EP2654999A1 - Lame de scie pour une scie sauteuse - Google Patents

Lame de scie pour une scie sauteuse

Info

Publication number
EP2654999A1
EP2654999A1 EP11785655.9A EP11785655A EP2654999A1 EP 2654999 A1 EP2654999 A1 EP 2654999A1 EP 11785655 A EP11785655 A EP 11785655A EP 2654999 A1 EP2654999 A1 EP 2654999A1
Authority
EP
European Patent Office
Prior art keywords
edge
saw blade
saw
jigsaw
protective
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.)
Withdrawn
Application number
EP11785655.9A
Other languages
German (de)
English (en)
Inventor
Aldo Di Nicolantonio
Michael Laett
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 EP2654999A1 publication Critical patent/EP2654999A1/fr
Withdrawn legal-status Critical Current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
    • B23D61/128—Sabre 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
    • B23D61/123—Details of saw blade body

Definitions

  • the invention relates to a saw blade for a jigsaw according to the preamble of claim 1.
  • Hand-held jigs or lifting saws have a motor-operated lifting rod, which performs a vertical up and down movement and to which a fastening device a saw blade is attached.
  • the jigsaw has a base plate, which rests on the workpiece surface during workpiece machining. At the front of the base plate - lying in the feed direction - there is a recess through which the saw blade is passed.
  • such jigsaws usually have a protective device on top of the base plate, which is located in front of the saw blade, to prevent accidental contact during the up and down movement rising above the base plate top sawing edge of the saw blade.
  • a protective device on top of the base plate, which is located in front of the saw blade, to prevent accidental contact during the up and down movement rising above the base plate top sawing edge of the saw blade.
  • wire bow between the base plate and the overlying housing of the jigsaw are known.
  • the protective devices can impair the ergonomic handling of the jigsaw.
  • the visibility on the interface in the workpiece is limited, also the pivoting of the foot plate can be difficult.
  • the protective device is usually part of the device and may only be removed together with the tool. This process is relatively cumbersome to perform for the operator.
  • the invention is based on the object with simple measures to increase safety against accidental contact with the saw edge of a jigsaw blade above the base plate of the jigsaw.
  • the saw blade according to the invention is suitable for use in puncture or lifting saws, in which the saw blade executes an up and down, linear saw movement during workpiece machining.
  • Such jigs or lifting saws have a base plate or foot plate, which is connected to the housing of the saw and rests in the workpiece machining on the upper side of the workpiece. In the base plate a recess is introduced, through which the saw blade is passed.
  • the saw blade is on a motor driven
  • Attached lifting rod of the saw and is offset via the lifting rod in the up and down working movement.
  • the saw blade has at its front edge a sawing edge with saw teeth, which extends according to the invention only over a partial length of the front edge.
  • the sawing edge is the free end face, which faces away in the mounted state of the lifting rod of the saw, adjacent, so that the sawing edge extends with the saw teeth only over the lower portion of the saw blade.
  • the saw edge is located exclusively below the top of the base plate. Even at top dead center, the saw teeth of the saw edge do not reach beyond the top of the base plate and thus can not endanger the operator. This makes it possible to dispense with additional protective devices in the front region of the saw, in particular between the front of the base plate and the housing for covering the saw blade.
  • the guiding of the saw, in particular along straight cutting lines, is improved.
  • the protective edge At the provided with the saw teeth sawing edge joins in the direction of the mounting portion of the saw blade tooth-free protective edge whose length is dimensioned so that extends in the installed state, even at top dead center of the saw blade, the protective edge at least up to the top of the base plate. Even with an accidental contact with the protective edge during the working movement of the saw blade injury is excluded or at least largely reduced.
  • the protective edge is expediently rectilinear, it is optionally rounded off to the feed direction in order to reduce the risk of injury as far as possible.
  • the protective edge offset relative to the saw edge, and offset in relation to the stroke direction and the feed direction of the saw blade in the transverse direction and / or with respect to the feed direction to the front. But it is also possible, the protective edge in such a way that the forward in the feed direction side of the protective edge is exactly in line or in extension with the tooth tips of the saw teeth of the saw edge.
  • Lifting rod of the jigsaw can be connected, the saw edge is arranged offset according to a further advantageous embodiment in the feed direction of the jigsaw forward.
  • the saw blade has seen in the feed direction, a flat design, wherein for connection between the mounting portion and both offset forward and downward saw edge advantageously a plurality of connecting webs are provided which extend in particular transversely to the longitudinal axis and between which recesses may lie.
  • the connecting webs ensure a sufficiently rigid connection between the fastening section and the front edge of the saw blade, and on the other hand a comparatively low weight of the saw blade is ensured on account of the intermediate recesses.
  • the connecting webs extend in particular between a trailing edge of the saw blade, with which the fixing portion is in line, and the front edge in the region of the protective edge, wherein, if necessary, can also extend into the region of the saw edge connecting webs.
  • the connecting webs may be inclined at an angle of, for example, 30 ° to an orthogonal to the longitudinal axis of the saw blade.
  • FIG. 1 shows a jigsaw with an inserted saw blade, shown in the bottom dead center of the saw blade
  • Fig. 3 in an individual view of a saw blade for a jigsaw whose leading edge is composed of a saw edge with saw teeth and a protective edge without saw teeth.
  • FIGS. 1 and 2 In the hand-held, electrically operated saw 1 shown in FIGS. 1 and 2 is a puncture or lifting saw with a housing 2, in which an electric drive motor is accommodated, which drives a lifting rod 3 via a gear on the a saw blade 5 is releasably secured via a fastening device 4.
  • the lifting rod 3 including the saw blade 5 attached thereto performs with respect to the feed direction 7 of the jigsaw 1 an orthogonal or vertically directed up and down stroke movement.
  • a foot or base plate 6 is provided, which is connected to the housing 2 of the jigsaw 1 and rests on the workpiece surface on the workpiece surface.
  • the base plate 6 has, in the forward direction in the feed direction 7 area a recess through which the saw blade 5 is passed.
  • the saw blade 5 moves due to the up and down movement of the lifting rod 3 between the bottom dead center shown in Fig. 1 and the top dead center shown in Fig. 2.
  • the front edge of the saw blade 5 is in the mounted state adjacent to the front of the base plate. 6
  • the saw blade 5 has a web-shaped fastening section 8, via which the saw blade is to be connected by means of the fastening device 4 to the lifting rod 3.
  • the attachment portion 8 is located on the axially opposite the side of the free end face or tip 9 of the saw blade, which is directed away in the assembled state of the base plate 6.
  • the front edge - with respect to the feed direction 7 - of the saw blade 5 is composed of a saw edge 10, which extends from the free end face 9 starting, and a protective edge 1 1 together, which connects directly to the saw edge 10 with the saw teeth.
  • the entire front edge of the saw blade consists of the saw edge 10 and the protective edge 1 1.
  • the length ratio between the saw edge 10 and the protective edge 1 1 is dimensioned so that in the mounted state, the saw edge 10 even at top dead center (Fig Top of the base plate 6 protrudes, but extends exclusively below the base plate or into the wisdomplatten Scheme inside.
  • the length of the saw edge 10 is slightly greater than the length of the protective edge 1 1.
  • At top dead center is only the protective edge 11, which has no saw teeth, above the base plate 6. This makes it possible to protectors in the front of the jigsaw 1 dispense, which should otherwise prevent accidental touching the saw edge above the base plate 6.
  • the attachment portion 8 is located in extension of the trailing edge of the saw blade 5 and is offset parallel to the front edge.
  • a number of connecting webs 12 are provided which are spaced apart, so that intermediate, parallel recesses 13 between each two connecting webs 12 are formed.
  • the connecting webs 12 extend transversely to the leading edge or trailing edge of the saw blade 5, however, they are inclined at an angle of at most 30 ° relative to an orthogonal to the leading edge or trailing edge.
  • the connecting webs 12 extend from the upper end side of the protective edge 11, which is opposite the lower, free end face 9, over the entire axial region of the protective edge 11 into the region of the sawing edge 10. Starting from the free end face 9, the sawing edge 10 is connected to an arcuate connecting portion with the lower end side of the trailing edge.

