EP0773084A2 - Outil de sciage, en particulier chaine de sciage - Google Patents

Outil de sciage, en particulier chaine de sciage Download PDF

Info

Publication number
EP0773084A2
EP0773084A2 EP97101210A EP97101210A EP0773084A2 EP 0773084 A2 EP0773084 A2 EP 0773084A2 EP 97101210 A EP97101210 A EP 97101210A EP 97101210 A EP97101210 A EP 97101210A EP 0773084 A2 EP0773084 A2 EP 0773084A2
Authority
EP
European Patent Office
Prior art keywords
teeth
cutting
cutting edges
saw according
saw
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
EP97101210A
Other languages
German (de)
English (en)
Other versions
EP0773084A3 (fr
EP0773084B1 (fr
Inventor
Christoph Rossmann
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.)
HARD-STIFTUNG
Hard Stiftung
Original Assignee
HARD-STIFTUNG
Hard Stiftung
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 HARD-STIFTUNG, Hard Stiftung filed Critical HARD-STIFTUNG
Publication of EP0773084A2 publication Critical patent/EP0773084A2/fr
Publication of EP0773084A3 publication Critical patent/EP0773084A3/fr
Application granted granted Critical
Publication of EP0773084B1 publication Critical patent/EP0773084B1/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
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/142—Cutter elements
    • B27B33/145—Cutter elements having plural teeth on a single link
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • 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
    • Y10T83/909—Cutter assemblage or cutter element therefor [e.g., chain saw chain]
    • 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
    • Y10T83/909—Cutter assemblage or cutter element therefor [e.g., chain saw chain]
    • Y10T83/913—With means permitting removal of cutter element
    • 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
    • Y10T83/909—Cutter assemblage or cutter element therefor [e.g., chain saw chain]
    • Y10T83/917—Having diverse cutting elements
    • 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
    • Y10T83/909—Cutter assemblage or cutter element therefor [e.g., chain saw chain]
    • Y10T83/925—Having noncutting depth gauge

