EP0009512B1 - Lame de scie pour couper du bois ou des matériaux similaires - Google Patents

Lame de scie pour couper du bois ou des matériaux similaires Download PDF

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Publication number
EP0009512B1
EP0009512B1 EP78101122A EP78101122A EP0009512B1 EP 0009512 B1 EP0009512 B1 EP 0009512B1 EP 78101122 A EP78101122 A EP 78101122A EP 78101122 A EP78101122 A EP 78101122A EP 0009512 B1 EP0009512 B1 EP 0009512B1
Authority
EP
European Patent Office
Prior art keywords
saw blade
saw
tooth
gap
teeth
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
EP78101122A
Other languages
German (de)
English (en)
Other versions
EP0009512A1 (fr
Inventor
Gerd Höptner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0009512A1 publication Critical patent/EP0009512A1/fr
Application granted granted Critical
Publication of EP0009512B1 publication Critical patent/EP0009512B1/fr
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

Definitions

  • the invention relates to a saw blade for cutting wood and similar materials with trapezoidal saw teeth, the cutting edges of which are arranged in the longitudinal direction of the saw blade on the narrow outer trapezoidal side and each saw tooth is interrupted by a gap.
  • Such saw blades having knife-like cutting teeth are known from DE-U-76 16 080. They can be used to achieve very smooth cuts, but they still require a lot of effort, as they tend to get stuck in the wood or similar material to be cut.
  • a saw blade with M teeth is known, in which each M tooth is cut to one side to the center of the tooth and then to the other side and a notch is provided in the center of the tooth.
  • the trailing tooth half of an M tooth works as a cutting tooth with the leading tooth half of the next M tooth, which acts as a rake tooth.
  • M teeth With M teeth, however, only a very rough cut can be made.
  • a saw blade is also known which has an alternating sequence of pairs of pre-cutters and scrapers, a deep gap being provided between the teeth of each pair of pre-cutters, the steep flanks of which are ground in a cutting manner.
  • the pre-cutting teeth of a pair each end in tooth tips that are alternately set to one side and the other, only a rough cut is possible here.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of creating a saw blade for wood saws, with which a smooth cut can be achieved with good smoothness of the saw.
  • the saw blade 1 and 2 show a saw blade 1, which has pin holes 2 at both ends for clamping in the bracket of a hacksaw.
  • the saw blade 1 is provided with trapezoidal saw teeth 3 which have cutting edges 4 only on their narrow, trapezoidal outer side.
  • the cutting edge 4 is interrupted by a gap 5, the opening width of which is approximately equal to one third of the narrow sawtooth trapezoidal side (cutting edge 4).
  • the gaps are delimited by two parallel side walls 6, 7, which merge into an arcuate gap bottom 8 at the bottom.
  • the depth of the gaps 5 is approximately equal to half the tooth height h.
  • the angle ⁇ between the tooth flanks 9 and the cutting edge 4 is 110 ° in the exemplary embodiment shown, which brings optimal results for most applications.
  • flanks can be chosen steeper up to an angle ⁇ slightly larger than 90 °. In the case of soft material to be cut, it is advisable to incline the tooth flanks more gently, but an angle a of 150 ° should not be exceeded.
  • the teeth 3 are mutually crossed on both sides, as can be seen from FIG. 4.
  • the teeth are each provided with a sharpening edge 10 on their inner side.
  • Fig. 3 shows a modified embodiment in which the saw teeth 3 are provided with a gap 11 widening downwards.
  • the side walls 12, 13 of the gap 11 diverge downward and, moreover, run in a folding symmetry with respect to the center plane M of the tooth gap 11
  • the saw toothing according to the invention is not only suitable for the saw blades of hacksaws, but also for circular saws, band saws and other saws for working with wood or similar materials.
  • the saw teeth are hardened electro-inductively to increase their stability.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Knives (AREA)

Claims (4)

