EP0592389A2 - Chaîne de sciage pour scies à chaînes motorisées - Google Patents

Chaîne de sciage pour scies à chaînes motorisées Download PDF

Info

Publication number
EP0592389A2
EP0592389A2 EP93890193A EP93890193A EP0592389A2 EP 0592389 A2 EP0592389 A2 EP 0592389A2 EP 93890193 A EP93890193 A EP 93890193A EP 93890193 A EP93890193 A EP 93890193A EP 0592389 A2 EP0592389 A2 EP 0592389A2
Authority
EP
European Patent Office
Prior art keywords
cutting
links
chain
saws
edge
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
EP93890193A
Other languages
German (de)
English (en)
Other versions
EP0592389A3 (en
EP0592389B1 (fr
Inventor
Gerhard Dkfm. Rosenkranz
Dieter Dipl.-Ing. Döberl
Oskar Dipl.-Ing. Dr. Pacher
Erich Ing. Friesenbichler
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.)
Boehler Ybbstalwerke GmbH
Original Assignee
Boehler Ybbstalwerke GmbH
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 Boehler Ybbstalwerke GmbH filed Critical Boehler Ybbstalwerke GmbH
Publication of EP0592389A2 publication Critical patent/EP0592389A2/fr
Publication of EP0592389A3 publication Critical patent/EP0592389A3/de
Application granted granted Critical
Publication of EP0592389B1 publication Critical patent/EP0592389B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a saw chain for motor chain saws, in particular emergency saws, consisting essentially of drag links, possibly intermediate links and cutting links with counter links, which links are movably connected to one another by means of bolts or rivets.
  • the invention relates to an embodiment of the cutting members, preferably for emergency saws.
  • Motor chain saws are wood saws that have a closed link chain with cutting edges as cutting or separating means, which rotates in an elongated guide arm.
  • the saw chain is driven by an explosion or electric motor via a pinion, which is arranged on one side of the guide, serves to deflect the chain and cooperates with its drag links in a force-transmitting manner.
  • the chain is supported and deflected by means of a deflection roller.
  • Such saws can be used for rough cuts in wood, e.g. can be used to advantage when felling and delimbing trees or doing some carpentry.
  • the cutting elements are alternately left-hand and right-hand cutting links with a cutting head which is round on one side and an acute-angled, substantially C-shaped in plan view or reversely arranged cutting edge.
  • This shape of the cutting edge is particularly suitable for machining or cutting wood, and the cutting edges can be resharpened in a simple manner, if necessary manually, by means of round files by removing material from the inner cutting edge flank of the cutting links.
  • Resharpening of the cutting links is particularly necessary if the cut is impure in wood, through soil or sand particles, for example adhering to a trunk surface, or through hard parts, for example nails or wires in or on beams or the like, wear and / or a bending or at least local deformation of the cutting edges has occurred.
  • the invention seeks to remedy this and sets itself the task of specifying a saw chain with sharpenable cutting links, which has a significantly increased service life even when the cut is impure and which, when used as an emergency saw, provides high cutting performance.
  • At least one area having the cutting edge (s), a so-called cutting head of the cutting members, is formed from high-speed steel.
  • the advantages achieved by the invention are essentially to be seen in the fact that in high-speed steel according to the DIN steel-iron list, number classes 32 and 33, high hardness and wear resistance and sufficiently high toughness can be set by heat treatment, so that on the one hand even with impure Cut an acute-angled edge shape of the cutting edge is retained for a long time and, on the other hand, no cutting edge parts or cutting heads of the cutting elements are broken off or broken off.
  • the cutting heads were tempered or hardened to a high hardness of up to 62 HRC, breaking of the cutting edge regions expected by the person skilled in the art, in particular because of the interrupted cutting of the teeth, was not found.
  • a particularly simple production can be achieved if the cutting elements are made of high-speed steel.
