EP0984850B1 - Outil coupant, notamment tete de fer de rabot ou bien arbre de fer de rabot - Google Patents

Outil coupant, notamment tete de fer de rabot ou bien arbre de fer de rabot Download PDF

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Publication number
EP0984850B1
EP0984850B1 EP99924694A EP99924694A EP0984850B1 EP 0984850 B1 EP0984850 B1 EP 0984850B1 EP 99924694 A EP99924694 A EP 99924694A EP 99924694 A EP99924694 A EP 99924694A EP 0984850 B1 EP0984850 B1 EP 0984850B1
Authority
EP
European Patent Office
Prior art keywords
clamping jaw
cutting tool
tool according
cutter
knife
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.)
Expired - Lifetime
Application number
EP99924694A
Other languages
German (de)
English (en)
Other versions
EP0984850A2 (fr
Inventor
Karl-Heinz Kellner
Dieter Stein
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.)
Leitz GmbH and Co KG
Original Assignee
Leitz GmbH and Co KG
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 Leitz GmbH and Co KG filed Critical Leitz GmbH and Co KG
Publication of EP0984850A2 publication Critical patent/EP0984850A2/fr
Application granted granted Critical
Publication of EP0984850B1 publication Critical patent/EP0984850B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9464—For rotary tool

Definitions

  • the invention relates to a cutting tool, in particular a planer knife head or a planer knife shaft, with a support body having at least one radially outwardly open receptacle, a wedge-shaped clamping jaw arranged in the receptacle and a knife which can be clamped in its seat by means of the clamping jaw, the clamping jaw for positioning the knife is biased by a compression spring and can be displaced radially inward against the force of the compression spring to remove the knife of the clamping jaws, the clamping jaw being lockable in its radially inner position.
  • Such a cutting tool is known for example from EP 0 428 996 B1.
  • a recess is made in the receptacle in the support body on the side opposite the knife seat, into which the clamping jaw can snap with a projection provided on it.
  • the clamping jaw When changing the knife, the clamping jaw must be pressed radially inwards and slightly tilted in its inner position so that the projection in the clamping jaw engages in the recess in the supporting body and the clamping jaw can thus be locked.
  • a knife shaft is known from DE-AS 11 95 934.
  • the knife is screwed to a knife holder which can be positively fixed in a recess in the support body.
  • the knife holder is loaded from the rear by the spring-loaded jaws, which positions the knife on its flight circle. If the knife shaft is set in rotation, the clamping jaw moves radially outwards as a result of the centrifugal force acting on it and clamps the knife firmly over the knife holder.
  • the operator must press the clamping jaw radially inward against the force of the spring and hold it in this position until the knife holder can be released from the positive connection and removed together with the knife. Then the jaws must be released slowly so that it is pushed radially outwards by the compression spring.
  • Similar cutting tools are also known from German Utility Model No. 72 34 252 and DE 25 59 406 A1.
  • the knife is positively connected via a tongue and groove connection to a knife holder, which protrudes into the groove-shaped receptacle and engages the spring-loaded clamping jaws against the rear thereof.
  • the knife holder is also loaded by a compression spring.
  • the knife is positioned by the pre-tensioned knife holder and the pre-tensioned jaws. If the knife shaft is set in rotation, the clamping jaw moves radially outwards in the holder due to the centrifugal force acting on it and clamps the knife over the knife holder.
