Messerkopfkörper 1 besteht aus einem Schaft 11 zum Einspannen, einem damit einstückig ausgebildeten Nabenteil 12 und einer Anzahl, beim vorliegenden Ausführungsbeispiel zwei, von vom Nabenteil 12 im wesentlichen radial wegragenden und damit einstückig ausgebildeten plattenartigen Armen 13, die jeweils eine der Schneidplatten 2 tragen.The cutter head body 1 consists of a shaft 11 for clamping, a hub part 12 formed in one piece therewith and a number, two in the present exemplary embodiment, of radially projecting from the hub part 12 and thus integrally formed plate-like arms 13 which each carry one of the cutting plates 2.

Die exakte Orientierung der Messerkopfkörperarme 13 hängt selbstverständlich vom jeweiligen Einsatzzweck des Messerkopfes ab, und insofern ist die dargestellte Ausführungsform nur beispielhaft zu verstehen.The exact orientation of the cutter head body arms 13 depends of course, depending on the intended use of the cutter head from, and in this respect, the embodiment shown to be understood only as an example.

Fig. 3 zeigt einen Querschnitt entsprechend der Schnittlinie III-III in Fig. 2 durch eine Schneidplatte 2 und den diese tragenden Messerkopfkörperarm 13. Daraus ist - im Zusammenhang mit den Figuren 1 und 2 - ersichtlich, daß die Messerkopfkörperarme als Stützplatten für die Schneidplatten 21 ausgebildet sind und eine zwar ausreichende, aber doch relativ geringe Dicke haben, die, wie in den Zeichnungen ebenfalls ersichtlich ist (besonders deutlich sichtbar in der rechten Hälfte der Fig. 1 und in Fig. 3) im nabennahen Bereich dicker und im radial äußeren Bereich dünner sein kann wobei die Dickenverringerung stetig verlaufen kann oder, wie dargestellt, abgestuft mit die Übergänge herstellenden Schrägflächen ausgebildet sein kann. Der dünnere radial äußere Teil kann auch, wie aus den Zeichnungen ersichtlich, sich konisch verjüngend auslaufen; auch oben sowie ggfs. auch unten (letzteres nicht dargestellt) kann eine schräge Verjüngung des Randbereichs des Messerkopfkörperarms vorgesehen sein. Diese Verjüngung erleichtert es insbesondere, notwendige Profilierungen entsprechend der Schneidplattenprofilierung sich in die Messerkopfkörperarme fortsetzend einzuarbeiten, wobei diese Einarbeitung in den verjüngten dünneren Randbereichen der Arme 13 ohne Notwendigkeit eines übermäßigen Materialabtrags und damit schnell und einfach vonstatten gehen kann.Fig. 3 shows a cross section along the section line III-III in Fig. 2 by a cutting plate 2 and this bearing cutter head body arm 13. From this - in context with Figures 1 and 2 - can be seen that the cutter head body arms as support plates for the cutting plates 21 are trained and adequate, but relative have small thickness, as in the drawings as well can be seen (particularly clearly visible in the right half of FIG. 1 and in FIG. 3) in the area near the hub can be thicker and thinner in the radially outer region the reduction in thickness can be continuous or how shown, graduated with the transitions producing Inclined surfaces can be formed. The thinner radial outer part can also, as can be seen from the drawings, taper conically; also above and possibly also below (the latter not shown) may have an oblique taper the edge region of the cutter head body arm be. This taper makes it easier, in particular, necessary Profiling according to the insert profile continue to work into the cutter head body arms, this incorporation in the tapered thinner edge areas the arms 13 without the need for excessive material removal and thus take place quickly and easily can.

Die Schneidplatten 2 sind, wie in den Figuren 1 bis 3 dargestellt mit Hilfe von 2 Spannschrauben 3 mit großem Kopf direkt an dem betreffenden Messerkopfkörperarm 13 festgespannt. Die bevorzugten Mittel zur exakten Positionierung der Schneidplatte 2 auf den betreffenden Messerkopfkörperarm 13 sind in Fig. 4 dargestellt. Dort sind allerdings die Spannschrauben 3 weggelassen.The cutting plates 2 are, as shown in Figures 1 to 3 with the help of 2 clamping screws 3 with a large head directly clamped to the relevant cutter head body arm 13. The preferred means for exact positioning of the Cutting plate 2 on the relevant cutter head body arm 13 are shown in Fig. 4. However, there are the clamping screws 3 omitted.

