EP0065652A2 - Porte-couteau dans un arbre de coupe pour une déchiqueteuse à bois - Google Patents

Porte-couteau dans un arbre de coupe pour une déchiqueteuse à bois Download PDF

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Publication number
EP0065652A2
EP0065652A2 EP82103445A EP82103445A EP0065652A2 EP 0065652 A2 EP0065652 A2 EP 0065652A2 EP 82103445 A EP82103445 A EP 82103445A EP 82103445 A EP82103445 A EP 82103445A EP 0065652 A2 EP0065652 A2 EP 0065652A2
Authority
EP
European Patent Office
Prior art keywords
knife
cutting
cutting knife
wear
strip
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.)
Withdrawn
Application number
EP82103445A
Other languages
German (de)
English (en)
Other versions
EP0065652A3 (fr
Inventor
Dieter Kratzberger
Harro Kröcher
Arnold Schmidt
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.)
HOMBAK MASCHINENFABRIK GmbH U CO KG
Original Assignee
HOMBAK MASCHINENFABRIK GmbH U 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 HOMBAK MASCHINENFABRIK GmbH U CO KG filed Critical HOMBAK MASCHINENFABRIK GmbH U CO KG
Publication of EP0065652A2 publication Critical patent/EP0065652A2/fr
Publication of EP0065652A3 publication Critical patent/EP0065652A3/fr
Withdrawn legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/005—Tools therefor
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • Y10T407/1928—Tool adjustable relative to holder
    • Y10T407/193—Radially
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • Y10T407/1934—Rotary cutting tool including holder [i.e., head] having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/1938—Wedge clamp element
    • Y10T407/194—Resilient clamp jaw
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2268—Cutters, for shaping including holder having seat for inserted tool with chip breaker, guide or deflector

