EP4217139A1 - Lame de scie et scie cloche - Google Patents

Lame de scie et scie cloche

Info

Publication number
EP4217139A1
EP4217139A1 EP21773713.9A EP21773713A EP4217139A1 EP 4217139 A1 EP4217139 A1 EP 4217139A1 EP 21773713 A EP21773713 A EP 21773713A EP 4217139 A1 EP4217139 A1 EP 4217139A1
Authority
EP
European Patent Office
Prior art keywords
saw blade
teeth
tooth
hard metal
longitudinal axis
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
EP21773713.9A
Other languages
German (de)
English (en)
Inventor
Donghui DING
Daniel Grolimund
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP4217139A1 publication Critical patent/EP4217139A1/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
    • B23D61/12—Straight saw blades; Strap saw blades
    • B23D61/14—Straight saw blades; Strap 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
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/04—Drills for trepanning
    • 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
    • B23D61/127—Straight saw blades; Strap saw blades of special material

Definitions

  • a saw blade having a plurality of wave-like shaped teeth formed on a continuous base portion of the saw blade is known in the prior art, the teeth each having a hard metal cutting edge.
  • EP 0 054 885 A2 describes a saw blade in the form of a band saw blade equipped with hard metal plates.
  • This band saw blade should be characterized by a long service life and a high permissible stepping speed and be suitable for cutting very hard materials such as metals or stones.
  • the band saw blade is unset and the hard metal plates are fastened to seating surfaces that are perpendicular to the longitudinal extent of the saw blade or are only slightly inclined forward.
  • the hard metal plates have a height between 1/3 to 4/5 of a respective tooth height and protrude on both sides with undercut free-cut widenings over the saw blade thickness.
  • chamfers increase tear resistance and impact resistance.
  • the term “chamfer” is understood to mean a planar or prismatic chamfering or beveling of a workpiece edge.
  • the lands of each tooth have a different width.
  • the saw blade 100 with the base section 102 illustratively has a center plane M in which a longitudinal axis 120 runs.
  • a preferred cutting direction 198 of the saw blade 100 is indicated by an arrow 198 .
  • Fig. 2 shows the base section 102 of the saw blade 100 of Fig. 1, on which the teeth Zi,2 are formed, with the hard metal cutting edge 114 being fastened in the area of the tooth base upper side 150 of the tooth Zi and the hard metal cutting edge 116 being fastened in the area of the tooth base upper side 152 of the tooth Z2 is.
  • the teeth Zi,2 are set here only by way of example, i.e. bent in opposite directions to one another out of the central plane M of the base section 102 of the saw blade 100.
  • the teeth Zi,2 of the saw blade 100 can also be designed without set (see especially FIG. 4).
  • the saw blade 100 is guided in the cutting direction 198 through the workpiece to be machined, which is not shown here.
  • FIG. 3 shows the base section 102 of the saw blade 100 of FIG. 2, on which the set teeth Zi,2 are formed.
  • the teeth Zi,2 of the saw blade 100 are illustratively located in a saw channel S or a kerf of a workpiece W to be machined.
  • the longitudinal axis 120 of the base section 102 runs within the center plane M of the base section 102 and the cutting direction 198 of the saw blade 100 through the workpiece W points out of the plane of the drawing in the representation of FIG.
  • FIG. 6 shows a fourth embodiment of a saw blade 300 with a base section 302.
  • Two teeth Z1.8 with their respective tooth bases 310, 312 are illustratively formed on the base section 302 of the saw blade 300.
  • FIG. In the region of the tooth base upper sides 314, 316 of the teeth Z1, 8, which are assigned to the tooth bases 310, 312, hard metal cutters 324, 326 are preferably arranged or embedded flush in them and fastened on the upper side.
  • the teeth Z?,8 and all other similar teeth of the fourth embodiment of the shown here Saw blade 300 preferably in turn has a set.
  • the structural design of the other teeth of the saw blade 300, not shown, preferably corresponds to the teeth Z1.8 in terms of structural design.
  • the saw blade 250 guided in the saw channel S preferably moves in the cutting direction 198 through the workpiece W.
  • the hard metal cutting edges 324, 326 and the tooth base tops 314, 316 of the teeth Z1, 8 of the saw blade 300 which are flush with them preferably have continuous, flat or planar bevels Fg .12, whose widths are preferably of different sizes.
  • the chamfers Fg, i2 lying on the outside in relation to the central plane M preferably each have the same width, only the width B3 of the chamfer Fg being designated for the sake of a better graphic overview. The same applies to the widths of the two inner bevels Fio.n, of which only a width B4 of the bevel F10 of the tooth Zs is designated.
  • Carbide cutting edges 324, 326 are preferably in turn flush on both sides with the respective tooth bases 310, 312 of the teeth Z1, 8, which results, among other things, in their high mechanical robustness and durability.
  • Fig. 9 shows a sixth embodiment of a saw blade 400, which preferably has a base section 402, on which five teeth Z12 ie are formed here by way of example, the geometry of which is only an example of the structural design of the teeth of the first embodiment of the saw blade 100 from Fig. 1 to 3 corresponds.
  • the teeth Z12 ie can also be designed with convex curves and/or with chamfers of different widths.
  • the saw blade 400 with the base section 402 has the center plane M with the longitudinal axis 120 lying therein. The saw blade 400 is guided in the cutting direction 198 through the workpiece to be machined, which is not shown here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Drilling Tools (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