In Fig. 4 ist eine Schneidplatte 2 in Draufsicht dargestellt und weist eine radial äußere Schneidkante 21, eine obere Seitenkante 22, die ebenfalls als Schneidkante dienen kann, eine untere Seitenkante 23 und eine radial innere Kante 24 auf. An der unteren Seitenkante 23 ist vorzugsweise ein gerundeter Noppen 25 als Druckstück angeformt. An der radial inneren Kante 24 können zwei mit Abstand angeordnete Anschlagnoppen 26 als Radialanschlagflächen gebildet sein; alternativ dazu könnte auch die ganze Seitenkante 24 als genau geschliffene Anschlagfläche vorgesehen sein. Diese an der inneren Kante 24 angeformten Anschlagnoppen 26 wirken mit einer radial innen an dem betreffenden Messerkopfkörperarm 13 gebildeten Radialanschlagfläche 14 zusammen.4 shows a cutting plate 2 in a top view and has a radially outer cutting edge 21, an upper side edge 22, which can also serve as a cutting edge, a lower side edge 23 and a radially inner edge 24. On the lower side edge 23 is preferably a rounded one Knobs 25 formed as a pressure piece. On the radially inner one Edge 24 can have two stop knobs arranged at a distance 26 be formed as radial stop surfaces; Alternatively could also be the entire side edge 24 as a sharpened Stop surface may be provided. This on the inner edge 24 molded stop knobs 26 act radially on the inside radial stop surface formed on the relevant cutter head body arm 13 14 together.

Weiter weist die Schneidplatte 2 ein schräg verlaufendes Langloch 27 auf, das, bezogen auf die Achse des Messerkopfes, in axialer/radialer Richtung geneigt verläuft. Schließlich sind in der Schneidplatte 2 zwei Bohrungen 28 zur Aufnahme der Spannschrauben 3 vorgesehen.Furthermore, the cutting plate 2 has an inclined Elongated hole 27, which, based on the axis of the cutter head, runs inclined in the axial / radial direction. Finally are two holes 28 in the insert 2 for receiving the clamping screws 3 are provided.

In das Langloch 27 der Schneidplatte 2 greift ein Passzapfen 15 ein, der in den betreffenden Messerkopfkörperarm 13 eingesetzt ist und mit der der unteren Seitenkante 23 mit dem als Druckstück dienenden Noppen 25 zugewandten Flankenfläche 29 des Langlochs 27 zusammenwirkt. Drückt während des Montierens der Schneidplatte 2 der Benutzer mit dem Daumen auf den als Druckstück angeformten Noppen 25 der unteren Seitenkante 23 der Schneidplatte, um diese in Axialrichtung (bezogen auf den Messerkopf) anzudrücken, liegt die untere Langloch-Flankenfläche 29 als Schrägfläche am Passzapfen 15 an und setzt die axial wirkende Andrückkraft teilweise in eine radial wirkende Komponente um, welche die beiden Radialanschlagnoppen 26 an der radial inneren Kante 24 der Schneidplatte gegen die Radialanschlagfläche 14 des Messerkopfkörperarms 13 drängt.A fitting pin engages in the elongated hole 27 of the insert 2 15 a, which is inserted into the relevant cutter head body arm 13 is and with that of the lower side edge 23 with the as Flank surface 29 facing pressure piece serving knobs 25 of the slot 27 cooperates. Presses during assembly the insert 2 the user with the thumb on the as Pressure piece molded on knobs 25 of the lower side edge 23 the cutting plate to move this in the axial direction (based on the Press the knife head), lies the lower side of the oblong hole 29 as an inclined surface on the fitting pin 15 and sets the axially acting pressing force partially into a radially acting Component around which the two radial stop knobs 26 the radially inner edge 24 of the insert against the Radial stop surface 14 of the cutter head body arm 13 urges.

Die zur Aufnahme der Spannschrauben 3 dienenden Durchgangsbohrungen 28 in der Schneidplatte 2 sind größer als die entsprechenden, im Messerkopfkörperarm 13 gebildeten Gewindebohrungen 16 für die Spannschrauben ausgebildet, so daß das notwendige Positionierungsspiel für die Schneidplatte 2 gegeben ist. Die Spannschrauben 3 sind mit entsprechend großen Köpfen versehen, um ein sicheres Spannen der Schneidplatten 2 zu bewerkstelligen.The through holes used to hold the clamping screws 3 28 in the insert 2 are larger than the corresponding ones threaded holes formed in the cutter head body arm 13 16 designed for the clamping screws, so that necessary positioning play for the insert 2 given is. The clamping screws 3 are with accordingly large heads for a secure clamping of the inserts 2 to accomplish.

