EP2753447A1 - Lame de scie pour une machine-outil - Google Patents

Lame de scie pour une machine-outil

Info

Publication number
EP2753447A1
EP2753447A1 EP12735875.2A EP12735875A EP2753447A1 EP 2753447 A1 EP2753447 A1 EP 2753447A1 EP 12735875 A EP12735875 A EP 12735875A EP 2753447 A1 EP2753447 A1 EP 2753447A1
Authority
EP
European Patent Office
Prior art keywords
saw blade
cutting edge
radius
axis
rotation
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.)
Ceased
Application number
EP12735875.2A
Other languages
German (de)
English (en)
Inventor
Milan Bozic
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
Priority to EP20165281.5A priority Critical patent/EP3708284A1/fr
Publication of EP2753447A1 publication Critical patent/EP2753447A1/fr
Ceased 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
    • B23D61/006—Oscillating 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
    • B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • 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
    • B27B19/00—Other reciprocating saws with power drive; Fret-saws
    • B27B19/006—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades
    • 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
    • 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
    • Y10T83/9454—Reciprocable type
    • 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
    • Y10T83/9457—Joint or connection

Definitions

  • Saw blade for a machine tool The invention relates to a saw blade, in particular a rotary oscillating saw blade for a machine tool, according to the preamble of claim 1.
  • PRIOR ART DE 203 08 797 U1 discloses a saw blade for a saw with rotational oscillating
  • the saw blade has an approximately rectangular master blade, which is formed integrally with a mounting portion into which a recess for receiving the tool shaft of the saw is introduced. On the side facing away from the recess, the master blade is provided with a cutting edge, which serves for workpiece machining and as a rectilinear
  • Edge is provided with cutting teeth.
  • the problem may arise that the corner areas can get caught in the machining of the material of the workpiece.
  • the corner portion When reversing the direction of rotation, only the corner portion is in contact with the workpiece, so that the cutting edge is subjected to an uneven load.
  • EP 0 695 607 A1 describes a saw blade for a bone saw with rotary oscillation drive.
  • the saw blade is also approximately rectangular in shape and has a part-circular curved cutting edge with cutting teeth, wherein the radius of the cutting edge corresponds to the distance from the axis of rotation.
  • the part-circular design of the cutting edge leads to a more uniform load on the incisors, but when changing the direction of rotation resulting chips during machining are not optimal
  • the invention has for its object to form a saw blade with a teilnikförmi- gene cutting edge so that the saw blade has a long life and resulting in workpiece machining chips are better dissipated.
  • the saw blade according to the invention can be used in the machine tool, in particular in hand tool machines, which are provided with a rotary oscillation drive, so that the saw blade executes an oscillating rotational movement during operation.
  • the saw blade has a master blade, which is provided with a curved, in particular part-circular or polygonal cutting edge.
  • the master sheet is circular segment-shaped or rectangular or approximately rectangular in shape, for example trapezoidal.
  • the master blade is connected to a fastening section, via which the saw blade is detachably connected to the tool shaft of the machine tool.
  • the attachment portion is either formed integrally with the master sheet or designed as a separate component, but which is firmly connected to the master sheet.
  • the saw blade is bent so that the master blade and the attachment portion lie in parallel offset planes.
  • both the master blade and the attachment section are designed as flat or plate-shaped components in each case.
  • the curved cutting edge is less curved than a circular arc having a radius corresponding to the distance between the axis of rotation of the saw blade and the cutting edge.
  • the radius of the cutting edge on the master blade is greater than the distance between the axis of rotation of the saw blade and the cutting edge.
  • the axis of rotation is guided by the attachment portion, in particular by the attachment recess in the attachment portion, by the tool shaft in the mounted state is guided; the axis of rotation of the saw blade coincides in the assembled state with the shaft axis of the tool shaft.
  • the part-circular cutting edge thus has an enlarged radius compared to known embodiments.
  • the larger radius compared to the distance between the axis of rotation of the saw blade and the cutting edge results in the workpiece machining at a reversal of rotation, a wedge or gap-shaped space between the cutting teeth and the workpiece over which the costs incurred in workpiece machining chips easier to dissipate can be.
  • a more uniform loading of the cutting edge is obtained than with straight cutting edges; the load corresponds approximately to that with a circular shape whose radius center coincides with the axis of rotation of the saw blade. Overall, this results in the advantage of a longer service life and improved chip removal.
  • the cutting edge is advantageously carried out symmetrically with respect to a central axis, which leads longitudinally through the saw blade, so that the radius center of the cutting edge lies on the central axis.
  • asymmetric versions of the cutting edge come into consideration, in which the radius center is located at a lateral distance from the central axis.
  • Saw teeth are expediently arranged on the cutting edge, wherein the radius can relate both to the tooth base and to the tooth tips.
  • the radius of the cutting edge is dimensioned, for example, so that the center is outside the mounting portion.
  • the cutting edge radius is for example 10%, 20% or 30% larger than the distance between the axis of rotation and the cutting edge.
  • a polygon-shaped cutting edge is also taken into consideration, which as a whole is also bent.
  • the curved cutting edge is less curved than a circular arc with a radius corresponding to the distance between the axis of rotation of the saw blade and the cutting edge, so that as in the part-circular cutting edge, the advantage is achieved that in the Workpiece processing in the Drehtchtungsumlotung a wedge- or gap-shaped space between the cutting teeth and the workpiece consists, over which the costs incurred in workpiece machining shavings can be easily removed.
  • the saw blade is preferably designed as a dip saw blade.
  • FIG. 1 is a perspective view of a saw blade with a rectangular
  • Master blade whose leading edge is designed as a part-circular cutting edge, and with a mounting portion for attachment to a tool shaft,
  • Fig. 2 the saw blade in plan view.
  • Fig. 1 a designed as a diving saw blade saw blade 1 is shown for a hand tool with rotary oscillation drive.
  • the saw blade 1 comprises a master blade 2, which is designed plate-shaped with approximately rectangular, possibly slightly trapezoidal geometry, and a mounting portion 3, via which the saw blade 1 is connected to a tool shaft 6 of the power tool.
  • the fastening section 3 facing away from the front edge of the stem sheet 2 is designed as a cutting edge 4 with cutting teeth.
  • a central mounting recess 5 for receiving the tool shaft 6 is introduced.
  • the attachment is effected by means of a suitable fastening device, wherein for torque transmission in the mounting portion 3 annular locking holes 8 are arranged around the mounting recess 5 are introduced, protrude into the mounted state locking nubs of the fastening device to transmit the torque from the tool shaft to the saw blade 1.
  • the shaft axis of the tool shaft 6 coincides with the axis of rotation 7 through the fastening recess 5 in the fastening section 3.
  • Both the master sheet 2 and the attachment portion 3 are executed in itself. Since the saw blade 1 is formed cranked, the master sheet 2 and the mounting portion 3 are in parallel offset planes. The master blade 2 and the attachment portion 3 are designed as separate components, which are firmly connected to each other via a connecting portion.
  • the cutting edge 4 with the cutting teeth is formed part-circular.
  • the radius R of the cutting edge 4 is shown.
  • the center 9 of the radius R of the cutting edge 4 is outside the mounting portion 3.
  • the radius R is greater than the distance between the axis of rotation 7, which passes through the mounting recess 5, and the cutting edge 4. Due to the increased radius R of the cutting edge 4 arise the rotational oscillatory movement of the saw blade 1 in the reversal of rotation free spaces between the cutting edge 4 and the workpiece to be machined, over which the chip removal is improved.
  • the radius R is significantly greater than the distance between the axis of rotation 7 and the cutting edge 4.
  • the radius R is 1.25 times the distance between the axis of rotation 7 and the cutting edge 4.
  • smaller or larger values are also suitable for example, 1.5 times or 2 times.