  • a Forming and, if necessary, punching the raw material to form the shape of the cutting element can advantageously take place in a temperature range above room temperature, in which, however, the steel still has an alpha microstructure.
  • the area or cutting head having the cutting edge (s) is made of high-speed steel, which area has a support or support surface and the recesses for the connecting means with the intermediate links, the drag link and the counter link having base part made of tough steel by means of welding, in particular electron beam or laser welding, a particularly economical and safe embodiment of the cutting members can be created.
  • welding joints represent weak points, so that there was a prejudice regarding a risk of breakage in the weld seam area of the cutting element. It was completely surprising that welds carried out by means of electron lasers or plasma beams showed no tendency to break in the welding zone of the cutting member.
  • the further object of the invention to provide an emergency saw that is advantageous, in particular with regard to a high cutting performance or a high cutting speed at low contact pressures, is achieved in that a cutting head (s) of the cutting elements having the cutting edge (s) in the pulling or longitudinal direction the chain has at least two essentially flat outer surfaces forming a longitudinal edge and the longitudinal edge and the cutting edge (s) form a cutting or tear corner.
  • the cutting or tearing corners according to the invention achieve that of the material to be separated when Saw feed also removes chips by tearing out material particles, which means that a significantly higher cutting performance can be achieved.
  • the end face of the cutting head of the cutting members which has the cutting edge (s) and the cutting or tear corner, is of flat design.
  • sharp cutting edges can be newly formed by means of a thin grinding wheel rotating transversely to the longitudinal direction of the cutting members when they are positioned against the end face of the cutting heads by means of a low material removal.
  • Fig. 1 a part of a saw chain is shown, in which drag links 1 are each connected with an intermediate link 2 in a bilateral arrangement of the parts and a cutting member 3 with counter member 4 by rivets 5.
  • the cutting members 3 alternately have cutting heads 31 with cutting edges 32 formed on the left and right.
  • Fig. 2 shows the part of the saw chain of Fig. 1 in plan view.
  • Each cutting head 31 of the cutting members 3 extends in width across the center of the saw chain, so that seen from a part to be separated in the cutting area overlapping in the cutting direction, alternating between the left-hand and right-hand cutting corners 39 of the cutting members 3, the cutting edges 32 have a cutting effect.
  • the cutting edges 32 can be resharpened in a simple manner by removing the end face 390 of the cutting head 31, for example by means of a grinding wheel. If the surface 37, 38 of the cutting head 31 is flat or the cutting edge 32 is straight in the case of a cutting member 3, a sharp-edged cutting corner 39 is formed.
  • FIG. 3 a to d, cross sections AB of embodiments of cutting members 3 (as shown in FIG. 2) are shown, wherein the cutting members 3 are made of bimetal with a cutting head 31 made of high-speed steel and a base part 33, one of which Weld 35 is an inseparable connection.
  • the cutting members 3 can also be made in one piece from high-speed steel.
  • a cutting head 31 is delimited in the longitudinal direction of the cutting member 3 by an essentially flat head outer surface 37 and a flat head side surface 38 forming a clearance angle, which planes 37, 38 form a longitudinal head edge 36 which has a cutting or tear corner on or with the end face 390 39 results.
  • the contact pressure during the cutting action on the outer head surface 37 is passed on from the support or support surface 34 of the cutting member or the cutting members 3 to the guide arm of the chainsaw.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
EP19930890193 1992-10-08 1993-10-07 Chaîne de sciage pour scies à chaînes motorisées Expired - Lifetime EP0592389B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1987/92 1992-10-08
AT0198792A AT397366B (de) 1992-10-08 1992-10-08 Sägeketten für motorkettensägen

