EP3843926A1 - Lame de scie - Google Patents

Lame de scie

Info

Publication number
EP3843926A1
EP3843926A1 EP19765640.8A EP19765640A EP3843926A1 EP 3843926 A1 EP3843926 A1 EP 3843926A1 EP 19765640 A EP19765640 A EP 19765640A EP 3843926 A1 EP3843926 A1 EP 3843926A1
Authority
EP
European Patent Office
Prior art keywords
saw blade
tooth
cutting
saw
arcuate
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.)
Pending
Application number
EP19765640.8A
Other languages
German (de)
English (en)
Inventor
Hans-Peter Leitinger
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.)
LEITINGER HANS PETER
Original Assignee
LEITINGER HANS PETER
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 LEITINGER HANS PETER filed Critical LEITINGER HANS PETER
Publication of EP3843926A1 publication Critical patent/EP3843926A1/fr
Pending legal-status Critical Current

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
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/021—Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
    • 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
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • 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
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/04—Circular saw blades with inserted saw teeth, i.e. the teeth being individually inserted
    • 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
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12—Straight saw blades; Strap saw blades
    • 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
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12—Straight saw blades; Strap saw blades
    • B23D61/121—Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
    • 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
    • B27B15/00—Band or strap sawing machines specially designed for length cutting of trunks

