[go: up one dir, main page]

WO1996000627A1 - Procede et agencement pour aiguiser des chaines de scies, ou une chaine qui se deplace d'une maniere continue provoque le mouvement transversal d'une ou de plusieurs limes - Google Patents

Procede et agencement pour aiguiser des chaines de scies, ou une chaine qui se deplace d'une maniere continue provoque le mouvement transversal d'une ou de plusieurs limes Download PDF

Info

Publication number
WO1996000627A1
WO1996000627A1 PCT/DK1995/000283 DK9500283W WO9600627A1 WO 1996000627 A1 WO1996000627 A1 WO 1996000627A1 DK 9500283 W DK9500283 W DK 9500283W WO 9600627 A1 WO9600627 A1 WO 9600627A1
Authority
WO
WIPO (PCT)
Prior art keywords
saw
file
files
tooth
teeth
Prior art date
Application number
PCT/DK1995/000283
Other languages
English (en)
Other versions
WO1996000627A9 (fr
Inventor
Kåre SPANG
Original Assignee
Spang Kaare
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 Spang Kaare filed Critical Spang Kaare
Priority to AU27863/95A priority Critical patent/AU2786395A/en
Priority to EP95923206A priority patent/EP0767716A1/fr
Publication of WO1996000627A1 publication Critical patent/WO1996000627A1/fr
Publication of WO1996000627A9 publication Critical patent/WO1996000627A9/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
    • B23D63/08—Sharpening the cutting edges of saw teeth
    • B23D63/16—Sharpening the cutting edges of saw teeth of chain saws
    • B23D63/166—Sharpening the cutting edges of saw teeth of chain saws without removal of the saw chain from the guide bar
    • B23D63/168—Sharpening the cutting edges of saw teeth of chain saws without removal of the saw chain from the guide bar the saw chain moving around the guide bar