  • the clamping jaw To remove the knife, the clamping jaw must be pushed back radially inward against the spring force until its locking with the knife holder is released, whereby the knife holder with the knife is then pushed further radially outwards by the compression spring acting on it, and then the knife from the knife holder can be removed. If the clamping jaw is relieved, it springs back in the holder and strikes against the knife holder in the removal position. If the new knife is to be brought into position, the knife holder must be pressed back not only against the force of its compression spring, but also against the frictional force acting on it from the clamping jaw. If the frictional force is too high, the clamping jaw must be pressed radially inward again and held there until the knife holder has been brought into its position, which sometimes makes the cutting tool very difficult to handle.
  • the cutting tool described at the outset is to be improved so that the locking of the clamping jaw in its radially inner position is facilitated for changing the knife.
  • the generic cutting tool is characterized in that a spring-loaded bolt is provided for the automatic locking of the clamping jaw, which engages in a recess provided in the clamping jaw.
  • the bolt is preferably arranged in a substantially tangential direction in the support body and is guided in a bore in the support body opening into the receptacle. If the clamping jaw is pressed far enough into the receptacle, the bolt snaps into the recess, which is preferably embodied as a through-hole, thereby securely fixing and locking the clamping jaw.
  • a through-hole aligned with the through-hole of the clamping jaw and opening into the receptacle is preferably provided in the support body.
  • a tool (mandrel) can then be inserted into this through hole and the bolt pressed back into its guide hole.
  • the jaw then springs back a little and locks the bolt in its guide hole. After pulling out the tool, the clamping jaw springs further radially outwards and then positions the knife.
  • the clamping jaw is symmetrical in cross section, it is effectively prevented that it can be accidentally inserted into the receptacle the wrong way round, which increases the safety when operating the cutting tool.
  • a knife holder is preferably arranged between the clamping jaw and the knife and is particularly preferably pivotably mounted in the receptacle.
  • the knife holder then swivels back in the radially inner position of the clamping jaw, which simplifies the removal of the knife. At the same time, inserting a new knife is easier. If the jaws spring back, the knife holder swivels against the knife and this is positioned. In order to set an exact positioning, the knife can be positively connected to the knife holder via a tongue and groove connection.
  • the knife holder is from one to the bottom prestressing the compression spring biased so that it presses the knife holder after loosening the jaw radially outward until the knife holder is pressed radially outward against a stop provided in the receptacle.
  • the diameter of the knife circle is set exactly.
  • the knife holder is pretensioned via a bolt which has a radially outwardly projecting shoulder against which the clamping jaw strikes, and when this is locked, pushes the bolt radially inward so far that the knife holder is free of force.
  • At least one screw which can be axially screwed into the supporting body can be provided for axially securing the knife. This design prevents the knife from falling axially out of the knife shaft when cutting tools that are inserted vertically into the machine.
  • a sleeve For axially securing the knife holder, a sleeve can be inserted into the through hole in the support body, which engages with its end facing the receptacle in a recess in the knife holder. The knife holder is thereby securely fixed in the axial direction.
  • the end of the knife shaft is provided with two axial pins 2, 2 ', by means of which it is rotatably mounted in a machine (not shown here). It consists of the support body 1 and, for example, four receptacles 3 distributed regularly over the circumference.
