EP0205884A1 - Wood-milling cutter - Google Patents

Wood-milling cutter Download PDF

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Publication number
EP0205884A1
EP0205884A1 EP86106504A EP86106504A EP0205884A1 EP 0205884 A1 EP0205884 A1 EP 0205884A1 EP 86106504 A EP86106504 A EP 86106504A EP 86106504 A EP86106504 A EP 86106504A EP 0205884 A1 EP0205884 A1 EP 0205884A1
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EP
European Patent Office
Prior art keywords
knife
knives
cutter
cutting edge
tool 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
EP86106504A
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German (de)
French (fr)
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EP0205884B1 (en
Inventor
Peter Landtwing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pela AG Werkzeugfabrik
Original Assignee
Pela AG Werkzeugfabrik
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
Application filed by Pela AG Werkzeugfabrik filed Critical Pela AG Werkzeugfabrik
Priority to AT86106504T priority Critical patent/ATE53786T1/en
Publication of EP0205884A1 publication Critical patent/EP0205884A1/en
Application granted granted Critical
Publication of EP0205884B1 publication Critical patent/EP0205884B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27GACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00Cutter blocks; Other rotary cutting tools
    • B27G13/08Cutter blocks; Other rotary cutting tools in the shape of disc-like members; Wood-milling cutters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/20Edge trimming saw blades or tools combined with means to disintegrate waste

Definitions

  • Wood milling tools according to the preamble of claim 1 are known from prior use. These tools are relatively limited in their application.
  • the object of the present innovation is to develop a tool according to the preamble of claim 1 in such a way that it can be used in many ways. This object is achieved by the characterizing features of claim 1.
  • the wood milling tool shown comprises a disk-shaped carrier 1 with a central bore 2 for clamping onto the mandrel of a machine tool.
  • two grooves 20 for receiving a reversible knife 5 and a clamping wedge 21 are milled offset to the radial direction, so that the knife 5 cuts with a pulling cut.
  • two further grooves 30 are milled, offset by 90 ° with respect to the grooves 20, for each additional turning knife 6 with a clamping wedge 31.
  • Four additional grooves 40, 50 are milled on the peripheral surface 9 of the carrier 1 to receive four further knives 7, 8 with clamping wedges 41, 51, two knives 7 each with the axially outermost part 47 of their cutting edge 42 facing the end face 3 in
  • the circumferential direction is offset with the radially outermost part of the cutting edge 22 of the knife 5, ie that when milling, the surface machined by knife 5 merges seamlessly into the surface machined by knife 7.
  • the outermost part 57 of the cutting edge 52 of the knife 8 facing the end face 4 is offset in the circumferential direction with the radially outermost part of the cutting edge 32 of the knife 6.
  • the knives 7, 8 also have an axis angle (not shown), so that they have a pulling angle Cut cut.
  • the knife 5 is positioned against the bottom of the groove 20 and secured by a screw 23 against displacement outwards under the action of centrifugal force.
  • the wedge 21 engages with pins 24 in bores 25 of the knife 5 which rest radially on the outside against the bores 25 and thus also secure the wedge 21 against displacement under the action of the centrifugal force.
  • the wedge 21 is clamped against the knife 25 by Allen stud screws 26.
  • the knife 6 is positioned in the groove 30, secured by a screw 33, and the wedge 31 is tightened by stud bolts.
  • the wedge 31 also engages with pins in bores 35 of the knife 6.
  • the knife 7 is also positioned by a stop at the bottom of the groove 40.
  • the wedge 41 engages with a pin 44 in a form-fit manner in a bore 45 of the knife 7.
  • a stud screw 46 with a flat end face clamps the wedge 41 against the knife 7.
  • the wedge action between the end face of the screw 46 and the knife surface secures the wedge 41 and thus also the knife 7 against the action of the centrifugal force.
  • a screw 43 serves as a stop in the axial direction.
  • Knife 8 positioned in the base of the groove 50 and by a stop against a screw 53 and braced by means of a stud screw acting on the wedge 51.
  • the knife 5 has a kinked cutting edge 22, the knife 6, on the other hand, has an S-shaped curved cutting edge 32.
  • the cutting edges 42, 52 of the knives 7 and 8 have a stepped outline.
  • the axially outermost part 47, 57 of the cutting edges 42, 52 is aligned with the radially outermost part of the cutting edges 22 and 32, respectively.
  • the illustrated design of the tool allows the workpiece to be machined either with the top or the bottom of the tool when the tool is firmly clamped and rotating about a vertical axis, the workpiece being pushed through above or below the tool.
  • the different types of knives allow several different profile shapes to be produced per side, depending on the depth of cut, four profile shapes per side in the example shown.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling Processes (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Drilling Tools (AREA)