Definitions

  • the present invention relates to a device for sharpening the teeth of motor chain saws.
  • Users of motor saws are familiar with the necessity of sharpening the teeth on the chain at relatively frequent intervals to maintain satisfactory cutting, and are well aware that this procedure is difficult and time-consuming, or is a source of irritation. By its nature, the problem is particularly familiar to forestry workers.
  • the invention is intended not merely as an 'ancillary' device, but as a genuine device for more or less automatic performance of the sharpening operation.
  • the invention demonstrates the possibility of using a new sharpening
  • the file perpendicular to its (the file's) longitudinal axis, in other words, a movement at an angle with respect to the guide bar, will cause the leading end of the file to move increasingly further from the guide bar, while the opposite end of the file will move increasingly closer.
  • the file will execute a progressive longitudinal movement relative to the tooth; that is, it will automatically perform a unidirectional sharpening action as the saw chain is driven forward by the file or as the file is traversed by movement of the chain along the guide bar.
  • the invention simply utilises the fact that the teeth can move along the guide bar, whereby a type of dynamic sharpening is performed by the angular movement of the laterally mounted file relative to the guide bar, the file being mounted movably in a separate driving device attached to the guide bar, while the guide bar is mounted in a file drive support frame. This ensures that the file movement itself is generated automatically and that the file is maintained at the desired sharpening angle relative to the tooth throughout the operation,
  • the file be moved in a direction perpendicular to its own direction, but may be positioned more or less at an angle.
  • the angle between the direction of travel of the file and the file angle should not be identical; in other words, the direction of travel of the file for a given tooth sharpening angle may be more or less at an angle to the guide bar. The greater this angle, the faster the file movement, and the shorter the file which can be used for a given sharpening 'distance'.
  • the width of the file path should be such that, on one side, it intersects the start of the tooth path on the guide bar and, on the other side, it intersects the end of the tooth path, ensuring that the file interacts with the tooth over its (the file's) full length and over the full length of the guide bar.
  • the files are carried on an endless belt, on which they are mounted at a pitch corresponding to that of the teeth on the chain, the belt being of sufficient operational length to extend along the motor saw guide bar, but at an angle to the latter, so that the files on the said belt continuously engage with and sharpen the successive teeth on the chain.
  • sharpening may be carried out at a high speed, enabling all of the teeth on the chain to be sharpened in a fraction of the time normally required,
  • this solution may also be generally attractive if it is not wished to prematurely abandon the system employing only one or a relatively small number of files, given that the purpose of using a special sharpening device is to ensure that the said file or files is or are engaged automatically with successive teeth or groups of teeth on the chain, and that sharpening can be carried out even at extremely high operating speeds, provided that complete sharpening of all or the teeth is performed
  • a very significant advantage of the invention is that the sharpening device can be attached to the motor saw itself as an accessory, normally in a passive mode, from which it may be deployed in an operational mode above or below the guide bar of the saw to interact with the chain-mounted teeth extending from the latter.
  • the motor saw may, thereby, be equipped with an integral sharpening unit which may be used to sharpen the teeth in an extremely short time, without the least difficulty to the user, who is required only to engage and disengage the device at intervals in a relatively short time.
  • the files may be driven at an extremely high speed by the chain saw's own motor or at a normal, slower and probably safer speed by driving the file- carrying belt by motor or manual power, for example if the resistance to movement of the toothed chain is increased.
  • the sharpening device may also be installed inside the motor casing, in which case it may either be engaged and disengaged externally or even left in permanent engagement; sharpening may be sufficiently effective if the teeth are sharpened briefly, successively and individually.
  • Fig. 1 is a plan view of an automatic sharpening device in accordance with the invention.
  • Fig. 2 is an elevation of the same device
  • the automatic sharpening device 2 used to sharpen the teeth on the chain 4 of a chain saw 6 consists of a support frame 8, the ends of which are provided with two rollers 10 supported in bearings, which rollers carry an endless beit 12 to which are attached a number of round files 14 mounted at an angle to the longitudinal axis 16 of the belt.
  • the perpendicular distance between the round files 14 is less than the distance between the edges 26 of two successive, similarly oriented teeth 18, the angle of the files relative to the direction of travel 16 of the belt being adjusted to suit the desired sharpening angle of the cutting edges on the teeth, the normal value of which on a chain saw is approx. 30°.
  • the support frame 8 is provided with a pivoted, adjustable bracket 20 provided with clamps 22 for clamping the guide bar 24 of a chain saw.
  • the bracket 20 is adjustable to an angle V relative to the longitudinal axis 16 of the belt (which coincides with the direction of travel of the files).
  • the value of the angle V is a function of the distance between the files and of the distance between two successive, similarly oriented teeth 18.
  • the angle V combined with the angular position of the file relative to the longitudinal axis 16 of the belt, ensures correct engagement of the files 14 with two successive, similarly oriented teeth 18 on the saw chain.
  • the combination of the angular position of the files relative to their direction of travel and the angle of the saw chain relative to the same direction, together with the length of the files, means that at least two similarly oriented teeth on the saw chain are in engagement with the files, while two further teeth are, respectively, on the point of engagement and on the point of disengagement with the files.
  • the files 14 used to sharpen the cutting edges 26 of the teeth 18 are round files, both ends 28 of which are tapered and smoothed to facilitate their entry in the cutter recess without damaging the tooth 18.
  • the files 14 are attached to the belt 12 by fastening devices consisting of a swan-neck stalk 30, one end of which is attached to the belt 12 and the other to the file 14, close to the mid-point.
  • fastening devices consisting of a swan-neck stalk 30, one end of which is attached to the belt 12 and the other to the file 14, close to the mid-point.
  • the attachment between the belt or chain 12 and the stalks 30 may be of a pivoted, lockable type, enabling the files 14 to be locked in practically any random position relative to their direction of travel 16. This enables the tooth to be sharpened to a desired, optimum angle since only the angular position of the guide bar relative to the file path can be adjusted correspondingly to suit the tooth pitch.
  • the relative settings should be adjusted so that sharpening takes place with the tooth edges. However, this does not preclude the possibility of sharpening against the edges.
  • all of the files should be set at the same angle relative to their direction of travel 16; in other words, the longitudinal axes 42 of the files must be aligned in parallel during sharpening.
  • the tooth sharpening files which, in the foregoing, have been described as round files 14, need not necessarily be of a round cross- section, provided that they axe of an appropriate shape in the region of interaction with the teeth.
  • each of the swan-neck stalks 30 may be provided with a flat file 32 aligned parallel to the round file 14 and attached to a spur-shaped stalk 34 projecting from the rear of the stalk 30 as illustrated in Figs. 1 and 2.
  • the upper face of the fiat file is located at a suitable level and distance relative to the round file, in such manner that a chain saw drive dog 36 located between two successive teeth is dressed by the fiat file as the teeth are sharpened by the round files 14.
  • the side of the belt 12 facing the chain 4 is enclosed by a guide in the form of a rail 38, which is provided with a slot 40 in the direction of the belt to permit passage of the file stalks 30 attached to the belt.
  • the rail 38 is slightly curved at a curvature identical to that of the saw guide bar 24, ensuring that the files and teeth follow the same path within the sharpening range.
  • the belt and file arrangement consist of an endless belt of a special, flexible, synthetic material carried on two rollers in similar manner to the embodiment already described.
  • the upper face of the belt is provided with a number of angular ribs corresponding to a desired tooth sharpening angle.
  • the top surfaces of the ribs are coated with an abrasive, such as powdered diamond or carborundum, and are otherwise of similar shape to the round and fiat files already described.
  • the flexibility of the synthetic material is utilised in combination with the facility of the ribs, which replace actual metal files, to travel over the rollers without damaging the abrasive coating since the ribs, being oblique, can fiex during this passage.
  • An embodiment of this type consists of two belts/chains 12 and files 14, the files 14 on each belt/chain being set at an individual angle relative to the direction of travel due to the addition of an upper sharpening system to sharpen the teeth at the upper side of the guide bar.
  • the new principle of sharpening the teeth of a chain saw in a quick, simple manner may naturally be employed in other embodiments.
  • the automatic sharpening device may be mounted directly on the chain saw to enable sharpening of the teeth to be initiated by one simple operation of a handle or pushbutton. Sharpening of the teeth may also be carried out continuously while the saw is in use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

