EP0820836A1 - Procédé et dispositif pour dresser les couteaux d'un broyeur, notamment pour bois - Google Patents

Procédé et dispositif pour dresser les couteaux d'un broyeur, notamment pour bois Download PDF

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Publication number
EP0820836A1
EP0820836A1 EP97111691A EP97111691A EP0820836A1 EP 0820836 A1 EP0820836 A1 EP 0820836A1 EP 97111691 A EP97111691 A EP 97111691A EP 97111691 A EP97111691 A EP 97111691A EP 0820836 A1 EP0820836 A1 EP 0820836A1
Authority
EP
European Patent Office
Prior art keywords
knife
grinding
cutting
feed
knives
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
EP97111691A
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German (de)
English (en)
Other versions
EP0820836B1 (fr
Inventor
Wilhelm Pallmann
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.)
Pallmann Maschinenfabrik GmbH and Co KG
Original Assignee
Pallmann Maschinenfabrik 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 Pallmann Maschinenfabrik GmbH and Co KG filed Critical Pallmann Maschinenfabrik GmbH and Co KG
Publication of EP0820836A1 publication Critical patent/EP0820836A1/fr
Application granted granted Critical
Publication of EP0820836B1 publication Critical patent/EP0820836B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/363—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of blades mounted on a turning drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member