Abstract

1. A wood milling cutter comprising a disc-shaped carrier (1) having replaceably mounted thereon, by means of screws (26, 46), cutters (5, 6, 7, 8) presenting cutting edges (22, 32, 42, 47, 52, 57) on the first and second face sides (3, 4) and on the circumference (9) of the carrier (1), in which, on the first face side (3), the radially outer part of the cutting edge (22) of at least one first cutter (5) located on the face side is aligned with the axially outermost part (47) of the cutting edge (42) of at least one second cutter (7) located on the circumference and offset in circumferential direction, characterized in that, on the second face side (4) too, the radially outer part of the cutting edge (32) of at least one third cutter (6) located on the face side is aligned with the axially outermost part (57) of the cutting edge (52) of at least one fourth cutter (8) located on the circumference and offset in circumferential direction, that all cutters (5, 6, 7, 8) are clamped in the carrier (1) by means of a clamping wedge (21, 31, 41, 51) each, which has a pin (24, 44) engaging in a bore (25, 35, 45, 55) of said cutter (5, 6, 7, 8) ; and that the second and fourth cutters (7, 8) each have a stepped outline such that a plurality of different profile configurations can be produced depending on the cutting depth.

Description

Holzfräswerkzeuge gemäss Oberbegriff des Anspruchs 1 sind durch Vorbenutzung bekannt. Diese Werkzeuge sind relativ beschränkt in ihrer Anwendung. Die Aufgabe der vorliegenden Neuerung besteht darin, ein Werkzeug gemäss Oberbegriff des Anspruchs 1 derart weiterzubilden, dass es vielseitig anwendbar ist. Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.Wood milling tools according to the preamble of claim 1 are known from prior use. These tools are relatively limited in their application. The object of the present innovation is to develop a tool according to the preamble of claim 1 in such a way that it can be used in many ways. This object is achieved by the characterizing features of claim 1.

Nachfolgend wird ein Ausführungsbeispiel der Neuerung anhand der Zeichnung erläutert. Darin zeigt:

  • Fig. 1 eine axiale Ansicht des Werkzeugs,
  • Fig. 2 einen Schnitt längs der Linie II - 11 in Fig. 1,
  • Fig. 3 eine vergrösserte Darstellung des Bereichs III in Fig. 1 im Schnitt, und
  • Fig. 4 bis Fig. 7 die Grundrisse der vier verwendeten Messer.
An exemplary embodiment of the innovation is explained below with reference to the drawing. It shows:
  • 1 is an axial view of the tool,
  • 2 shows a section along the line II-11 in FIG. 1,
  • Fig. 3 is an enlarged view of the area III in Fig. 1 in section, and
  • Fig. 4 to Fig. 7, the floor plans of the four knives used.