Publications (3)

Publication Number Publication Date
EP0592389A2 true EP0592389A2 (fr) 1994-04-13
EP0592389A3 EP0592389A3 (en) 1994-06-22
EP0592389B1 EP0592389B1 (fr) 1996-02-21

Family

ID=3525399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930890193 Expired - Lifetime EP0592389B1 (fr) 1992-10-08 1993-10-07 Chaîne de sciage pour scies à chaînes motorisées

Country Status (3)

Country Link
EP (1) EP0592389B1 (fr)
AT (1) AT397366B (fr)
DE (1) DE59301676D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019103024U1 (de) 2019-05-28 2019-07-04 Voestalpine Precision Strip Gmbh Schneidglied für eine Sägekette
CN111267183A (zh) * 2020-04-02 2020-06-12 杭州朗格锯链有限公司 轻型锂电池专用锯链
EP3744458A1 (fr) 2019-05-28 2020-12-02 Voestalpine Precision Strip GmbH Élément de coupe pour une chaîne à scier et son procédé de fabrication
CN115648353A (zh) * 2022-09-04 2023-01-31 浙江卡贝士机械有限公司 一种锯链的切割构件

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2542929A1 (de) * 1975-09-26 1977-03-31 Fagersta Ab Verfahren zur herstellung eines mehrmetallbandes und nach diesem verfahren hergestelltes metallband
US4378719A (en) * 1979-01-22 1983-04-05 Burgess Vernon J Saw chain connector
CA1160543A (fr) * 1981-10-23 1984-01-17 Campbell W. Jones Accessoire a mortaiser pour scie radiale
DE3640871A1 (de) * 1986-11-29 1988-06-09 Stihl Maschf Andreas Saegekette fuer eine motorkettensaege
DE3804954C2 (de) * 1988-02-18 1997-04-03 Stihl Maschf Andreas Sägekette für Motorsägen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019103024U1 (de) 2019-05-28 2019-07-04 Voestalpine Precision Strip Gmbh Schneidglied für eine Sägekette
EP3744458A1 (fr) 2019-05-28 2020-12-02 Voestalpine Precision Strip GmbH Élément de coupe pour une chaîne à scier et son procédé de fabrication
CN113924182A (zh) * 2019-05-28 2022-01-11 奥钢联精密带钢有限公司 用于锯链的切割部件及其制造方法
CN111267183A (zh) * 2020-04-02 2020-06-12 杭州朗格锯链有限公司 轻型锂电池专用锯链
CN115648353A (zh) * 2022-09-04 2023-01-31 浙江卡贝士机械有限公司 一种锯链的切割构件
CN115648353B (zh) * 2022-09-04 2024-01-02 浙江朝鸿机械有限公司 一种锯链的切割构件

Also Published As

Publication number Publication date
AT397366B (de) 1994-03-25
EP0592389A3 (en) 1994-06-22
DE59301676D1 (de) 1996-03-28
ATA198792A (de) 1993-08-15
EP0592389B1 (fr) 1996-02-21

Similar Documents

Publication Publication Date Title
DE3300791C2 (de) Sägeblatt
DE3002138C2 (fr)
AT500151B1 (de) Vormaterial für sägeblätter oder sägebänder
AT402482B (de) Stanzmesser für stanzwerkzeuge mit gekrümmtem schnitt
DE3433279A1 (de) Saegeblatt
DE69102145T2 (de) Schneidzahnglied für Motorkettensäge.
EP3976302B1 (fr) Élément de coupe pour une chaîne à scier et son procédé de fabrication
AT398401B (de) Wendemesser, insbesondere wendehobelmesser
EP0592389B1 (fr) Chaîne de sciage pour scies à chaînes motorisées
EP1713604A2 (fr) Insert de coupe et outil pour s'en servir
DE102010011837A1 (de) Verschleißfestes Bimetall-Sägeelement und dessen Herstellungsverfahren
EP1329151A1 (fr) Taille-haie
DE4127581A1 (de) Rotorklinge fuer maehwerke
DE2221479B2 (fr)
EP0009512B1 (fr) Lame de scie pour couper du bois ou des matériaux similaires
DE3017519C2 (fr)
DE4121021A1 (de) Verfahren und vorrichtung zum trennen oder schlitzen eines starren schnittguts
EP0643635B1 (fr) Contre-lame
EP3585552A1 (fr) Lame de scie alternative pour une machine-outil
DE3724913A1 (de) Verfahren zur herstellung eines diamant-bandsaegeblattes und nach dem verfahren hergestelltes diamant-bandsaegeblatt
DE8532717U1 (de) Scheibenförmiges Werkzeug zum Trennschneiden und Formatbearbeiten
EP1083031A2 (fr) Chaíne de sciage pour outil à couper des panneaux sandwich
DE19844016A1 (de) Schneidgarnitur für eine Motorkettensäge
EP0803334B1 (fr) Couteau rotatif
DE1453049C (de) Schneidglied fur eine Sagekette

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19931020

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT SE

17Q First examination report despatched

Effective date: 19950804

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19960221

Ref country code: GB

Effective date: 19960221

Ref country code: FR

Effective date: 19960221

REF Corresponds to:

Ref document number: 59301676

Country of ref document: DE

Date of ref document: 19960328

EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19960221

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19990920

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990927

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20001030

EUG Se: european patent has lapsed

Ref document number: 93890193.1

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010703