Definitions

  • DE-PS 43 16 514 C2 describes a method and a device described that allow the cutting of knives, those in cylindrical, rotatable knife carriers of shredding machines are held by releasable clamping, sharpen by grinding without removing the knives from the Knife holder to have to remove.
  • the knife edges are sharpened when sharpening constantly rotating knife carrier while the programmed grinding feed according to the state of wear in the radial direction.
  • this sharpening method has the disadvantage that due to the constant rotation of the knife holder during sharpening the Front of the knife receives a contour that matches the cutting circle runs in conformity, which inevitably means the clearance angle Results in zero.
  • the clearance angle has zero during processing proven of many materials, but there are substances whose Properties such as density and coefficient of friction, one on it require a coordinated specific clearance angle. That is for example the case for some types of wood, for which their high density and / or their high resin content due to the large coefficient of friction of the clearance angle zero one large amount of heat generated during machining.
  • the invention is therefore based on the object of resharpening the knife in the installed state creating a Material properties of the material to be processed to allow adapted clearance angle without reducing the other, with that described in DE-PS 43 16 514 C2 Sharpening method already achieved advantages to have to do without.
  • the knife carrier removed from the shredding machine and be treated in a special sharpening device.
  • This sharpening device differs from that in DE-PS 43 16 514 C2 described device according to claim 6 substantially in that the feed path of the grinding support too the radial jet of the tangent knife edge Cutting flight circle inclined by the desired clearance angle is.
  • the resharpening device consists of a Machine frame 1 on which a device carrier 2 by means of a circular, vertical support plate 3 is attached.
  • a slewing ring 6 mounted with a Axial turntable 7 for central attachment a knife ring 8 is connected.
  • the slewing ring 6 is from a pinion 9 can be driven, its drive motor 10 on the Back of the machine frame 1 is flanged.
  • the Machine frame 1 is surrounded by a protective housing 12 which with a clear view of the Parts essential to the invention are only shown in FIGS. 2 and 3 is.
  • a pneumatic actuated locking device 4 attached, the locking bolt 5 gradually turning the knife ring 8 in succession in position bores 14 which engages in a its two washers 13 the individual knife holders 15 are assigned in such a way that they are on the extension a straight line, which is the center point M of the knife ring 8 connects to the respective knife edge S.
  • a grinding unit 17 is attached to the device carrier 2, that from a grinding wheel 18, a drive motor 19 and there is a belt drive 20.
  • the grinding unit 17 is on a support 21 attached to a feed path 22 in radial direction and on an axial sliding guide 23 in is movable in the axial direction.
  • the axial reciprocation during the sharpening process one controlled by limit switches Hydraulic unit 24.
  • the grinding unit 17 is a program-controlled Special drive 25.
  • a Bellows sleeve 26 is provided.
  • an adjustment device 28 is located on the device carrier 2 attached that from a pneumatically operated knife stop 29 there is a position button 30 for detecting the Wear condition of the inner wall 8 'of the knife ring 8 assigned is.
  • a position button 30 for detecting the Wear condition of the inner wall 8 'of the knife ring 8 assigned is.
  • the program-controlled radial movement of the knife stop 29 is provided by a pneumatic unit 33.
  • the feed path 22 of the grinding support 21 is inclined to the radial beam R of the cutting flight circle K R tangent to the effective range of the grinding unit 17 by the desired clearance angle ⁇ .
  • the effective range of the grinding unit 17 is offset by the attachment angle ⁇ from the effective direction of the adjusting device 28, with the result that the feed path 22 of the grinding support 21 is offset from the effective direction of the adjusting device 28 the angle ( ⁇ - ⁇ ) is inclined.
  • a tool combination 35 For advancing the individual knives 32 up to that of the position button 30 defined knife stop 29 is a tool combination 35, which is mounted on a tool stand 34 is. It consists of three screw spindles 36 for loosening and Retighten the clamping screws 37 on the knife holders 15; furthermore from two knife plungers 39 for individual advancement the knife 32 and finally two hold-downs 40 which immobilizing the loosened knife holding plates 38 during worried about pushing the knives. All tools 36, 39 and 40 are pneumatically operated under program control.
  • a Compressed air nozzle 41 attached, which is also on a Slide rail 42 by means of one controlled by limit switches Pneumatics can be moved back and forth in the axial direction.
  • the grinding geometry shown in FIG. 6 on a knife 32 shown in a greatly enlarged manner shows a knife edge S, the position of which is defined by the locking position P corresponding to the position bores 14.
  • the radial beam R starting from the center M of the cutting circle K R and the radial beam r starting from the center m of the grinding circle K r intersect, the tangents t R and t r assigned to them including the clearance angle ⁇ .
  • the grinding feed v takes place in the direction of the radial jet r of the grinding circle k r , the end face F of the knife receiving a concave contour corresponding to the grinding circle k r .
  • the resharpening device described as an embodiment of the invention works as follows:
  • Knife ring 8 After removal of a knife ring 8 from a cutting machine is driven into the sharpening area on a special carriage 44 and there in front of the resharpening device in the one shown in FIG. 2 Position brought into position. Then the one and only Removal slide 16 extended so far that its Support rods 11 reach under the knife ring 8 and him in her Return movement into that provided in the turntable 7 Pull the centering, in which it is then attached. Now the Knife ring 8 first of all a cleaning procedure by means of the reciprocating compressed air nozzle 41 slowly rotating knife ring 8 subjected.
  • the centrally controlled, automatic functional sequence begins the actual sharpening process: First, loosen the Screw spindles 36, the clamping screws 37 of the knife holder in question 15. At the same time the knife stop 29 Adjustment device 28 from its pneumatic 33 radially so far advanced until the associated position button 30 on one of the relevant knife edge S adjacent location of the Inner wall 8 'of the knife ring 8, e.g. on the neighboring one Wear shoe 43 is present. Now the hold-downs 40 and the knife plunger 39 activated and the knife in question 32 in the knife ring 8 pushed in until its Cut S on the knife stop 29 of the adjusting device 28 triggers.
  • This knife position is now by tightening the clamping screws 37 by means of the screw spindles 36 at the same time Retract the knife plunger 39 and the hold-down device 40 fixed.
  • the central control then causes the retraction the knife stop 29 and the locking bolt 5 the position bore 14 and the turning of the knife ring 8 by a knife division, after which the locking bolt 5 into the next position bore 14 engages. Then repeated advancing the knife in the manner described.
  • the sequential control system delivers the grinding support 21 so far to the knife ring 8 until the started Grinding wheel 18 in contact with one of the advanced ones Knife 32 is coming.
  • the grinding wheel 18 takes up Torque on the current consumption of their drive motor 19th significantly increased and thus as a control impulse of the automatic program signals the start of the effective grinding feed.
  • the program-controlled special drive 25 moves this Grinding unit 17 gradually against the end face F des relevant knife 32.
  • the grinding wheel 18 is also slow axially back and forth. As soon as the grinding process starts a knife 32 and the knife ring 8 at another point the knife feed is completed, the two Active systems moved back to their starting positions and the knife ring 8 rotated by one knife division.
  • Knife 32 advanced one after the other, so the grinding process for those due to the angular misalignment ⁇ of the two effective ranges Knives not yet sharpened by adjustment and grinding 32 continued separately. After completing the described sharpening process are the cutting edges S of all knives 32 at constant, uniform cutting board over the inner wall 8 'of Knife ring 8 sharp again.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP97111691A 1996-07-23 1997-07-10 Procédé et dispositif pour dresser les couteaux d'un broyeur, notamment pour bois Expired - Lifetime EP0820836B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19629668A DE19629668C1 (de) 1996-07-23 1996-07-23 Verfahren und Vorrichtung zum Nachschärfen von Messern für Zerkleinerungsmaschinen, insbesondere von Zerspanmessern für Holz
DE19629668 1996-07-23

