EP0132259B1 - Sägeblatt für die bearbeitung von holz und andern werkstoffen - Google Patents

Sägeblatt für die bearbeitung von holz und andern werkstoffen Download PDF

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Publication number
EP0132259B1
EP0132259B1 EP84900378A EP84900378A EP0132259B1 EP 0132259 B1 EP0132259 B1 EP 0132259B1 EP 84900378 A EP84900378 A EP 84900378A EP 84900378 A EP84900378 A EP 84900378A EP 0132259 B1 EP0132259 B1 EP 0132259B1
Authority
EP
European Patent Office
Prior art keywords
tooth
saw blade
hard metal
teeth
angle
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.)
Expired
Application number
EP84900378A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0132259A1 (de
Inventor
Herbert Erhardt
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.)
TECNO ZUERICH AG
Original Assignee
Tecno Zuerich AG
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 Tecno Zuerich AG filed Critical Tecno Zuerich AG
Publication of EP0132259A1 publication Critical patent/EP0132259A1/de
Application granted granted Critical
Publication of EP0132259B1 publication Critical patent/EP0132259B1/de
Expired 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
    • B27B33/02—Structural design of saw blades or saw teeth
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9319—Toothed blade or tooth 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
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9319—Toothed blade or tooth therefor
    • Y10T83/9326—Plural separable sections
    • Y10T83/9329—Tooth separable from blade
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9319—Toothed blade or tooth therefor
    • Y10T83/9367—Teeth having cutting edge perpendicular to blade surface

Definitions

  • the invention relates to a circular saw blade for the machining of wood, the teeth of which are provided with a cast or sintered hard metal insert, the teeth each having a cutting edge and a rounded tooth base, the tooth face - starting from the tooth tip - a cutting part with a cutting angle (8) of less than 60 ° but more than 40 °, the adjoining arch part is undercut and merges into the tooth base.
  • DE-C-815840 shows a wood saw blade with interchangeable teeth.
  • the teeth with their shanks are each designed as a spring ring with a cutting edge, which is inserted into a circular opening of the saw blade. Such attachment of cutting tips has proven to be insufficient for highly stressed circular saw blades.
  • the object of the present invention is to provide a circular saw blade with hard metal inserts with which a cutting performance which is substantially higher than that of conventional saw blades is possible, the hard metal inserts being simple to manufacture and securely attachable to the saw blade body.
  • a hard metal insert is followed by a curved part of the arch, which passes seamlessly into the circular tooth base and forms part of the undercut, and wherein the tooth base and the curved part of the hard metal insert are circular, have a common circle center, the hard metal Inserts essentially each have the shape of a parallelogram, the short side of the parallelogram facing away from the cutting tip forming the concave arc part of the hard metal insert and the longer side of the parallelogram forming the tooth face, and a straight line applied to the tooth face from the undercut arc part of a circular section separates, whose central angle ( ⁇ ) is 60-110 °.
  • the figure shows a section of a circular saw blade in which the teeth are fitted with hard metal inserts.
  • the circular saw blade according to the figure has a diameter in the order of about 50-1 500 mm and is preferably used for processing hard or softwood.
  • the teeth of such a circular saw blade 1 have a tooth shape that differs from the conventional design.
  • the tooth face 2 of each tooth merges into an adjoining arcuate part 3, which continues into a rounded tooth base 4 and then merges into a tooth back 5, a tooth gap being formed.
  • the arcuate part 3 is undercut compared to an imaginary straight continuation F of the cutting part 2 and forms together with the tooth base 5 a circular arc part 3 with the radius r.
  • the center m of this radius 3 is at least approximately on a radius R applied to the tooth tip 6 with respect to the center of the circular saw blade.
  • the length L of this tooth face 2 corresponds to approximately 2/3 of the tooth or cutting width.
  • the length L of the cutting part 2 is increased by regrinding and can then correspond approximately to twice the tooth thickness.
  • the cutting width for circular saw diameters of 200 is approximately 3 mm, for 500 mm diameter approximately 4 mm and is graded accordingly for intermediate sizes.
  • the tooth depth H is approximately in the order of half the tooth pitch t.
  • the central angle y of the chord of the curved part 3a, 3 formed by the straight line F, which separates a circular section, is 60-110 °, preferably approximately 80 °.
  • the teeth are equipped with hard metal, sintered, soldered hard metal inserts 12 being used. These are essentially in the form of a parallelogram, but one short side is concave.
  • the length L 1 measured over the tips is approximately 9-14 mm and the distance measured between the long parallel surfaces is approximately 1/4 of the length.
  • the length L of the tooth face is about 1/3 to 3/5 of the tooth depth H. For circular saw diameters of 50-150 mm, the tooth depth is about 10-12 mm, above that about 12-22 mm as a rule.
  • the center point m of the arcuate part 3a, 3 forming a circular section lies approximately on a radius R 1 ' which is placed from the center of the circular saw at the inner end of the cutting part. This corresponds to point 16 at the transition between the straight tooth face 2 and the curved arch part 3a of the hard metal insert.
  • the radius r corresponds to approximately 1/4 of the tooth depth H.
  • the depth h of the undercut of the curved part 3a and 3 is approximately of the order of 3/8 r.
  • the undercut 3a and 3 can also be expressed as the size of the central angle ⁇ .
  • the central angle -y of the chord, which cuts the straight line F out of the curved part 3a, 3, is 60-110 °, preferably about 90 °.
  • the circular arc part 3a falling on the area of the hard metal insert 12 corresponds approximately to half the central angle ⁇ and thus forms part of the undercut.
  • the clearance angle a is 5-15 °
  • the rake angle ⁇ is approximately 38-42 °
  • the wedge angle ⁇ is 30-55 °, preferably approximately 35-47 °. If the clearance angle a is a minimum of 5 °, the wedge angle ⁇ should be a minimum of 40 ° and a maximum of 55 °; if, on the other hand, the clearance angle ⁇ is a maximum of 15 °, the wedge angle ⁇ should be a minimum of 30 ° and a maximum of 45 °. Intermediate sizes are graded accordingly.
  • a straight line applied to the back 15 meets the point 16 of the next tooth approximately at the transition between the tooth face 2 and the arch part 3.
  • the tooth gap edge 5 connected to the back 15 forms an acute angle to the straight line F, so that the separated chips have sufficient space, in order to be able to emerge freely from the chip space widening outwards.
  • the arch part 3 and the arched tooth base 4 together form more than a semicircle, preferably an angle of approximately 120 °.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Harvester Elements (AREA)
  • Power Steering Mechanism (AREA)
  • Rotary Pumps (AREA)
  • Sawing (AREA)
  • Surgical Instruments (AREA)
  • Scissors And Nippers (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
EP84900378A 1983-01-13 1984-01-12 Sägeblatt für die bearbeitung von holz und andern werkstoffen Expired EP0132259B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH168/83A CH660326A5 (de) 1983-01-13 1983-01-13 Saegeblatt fuer die bearbeitung von holz oder aehnlichen werkstoffen.