Definitions

  • the invention relates to a saw and in particular a chainsaw, as specified in the preamble of claim 1 in detail.
  • the previously known saws are all characterized and even if they are equipped with differently shaped teeth, by a method of operation in which the sawdust is not cut but torn.
  • the hitherto known saws are therefore not actually “cutting tools” but rather “tearing tools”. This is particularly evident when considering the separable surfaces on the sawn material that can be achieved with the saws known to date. These are characterized by the so-called "sawing roughness". In many cases, the difference in the length of tears of the individual fibers in the respective separating surface is of the order of mm.
  • the invention is therefore based on the object of designing a saw of the type mentioned at the outset in such a way that it can deliver a smooth saw cut and only requires a comparatively low driving force.
  • a saw according to the invention distributes the task of separating the cohesion in the sawn material to at least two different types of tooth.
  • Cutting teeth protruding from the cutting depth of a work step cut into the sawing material accordingly;
  • a cutting tooth design with two knife outer edges running along the cutting direction and symmetrically to it from crescent-shaped curvature to the outside is preferred, which cut into the sawing material up to its highest rounding point and permit sawing both in the forward direction and in the backward direction with the same effectiveness.
  • Subsequent clearing teeth then remove the cut material in the manner of a planing knife. This results in a smooth cut without steps and without fiber roughness, that is, a product surface that has previously only been achieved by re-planing or regrinding.
  • the sawing operation requires only a small driving force in both running directions, so that an electric accumulator may be sufficient for the sawing drive.
  • the forces acting on the saw also show a completely symmetrical distribution, so that no lateral guidance is required in the sawing operation.
  • the operating speed is low, so that there is no risk of accidents caused by flying parts even if the carrier is derailed or broken.
  • the slow running enables the saw to be stopped quickly in an emergency, and this also increases the stability of the cutting elements.
  • FIG. 1 shows two interlinked chain links A and B, each of which consists of a central core part K and two outer side parts S and S 'in the manner shown for the chain link A in FIG. 2, but in FIG. 1 to illustrate the shape of the core part K, the side part S 'has been removed. Both the core part K and the side parts S and S 'can each be composed of riveted metal sheets.
  • the running direction of the saw chain which can be seen in FIG. 3 from a large number of such chain links, is indicated in FIG. 1 by a double arrow L, since a sawing operation occurs when the chain links move from left to right as well as from right to left is possible and equally effective.
  • Both the core parts K and the side parts S and S ' are each of the same design in all chain links, and in addition the side parts S and S' are each designed identically; therefore only the core part K and the side part S of the chain link A are described in detail below.
  • the core parts K have a straight upper edge and a straight lower edge, a wedge-shaped drive tooth 17 projecting downward over the lower edge, via which the saw chain can be set in motion while a cutting element is formed on the upper edge, which in the example shown forms the middle part of a broaching tooth 10 which, as shown in FIGS. 2 and 4, also extends over the adjoining side parts S and S '.
  • the core part K of the individual member A has a forwardly directed and curved downward on its longitudinal central axis approach 1, which merges with a saddle 14 in the upper edge of the core part K and at its free End ends in a downward nose 11, which is still above the longitudinal central axis of the individual member A.
  • Approach 1 corresponds to an upper recess 3, which is formed from the rear edge into the respective core part K and in the assembled saw chain in each case receives the approach 1 of the next core part K, as shown in FIG. 1 for the two chain links A and B. is shown.
  • the recess 3 has near her inner reason a bevel 12, which is assigned to the nose 11 at the free end of the neck 1.
  • a horn 13 is formed at the upper end of the recess 3 at the transition point into the upper edge of the respective core part K, which cooperates with the saddle 14 of the preceding core part K in the assembled saw chain, as can also be seen from the illustration in FIG. 1 .
  • a hook 2 extends from the rear edge of the core part K and is bent downwards and forwards at its free end, this free end lying below the longitudinal central axis of the respective core part K.
  • a lower recess 4 is provided which receives the hook 2 of the preceding core part K in the assembled saw chain.
  • Each recess 4 has a notch 15 at its inner end, which corresponds to a position and shape of a projection 16 formed on the rear edge of the associated hook 2.
  • an upward and rearward curved joint pin 5 of approximately comma shape is formed, which nestles in the assembled saw chain to the inner cavity of the hook 2 of the preceding core part K, as shown in FIG. 1 for the chain links A. and B is shown.
  • the curved surfaces of the interacting sections of all core parts K preferably follow circular arcs, the radii and the center points of these circular arches for corresponding surfaces differing from one another or being offset from one another in such a way that all relative movements have ended before mutual contact and contacting surfaces roll smoothly on one another. This results in gradually closing gaps between the surfaces assigned to one another, so that fine dirt accumulating in the sawing operation is pushed and removed at the ends of the contact surfaces.
  • the working chain of the saw chain in the respective direction of travel is subtracted from the pressure thus passed on.
  • the tensile force of the saw chain is transmitted from the contact surfaces between the shoulder 1 in the area of the nose 11 on the one hand and the limitation of the recess 3 in the area of the bevel 12.
  • At all contact surfaces regardless of the order of chain links A and B in the course of the saw chain, i.e. regardless of the direction of travel of the saw chain along the double arrow L to the left or to the right, only pressure loads occur.
  • Elastic deformations such as bending the hook 2, the shoulder 1 or the horn 13 prevent the respective counter surfaces, all forces being absorbed as pressure.
  • chain links A and B form a unit that is rigid against bending at its running level; within the running plane, however, kinking movements of the chain links A and B relative to one another are possible.
  • the chain link A By kinking the chain link beyond a certain position, the chain link A can be suspended from the chain link B and thus one or more chain links can be removed from the chain linkage without the use of any tools.
  • a lateral displacement of the chain links A and B against one another transversely to their running plane is counteracted by the nesting of each core part K between the two side parts S and S ', which can be seen in particular in FIGS. 1 and 2.
  • the side parts S and S ' which are identical to one another, have a shape that differs from the core parts K enclosed by them; however, just like the core parts K, they can be hooked into one another to form a closed structure which is rigid at right angles to the running plane, but which can be bent within the running plane.
  • each of the side parts S and S ' has a locking nose 7 directed downwards at its front edge on, which corresponds in shape to a recess 8 provided at the rear edge, so that the locking lugs 7 of the side parts S and S 'of the subsequent chain link B can be hooked into the recesses 8 in the side parts S and S' of the preceding chain link A.
  • each of the side parts S and S ' has a downwardly projecting guide fin 6, which serves as a guide element for guiding the saw chain on its deflection wheels.
  • the chain links A and B are provided with cutting teeth 9 that are periodically alternating in the course of the saw chain.
  • the sawing work is divided into two different types of teeth, which take effect one after the other. 1 there are two cutting teeth 9 and a clearing tooth 10 on each of the chain links A and B;
  • the center of the crescent arch forms the highest point of the contour and travels at 90 ° against the direction of the saw through the material to be cut. Its elasticity means that the material to be cut still presses against the cutting edge even after the maximum incision depth has been reached.
  • the steady and symmetrical shape of the cutting edge means that it does not become one abrupt entry or exit from the material to be cut and each piece of the cutting edge is supported in its vicinity, which results in smooth cut surfaces on the material to be cut and high stability of the saw.
  • the clearing teeth 10 have two mutually parallel cutting edges in the example shown, which run at 90 ° against the chain running direction L. They work analogously to planer knives. Instead of the design of the cutting edges shown, a symmetrical arrow or notch shape is also possible for the cutting edges, and a cutting edge course that is oblique to the chain running direction L can also be provided.
  • Both the cutting teeth 9 and the clearing teeth 10 can be interchangeably connected to the chain links A and B.
  • the invention can be described as a saw with a large number of teeth, which follow one another on a common carrier with a mutual spacing along its direction of travel and in some cases have differently shaped working edges.
  • At least two types of teeth are provided to achieve smooth separating surfaces on the material to be sawn and to reduce the driving force to be used for the sawing operation, which differ from one type to the other in the shape and / or position of their cutting edges.
  • the teeth of one type are preferably designed as cutting teeth and the teeth of another type as clearing teeth, which alternate periodically along the carrier.
  • individual elements which can be pivoted relative to one another can also be used for flexible elements such as bands or cords, but also more rigid bodies such as more or less solid saw blades or circular saw discs.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Holo Graphy (AREA)
  • Fats And Perfumes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Dry Shavers And Clippers (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Enzymes And Modification Thereof (AREA)
  • Chain Conveyers (AREA)
EP97101210A 1992-11-09 1993-11-09 Outil de sciage, en particulier chaíne de sciage Expired - Lifetime EP0773084B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4237781 1992-11-09
DE4237781A DE4237781C2 (de) 1992-11-09 1992-11-09 Sägekette für Kettensägen
EP93118157A EP0605770B1 (fr) 1992-11-09 1993-11-09 Chaîne de sciage pour scies à chaînes