Definitions

  • the invention relates to a saw blade for a circular saw or a band saw with the
  • WO 2011/038844 A1 discloses saw blades for band saws with a large number of cutting teeth.
  • the incisors of such saw blades usually have a triangular tooth shape that is as acute as possible with a straight rake face.
  • the tooth shape is essentially defined by a clearance angle and a rake angle, in particular the rake angle and the shape of the rake surface, the cutting when sawing
  • the shape of the rake face, the remaining part of the tooth face and the base of the tooth determine the length and clearability of the chip that is formed during sawing. All of these parameters ultimately determine the possible feed rate, i.e. the sawing speed.
  • Feed rate affects.
  • Wood substrates which improves dimensional accuracy and feed performance and consequently enables an increase in the sawing speed with at least constant mechanical stability of the cutting teeth and cut surface quality.
  • the saw blade according to the invention for a circular saw or a band saw has a large number of cutting teeth with a rake face, the rake face preferably in
  • the tooth base is preferably arc-shaped, in particular circular arc-shaped
  • the cutting teeth are preferably formed along a circumferential line of the saw blade, at least one cutting tooth has along the rake face one arranged in a tooth tip region of the cutting tooth
  • arcuate, in particular circular arcuate, chip guide section wherein a chip guide surface of the chip guide section is an arcuate, in particular
  • the saw blade according to the invention enables the rake angle of the incisors to be increased compared to the prior art, as a result of which the incisor is particularly pointed in a tooth tip area.
  • the profile of the tooth face which results from the arcuate profiles of the chip steering surface and the broaching surface according to the invention, enables wider incisors that are mechanically more stable.
  • the arcuate profiles of the chip guide surface and broaching surface allow improved chip control and chip removal, in particular by means of the first broaching section.
  • the saw blades known from the prior art are limited by the rake angle of the rake face.
  • the rake angle is chosen too large for such saw blades, particularly those with triangular tooth shapes, the incisors become unstable, for example due to visible grooves and scoring on the cut surface, and are prone to breakage. For this reason, the rake angles of such saw blades are usually 28 degrees.
  • the invention provides a saw blade, wherein the at least one cutting tooth, which has the arcuate chip guide section, has a first clearing section which is arranged proximal to the chip guide section, the first clearing section having a first clearing surface with an arcuate profile with a negative Has curvature.
  • negative curvature means a concave curvature.
  • the invention provides a saw blade, wherein the at least one cutting tooth, which has the chip steering section and the first broaching section, has an arcuate profile with a negative in the region of the tooth base
  • the invention provides a saw blade, with all cutting teeth of the saw blade having an arcuate, in particular circular arc, chip guide section with a chip guide surface with an arcuate, in particular circular arcuate profile with a negative curvature, a first broaching section with an arcuate profile with a negative curvature and optionally have a second, curved broaching surface, a first broaching edge being formed at the transition between the chip deflection surface and the first broaching section and, if appropriate, a second broaching surface at the transition between the first broaching surface and the second broaching surface
  • the invention provides a saw blade, at least one, preferably all, of the profiles of the chip-deflecting surfaces, the first broaching surfaces and, if appropriate, the second broaching surfaces being / are in the form of a circular arc, preferably by an upsetting process with a upsetting shaft.
  • the generation of the chip can thus be better controlled and chip removal can be further improved.
  • the invention provides a saw blade, a rake angle of the arcuate rake face / n more than 28 degrees, preferably more than 33 degrees, particularly preferably about 38 degrees, and / or a clearance angle of the rake face / s in about 2 to 8 degrees, preferably 3 degrees.
  • the invention provides a saw blade, the diameter of the arcuate profile of the first clearing surface / n being greater than the diameter of the arcuate profile of the chip deflection surface / s and / or
  • the invention provides a saw blade, the diameter of the arcuate profile of the chip deflection surface / n being 0.005 to 0.01 meters, preferably approximately 0.007 meters, and the diameter of the
  • arcuate profile of the first clearing surface / n is more than 0.01 meters, preferably about 0.015 meters.
  • the invention provides a saw blade, the cutting teeth having a cutting body made of hard metal or stellite, which is attached to the cutting tooth via a back surface and optionally at least partially via its proximal surface.
  • the invention provides a saw blade, the back surface of the cutting body being essentially perpendicular to the circumferential line, radially to the circumferential line or at an angle obliquely to the circumferential line.
  • the invention provides a saw blade for a band saw, wherein a tooth depth of the cutting teeth is substantially perpendicular to
  • Circumference of the saw blade is.
  • the invention provides a saw blade for a band saw, the tooth depth of the incisors being approximately 0.010 to 0.20 meters and / or a tooth pitch of the incisors approximately 0.020 to 0.050 meters, preferably 0.025 meters.
  • the invention provides a saw blade for a circular saw, the tooth depth of the cutting teeth extending along a substantially radial direction, the tooth tip of each cutting tooth preferably being made of hard metal and welded onto the cutting tooth. See Figure 4.
  • the invention provides a device with at least one band saw for sawing lamellas or boards from a block-shaped substrate, in particular from a round wood or square wood, the band saw having a, preferably circumferential, saw blade for a band saw according to the invention.