Publications (2)

Publication Number Publication Date
EP0132259A1 EP0132259A1 (de) 1985-01-30
EP0132259B1 true EP0132259B1 (de) 1987-07-08

Family

ID=4180804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900378A Expired EP0132259B1 (de) 1983-01-13 1984-01-12 Sägeblatt für die bearbeitung von holz und andern werkstoffen

Country Status (9)

Country Link
US (1) US4587876A (da)
EP (1) EP0132259B1 (da)
AT (1) ATE28140T1 (da)
AU (1) AU2349384A (da)
CH (1) CH660326A5 (da)
DE (1) DE3464550D1 (da)
DK (1) DK434384A (da)
IT (1) IT1173028B (da)
WO (1) WO1984002676A1 (da)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570317B1 (fr) * 1984-09-20 1994-07-01 Mazelin Michel Lame circulaire a denture de type " gouge "
FR2594376B1 (fr) * 1986-02-20 1994-07-08 Mazelin Michel Lame de scie circulaire
GR1002237B (en) 1991-09-27 1996-04-19 Mcneil Ppc Inc Absorbent article having pre-formed gaskets.
US5351595A (en) * 1991-12-20 1994-10-04 Vermont American Corporation Thin kerf circular saw blade
US5261306A (en) * 1992-02-28 1993-11-16 Wood Technology, Inc. Circular saw blade for tree cutting and bunching vehicles
US6167792B1 (en) * 1995-03-23 2001-01-02 American Saw & Mfg. Company Tooth form for a saw blade
US6389945B1 (en) * 1997-08-22 2002-05-21 George G. Gaydos Saw blade for forming curved stock
DE19739074B4 (de) * 1997-09-08 2005-07-07 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG Sägeblatt und Verfahren zu seiner Herstellung
FI102053B1 (fi) * 1997-11-25 1998-10-15 Hackman Ttt Oy Ab Menetelmä ja sovitelma teräpalojen kiinnittämiseksi sahauksessa käytettävän terän terärunkoon
US6883412B1 (en) * 1998-12-29 2005-04-26 Sheffield Saw & Tool Co., Inc. Method of fabricating circular saw blades with cutting teeth composed of ultrahard tool material
EP1043104A3 (en) * 1999-04-08 2003-06-04 Kapman AB Band saw blade for soft and tough metal
US20040025658A1 (en) * 1999-12-10 2004-02-12 Fisher George F. Polymer cutting apparatus and method
DE10124687B4 (de) * 2001-05-18 2006-01-12 Leitz Gmbh & Co. Kg Kreissägeblatt
JP2004122300A (ja) * 2002-10-03 2004-04-22 Tenryu Saw Mfg Co Ltd 回転鋸
US20040255740A1 (en) * 2003-06-23 2004-12-23 Troyer Daniel C. Sawdust clearing band saw blade
US7225714B2 (en) * 2004-12-22 2007-06-05 Black & Decker Inc. Tooth form design for reciprocating saw blade
DE102004020256A1 (de) * 2004-04-26 2005-11-17 Gramatec Gmbh Schneidmesser für Rotationsschneidanlagen
US7634897B2 (en) * 2005-11-16 2009-12-22 Les Equipments Prenbec Inc. Rotary cutting machine with replaceable cutting teeth
CA2568404C (en) * 2005-11-16 2012-05-22 Prenbec Equipment Inc. Reversible cutting tooth
DE102006034010A1 (de) * 2006-05-20 2007-12-06 Ake Knebel Gmbh & Co. Sägezahn mit Hartschicht
US8826790B2 (en) * 2008-07-09 2014-09-09 The L.S. Starrett Company Saw blade
EP3187292B1 (en) 2010-04-22 2021-02-17 Milwaukee Electric Tool Corporation Saw blade
US10189099B2 (en) 2010-04-22 2019-01-29 Milwaukee Electric Tool Corporation Saw Blade
US9248518B2 (en) 2010-06-30 2016-02-02 Irwin Industrial Tool Company Saw blade tooth form for abusive cutting applications
DE202010008981U1 (de) * 2010-11-09 2012-02-10 Franz Schaupp Verbundkreissägeblatt
USD841417S1 (en) 2011-04-22 2019-02-26 Milwaukee Electric Tool Corporation Saw blade
US9168599B2 (en) * 2011-11-17 2015-10-27 Les Equipements Prenbec Inc. Saw disk with improved chip discharge
DK2859138T3 (da) 2012-06-08 2017-02-27 Onderzoekscentrum Voor Aanwending Van Staal N V Fremgangsmåde til fremstilling af en metalbelægning
JP6296283B2 (ja) * 2014-02-20 2018-03-20 株式会社不二越 ブローチ
CN104400838A (zh) * 2014-11-21 2015-03-11 吉林大学 一种仿生圆盘锯
CN120921474A (zh) 2017-05-16 2025-11-11 米沃奇电动工具公司 锯片
US10537951B2 (en) 2017-08-16 2020-01-21 Black & Decker Inc. Band saw blade for cutting structural workpieces
KR102147116B1 (ko) * 2018-11-05 2020-08-24 티앤씨샤크 주식회사 홀 커터
US11440111B2 (en) * 2020-08-17 2022-09-13 Bmic Llc Method of using a blade configured to reduce residual foam dust