Lame de scie (100) comprenant une pluralité de dents (Z1,Z2) de forme ondulée qui sont formées sur une section de base (102) continue de la lame de scie (100), les dents (Z1,Z2) présentant respectivement une base de dent (140, 142) associée comprenant un côté supérieur (150, 152) et contre laquelle est agencée une arête de coupe en métal dur (114, 116). Chaque base de dent (140, 142) vient respectivement le long d'un axe longitudinal (120) de la section de base (102) des deux côtés à fleur de l'arête de coupe en métal dur (114, 116) adjacente, et chaque arête de coupe en métal dur (114, 116) et chaque côté supérieur (150, 152) de base de dent présente deux chanfreins et/ou parties arrondies convexes qui s'étendent sensiblement le long de l'axe longitudinal (120) de la section de base (102), les dents (Z1,Z2) se présentant sous une forme non avoyée ou avoyée.
EP21773713.9A 2020-09-22 2021-09-06 Lame de scie et scie cloche Pending EP4217139A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020211809.4A DE102020211809A1 (de) 2020-09-22 2020-09-22 Sägeblatt sowie Lochsäge
PCT/EP2021/074472 WO2022063552A1 (fr) 2020-09-22 2021-09-06 Lame de scie et scie cloche

Publications (1)

Publication Number Publication Date
EP4217139A1 true EP4217139A1 (fr) 2023-08-02

Family

ID=77897587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21773713.9A Pending EP4217139A1 (fr) 2020-09-22 2021-09-06 Lame de scie et scie cloche

Country Status (5)

Country Link
US (1) US20230398617A1 (fr)
EP (1) EP4217139A1 (fr)
CN (1) CN116323060A (fr)
DE (1) DE102020211809A1 (fr)
WO (1) WO2022063552A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11986890B2 (en) * 2022-02-07 2024-05-21 The M.K. Morse Company Carbide tip hole saw

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1214072B (de) 1961-05-18 1966-04-07 Doall Co Verfahren zum Ansetzen von Hartmetallschneiden an Werkzeuge aus Stahl
US3430526A (en) * 1965-06-30 1969-03-04 Interpace Corp Shell cutter
DE3049018A1 (de) 1980-12-24 1982-07-22 Gerd Höptner "mit hartmetallplatten bestuecktes bandsaegeblatt"
US4784033A (en) * 1986-01-22 1988-11-15 Milford Products Corporation Triple chip ground carbide tip bandsaw blade with ductile filler
JPH0349822A (ja) * 1989-07-17 1991-03-04 Cosmo Giken Kk 帯鋸およびそれを使用した金属材料の切断方法
US5249485A (en) * 1991-12-31 1993-10-05 Sandvik Ab Bandsaw blade and method of manufacturing same
JP2936219B2 (ja) * 1995-05-13 1999-08-23 株式会社谷テック 丸 鋸
US6520722B2 (en) * 1999-07-21 2003-02-18 Simonds Industries, Inc. Asymmetrical cutting tool tooth form
DE102015116747B3 (de) 2015-10-02 2017-03-30 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG Sägeblatt mit einem Spanteilerzahn

Also Published As

Publication number Publication date
CN116323060A (zh) 2023-06-23
DE102020211809A1 (de) 2022-03-24
WO2022063552A1 (fr) 2022-03-31
US20230398617A1 (en) 2023-12-14

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