  • Wedge angle into the substrate, starting from the tip of the tooth, is done gently, gently and better because of the inclination, because it cuts with less wedge than with the prior art. This is because the chips are dimensioned and shaped, which can be better cleared out and therefore do not remain on the cutting surface. As an additional advantage, the fine dust generated during sawing is reduced.
  • the invention provides a device in which the saw blade is aligned with the substrate at a cutting angle (SW) of up to 60 degrees, in particular from 20 to 60 degrees, preferably from 25 to 50 degrees, in particular from 30 to 45 degrees , whereby the saw blade cuts obliquely to the wood fiber direction of the substrate.
  • SW cutting angle
  • the shape / length of the chip produced can be changed and to the respective cutting height / length of the teeth be optimized in the intervention.
  • Cutting angle the control of the chip length, the chip guidance and the chip removal can be further improved. Increasing the chip length also reduces the fine dust generated during sawing, which is desirable. A sufficiently long chip, on the other hand, can only be obtained if the saw blade is optimized with an adjusted
  • Inclination and toothing is formed according to the present invention. Furthermore, by tilting the saw blade, a higher dimensional accuracy is achieved because the deviation of the saw blade is reduced. A smoother cut surface is also achieved because fewer fiber parts are torn out.
  • the cutting angle of the saw blade is preferably adjustable. By controlling the cutting angle depending on the dimension and type of wood of the substrate as well as its moisture status, an optimization of the
  • Cutting performance of the saw blade can be achieved.
  • the saw blade rotates around two Elm running axes, which are preferably implemented as Elm steering rollers, and is divided into two spaced apart runs by the Elm running axes, the spacing of which from one another is set such that when cutting of a substrate cut both strands of the saw blade through the substrate.
  • two lamellae can be cut off the substrate at the same time with one cutting process.
  • a transport device for feeding substrates to the saw blade is provided for the relative movement between the substrate and the saw blade, with which the substrates either with their longitudinal axis parallel to the transport direction of the transport device or with their longitudinal axis obliquely to
  • Transport direction of the transport device are transportable, the
  • Transport device preferably has driven conveyor belts, conveyor belts and / or chain conveyors.
  • At least one band saw is provided with a saw blade designed as a rotating saw band, the band saw being related can be moved onto a substrate to be sawed, with fixing means optionally being provided for fixing the substrate.
  • At least one separating means is provided for separating the lamella cut from the substrate from the substrate, the separating means preferably being in the form of strips with a rectangular cross section or riving knife and arranged downstream of the saw blade.
  • 1A to 1E each show a section of five cutting teeth of a saw blade for a band saw according to a first exemplary embodiment of the invention
  • FIG. 2 shows a cutting tooth of the saw blade according to FIG. 1C;
  • FIG. 3 shows an enlarged detail A from FIG. 2;
  • FIG. 4 shows a cutting tooth of a saw blade for a band saw or a circular saw according to a second embodiment of the invention
  • FIG. 5 shows a top view of a device according to a first embodiment with a band saw with a saw blade in a substantially horizontal sectional plane according to the first or second exemplary embodiment of the invention
  • FIG. 6 shows a top view of a device according to a second embodiment with a band saw with a saw blade according to the first or second exemplary embodiment of the invention
  • FIG. 8 shows an enlarged detail B from FIG. 7B.
  • FIG. 9 shows a side view of a device according to the first embodiment with a band saw with a saw blade in a substantially vertical sectional plane according to the first or second exemplary embodiment of the invention
  • FIGS. 1A to 1E each show a section with five cutting teeth 2 along a longitudinal line 3 of the saw blade 1.
  • the incisors 2 can also be arranged offset at different distances from the LT circumferential line 3 and / or with different tooth pitch, for example, every second tooth with its tooth base 5 can be arranged below the LT circumferential line 3, which creates a kind of “wave arrangement” of the incisors 2.
  • the order and shape of the incisors 2 can be characterized by a tooth pitch Z and a tooth depth T. In the case of band saws, the tooth depth T is essentially perpendicular to the circumferential line 3 or is determined in this way. In the illustrated examples according to FIGS.
  • the tooth depth T of the incisors 2 is approximately 0.012 meters and the tooth pitch Z of the incisors is approximately 0.025 meters.
  • the tooth depth T of the cutting teeth 2 extends, for example, along an essentially radial direction.
  • Each cutting tooth 2 has a rake face 4, a tooth base 5 and a tooth tip 17.
  • the incisors 2 have a chip guide section 7 and a first broaching section 8 along the rake face 4, as is shown in more detail in FIG.
  • the chip steering section 7 is arranged in a tooth tip region 6 of the cutting tooth 2.
  • the first clearing section 8 is arranged proximal to the Spanlenka section 7, that is closer to the circumferential line 3 than the Spanlenkabêt 7 or, in the case of a circular saw, closer to the center of the circular saw.
  • the chip steering section 7 has a chip steering surface 9 with an arcuate profile, which in the examples shown
  • the first broaching section 8 has a broaching surface 11 with an arcuate profile, which in the examples shown is an arcuate profile with a diameter DR1. In the illustrated
  • the diameter DR1 is in each case approximately approximately 0.015 meters and the diameter DSL is approximately 0.005 meters (FIG. 1A), approximately 0.006 meters (FIG. 1B), approximately 0.007 meters ( Fig. 1C), about 0.008 meters (Fig. 1D) or about 0.009 meters (Fig. 1E).