Claims (10)

Mit auswechselbaren Hartmetall-Schneidplatten (2) bestückter Messerkopf für die Holzbearbeitung, bestehend aus einem Messerkopfkörper (1) und daran mit Positionierungsmitteln (14, 15, 26, 27) radial und axial festlegbaren und lösbar festspannbaren Hartmetall-Schneidplatten (2), dadurch gekennzeichnet, daß der Messerkopfkörper (1) an einem mittigen Nabenteil (12) einstückig angeformte und von diesem etwa radial wegragende Arme (13) aufweist, die jeweils eine Stützfläche zur Auflage einer Schneidplatte (2) aufweisen und an welchen die Schneidplatten (2) direkt aufgespannt sind, wobei die miteinander zusammenwirkenden Positionierungsmittel (14, 15, 26, 27) zur axialen und radialen Positionierung der Schneidplatten am Messerkopfkörper an der Schneidplatte und am betreffenden Messerkopfkörperarm (13) gebildet sind.Fitted with interchangeable carbide inserts (2) Knife head for woodworking, consisting of one Cutter head body (1) and with positioning means (14, 15, 26, 27) radially and axially fixable and detachable fixed carbide cutting plates (2), characterized in that that the cutter head body (1) on a central hub part (12) integrally formed and approximately radial from this projecting arms (13), each having a support surface for supporting a cutting plate (2) and on which the cutting plates (2) are clamped directly, the interacting positioning means (14, 15, 26, 27) for the axial and radial positioning of the inserts on the cutter head body on the cutting insert and on the relevant one Knife head body arm (13) are formed. Messerkopf nach Anspruch 1, dadurch gekennzeichnet, daß jeder Messerkopfkörperarm (13) eine plattenartige Form hat.Cutter head according to claim 1, characterized in that each cutter head body arm (13) has a plate-like shape. Messerkopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dicke jedes Messerkopfkörperarms (13) sich radial nach außen stufig oder stetig verringert.Cutter head according to claim 1 or 2, characterized in that that the thickness of each cutter head body arm (13) is radial gradually or gradually reduced to the outside. Messerkopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Messerkopfkörperarme (13) im Bereich der oder jeder Schneidkante der Schneidplatten (2) abgeschrägt sind. Cutter head according to one of claims 1 to 3, characterized in that that the cutter head body arms (13) in the area the or each cutting edge of the cutting plates (2) beveled are. Messerkopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schneidplatten (2) mittels Spannschrauben (3) unmittelbar auf den Messerkopfkörperarmen (13) aufgespannt sind.Cutter head according to one of claims 1 to 4, characterized in that that the cutting plates (2) by means of clamping screws (3) clamped directly on the cutter head body arms (13) are. Messerkopf nach Anspruch 5, dadurch gekennzeichnet, daß die Schneldplatten (2) Schraubendurchgangslöcher (28) aufweisen, durch welche die Schraubenbolzen der Spannschrauben (3) mit Radialspiel hindurchverlaufen, und daß die Spannschrauben (3) zum Festspannen der Schneidplatten (2) mit entsprechend großen Köpfen ausgestattet sind.Cutter head according to claim 5, characterized in that the fastener plates (2) have screw through holes (28), through which the bolts of the clamping screws (3) run through with radial play, and that the clamping screws (3) for clamping the inserts (2) with are equipped with appropriately large heads. Messerkopf nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß jede Schneidplatte (2) mit Radialanschlagflächen (26) zum Zusammenwirken mit einer radialen Gegenfläche (14) am Messerkopfkörper (1) bzw. den betreffenden Messerkopfkörperarm (13) sowie mit einer axial/radial geneigt verlaufenden schrägen Anschlagfläche (29) ausgebildet und der betreffende Messerkopfkörperarm (13) mit einem mit der schrägen Anschlagfläche zusammenwirkenden Paßzapfen (15) versehen ist.Cutter head according to one of claims 1 to 6, characterized in that that each insert (2) with radial stop surfaces (26) for cooperation with a radial counter surface (14) on the cutter head body (1) or the relevant one Cutter head body arm (13) and with an axially / radially inclined extending oblique stop surface (29) and the relevant cutter head body arm (13) with a sloping stopper interacting fitting pin (15) is provided. Messerkopf nach Anspruch 7, dadurch gekennzeichnet, daß die schräge Anschlagfläche (29) eine Flankenfläche eines in der Schneidplatte (2) gebildeten Langlochs (27) oder Schlitzes ist.Cutter head according to claim 7, characterized in that the oblique stop surface (29) is a flank surface of an in the cutting plate (2) formed elongated hole (27) or Slit is. Messerkopf nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die Radialanschlagflächen (26) der Schneidplatte (2) durch an deren radial innenliegender Kante (24) angeformte Anschlagnoppen gebildet sind.Cutter head according to claim 7 or 8, characterized in that that the radial abutment surfaces (26) of the cutting plate (2) by molded on the radially inner edge (24) Stop knobs are formed. Schneidplatte zur Verwendung in einem Messerkopf nach einem der Ansprüche 1 bis 9 mit dem die Schneidplatte betreffenden Merkmalen nach einem der Ansprüche 7 bis 9.Cutting insert for use in a cutter head one of claims 1 to 9 with the cutting plate concerned Features according to one of claims 7 to 9.
EP98103762A 1998-01-07 1998-03-04 Hard metal cutting insert for woodworking Expired - Lifetime EP0941822B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT98103762T ATE268676T1 (en) 1998-03-04 1998-03-04 CARBIDE CUTTING PLATE FOR WOODWORKING
EP98103762A EP0941822B1 (en) 1998-03-04 1998-03-04 Hard metal cutting insert for woodworking
DK98103762T DK0941822T3 (en) 1998-03-04 1998-03-04 Carbide inserts for woodworking
ES98103762T ES2223088T3 (en) 1998-03-04 1998-03-04 METAL CARBIDE PLATES FOR APPLICATION ON KNIFE HEADS.
DE59811540T DE59811540D1 (en) 1998-03-04 1998-03-04 Carbide insert for woodworking
PT98103762T PT941822E (en) 1998-03-04 1998-03-04 HARD METAL CUTTING PLATE FOR WOOD MACHINING
US09/115,482 US6000449A (en) 1998-01-07 1998-07-15 Cutting head with exchangeable hard-metal cutting blades for wood working