Das dargestellte Holzfräswerkzeug umfasst einen scheibenförmigen Träger 1 mit einer zentralen Bohrung 2 zum Aufspannen auf den Dorn einer Werkzeugmaschine. In der einen Stirnseite 3 des Trägers 1 sind zwei Nuten 20 zur Aufnahme je eines Wendemessers 5 und eines Spannkeils 21 versetzt zur radialen Richtung eingefräst, so dass das Messer 5 mit einem ziehenden Schnitt schneidet. In der gegenüberliegenden Stirnseite 4 sind zwei weitere Nuten 30 für je ein weiteres Wendemesser 6 mit Spannkeil 31 um 90° gegenüber den Nuten 20 versetzt eingefräst. An der Umfangsfläche 9 des Trägers 1 sind vier weitere Nuten 40, 50 eingefräst zur Aufnahme von vier weiteren Messern 7, 8 mit Spannkeilen 41, 51, wobei je zwei Messer 7 mit dem axial äussersten, der Stirnfläche 3 zugewandten Teil 47 ihrer Schnittkante 42 in Umfangsrichtung versetzt mit dem radial äussersten Teil der Schnittkante 22 des Messers 5 fluchten, d.h. dass beim Fräsen die durch das Messer 5 bearbeitete Fläche nahtlos in die vom Messer 7 bearbeitete Fläche übergeht. Ebenso fluchtet der der Stirnfläche 4 zugewandte äusserste Teil 57 der Schnittkante 52 des Messers 8 in Umfangsrichtung versetze mit dem radial äussersten Teil der Schnittkante 32 des Messers 6. DLe Messer 7, 8 weisen ebenfalls einen nicht dargestellten Achswinkel auf, so dass sie mit einem ziehenden Schnitt schneiden.The wood milling tool shown comprises a disk-shaped carrier 1 with a central bore 2 for clamping onto the mandrel of a machine tool. In one end face 3 of the carrier 1, two grooves 20 for receiving a reversible knife 5 and a clamping wedge 21 are milled offset to the radial direction, so that the knife 5 cuts with a pulling cut. In the opposite end face 4, two further grooves 30 are milled, offset by 90 ° with respect to the grooves 20, for each additional turning knife 6 with a clamping wedge 31. Four additional grooves 40, 50 are milled on the peripheral surface 9 of the carrier 1 to receive four further knives 7, 8 with clamping wedges 41, 51, two knives 7 each with the axially outermost part 47 of their cutting edge 42 facing the end face 3 in The circumferential direction is offset with the radially outermost part of the cutting edge 22 of the knife 5, ie that when milling, the surface machined by knife 5 merges seamlessly into the surface machined by knife 7. Likewise, the outermost part 57 of the cutting edge 52 of the knife 8 facing the end face 4 is offset in the circumferential direction with the radially outermost part of the cutting edge 32 of the knife 6. The knives 7, 8 also have an axis angle (not shown), so that they have a pulling angle Cut cut.

Durch die Trennung der ein gemeinsames Profil schneidenden Messer 5 und 7 bzw. 6 und 8 wird ermöglicht, dass sowohl Achswinkel ϑ als auch Spanwinkel r für beide Messer optimal gewählt werden können, also eine gute Zerspanung und Werkstückoberfläche erzielt werden.The separation of the common knives 5 and 7 or 6 and 8 enables both Axis angle ϑ and rake angle r can be optimally selected for both knives, i.e. good machining and workpiece surface can be achieved.

Das Messer 5 wird durch Anlage am Grund der Nut 20 positioniert und durch eine Schraube 23 gegen ein Verschieben nach aussen unter der Wirkung der Fliehkraft gesichert. Der Keil 21 greift mit Stiften 24 in Bohrungen 25 des Messers 5 ein, welche radial aussen an den Bohrungen 25 anliegen und damit den Keil 21 ebenfalls gegen ein Verschieben unter der Wirkung der Fliehkraft sichern. Der Keil 21 wird durch Inbus-Stiftschrauben 26 gegen das Messer 25 gespannt. In analoger Weise wird das Messer 6 in der Nut 30 positioniert, durch eine Schraube 33 gesichert, und der Keil 31 durch Stiftschrauben gespannt. Der Keil 31 greift ebenfalls mit Stiften in Bohrungen 35 des Messers 6 ein.The knife 5 is positioned against the bottom of the groove 20 and secured by a screw 23 against displacement outwards under the action of centrifugal force. The wedge 21 engages with pins 24 in bores 25 of the knife 5 which rest radially on the outside against the bores 25 and thus also secure the wedge 21 against displacement under the action of the centrifugal force. The wedge 21 is clamped against the knife 25 by Allen stud screws 26. In an analogous manner, the knife 6 is positioned in the groove 30, secured by a screw 33, and the wedge 31 is tightened by stud bolts. The wedge 31 also engages with pins in bores 35 of the knife 6.