  • a clearance angle FW of the chip-guiding surface 9 is approximately 3 degrees.
  • a rake angle SPW the clearance angle FW
  • the chip deflection surface 9 is, according to the invention, more than 28 degrees of angle, that is to say more than a straight and obliquely ground tooth face known from the prior art (see also dashed line in Figure 3).
  • the rake angle SPW of the rake guide surface 9 according to the invention is preferably more than 33 angular degrees, particularly preferably approximately 38 angular degrees.
  • FIG. 3 clearly shows how an incisor 2 according to the invention enables the rake angle SPW to be made larger than in the case of an incisor tooth from the prior art, where the rake angle SPW is usually 28 ° (see also dashed lines).
  • the arcuate profile of the chip steering surface 9 has a negative curvature, which means that the arcuate profile follows a concave function.
  • the chip guide surface 9 has a more pointed shape or cutting edge than a triangular tooth shape from the prior art in an upper, distal region 14 of the chip guide section 7 directly at the tooth tip 17, where the cutting tooth 2 engages when sawing for the first time. which improves, among other things, the cutting surface, dimensional accuracy and feed performance.
  • the arcuate profile of the chip steering surface 9 is significantly wider in a lower, proximal area 15 of the cutting tooth 2, as a result of which sufficient mechanical stability is made available.
  • the tooth tip region is 6
  • the chip steering section 7 and the first broaching section 8 can be shaped and sharpened by upsetting, flanking and profile grinding.
  • a cutting tooth 20 according to the invention can also have a substantially prismatic cutting body 13 made of hard metal or stellite, which is attached to the cutting tooth 20 via its back surface 29 and optionally at least partially via its proximal surface 31.
  • Cutting body 13 can, for example in the case of a saw blade 1 for a band saw, be welded perpendicular to the circumferential line 3, or, for example in the case of a saw blade for a circular saw (not shown), radially to a circumferential line.
  • the cutting body 13 can also be welded on at an angle, for example in the case of a saw blade 1 for a band saw at an angle WSK to the circumferential line 3, as shown in broken lines in FIG.
  • the cutting body 13 made of hard metal is shaped and ground by flank and profile grinding.
  • the cutting tooth 20 shown in FIG. 4 has a chip steering section 7 and a first broaching section 8, which can have the configuration (s) according to the cutting tooth 2.
  • the cutting tooth 20 also has an arcuate profile with a diameter DR2 in the region of the tooth base 5, which profile forms a second broaching surface 16.
  • the profile of the chip steering surface 9, the first broaching surface 11 and the second broaching surface 16 is designed in the shape of a circular arc.
  • the arcuate profile of the first broaching surface 11 is, for example, 0.015 meters and larger than the diameter DSL of the arcuate profile of the chip deflection surface 9, which is, for example, 0.007 meters, and larger than the diameter DR2 of the second
  • the Clearing surface 16 which is for example 0.004 meters.
  • the second clearing surface 16 can have any arcuate profile.
  • the cutting teeth 2 according to the first exemplary embodiment according to FIGS. 2 and 3 can also have a second broaching surface 16 and / or a cutting body 13 made of hard metal or stellite, wherein the profile of the chip deflection surface 9, the first broaching surface 11 and the second broaching surface 16 can be in the form of a circular arc .
  • the cutting teeth 20 according to the second exemplary embodiment cannot have a second broaching surface 16, that is to say only the chip steering section 7 and the first broaching section 8, and / or none
  • Cutting bodies 13 made of hard metal or stellite, that is to say, for example, they may be stellited or compressed in accordance with the above description.
  • the cutting teeth 2 or 20 can have a coating made of titanium nitride, hard metal and / or diamond, in particular in the region 6 of the tooth tip 17 or the chip guide surface 9, the first broaching surface 11 and / or the second broaching surface 16.
  • a saw blade 1 for a band saw or circular saw or another saw blade 1 according to the invention can have one, several or only cutting teeth 2 according to the first embodiment and / or cutting teeth 20 according to the second embodiment.
  • the incisors 2 and / or 20 can be in regular and / or
  • the incisors 2 and / or 20 can be flank and profile grinding as flat tooth, roof tooth, helical tooth, hollow tooth, hollow tooth with bevel on both sides, trapezoidal tooth, trapezoidal flat tooth with axis angle,
  • FIG. 5 shows an exemplary device 10 according to a first embodiment with a band saw 18 with a saw blade 1 according to the first or second embodiment of the invention, which is designed as a rotating saw band.
  • the saw blade 1 can have at least one, a plurality of and / or exclusively incisors 2 and / or 20.
  • the device 10 can be used for sawing lamellae 19 from block-shaped substrates 21, for example untrimmed starting timber or squared timber with tree edges.
  • the saw band runs around two circumferential axes 22, which are the longitudinal axes of
  • the substrate 21 in the longitudinal direction which extends essentially along a longitudinal axis 23 of the substrate 21, can be passed through the rotating saw band.
  • the saw blade 1 and the one saw direction 28 of the saw blade 1 are in an essentially horizontal cutting plane in the operating position.
  • the substrate 21 can be simultaneously twisted twice by the same rotating saw band or by several, preferably essentially parallel, rotating or clamped on both sides
  • block-shaped substrate 21 can be sawn.
  • the saw blade 1, the saw band and / or the saw bands can also be arranged according to FIG. 9 in an essentially vertical cutting plane.
  • the saw blade 1 or the cutting angle SW can be adjusted about a pivot point 37.
  • two or four vertically arranged band saws or saw blades 1 can engage in the substrate 21 simultaneously next to one another or successively arranged one after the other.