Definitions

  • the invention relates to a knife holder for the installation of regrindable cutting knives in the knife shaft of a wood-cutting machine, consisting of a knife holder, which has a web that extends over most of the length of the cutting knife and is narrow in relation to the cutting knife height, on which holding tabs sit over a T eiliere of the cutting blade extending and have elongated holes, extend through the clamping screws, with which the knife carrier is slidably and fixably approximately at the back of the cutting knife in the radial direction, firmly arranged from a in the knife shaft body, the cutting blade supernatant determined stop surface on which the knife carrier rests loosely, from a wear bar, which is fixed in the knife shaft body via an approximately positive locking in the radial direction, against which the cutting knife is supported with its back and from a bottle pressing the cutting knife against the wear bar ieh wedge.
  • the knife is therefore held in a force-locking manner only.
  • the knife clamp bar which is positively fixed in the knife shaft body, is provided between the centrifugal wedge and the knife face.
  • the stop surface supporting the knife carrier consists of a holding strip screwed to the knife shaft body, which, seen in the radial direction, lies below the cutting knife and the knife carrier.
  • the peripheral recess to be provided in the knife shaft for receiving the knife holder must therefore be formed deeper than the knife width in order to be able to additionally accommodate the holding strip mentioned.
  • the invention has for its object to simplify the design of the knife holder explained above.
  • the positive connection provided for the knife terminal block in the known embodiment is formed in the knife holder according to the invention behind the knife back between the knife carrier and wear strip.
  • the knife holder and thus also the knife screwed to it are thus held directly in a form-fitting manner in the wear strip; the cutting knife is therefore secured against displacement in the radial direction. Therefore, it is possible according to the invention to dispense with the knife terminal block required in the previously known construction and to let the centrifugal wedge rest directly on the knife breast.
  • the new knife holder therefore consists of fewer parts.
  • the form-locking or retaining strip can also be dispensed with as a result of the omission of the knife clamping strip, there is the possibility that the positive-fit connection holding the wear strip in the knife shaft body lies completely behind the back of the cutting knife.
  • the peripheral recess receiving the knife holder need only be formed as deep as is necessary for receiving the cutting knife; there are no longer any parts under the cutting knife.
  • the positive engagement holding the wear strip can be hook-shaped in the usual way and can be formed by a retaining strip which is screwed to the knife shaft body or otherwise firmly connected.
  • permanent magnets can be arranged in the form-fitting groove of the wear strip, against which said web of the knife carrier bears.
  • This allows knives, knife carriers and wear strips to be removed as a package remove the knife shaft or insert it into the knife shaft; nevertheless, the cutting knife screwed to the knife carrier is easily separable from the wear strip, for example for grinding the cutting knives.
  • the unit of cutting knife and knife holder is retained during the grinding process.
  • the sharpened cutting knives are adjusted on a special adjusting device, the web of the knife holder again forming the reference edge. For the adjustment only the tensioning screws are loosened a little and tightened again after the adjustment of the cutting knife.
  • centrifugal wedge rests against the knife breast via a wear bar that is detachably connected to it.
  • This wear bar is independent of the length of the chips to be produced and can be easily replaced.
  • the new knife holder is generally suitable for comb knives or so-called double-comb knives, but also for knives with a continuous cutting edge.
  • the wear strip insertion slots may then have, in the rectangular form-locking R itzerplättchen inserted and held by the cutting blade.
  • Each scoring plate can have a pin that projects beyond it on both sides and engages in insertion grooves of the wear strip that are open to the cutting knife.
  • the new holder therefore allows the change from comb knives to knives with a continuous cutting edge.
  • the new system has a high setting accuracy for the cutting knives and leads to low additional costs for knife grinding.
  • the wear strip arranged behind the knife can also serve as a scoring carrier.
  • the knife holder shown serves to fix a cutting knife 1 in a knife shaft.
  • the cutting knife 1 has a continuous cutting edge in the illustrated embodiment.
  • the knife holder consists of a knife holder 2, which has a web 2a, which extends over the major part of the cutting knife length and is narrow compared to the cutting knife height, on which there are holding tabs 2b which extend over a partial height of the cutting knife and have elongated holes 3 (see FIG. 3 ). Through the elongated holes 3, clamping screws 4 protrude, with which the knife carrier on the back 1b of the cutting knife 1 is held approximately in the radial direction and can be locked.
  • a holding bar 6 is screwed into the knife shaft body 5, which has a hook-shaped form fit 7 into which a wear bar 8 engages, against which the cutting knife 1 is supported with its back 1b.
  • the wear strip 8 has a form-fitting groove 9 which is open to the cutting knife 1 and into which the web 2a the knife holder 2 is inserted positively.
  • the form-fitting groove 9 forms a stop surface 9a for the web 2a, by means of which the protrusion of the cutting edge of the cutting knife over the surface of the knife shaft is determined.
  • Permanent magnets 10 are arranged in the form-fitting groove 9, against which said web 2a of the knife carrier 2 rests releasably.
  • the wear strip 8 also has insertion slots 11 into which rectangular scoring plates 12 are inserted in a form-fitting manner and held by the cutting knife 1.
  • Each scoring plate 12 has a pin 13 projecting over it on both sides, which engages in insertion grooves 14 of the wear strip 8 which are open to the cutting knife 1 (see FIG. 2).
  • the knife holder further comprises a centrifugal wedge 15 which bears against the breast 1a of the cutting knife 1 via a wear bar 16 releasably connected to it and presses the latter against the wear bar 8 with its back 1b.
  • the wear strip 16 of the centrifugal wedge 15 is wedge-shaped in its area directed against the knife edge.
  • the outer end of a leaf spring 17 is screwed onto the wear strip 8, the inner end of which is inserted into a corresponding recess 18 in the holding strip 6.
  • the leaf spring 17 is designed so that it tries to pull the wear strip 8 into the form fit 7.
  • the knife 1, knife carrier 2 and wear strip 8 can be removed from the knife shaft as a package, the leaf spring 17 from the.
  • comb knives are used for the new knife holder, in which no scoring plates 12 are used, it is advantageous if a comb strip 19 made of high-quality steel is screwed between the centrifugal wedge 15 and its wear strip 16.
  • This comb strip reduces wear in the flanks of the chip flow and can be replaced in a simple manner if necessary.
  • the wear strip 16 assigned to the centrifugal wedge can be retained in all systems, that is to say also when using knives with a continuous cutting edge, which then require the use of scoring plates.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Details Of Cutting Devices (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP82103445A 1981-05-21 1982-04-23 Porte-couteau dans un arbre de coupe pour une déchiqueteuse à bois Withdrawn EP0065652A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3120249A DE3120249C2 (de) 1981-05-21 1981-05-21 "Messerhalterung für die Messerwelle einer Holzzerspanungsmaschine"
DE3120249 1981-05-21

Publications (2)

Publication Number Publication Date
EP0065652A2 true EP0065652A2 (fr) 1982-12-01
EP0065652A3 EP0065652A3 (fr) 1984-03-28

Family

ID=6132901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103445A Withdrawn EP0065652A3 (fr) 1981-05-21 1982-04-23 Porte-couteau dans un arbre de coupe pour une déchiqueteuse à bois

Country Status (4)