Publications (2)

Publication Number Publication Date
EP0820836A1 true EP0820836A1 (fr) 1998-01-28
EP0820836B1 EP0820836B1 (fr) 2001-02-28

Family

ID=7800582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111691A Expired - Lifetime EP0820836B1 (fr) 1996-07-23 1997-07-10 Procédé et dispositif pour dresser les couteaux d'un broyeur, notamment pour bois

Country Status (4)

Country Link
US (1) US5868602A (fr)
EP (1) EP0820836B1 (fr)
CA (1) CA2211242C (fr)
DE (1) DE19629668C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1151680A2 (fr) * 2000-05-04 2001-11-07 Hauni Maschinenbau AG Méthode et appareil pour l'aiguisage des couteaux pour couper le tabac

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19900566B4 (de) * 1999-01-09 2005-03-24 B. Maier Zerkleinerungstechnik Gmbh Messerring-Zerspaner zum Zerspanen von Hackschnitzeln
DE19900924A1 (de) * 1999-01-13 2000-07-20 Maier Zerkleinerungstech Gmbh Vorrichtung zum Reinigen des Messerrings eines Messerring-Zerspaners
DE19921597C1 (de) * 1999-05-07 2000-07-27 Maier Zerkleinerungsanlage Gmb Messerring-Zerspaner zum Zerspanen von Hackschnitzeln
DE10017719A1 (de) * 2000-04-11 2001-10-18 Knecht Maschb Gmbh Vorrichtung zum Schleifen von Messern
DE10125922B4 (de) * 2001-05-21 2009-02-12 Pallmann Maschinenfabrik Gmbh & Co Kg Zerkleinerungseinheit einer Zerkleinerungsvorrichtung zum Zerkleinern von Aufgabegut, insbesondere Messerkorb eines Zerspaners für Holz
CN101579866B (zh) * 2009-06-12 2010-12-01 云南永利发林业有限公司 盘式刨片机
DE102011052529A1 (de) * 2011-08-09 2013-02-14 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Verfahren zum Schärfen, insbesondere Nachschärfen von Messern eines Messerringzerspaners
DE102011052538A1 (de) * 2011-08-09 2013-02-14 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Vorrichtung zum Schärfen von Messern eines Messerrings für einenMesserringzerspaner
WO2013091110A1 (fr) * 2011-12-23 2013-06-27 Williams And White Machine Inc. Meuleuse à axes multiples à commande par ordinateur pour meuler des lames de scie
CN103243477A (zh) * 2013-04-26 2013-08-14 吴江江旭纺织有限公司 一种圆机环切刀
CN110026834A (zh) * 2019-04-08 2019-07-19 四川省青城机械有限公司 一种成型刀在线磨刀装置
CN110814639B (zh) * 2019-08-06 2022-02-01 河南石力金刚石制品股份有限公司 一种航空发动机及燃气轮机叶片榫根的修整滚轮的加工方法
CN113396695A (zh) * 2021-07-25 2021-09-17 石河子大学 一种具有磨刀结构的青饲料收获机切碎刀

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620606A (en) * 1951-01-11 1952-12-09 Edwin A Dvorak Portable jointer knife grinder
DE4316514A1 (de) * 1993-05-18 1994-11-24 Pallmann Kg Maschf Verfahren und Vorrichtung zum Nachschärfen der Messer von Zerkleinerungsmaschinen
US5377454A (en) * 1992-05-01 1995-01-03 The Gleason Works Method of truing and angling cutter blades by sharpening

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620606A (en) * 1951-01-11 1952-12-09 Edwin A Dvorak Portable jointer knife grinder
US5377454A (en) * 1992-05-01 1995-01-03 The Gleason Works Method of truing and angling cutter blades by sharpening
DE4316514A1 (de) * 1993-05-18 1994-11-24 Pallmann Kg Maschf Verfahren und Vorrichtung zum Nachschärfen der Messer von Zerkleinerungsmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1151680A2 (fr) * 2000-05-04 2001-11-07 Hauni Maschinenbau AG Méthode et appareil pour l'aiguisage des couteaux pour couper le tabac
EP1151680A3 (fr) * 2000-05-04 2004-05-26 Hauni Maschinenbau AG Méthode et appareil pour l'aiguisage des couteaux pour couper le tabac

Also Published As

Publication number Publication date
CA2211242A1 (fr) 1998-01-23
US5868602A (en) 1999-02-09
DE19629668C1 (de) 1998-01-02
EP0820836B1 (fr) 2001-02-28
CA2211242C (fr) 2006-10-10

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