  • the substrate 21 can the saw blade 1 along a transport direction 24, which in the
  • the substrate 21 is, for example, a debarked tree trunk or an untrimmed sawn timber, such as a screed or a squared timber in block cut, then this runs
  • the substrate 21 can be supplied in a manner deviating from the longitudinal axis 23, for example at an angle to its longitudinal axis 23.
  • the substrate 21 can be fed or discharged by means of one or more transport means 25, for example by means of a driven roller or conveyor belt or a chain conveyor.
  • the device 10 vertical guides 26 and / or have a horizontal band guide 27 for the saw band in order to improve the feeding or removal of the substrate 21.
  • the saw blade 1 engages the substrate 21 at a cutting angle SW.
  • the cutting angle SW is defined as the angle between the sawing direction 28 of the saw blade 1 and a normal to the transport direction 24 and lies in the horizontal cutting plane. If the saw blade 1 is alternatively arranged vertically, the cutting angle SW lies in a vertical cutting plane.
  • the cutting angle SW can have a value between 20 and 60 degrees, preferably between 25 and 50 degrees, in particular between 30 and 45 degrees.
  • the cutting angle SW can, for example, have the value 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 or 60 angular degrees or a value between these examples.
  • two or four horizontally and / or vertically arranged band saws or saw blades 1 can engage in the substrate 21 at the same time next to one another or successively arranged at one of the aforementioned cutting angles SW.
  • a particularly advantageous arrangement consists of a first vertically arranged band saw, which is particularly suitable for dividing thick round logs vertically, followed by two parallel, horizontally arranged band saws, which are particularly suitable for sawing half of the previously vertically divided round wood into lamellae 19.
  • FIGS. 6 to 8 show an exemplary device 30 according to a second
  • the band saw 18 is placed in a housing 32.
  • the saw blade 1 can have at least one, a plurality of and / or exclusively incisors 2 and / or 20.
  • the housing 32 or the band saw 18 is moved forwards and backwards along a sawing direction 33 and essentially parallel to the longitudinal direction / longitudinal axis 23 of the substrate 21, for example a debarked tree trunk, as a result of which, for example, slats 19 can be sawn from untrimmed starting timber.
  • the substrate 21 can be held by fixing means 34, for example automated grippers.
  • the device 30 can have turning means 35 for the automated turning of the substrate 21, for example by means of driven conveyor chains.
  • the device 10 or 30 can have one or more separating means 36.
  • Release agent 36 can be designed as one or more subsequent bands without cutting teeth, which is / are located downstream of the saw blade 1 in the sawing direction 33.
  • Such follow tapes have a substantially rectangular cross section and ensure a better one Separating the cut-off lamellae 19 and thus reducing the contact and the subsequent heating between the saw blade 1 and lamella 19 or substrate 21.
  • the separating means 36 can be designed as a preferably tiltable splitting wedge according to FIG. 8, which in the saw band or the saw bands Saw direction 33 is downstream. Splitting wedges of this type ensure better separation and removal of the cut-off lamellae 19 and / or the remaining substrate 21.
  • the first broaching surfaces 11 and optionally the second broaching surfaces 16 of the saw blade 1 by an upsetting process with an upsetting tool, in particular an upsetting shaft.
  • an upsetting tool in particular an upsetting shaft.
  • the creation of curved surfaces by means of upsetting is known per se, however, a rake surface produced in this way is then usually ground straight. According to the invention, however, when using upsetting, there is no subsequent straight grinding of the surfaces produced, because the inventor has recognized that these arcuate formation of surfaces of the saw blade teeth resulting from the mere upsetting process offers a guiding or centering function for the chips to be removed from the kerf and therefore supports the guidance of the chips.
  • the leveling process can be leveled laterally (in the form of straight presses or pressed somewhat obliquely with a slight taper) to a width less than or equal to the kerf, so that the bulge on the rake face 4 causes a more or less continuous concave guide trough for the compression the chip arises. If this is obtained from the upsetting, it is formed in an arc shape as a concave shape
  • Chip guide trough unlike in the prior art, is not just ground on the tooth and thus eliminated, but left in place, so this chip guide surface leads to centered guiding and clearing of the chips out of the kerf, even without reworking.
  • the concave shape on the arcuate rake surface can alternatively be used with stellite, e.g. by plasma welding in a mold jaw, with optional finishing by grinding.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne une lame de scie (1) pour une scie circulaire ou une scie à ruban (18) pourvue d'une pluralité de dents de coupe (2, 20) présentant une face (4) de coupe, la face (4) de coupe étant de préférence sensiblement arquée, en particulier en arc de cercle, et d'un fond (5) de dent, le fond (5) de dent étant de préférence arqué, en particulier en arc de cercle, les dents de coupe (2, 20) étant de préférence formées le long d'une ligne périphérique (3) de la lame de scie (1). Avec la lame de scie (1) selon l'invention, au moins une dent de coupe (2, 20) présente le long de la face (4) de coupe une partie de guidage (7) de coupe arquée, en particulier en arc de cercle, disposée dans une zone de pointe (6) de la dent de coupe (2, 20). Une surface (9) de guidage de coupe de la partie de guidage (7) de coupe présente un profil arqué, en particulier en arc de cercle, présentant une courbure négative.
EP19765640.8A 2018-08-31 2019-08-30 Lame de scie Pending EP3843926A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM50149/2018U AT16751U1 (de) 2018-08-31 2018-08-31 Sägeblatt
PCT/AT2019/060282 WO2020041816A1 (fr) 2018-08-31 2019-08-30 Lame de scie