Das Messer 7 ist ebenfalls durch Anschlag am Grund der Nut 40 positioniert. Hier greift der Keil 41 mit einem Stift 44 formschlüssig in eine Bohrung 45 des Messers 7 ein. Eine Stiftschraube 46 mit ebener Stirnfläche spannt den Keil 41 gegen das Messer 7. Durch die Keilwirkung zwischen der Stirnfläche der Schraube 46 und der Messerfläche ist der Keil 41 und damit auch das Messer 7 gegen die Wirkung der Fliehkraft gesichert. Eine Schraube 43 dient als Anschlag in Achsrichtung. In gleicher Weise ist auch das Messer 8 im Grund der Nut 50 und durch Anschlag an eine Schraube 53 positioniert und mittels einer auf den Keil 51 wirkenden Stiftschraube verspannt.The knife 7 is also positioned by a stop at the bottom of the groove 40. Here the wedge 41 engages with a pin 44 in a form-fit manner in a bore 45 of the knife 7. A stud screw 46 with a flat end face clamps the wedge 41 against the knife 7. The wedge action between the end face of the screw 46 and the knife surface secures the wedge 41 and thus also the knife 7 against the action of the centrifugal force. A screw 43 serves as a stop in the axial direction. In the same way it is Knife 8 positioned in the base of the groove 50 and by a stop against a screw 53 and braced by means of a stud screw acting on the wedge 51.

Das Messer 5 hat eine abgeknickte Schnittkante 22, das Messer 6 hingegen eine S-förmig geschwungene Schnittkante 32. Die Schnittkanten 42, 52 der Messer 7 und 8 haben einen abgestuften Umriss. Dabei ist jeweils der axial äusserste Teil 47, 57 der Schnittkanten 42, 52 auf den radial äussersten Teil der Schnittkanten 22 bzw. 32 ausgerichtet.The knife 5 has a kinked cutting edge 22, the knife 6, on the other hand, has an S-shaped curved cutting edge 32. The cutting edges 42, 52 of the knives 7 and 8 have a stepped outline. The axially outermost part 47, 57 of the cutting edges 42, 52 is aligned with the radially outermost part of the cutting edges 22 and 32, respectively.

Durch die dargestellte Ausbildung des Werkzeuges kann bei fest eingespanntem, um eine vertikale Achse rotierendem Werkzeug das Werkstück entweder mit der Oberseite oder der Unterseite des Werkzeugs bearbeitet werden, wobei das Werkstück oberhalb oder unterhalb des Werkzeugs durchgeschoben wird. Durch die verschiedenartigen Messer lassen sich dabei je nach Schnittiefe pro Seite mehrere unterschiedliche Profilformen herstellen, im dargestellten Beispiel vier Profilformen pro Seite.The illustrated design of the tool allows the workpiece to be machined either with the top or the bottom of the tool when the tool is firmly clamped and rotating about a vertical axis, the workpiece being pushed through above or below the tool. The different types of knives allow several different profile shapes to be produced per side, depending on the depth of cut, four profile shapes per side in the example shown.

Claims (8)