1. Lame de scie pour couper du bois et matériaux analogues, à dents de scie (3) trapé- zoîdales, dont les arêtes de coupe (4) sont disposées dans le sens longitudinal de la lame (1) sur le petit côté extérieur du trapèze et chaque dent de scie étant interrompue par un creux (5, 11) caractérisée par le fait que chaque creux (5, 11) est limité par deux parois latérales (6, 7; 12, 13) parallèles ou divergeant vers l'intérieur, que la largeur d'ouverture de chaque creux (5, 11) est à peu près égale à un tiers du petit côté du trapèze de la dent, que la profondeur des creux (5; 11) est à peu près égale à la moitié de la hauteur de dent (h) et que le fond (8) des creux est arrondi en forme d'arc.
2. Lame de scie selon la revendication 1, caractérisée par le fait que les dents de scie (3) avoyées sont munies sur leur côté intérieur d'une facette d'affûtage (10).
3. Lame de scie selon la revendication 1, caractérisée par le fait que l'angle (a) entre le flanc (9) des dents et l'arête de coupe (4) est compris entre 90° et 150°.
4. Lame de scie selon l'une des revendications 1 à 3, caractérisée par le fait que les dents (3) sont durcies par voie électro- inductive.
EP78101122A 1978-09-29 1978-10-11 Lame de scie pour couper du bois ou des matériaux similaires Expired EP0009512B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2842514A DE2842514C2 (de) 1978-09-29 1978-09-29 Sägeblatt zum Trennen von Holz u.a. Werkstoffen
DE2842514 1978-09-29

Publications (2)

Publication Number Publication Date
EP0009512A1 EP0009512A1 (fr) 1980-04-16
EP0009512B1 true EP0009512B1 (fr) 1982-06-16

Family

ID=6050894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101122A Expired EP0009512B1 (fr) 1978-09-29 1978-10-11 Lame de scie pour couper du bois ou des matériaux similaires

Country Status (3)

Country Link
EP (1) EP0009512B1 (fr)
DE (1) DE2842514C2 (fr)
IT (1) IT1207243B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015008046U1 (de) 2015-11-20 2016-01-27 Robert Bosch Gmbh Sägeblatt

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600567U1 (de) * 1996-01-15 1996-09-26 Wilhelm Putsch oHG, 42855 Remscheid Sägeblatt für eine oszillierende Maschinensäge
US7225714B2 (en) 2004-12-22 2007-06-05 Black & Decker Inc. Tooth form design for reciprocating saw blade
US7658136B2 (en) 2004-12-22 2010-02-09 Black & Decker Inc. Hole saw blade
DE102011050168B4 (de) * 2011-05-06 2014-12-31 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG Sägeblatt zum Sägen von Hohl- und Formprofilen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE47792C (de) * L. JIRKU in Wien IX, Severingasse 6 Bandsäge mit mehreren Sägebändern
DE7616080U1 (fr) * Grzesiek, Leopold, 3401 Landolfshausen
DE675437C (de) * 1937-08-04 1939-05-08 Gerhard Euler Saegeblatt mit zugeschaerften M-Zaehnen
DE823514C (de) * 1949-02-04 1951-12-03 Bernhard Grassmann Saege mit wechselnder Folge von Vorschneidepaaren und Raeumern
FR1049435A (fr) * 1951-07-19 1953-12-29 Partiot Cementation Atel Procédé de traitement des lames de scies à bois, notamment de scies à ruban, et scies obtenues par ce procédé
GB766929A (en) * 1954-09-30 1957-01-30 Hille Engineering Company Ltd Improvements in circular saws
SE363599B (fr) * 1972-03-15 1974-01-28 Uddeholms Ab
DE2722490A1 (de) * 1977-05-18 1978-11-23 Hoeptner Gerd Saegeblatt fuer holzsaegen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015008046U1 (de) 2015-11-20 2016-01-27 Robert Bosch Gmbh Sägeblatt

Also Published As

Publication number Publication date
EP0009512A1 (fr) 1980-04-16
DE2842514C2 (de) 1980-06-19
IT1207243B (it) 1989-05-17
IT7925908A0 (it) 1979-09-21
DE2842514B1 (de) 1979-10-04

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