Les utilisateurs de scies entraînées par un moteur, avec des supports sans fin pour les dents, savent que ces dents doivent être limées plutôt souvent pour que la scie continue à bien couper. On connaît des dispositifs auxiliaires pour faciliter le travail de limage et également pour ajuster la direction du limage, qui doit former un certain angle avec la direction transversale des dents. Souvent, avec les dispositifs auxiliaires connus, on lime une dent immobilisée d'une manière temporaire à la fois, ce qui rend le travail de limage long et difficile. L'invention concerne un principe et un appareil entièrement nouveaux pour limer d'une manière continue les dents (18) d'une scie à couper à lame continue (7): on effectue le limage à l'aide de limes (14) déplacées avec un mouvement dans une direction en étant engagées avec les dents (18) déplacées suivant la longueur de la lame de chaîne (7), ladite lime (14) étant tenue dans une position oblique souhaitée par rapport à la dent pour limer cette dernière avec l'angle de coupe souhaité (v) en étant déplacée dans une direction oblique par rapport à la lame de chaîne, de sorte que la lime (14), durant le mouvement de la chaîne, va effectuer un mouvement purement longitudinal par rapport à la dent.
PCT/DK1995/000283 1994-06-30 1995-06-30 Procede et agencement pour aiguiser des chaines de scies, ou une chaine qui se deplace d'une maniere continue provoque le mouvement transversal d'une ou de plusieurs limes WO1996000627A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU27863/95A AU2786395A (en) 1994-06-30 1995-06-30 Method and arrangement for sharpening saw chains, whereby a continuously moving chain causes a transverse motion of one or more files
EP95923206A EP0767716A1 (fr) 1994-06-30 1995-06-30 Procede et agencement pour aiguiser des chaines de scies, ou une chaine qui se deplace d'une maniere continue provoque le mouvement transversal d'une ou de plusieurs limes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0780/94 1994-06-30
DK78094A DK78094A (da) 1994-06-30 1994-06-30 Fileautomat til kædesave

Publications (2)

Publication Number Publication Date
WO1996000627A1 true WO1996000627A1 (fr) 1996-01-11
WO1996000627A9 WO1996000627A9 (fr) 1996-02-08

Family

ID=8097477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1995/000283 WO1996000627A1 (fr) 1994-06-30 1995-06-30 Procede et agencement pour aiguiser des chaines de scies, ou une chaine qui se deplace d'une maniere continue provoque le mouvement transversal d'une ou de plusieurs limes

Country Status (5)

Country Link
EP (1) EP0767716A1 (fr)
AU (1) AU2786395A (fr)
CA (1) CA2194149A1 (fr)
DK (1) DK78094A (fr)
WO (1) WO1996000627A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328020A3 (fr) * 1988-02-12 1990-12-12 The Dow Chemical Company Utilisation d'un catalyseur pour des résines époxy
WO2011023160A1 (fr) * 2009-08-26 2011-03-03 Sanwald Juergen Adaptateur de lime pour affûter des chaînes de scie
WO2011023162A1 (fr) * 2009-08-26 2011-03-03 Sanwald Juergen Dispositif pour affûter automatiquement des chaînes de scie et procédé correspondant
WO2011100996A1 (fr) * 2010-02-20 2011-08-25 Gardena Manufacturing Gmbh Scies à chaîne
US8932114B2 (en) 2009-06-25 2015-01-13 Blount, Inc. Chain link sharpening method and apparatus
US9192997B2 (en) 2008-07-08 2015-11-24 Blount, Inc. Bar mounted sharpener