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP93118157A Division EP0605770B1 (fr) 1992-11-09 1993-11-09 Chaîne de sciage pour scies à chaînes
EP93118157.2 Division 1993-11-09

Publications (3)

Publication Number Publication Date
EP0773084A2 true EP0773084A2 (fr) 1997-05-14
EP0773084A3 EP0773084A3 (fr) 1998-02-04
EP0773084B1 EP0773084B1 (fr) 2002-09-18

Family

ID=6472436

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97101210A Expired - Lifetime EP0773084B1 (fr) 1992-11-09 1993-11-09 Outil de sciage, en particulier chaíne de sciage
EP93118157A Expired - Lifetime EP0605770B1 (fr) 1992-11-09 1993-11-09 Chaîne de sciage pour scies à chaînes

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93118157A Expired - Lifetime EP0605770B1 (fr) 1992-11-09 1993-11-09 Chaîne de sciage pour scies à chaînes

Country Status (8)

Country Link
US (1) US5988035A (fr)
EP (2) EP0773084B1 (fr)
AT (2) ATE224252T1 (fr)
BR (1) BR9305717A (fr)
CA (1) CA2127708A1 (fr)
DE (3) DE4237781C2 (fr)
DK (1) DK0773084T3 (fr)
WO (1) WO1994011166A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305702B (en) * 1995-09-29 1999-06-02 Norman Shekleton A pipe connector
DE29815228U1 (de) 1998-08-25 1998-11-12 Trumpf GmbH + Co., 71254 Ditzingen Trennvorrichtung zum Bearbeiten von Sandwichplatten
DE29915852U1 (de) 1999-09-09 1999-12-23 Trumpf GmbH & Co., 71254 Ditzingen Sägekette für ein Werkzeug zum Trennen von Sandwichplatten
DE20202519U1 (de) * 2002-02-18 2003-07-03 Trumpf Grüsch AG, Grüsch Sägekette mit Tiefenbegrenzung
SE532991C2 (sv) * 2008-09-17 2010-06-01 Komatsu Forest Ab Förfarande och anordning vid sågkedja
US20110072944A1 (en) * 2009-09-29 2011-03-31 Jeffrey Eggers Flexible linked cutting system
DE102012004049A1 (de) * 2012-03-02 2013-09-05 Robert Bosch Gmbh Verfahren zur Herstellung von zumindest einem Schneidstrangsegment eines Schneidstrangs einer Werkzeugmaschinentrennvorrichtung
DE102012004051A1 (de) * 2012-03-02 2013-09-05 Robert Bosch Gmbh Werkzeugmaschinentrennvorrichtung
DE102012215460A1 (de) * 2012-08-31 2014-03-06 Robert Bosch Gmbh Schneidstrangsegment
DE102013200903A1 (de) * 2013-01-22 2014-07-24 Robert Bosch Gmbh Schneidstrangsegment
EP3177443B1 (fr) * 2014-08-06 2018-09-19 Fantini Sud S.p.A. Chaîne pour machine à scier pour couper des pierres d'ornement, conçue pour empêcher l'entrée d'impuretés entre la liaison interne et la liaison externe de la chaîne
US10138685B1 (en) 2015-12-18 2018-11-27 Jeffrey Eggers Drilling system with teeth driven in opposite directions
DE102019106459A1 (de) 2019-03-13 2020-09-17 Avova Gmbh Höhenverstelleinrichung einer Kopfstütze eines Kindersitzes
WO2025014696A1 (fr) * 2023-07-11 2025-01-16 Chain Orthopedics, Llc Dispositifs dotés de chaînes de coupe et de configurations de liaison