  • the receptacles 3 are groove-shaped cutouts in the support body 1 and in each of them is the clamping jaws 4 loaded by the compression spring 13, the knife holder 5 loaded by the compression spring 16 and the Knife 6 arranged, the jaws 4 and knife holder 5 are in the direction of rotation in front of the knife 6.
  • Clamping jaws 4, knife holder 5 and knife 6 are designed as elongated components.
  • the knife holder 5 On its radially inner side, the knife holder 5 is provided with a projection 5a which extends at a right angle and which engages in an undercut 4a provided in the receptacle 3. In the area of its radially outer end, the knife holder 5 is provided with a groove 18 running over its full length, into which a projection / spring 17, which also runs over the full length and is provided on the front of the knife 6, engages. The back of the knife 6 is flat and lies against the support body 1.
  • a through hole 22 is provided which extends essentially in the tangential direction.
  • a bore 10 is made in the supporting body 1, which opens into the lower region of the receptacle 3.
  • a bolt 7 is guided by one Compression spring 9 is loaded.
  • a through bore 11 is made in the support body 1, which is aligned with the bore 10.
  • the knife holder 5 is provided with a recess 5b which is open radially inwards (FIG. 4).
  • the clamping jaw 4 If the clamping jaw 4 is pressed radially inward, for example with a tool 19, against the force of the spring 13, which is supported on the base of the receptacle 3 or in a recess or bore 12 extending further radially inward from there, the through bore 22 reaches in line with the bore 10, so that the bolt 7 snaps with its spherical head 8 into the bore 22 and locks the jaws 4 in its radially inner position.
  • the clamping jaw 4 presses on the shoulder 15 of the hollow bolt 14 and also presses it radially inward against the force of the compression spring 16, so that the knife holder 5 is relieved and pivoted.
  • the knife 6 can be removed axially or radially in this position shown in FIGS. 4 to 6 (cf. FIG. 11).
  • the locking of the clamping jaw 4 must be released.
  • a tool 20 is inserted into the bore 11 and with this the bolt 7 is pushed into the guide bore 10 against the force of the spring 9.
  • the axis of the through-bore 22 in the clamping jaw 4 does not run parallel to the axes of the bores 10 and 11. If the head 8 of the bolt 7 is out of engagement with the bore 22, the clamping jaws 4 become so via the tool 20 pivoted far that the axis of the through hole 22 runs parallel to the axis of the through hole 11, whereby the head 8 of the bolt 7 is blocked in its end position over the clamping jaws 4 and runs against it.
  • the clamping jaw 4 After removal of the tool 20, the clamping jaw 4 is pushed radially outward via the compression spring 13. At the same time, the bolt 14 pushes the knife holder 5 out so far that the shoulder 5a comes into contact in the undercut 1a (FIG. 10) and thus a defined one Stop is formed so that when pivoting the knife holder 5, the tongue and groove connection 17, 18 between knife 6 and knife holder 5 is set and the knife 6 is positioned in its flight circle diameter. When the cutting tool starts up, the centrifugal force acting on the clamping jaws 4 pulls it further radially outward and clamps the knife 6 and the knife holder plate 5.
  • a sleeve 23 is inserted into the through hole 11 and engages in the downwardly open recess 5b of the knife holder 5.
  • a groove 24 opening into the through bore 22 is provided, into which the bolt 7 engages with its head 8 (cf. FIG. 8).
  • the cutting tool can be installed both horizontally and vertically.
  • screws 21 can be screwed axially on both sides of the knife into the support body 1, which form a stop for the knife 6 and the knife holder 5 (FIG. 13).