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98103762A EP0941822B1 (en) 1998-03-04 1998-03-04 Hard metal cutting insert for woodworking

Publications (2)

Publication Number Publication Date
EP0941822A1 true EP0941822A1 (en) 1999-09-15
EP0941822B1 EP0941822B1 (en) 2004-06-09

Family

ID=8231522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98103762A Expired - Lifetime EP0941822B1 (en) 1998-01-07 1998-03-04 Hard metal cutting insert for woodworking

Country Status (6)

Country Link
EP (1) EP0941822B1 (en)
AT (1) ATE268676T1 (en)
DE (1) DE59811540D1 (en)
DK (1) DK0941822T3 (en)
ES (1) ES2223088T3 (en)
PT (1) PT941822E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3403789A1 (en) * 2017-05-18 2018-11-21 Leitz GmbH & Co. KG Milling cutter tool with a disc-shaped base body

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1710097A (en) * 1927-06-08 1929-04-23 Mattison Machine Works Knife holder for cutter heads
US2579615A (en) * 1949-05-19 1951-12-25 Sabo William Albert Rotary cutterhead with radially extended blade support
DE2306010A1 (en) * 1972-02-29 1973-09-20 Athoze CUTTERS FOR THE PRODUCTION OF CONVEX SURFACES
EP0587102A1 (en) * 1992-09-11 1994-03-16 KARL M. REICH MASCHINENFABRIK GmbH Edge milling machine with milling cutter
DE29800133U1 (en) * 1998-01-07 1998-03-12 Marco Domenico De Positioning of hard metal inserts in cutter heads

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1710097A (en) * 1927-06-08 1929-04-23 Mattison Machine Works Knife holder for cutter heads
US2579615A (en) * 1949-05-19 1951-12-25 Sabo William Albert Rotary cutterhead with radially extended blade support
DE2306010A1 (en) * 1972-02-29 1973-09-20 Athoze CUTTERS FOR THE PRODUCTION OF CONVEX SURFACES
EP0587102A1 (en) * 1992-09-11 1994-03-16 KARL M. REICH MASCHINENFABRIK GmbH Edge milling machine with milling cutter
DE29800133U1 (en) * 1998-01-07 1998-03-12 Marco Domenico De Positioning of hard metal inserts in cutter heads

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3403789A1 (en) * 2017-05-18 2018-11-21 Leitz GmbH & Co. KG Milling cutter tool with a disc-shaped base body

Also Published As

Publication number Publication date
DE59811540D1 (en) 2004-07-15
DK0941822T3 (en) 2004-10-18
EP0941822B1 (en) 2004-06-09
PT941822E (en) 2004-10-29
ES2223088T3 (en) 2005-02-16
ATE268676T1 (en) 2004-06-15

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