Publications (1)

Publication Number Publication Date
EP3843926A1 true EP3843926A1 (fr) 2021-07-07

Family

ID=69642649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19765640.8A Pending EP3843926A1 (fr) 2018-08-31 2019-08-30 Lame de scie

Country Status (3)

Country Link
EP (1) EP3843926A1 (fr)
AT (1) AT16751U1 (fr)
WO (1) WO2020041816A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT17009U1 (fr) * 2020-01-31 2021-02-15 Leitinger Hans Peter
EP4116022A1 (fr) * 2021-07-08 2023-01-11 Metamob S.r.l. Lame de scie à ruban

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US239098A (en) * 1881-03-22 Edwot a
FR943380A (fr) * 1946-04-05 1949-03-07 Denture perfectionnée pour lames de scie à ruban
FR1064207A (fr) * 1952-10-08 1954-05-12 Scie pour le travail du bois et autres matières à fibres dirigées
US2964078A (en) * 1958-08-12 1960-12-13 Glen E Proctor Insertable tooth edger saw
DE3326843C2 (de) * 1983-07-26 1986-01-02 Pirmin 6724 Dudenhofen Heil Band- oder Gattersägemaschine
JPH0749168B2 (ja) * 1987-06-29 1995-05-31 兼房株式会社 超硬質チップ付丸鋸
HUT62224A (en) * 1990-04-11 1993-04-28 Leitinger Hans Peter Cutting device for band saw
JP3283572B2 (ja) * 1992-06-18 2002-05-20 株式会社アマダ 帯鋸刃
JP3313761B2 (ja) * 1992-06-22 2002-08-12 株式会社アマダ 帯鋸刃
DE102006015278A1 (de) * 2006-04-01 2007-10-04 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG Sägeblatt mit einem Grundkörper und Zähnen mit Schneiden
JP5173670B2 (ja) * 2008-08-20 2013-04-03 株式会社アマダ 鋸刃及びその製造方法
DE102009047874B3 (de) 2009-09-30 2011-04-21 J.N. Eberle & Cie Gmbh Bandsäge und Sägeblatt
JP2015009296A (ja) * 2013-06-27 2015-01-19 株式会社アマダ 鋸刃

Also Published As

Publication number Publication date
AT16751U1 (de) 2020-07-15
WO2020041816A1 (fr) 2020-03-05

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