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Details Of Cutting Devices (AREA)
  • Gripping On Spindles (AREA)

Claims (15)

  1. Outil coupant, notamment tête de fer de rabot ou bien arbre de fer de rabot, comprenant un corps porteur (1) présentant au moins un logement (3) ouvert radialement vers l'extérieur, un mors de serrage (4) en forme de coin agencé dans le logement (3), et une lame (6) pouvant être serrée dans un siège au moyen du mors de serrage (4), outil dans lequel le mors de serrage (4) est pré-contraint par un ressort presseur (13) pour le positionnement de la lame (6) et peut être déplacé radialement vers l'intérieur à l'encontre de la force du ressort presseur (13) pour l'extraction de la lame (6), et le mors de serrage (4) peut être immobilisé dans sa position radialement intérieure, caractérisé en ce que pour l'immobilisation automatique du mors de serrage (4) il est prévu un verrou (7) chargé par ressort, verrou qui s'engage dans un évidement (22) prévu dans le mors de serrage (4).
  2. Outil coupant selon la revendication 1, caractérisé en ce que le verrou (7) est agencé en direction sensiblement tangentielle dans le corps porteur (1).
  3. Outil coupant selon la revendication 1, caractérisé en ce que le verrou (7) est guidé dans un alésage (10) prévu dans le corps porteur (1), débouchant dans logement (3).
  4. Outil coupant selon la revendication 1, caractérisé en ce que l'évidement (22) est un alésage traversant.
  5. Outil coupant selon l'une des revendications 1 à 4, caractérisé en ce que le verrou (7) présente une tête (8) en forme de bille.
  6. Outil coupant selon la revendication 4, caractérisé en ce que pour défaire l'immobilisation, il est prévu dans le corps porteur (1) un alésage traversant (11) aligné avec l'alésage de guidage (10) et débouchant dans le logement (3), et par lequel on peut introduire un outil (20) agissant sur le verrou (7).
  7. Outil coupant selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le mors de serrage (4) est réalisé symétrique en coupe transversale.
  8. Outil coupant selon la revendication 1, caractérisé en ce qu'un guide-lame (5) est agencé entre la mors de serrage (4) et la lame (6).
  9. Outil coupant selon la revendication 8, caractérisé en ce que le guide-lame (5) est supporté pivotant dans le logement (3).
  10. Outil coupant selon la revendication 8, caractérisé en ce que le guide-lame (5) est pré-contraint par un ressort presseur (16).
  11. Outil coupant selon la revendication 8, caractérisé en ce que la lame (6) peut être reliée par conformations inter-engagées avec le guide-lame (5) par l'intermédiaire d'une liaison à tenon et mortaise (17,18).
  12. Outil coupant selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que pour le positionnement axial de la lame (6) il est prévu au moins une vis (21) pouvant être vissée axialement dans le corps porteur (1).
  13. Outil coupant selon la revendication 7 ou 8, caractérisé en ce qu'un manchon (23) peut être enfilé dans l'alésage traversant (11) et s'engage par son extrémité tournée vers le logement (3) dans un évidement (5b) ménagé dans le guide-lame (5) pour le positionnement axial du guide-lame (5).
  14. Outil coupant selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu dans le mors de serrage (4) une rainure (24) débouchant dans l'évidement (22), et dans laquelle s'engage le verrou (7) pour le positionnement axial du mors de serrage (4).
  15. Outil coupant selon la revendication 10, caractérisé en ce que la pré-contrainte du guide-lame (5) est transmissible par un poussoir (14) logeant le ressort presseur (16) et comportant un appendice (15) saillant en direction du mors de serrage (4), et le mors de serrage (4), lorsqu'il est dans sa position radialement intérieure, agit sur cet appendice de telle manière que le guide-lame (5) est déchargé de la force du ressort (16).
EP99924694A 1998-03-25 1999-03-25 Outil coupant, notamment tete de fer de rabot ou bien arbre de fer de rabot Expired - Lifetime EP0984850B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19813084A DE19813084C1 (de) 1998-03-25 1998-03-25 Schneidwerkzeug, insbesondere Hobelmesserkopf oder Hobelmesserwelle
DE19813084 1998-03-25
PCT/DE1999/000919 WO1999048655A2 (fr) 1998-03-25 1999-03-25 Outil coupant, notamment tete de fer de rabot ou bien arbre de fer de rabot

Publications (2)

Publication Number Publication Date
EP0984850A2 EP0984850A2 (fr) 2000-03-15
EP0984850B1 true EP0984850B1 (fr) 2003-01-29

Family

ID=7862241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99924694A Expired - Lifetime EP0984850B1 (fr) 1998-03-25 1999-03-25 Outil coupant, notamment tete de fer de rabot ou bien arbre de fer de rabot

Country Status (6)