Landscapes

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

Abstract

L'invention concerne une lame de scie (1) présentant une lame de base (2) dotée d'arêtes de coupe (4) qui sont moins incurvées qu'un arc de cercle présentant un rayon qui correspond à la distance entre l'axe de rotation de la lame de scie et l'arête de coupe (4).
EP12735875.2A 2011-09-07 2012-07-16 Lame de scie pour une machine-outil Ceased EP2753447A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20165281.5A EP3708284A1 (fr) 2011-09-07 2012-07-16 Lame de scie pour une machine-outil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110082228 DE102011082228A1 (de) 2011-09-07 2011-09-07 Sägeblatt für eine Werkzeugmaschine
PCT/EP2012/063871 WO2013034344A1 (fr) 2011-09-07 2012-07-16 Lame de scie pour une machine-outil

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP20165281.5A Division EP3708284A1 (fr) 2011-09-07 2012-07-16 Lame de scie pour une machine-outil

Publications (1)

Publication Number Publication Date
EP2753447A1 true EP2753447A1 (fr) 2014-07-16

Family

ID=46516752

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20165281.5A Withdrawn EP3708284A1 (fr) 2011-09-07 2012-07-16 Lame de scie pour une machine-outil
EP12735875.2A Ceased EP2753447A1 (fr) 2011-09-07 2012-07-16 Lame de scie pour une machine-outil

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20165281.5A Withdrawn EP3708284A1 (fr) 2011-09-07 2012-07-16 Lame de scie pour une machine-outil

Country Status (5)