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US614003A (en) * 1898-11-08 Band-saw
DE582466C (de) * 1933-08-15 Stihl Andreas Saegekette mit Schneidzaehnen und dazwischen angeordneten Raeumzaehnen
CA855018A (en) * 1970-11-03 W. Oehrli John Saw chains and sharpeners
US1178362A (en) * 1915-05-07 1916-04-04 Rode Nicolay Wall Saw.
US1412315A (en) * 1920-11-24 1922-04-11 Peters Franklin Ford Saw
US1483387A (en) * 1922-05-16 1924-02-12 Serin Maurice Camille Henri Chain-saw machine
US1634643A (en) * 1924-02-07 1927-07-05 Samuel J Bens Interlocking link
US1671295A (en) * 1926-01-26 1928-05-29 Kirby Ralph Endless crosscut saw
US1652295A (en) * 1926-11-16 1927-12-13 Chain Saw Corp Chain saw
US2348612A (en) * 1941-02-20 1944-05-09 William H Deacon Power saw
GB549945A (en) * 1941-10-30 1942-12-15 Mellor Bromley & Co Ltd Improvements in or relating to cutting chains for chain saws
US2435892A (en) * 1944-01-07 1948-02-10 Mall Tool Company Cutting chain
CH287499A (fr) * 1947-07-03 1952-12-15 Sonapar Societe De Participati Machine pour débiter une matière pierreuse.
US2583243A (en) * 1950-04-03 1952-01-22 Tweedie Charles James Chain saw
US3298406A (en) * 1964-05-15 1967-01-17 Herbert V Erickson Chain saw chain
US3447577A (en) * 1966-06-13 1969-06-03 Stanley Works Circular trim saw
DE1600247A1 (de) * 1967-01-17 1970-03-05 Amsted Ind Inc Kraftuebertragungskette
CH462522A (de) * 1967-10-09 1968-09-15 Schmid Hans Schneidekette mit Messerlaschen und Verwendung derselben
US3692073A (en) * 1970-09-15 1972-09-19 Carl W Easterwood Drag saw
US3945289A (en) * 1975-04-14 1976-03-23 Emilio Retana Rodriguez Saw tooth
US3945288A (en) * 1975-04-25 1976-03-23 Textron Inc. Saw chain
DE2758380A1 (de) * 1977-12-28 1979-07-12 Hamer R Geerd Dr Med Kette
US4882901A (en) * 1980-11-26 1989-11-28 The Laitram Corporation Detachable link chain
SE8901038L (sv) * 1989-03-23 1990-09-24 Ernst Tallberg Handverktyg
EP0423501B1 (fr) * 1989-09-22 1995-12-13 Mitsubishi Materials Corporation Chaîne à couper
US5226404A (en) * 1989-09-22 1993-07-13 Mitsubishi Metal Corporation Cutting apparatus
US5209216A (en) * 1989-09-22 1993-05-11 Mitsubishi Metal Corporation Chain cutter
US5029501A (en) * 1990-01-10 1991-07-09 Smith Wayne A Roughing cutter for saw chain
DE4237762C2 (de) * 1992-11-09 1997-12-18 Elektromechanik Aach Gmbh Sägewerkzeug

Also Published As

Publication number Publication date
EP0605770B1 (fr) 1997-07-30
EP0605770A2 (fr) 1994-07-13
BR9305717A (pt) 1996-12-31
DK0773084T3 (da) 2003-01-20
ATE156057T1 (de) 1997-08-15
EP0773084A3 (fr) 1998-02-04
EP0605770A3 (en) 1994-08-24
DE4237781C2 (de) 1995-08-10
WO1994011166A1 (fr) 1994-05-26
ATE224252T1 (de) 2002-10-15
DE59310303D1 (de) 2002-10-24
CA2127708A1 (fr) 1994-05-26
US5988035A (en) 1999-11-23
DE59307018D1 (de) 1997-09-04
EP0773084B1 (fr) 2002-09-18
DE4237781A1 (de) 1994-05-11

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