Country Link
US (1) US6279444B1 (fr)
EP (1) EP0984850B1 (fr)
AT (1) ATE231775T1 (fr)
BR (1) BR9904884A (fr)
DE (2) DE19813084C1 (fr)
WO (1) WO1999048655A2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7007580B2 (en) * 2002-04-11 2006-03-07 Goss International Americas, Inc. Apparatus for removably securing a cutting component
PT103245A (pt) * 2005-03-14 2005-09-30 Abreu Alfredo Ferreira De Arvore de corte com sistema de substituicao rapida das laminas
US7517178B2 (en) * 2005-04-01 2009-04-14 Great Lakes Custom Tool Mfg., Inc. Rotary cutter head
US7735531B2 (en) * 2006-08-10 2010-06-15 Les Produits Gilbert Inc. Planing head for a planing machine and method of manufacture thereof
US9050213B2 (en) 2012-03-30 2015-06-09 The Procter & Gamble Company Apparatuses and methods for making absorbent articles
US8440043B1 (en) 2012-03-30 2013-05-14 The Procter & Gamble Company Absorbent article process and apparatus for intermittently deactivating elastics in elastic laminates
US9028632B2 (en) 2012-03-30 2015-05-12 The Procter & Gamble Company Apparatuses and methods for making absorbent articles
US9039855B2 (en) 2012-03-30 2015-05-26 The Procter & Gamble Company Apparatuses and methods for making absorbent articles
US20130255861A1 (en) 2012-03-30 2013-10-03 Uwe Schneider Apparatuses and Methods for Making Absorbent Articles
CH709488A1 (de) * 2014-04-14 2015-10-15 Oertli Werkzeuge Ag Werkzeugkopf und Verfahren zum Einsetzen und Spannen einer Schneidplatte, sowie Schneidplatte.
DE202014003962U1 (de) * 2014-05-13 2014-06-11 Robert Bosch Gmbh Werkzeug
US9802334B2 (en) 2014-07-10 2017-10-31 Kimwood Corporation Cutter head assembly for a knife planer
DE102014015199A1 (de) * 2014-10-10 2016-04-14 Leitz Gmbh & Co. Kg Messerkopf zur spanenden Bearbeitung von Werkstoffen und Messer hierfür

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DE2559406A1 (de) * 1972-03-24 1977-03-31 Schaefer Karl A R Einwegmesser fuer holzzerspanungsmaschinen
DE7234252U (de) * 1972-09-16 1973-07-26 Hombak Maschinenfabrik Kg Messerwelle fuer holzzerspanungsmaschinen
IT1032275B (it) * 1974-03-13 1979-05-30 Maier Kg Maschf B Albero portacoltelli per dispositivi truciolatori
CA1040072A (fr) * 1975-07-14 1978-10-10 Arnold Schmidt Arbre porte-outil pour machine a bois
US4604931A (en) * 1985-08-16 1986-08-12 Harris Graphics Corporation Quick change rotary punch
US4848202A (en) * 1987-10-29 1989-07-18 The Hamilton Tool Company Cut off or cross perforator or scoring cylinder with quick blade release
ATE140419T1 (de) * 1989-11-17 1996-08-15 Peter Frey Consulting Fliehkraftbetätigte schnellspannvorrichtung für hobelmesser
US5086683A (en) * 1990-12-13 1992-02-11 Tamarack Products, Inc. Apparatus for cutting and method
US5224408A (en) * 1990-12-13 1993-07-06 Tamarack Products, Inc. Apparatus for cutting
ES2051250A6 (es) * 1991-03-26 1994-06-01 Rojas Manuel Jimenez Mejoras en el objeto de la patente principal n{ 9100972 por:"dispositivo de sujecion de flejes en cilindros de perforacion y corte para maquinaria de artes graficas.
SE469940B (sv) * 1992-01-14 1993-10-11 Rolf Arne Larsson Anordning för fasthållning av knivblad i en cylinder avsedd för bearbetning av en löpande bana
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US5740714A (en) * 1994-10-25 1998-04-21 Martin; Mark S. Rotary blade clamping assembly
US5875699A (en) * 1997-01-16 1999-03-02 Dynamic Dies, Inc. Cutting die mounting system

Also Published As

Publication number Publication date
BR9904884A (pt) 2000-12-19
WO1999048655A3 (fr) 1999-10-28
EP0984850A2 (fr) 2000-03-15
WO1999048655A2 (fr) 1999-09-30
DE59904141D1 (de) 2003-03-06
DE19813084C1 (de) 1998-12-24
ATE231775T1 (de) 2003-02-15
US6279444B1 (en) 2001-08-28

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