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151445A (en) * 1936-02-04 1939-03-21 Atlantic Service Company Inc Machine tool
DE1934481A1 (de) * 1968-07-09 1970-01-15 Oehrli John Wesley Einrichtung und Verfahren zum Schaerfen von Saegen,insbesondere von Saegeketten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151445A (en) * 1936-02-04 1939-03-21 Atlantic Service Company Inc Machine tool
DE1934481A1 (de) * 1968-07-09 1970-01-15 Oehrli John Wesley Einrichtung und Verfahren zum Schaerfen von Saegen,insbesondere von Saegeketten

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328020A3 (fr) * 1988-02-12 1990-12-12 The Dow Chemical Company Utilisation d'un catalyseur pour des résines époxy
US9192997B2 (en) 2008-07-08 2015-11-24 Blount, Inc. Bar mounted sharpener
US8932114B2 (en) 2009-06-25 2015-01-13 Blount, Inc. Chain link sharpening method and apparatus
WO2011023160A1 (fr) * 2009-08-26 2011-03-03 Sanwald Juergen Adaptateur de lime pour affûter des chaînes de scie
WO2011023162A1 (fr) * 2009-08-26 2011-03-03 Sanwald Juergen Dispositif pour affûter automatiquement des chaînes de scie et procédé correspondant
WO2011100996A1 (fr) * 2010-02-20 2011-08-25 Gardena Manufacturing Gmbh Scies à chaîne
US9186737B2 (en) 2010-02-20 2015-11-17 Husqvarna Ab Chainsaw with a sharpening element

Also Published As

Publication number Publication date
CA2194149A1 (fr) 1996-01-11
DK78094A (da) 1995-12-31
AU2786395A (en) 1996-01-25
EP0767716A1 (fr) 1997-04-16

Similar Documents

Publication Publication Date Title
US2677289A (en) Chain saw filing fixture
CA1062910A (fr) Appareil a decoller les tapis et les carreaux
US3744349A (en) Chain saw sharpener
EP0058012B1 (fr) Dispositif d'affûtage pour chaîne de scie
WO1996000627A1 (fr) Procede et agencement pour aiguiser des chaines de scies, ou une chaine qui se deplace d'une maniere continue provoque le mouvement transversal d'une ou de plusieurs limes
WO1996000627A9 (fr) Procede et agencement pour aiguiser des chaines de scies, ou une chaine qui se deplace d'une maniere continue provoque le mouvement transversal d'une ou de plusieurs limes
EP1011907B1 (fr) Procede et appareil d'affutage des dents d'une scie a chaine
US4355551A (en) Chain saw bar attachment
US6758730B1 (en) Grinding machine and method of grinding grass mower rotary blades
US5117713A (en) Arrangement in automatic saw chain grinders
US4503735A (en) Chain saw sharpening device
WO1995016545A1 (fr) Moyen permettant d'appliquer un mouvement alternatif a deux elements, l'un par rapport a l'autre.
US5488884A (en) Method and apparatus for side-grinding saw blade teeth
US3952615A (en) Saw chain sharpening system
US2549570A (en) Surface conditioning tool
US4177697A (en) Apparatus for sharpening a chain saw
WO1988009237A1 (fr) Agencement dans des rectifieuses automatiques de chaines de scie
US2440633A (en) Saw filing tool
DE19925750A1 (de) Handgeführte Laubsägemaschine
EP3535090B1 (fr) Aiguiseur automatique pour chaine de tronçonneuse
US4429596A (en) Rotary steel filing apparatus for sharpening saw chains
US3204491A (en) Machines for sharpening saws
US4391173A (en) Shearing cradle
US4903552A (en) Guide for filing saw chain
US383720A (en) Robert gaskin

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AT AU BB BG BR BY CA CH CN CZ CZ DE DE DK DK EE ES FI FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SK TJ TM TT UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

COP Corrected version of pamphlet

Free format text: PAGE 12,SUMMARY,DELETED

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2194149

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 1995923206

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 1997 765683

Country of ref document: US

Date of ref document: 19970403

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: 1995923206

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWW Wipo information: withdrawn in national office

Ref document number: 1995923206

Country of ref document: EP