1. Holzfräswerkzeug mit einem scheibenförmigen Träger (1), der an seiner ersten Stirnseite (3) mit mindestens einem ersten Messer (5) und an seinem Umfang (9) mit einem zweiten Messer (7) bestückt ist, wobei der radial äussere Teil der Schnittkante (22) des ersten Messers (5) in Umfangsrichtung versetzt mit dem axial äussersten Teil (47) der Schnittkante (42) des zweiten Messers (7) fluchtet, dadurch gekennzeichnet, dass auf der zweiten Stirnseite (4) des Trägers (1) mindestens ein drittes Messer (6) und am Umfang (9) mindestens ein viertes Messer (8) angeordnet sind, wobei der radial äusserste Teil der Schnittkante (32) des dritten Messers (6) in Umfangsrichtung versetzt mit dem axial äussersten Teil (57) der Schnittkante (52) des vierten Messers (8) fluchtet..1. Wood milling tool with a disk-shaped carrier (1), which is equipped on its first end face (3) with at least one first knife (5) and on its circumference (9) with a second knife (7), the radially outer part of the Cut edge (22) of the first knife (5) offset in the circumferential direction with the axially outermost part (47) of the cut edge (42) of the second knife (7), characterized in that on the second end face (4) of the carrier (1) at least one third knife (6) and at least one fourth knife (8) are arranged on the circumference (9), the radially outermost part of the cutting edge (32) of the third knife (6) being offset circumferentially with the axially outermost part (57) the cutting edge (52) of the fourth knife (8) is aligned .. 2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass alle Messer (5-8) für einen ziehenden Schnitt ausgerichtet sind.2. Tool according to claim 1, characterized in that all knives (5-8) are aligned for a pulling cut. 3. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass alle Messer (5-8) für die gleiche Drehrichtung des Trägers (1) angeordnet sind.3. Tool according to claim 1 or 2, characterized in that all knives (5-8) for the same direction of rotation of the carrier (1) are arranged. 4. Werkzeug nach den Ansprüchen 2 und 3, dadurch gekennzeichnet, dass die den Spanwinkel (δ) des ersten Messers (5) bildende Fläche in Umfangsrichtung versetzt axial symmetrisch zu der den Spanwinkel des dritten Messers (6) bildenäen Fläche ist.4. Tool according to claims 2 and 3, characterized in that the surface forming the rake angle (δ) of the first knife (5) is offset in the circumferential direction axially symmetrical to the surface forming the rake angle of the third knife (6). 5. Werkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das erste und dritte Messer (5,6) je ein Wendemesser ist.5. Tool according to one of claims 1 to 4, characterized in that the first and third knives (5, 6) are each a reversible knife. 6. Werkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das zweite und vierte Messer (7,8) je ein Einwegmesser ist.6. Tool according to one of claims 1 to 5, characterized in that the second and fourth knives (7, 8) are each disposable knives. 7. Werkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der radial äussere Rand des ersten und dritten Messers (5,6) je gegen einen Anschlag (23,33) anliegt.7. Tool according to one of claims 1 to 6, characterized in that the radially outer edge of the first and third knives (5, 6) each abuts against a stop (23, 33). 8. Werkzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Schnittkanten (42,52) des zweiten und vierten Messers (7,8) je einen abgestuften Umriss aufweisen.8. Tool according to one of claims 1 to 7, characterized in that the cut edges (42, 52) of the second and fourth knives (7, 8) each have a stepped outline.
EP86106504A 1985-05-13 1986-05-13 Wood-milling cutter Expired - Lifetime EP0205884B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86106504T ATE53786T1 (en) 1985-05-13 1986-05-13 WOOD MILLING TOOL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8514057U 1985-05-13
DE8514057U DE8514057U1 (en) 1985-05-13 1985-05-13 Wood milling tool

Publications (2)

Publication Number Publication Date
EP0205884A1 true EP0205884A1 (en) 1986-12-30
EP0205884B1 EP0205884B1 (en) 1990-05-02

Family

ID=6781034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106504A Expired - Lifetime EP0205884B1 (en) 1985-05-13 1986-05-13 Wood-milling cutter

Country Status (3)

Country Link
EP (1) EP0205884B1 (en)
AT (1) ATE53786T1 (en)
DE (2) DE8514057U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994001258A1 (en) * 1992-07-06 1994-01-20 Josef Sperl Milling cutter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH58468A (en) * 1911-12-29 1913-03-17 Lennartz Geb Milling cutter
DE830409C (en) * 1950-10-21 1952-02-04 Boettcher & Gessner Process for processing longer tenons in transverse wood

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH58468A (en) * 1911-12-29 1913-03-17 Lennartz Geb Milling cutter
DE830409C (en) * 1950-10-21 1952-02-04 Boettcher & Gessner Process for processing longer tenons in transverse wood

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994001258A1 (en) * 1992-07-06 1994-01-20 Josef Sperl Milling cutter

Also Published As

Publication number Publication date
DE8514057U1 (en) 1985-06-20
DE3670787D1 (en) 1990-06-07
ATE53786T1 (en) 1990-06-15
EP0205884B1 (en) 1990-05-02

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