Country Link
US (1) US10799968B2 (fr)
EP (2) EP3708284A1 (fr)
CN (1) CN103764328B (fr)
DE (1) DE102011082228A1 (fr)
WO (1) WO2013034344A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2008014258A2 (fr) 2006-07-24 2008-01-31 Spine Solutions, Inc. Implant intervertébral avec quille
US8925931B2 (en) 2010-04-29 2015-01-06 Black & Decker Inc. Oscillating tool
US9073195B2 (en) 2010-04-29 2015-07-07 Black & Decker Inc. Universal accessory for oscillating power tool
EP3090839A1 (fr) * 2011-09-29 2016-11-09 Positec Power Tools (Suzhou) Co., Ltd Outil électrique oscillatoire
US9027452B2 (en) * 2011-12-27 2015-05-12 Robert Bosch Gmbh Jab saw accessory tool for an oscillating tool
DE102012201667A1 (de) * 2012-02-06 2013-08-08 Robert Bosch Gmbh Drehoszillationstrennwerkzeug für eine Werkzeugmaschine
USD832666S1 (en) 2012-07-16 2018-11-06 Black & Decker Inc. Oscillating saw blade
CN105613694A (zh) * 2014-10-29 2016-06-01 重庆念记食品有限公司 扇齿旋刀式鲜肉自动分解供应装置
US10549435B2 (en) * 2014-12-31 2020-02-04 Robert Bosch Tool Corporation Oscillating tool with modified mounting interface for increasing cut depth
USD809356S1 (en) * 2015-08-21 2018-02-06 Robert Bosch Gmbh Saw blade
CN105856298A (zh) * 2016-05-11 2016-08-17 蔡锦霞 一种支柱式旋转切刀结构
CN105728847B (zh) * 2016-05-11 2018-09-11 蔡锦霞 一种锯刀结构
CN105773726A (zh) * 2016-05-11 2016-07-20 蔡锦霞 一种支柱式切刀装置
CN105880732B (zh) * 2016-05-11 2018-06-29 蔡锦霞 一种锯刀削切装置
CN105750652B (zh) * 2016-05-11 2018-04-13 蔡锦霞 一种滑槽式切刀结构
US10265778B2 (en) 2017-01-16 2019-04-23 Black & Decker Inc. Accessories for oscillating power tools
USD814900S1 (en) * 2017-01-16 2018-04-10 Black & Decker Inc. Blade for oscillating power tools
USD853817S1 (en) * 2017-07-27 2019-07-16 Hailian Saw Blade Technology Co., Ltd. Hole template for multi-function electrical tool
US10843282B2 (en) 2017-08-16 2020-11-24 Imperial Blades Oscillating blade with universal arbor engagement portion
US20190240752A1 (en) * 2018-02-02 2019-08-08 Imperial Blades Oscillating tool drywall blade
WO2020003244A2 (fr) * 2018-06-29 2020-01-02 DePuy Synthes Products, Inc. Lame de scie hybride
USD931069S1 (en) * 2019-05-03 2021-09-21 Tti (Macao Commercial Offshore) Limited Blade
USD862185S1 (en) * 2019-06-19 2019-10-08 Shenzhen Yihong Technology Co., Ltd Tool blade
WO2021067382A1 (fr) * 2019-10-01 2021-04-08 Milwaukee Electric Tool Corporation Lame destinée à un outil électrique
US11925993B2 (en) * 2020-01-27 2024-03-12 Black & Decker Inc. Accessories for oscillating power tools
US11919100B2 (en) 2020-02-25 2024-03-05 The Black & Decker Corporation Accessories for oscillating power tools
USD1002318S1 (en) * 2020-02-26 2023-10-24 Robert Bosch Gmbh Tool accessory
USD962027S1 (en) 2020-04-23 2022-08-30 Milwaukee Electric Tool Corporation Blade
WO2022108785A1 (fr) 2020-11-18 2022-05-27 Milwaukee Electric Tool Corporation Accessoire pour un outil électrique oscillant
USD932271S1 (en) * 2021-01-12 2021-10-05 Kaiyuan Xu Multitool saw blade

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DE20308797U1 (de) * 2003-05-28 2003-08-28 C & E Fein Gmbh & Co Kg Säge mit einer drehoszillierenden Antriebsbewegung und Sägeblatt hierfür

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WO2003028966A2 (fr) * 2001-09-29 2003-04-10 Black & Decker Inc. Outils electriques et lames associees utilisees avec lesdits outils
DE20308797U1 (de) * 2003-05-28 2003-08-28 C & E Fein Gmbh & Co Kg Säge mit einer drehoszillierenden Antriebsbewegung und Sägeblatt hierfür

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Also Published As

Publication number Publication date
CN103764328A (zh) 2014-04-30
US10799968B2 (en) 2020-10-13
US20140325855A1 (en) 2014-11-06
EP3708284A1 (fr) 2020-09-16
CN103764328B (zh) 2017-06-09
DE102011082228A1 (de) 2013-03-07
WO2013034344A1 (fr) 2013-03-14

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