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE15038E (en) * 1921-02-15 Separable-tooth saw
GB266614A (en) * 1926-08-27 1927-03-03 Henry Snowden Rowell Improvements in the lubrication of motor vehicles and fluid pressure engines
GB590282A (en) * 1945-01-25 1947-07-14 John Raymond Foyster Improvements in saws for cutting timber
DE815840C (de) * 1950-02-09 1951-10-04 Friedrich Emde Holzsaegeblatt mit auswechselbaren Zaehnen
FR1061058A (fr) * 1952-07-28 1954-04-08 Scie à denture spéciale
FR1403863A (fr) * 1964-05-15 1965-06-25 Arc Procédé d'avoyage des scies circulaires à plaquettes rapportées
US3288180A (en) * 1964-05-18 1966-11-29 Clarence F Mclean Inserted tooth saw
EP0040421A2 (en) * 1980-05-19 1981-11-25 LaVelle, Donald R. Circular rip saw blade

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US15038A (en) * 1856-06-03 Railroad-cab
US481201A (en) * 1892-08-23 Daniel c
US464855A (en) * 1891-12-08 Circular saw
US239098A (en) * 1881-03-22 Edwot a
GB226614A (en) * 1923-09-26 1924-12-29 Edgar Allen & Company Ltd Improvements in or relating to circular saws, milling cutters and the like
US3362446A (en) * 1965-10-18 1968-01-09 Potomak Andrew Circular saws
US4292871A (en) * 1979-02-01 1981-10-06 The L. S. Starrett Company Welded edge band saw tooth geometry

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE15038E (en) * 1921-02-15 Separable-tooth saw
GB266614A (en) * 1926-08-27 1927-03-03 Henry Snowden Rowell Improvements in the lubrication of motor vehicles and fluid pressure engines
GB590282A (en) * 1945-01-25 1947-07-14 John Raymond Foyster Improvements in saws for cutting timber
DE815840C (de) * 1950-02-09 1951-10-04 Friedrich Emde Holzsaegeblatt mit auswechselbaren Zaehnen
FR1061058A (fr) * 1952-07-28 1954-04-08 Scie à denture spéciale
FR1403863A (fr) * 1964-05-15 1965-06-25 Arc Procédé d'avoyage des scies circulaires à plaquettes rapportées
US3288180A (en) * 1964-05-18 1966-11-29 Clarence F Mclean Inserted tooth saw
EP0040421A2 (en) * 1980-05-19 1981-11-25 LaVelle, Donald R. Circular rip saw blade

Also Published As

Publication number Publication date
WO1984002676A1 (fr) 1984-07-19
EP0132259A1 (de) 1985-01-30
DK434384D0 (da) 1984-09-12
ATE28140T1 (de) 1987-07-15
DK434384A (da) 1984-09-12
US4587876A (en) 1986-05-13
DE3464550D1 (en) 1987-08-13
CH660326A5 (de) 1987-04-15
IT8419156A0 (it) 1984-01-13
AU2349384A (en) 1984-08-02
IT1173028B (it) 1987-06-18

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