Country Link
US (1) US4470442A (fr)
EP (1) EP0065652A3 (fr)
CA (1) CA1186142A (fr)
DE (1) DE3120249C2 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240667A1 (de) * 1982-11-04 1984-05-03 Reinhold W. Dr.-Ing. 5000 Köln Elsen Zerspanungsmaschine
DE8301544U1 (de) * 1983-01-21 1983-07-07 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach, De Ritzer fuer ein holzzerspanungswerkzeug
DE3316754C2 (de) * 1983-05-07 1986-01-09 Pallmann Maschinenfabrik GmbH & Co KG, 6660 Zweibrücken Messerhalterung für zerspanende Zerkleinerungsmaschinen
DE3415656C2 (de) * 1984-04-27 1986-03-06 Inter-Wood-Maschinen GmbH & Co KG, 8923 Lechbruck Messerhalterung für den Schrägschnittmesserkopf einer Holzzerspanungsmaschine
DE3517539A1 (de) * 1985-05-15 1986-11-20 Pallmann Maschinenfabrik GmbH & Co KG, 6660 Zweibrücken Halterung fuer auswechselbare ritzer
EP0428996B1 (fr) * 1989-11-17 1996-07-17 Peter Frey Consulting Rabot avec moyen de serrage rapide actionné par la force centrifuge
US5143311A (en) * 1990-05-17 1992-09-01 Newman Machine Company, Inc. Wood shavings forming apparatus and cutting roll adapted for use therewith
AT398403B (de) * 1993-03-23 1994-12-27 Boehler Ybbstalwerke Messerwalze und kammesser für messerwellenzerspaner
DE29506458U1 (de) * 1995-04-15 1995-07-06 Gebr. Leitz GmbH & Co, 73447 Oberkochen Messerkopf, insbesondere Hobelmesserkopf
AT406132B (de) * 1998-05-28 2000-02-25 Boehler Miller Messer Und Saeg Anordnung eines einweg-kamm-messers in einer messerwalze
DE19947399C2 (de) * 1999-10-01 2001-07-26 Pallmann Kg Maschf Messerträger für eine Zerspanervorrichtung
DE10116691B4 (de) * 2001-04-04 2004-07-15 Pallmann Maschinenfabrik Gmbh & Co Kg Vorrichtung zum Zerkleinern von faserigem Aufgabegut, insbesondere Stammholz
US7836923B2 (en) * 2002-10-25 2010-11-23 Key Knife, Inc. Ring slicer with easily removable knife and knife assembly
US7182112B2 (en) * 2003-06-27 2007-02-27 Designtek Llc Wood planing machine with an improved cutter head and method
CH709488A1 (de) 2014-04-14 2015-10-15 Oertli Werkzeuge Ag Werkzeugkopf und Verfahren zum Einsetzen und Spannen einer Schneidplatte, sowie Schneidplatte.
US11612943B2 (en) * 2019-08-01 2023-03-28 Iscar, Ltd. Insert adaptor and turning tool comprising same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2411978B2 (de) * 1974-03-13 1977-05-18 Maschinenfabrik B. Maier Kg, 4800 Bielefeld Messerwelle fuer eine holzverarbeitungsmaschine
CA1040072A (fr) * 1975-07-14 1978-10-10 Arnold Schmidt Arbre porte-outil pour machine a bois
DE7616598U1 (de) * 1975-11-21 1978-02-09 Fp-Fratelli Pessa-Oleodinamica Industriale, Concordia Sagittaria, Venedig (Italien) Werkzeug zum zerkleinern von holzmaterialien in spaene
DE2608056C3 (de) * 1976-02-27 1979-05-03 Hombak Maschinenfabrik Kg, 6550 Bad Kreuznach Holzzerspanungsmaschine
DE2730800C3 (de) * 1977-07-07 1980-02-21 Vereinigte Edelstahlwerke Ag (Vew), Wien Messeranordnung fur eine Schragschnlttmesserwelle einer Holzzerspanungsmaschüie
DE8002428U1 (de) * 1980-01-31 1980-04-24 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach Messerwelle zur erzeugung flaechiger holzspaene
DE3018359C2 (de) * 1980-05-14 1983-09-22 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach Messerwelle zur Erzeugung flächiger Holzspäne

Also Published As

Publication number Publication date
DE3120249A1 (de) 1982-12-23
CA1186142A (fr) 1985-04-30
EP0065652A3 (fr) 1984-03-28
DE3120249C2 (de) 1983-03-17
US4470442A (en) 1984-09-11

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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18D Application deemed to be withdrawn

Effective date: 19861031

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHMIDT, ARNOLD

Inventor name: KRATZBERGER, DIETER

Inventor name: KROECHER, HARRO