Landscapes

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

Abstract

L'invention concerne une lame de scie pour une scie sauteuse, ladite lame comportant une arête de sciage qui s'étend sur une longueur partielle du bord d'attaque de la lame de scie, l'arête de sciage étant adjacente à la face frontale libre de la lame de scie, et une arête de protection dépourvue de dents étant agencée dans le prolongement axial de l'arête de sciage.
EP11785655.9A 2010-12-22 2011-11-17 Lame de scie pour une scie sauteuse Withdrawn EP2654999A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010063935 DE102010063935A1 (de) 2010-12-22 2010-12-22 Sägeblatt für eine Stichsäge
PCT/EP2011/070302 WO2012097896A1 (fr) 2010-12-22 2011-11-17 Lame de scie pour une scie sauteuse

Publications (1)

Publication Number Publication Date
EP2654999A1 true EP2654999A1 (fr) 2013-10-30

Family

ID=45002944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11785655.9A Withdrawn EP2654999A1 (fr) 2010-12-22 2011-11-17 Lame de scie pour une scie sauteuse

Country Status (4)

Country Link
EP (1) EP2654999A1 (fr)
CN (1) CN103260805A (fr)
DE (1) DE102010063935A1 (fr)
WO (1) WO2012097896A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013004983U1 (de) * 2013-06-03 2014-05-21 Kwb Tools Gmbh Werkzeug zum spanenden Bearbeiten eines Werkstücks sowie Werkzeugmaschine
USD844984S1 (en) 2017-01-27 2019-04-09 Milwaukee Electric Tool Corporation Wrench case

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388904B (de) * 1987-09-25 1989-09-25 Heid Ag Maschf Palette zur bereitstellung, zur aufnahme und zum transport von werkstuecken
DE4025259A1 (de) * 1990-08-09 1992-02-13 Ackermann & Schmitt Gmbh & Co Saegeblatt fuer eine motorgetriebene stichsaege
JPH1044101A (ja) * 1996-08-05 1998-02-17 Ask:Kk 切断装置
US5855158A (en) * 1997-08-07 1999-01-05 Donofrio; Thomas H. Modified roofing, shingle, and siding removal saw blade
DE29720605U1 (de) * 1997-11-21 1999-03-25 Scintilla Ag, Solothurn Sägeblatt für eine, insbesondere oszillierende, Sägemaschine
DE19753952C2 (de) * 1997-12-05 2003-06-26 Stahlwerk Ergste Westig Gmbh Sägeband oder -blatt
US6149510A (en) * 1999-03-02 2000-11-21 Romagnoli; Brian A. Abrading blade
DE29914569U1 (de) * 1999-08-19 1999-12-23 Bender, Dieter, 76831 Birkweiler Stichsägeblatt
DE29916244U1 (de) * 1999-09-15 2000-01-05 Chiang, Chin-Kun, Pingtung Sägeblatt
CN1608774A (zh) * 2003-10-20 2005-04-27 Gmca有限公司 用于工具构件的夹具以及改进的卷曲机构
DE102008055074A1 (de) * 2008-12-22 2010-06-24 Robert Bosch Gmbh Führungsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012097896A1 *

Also Published As

Publication number Publication date
WO2012097896A1 (fr) 2012-07-26
CN103260805A (zh) 2013-08-21
DE102010063935A1 (de) 2012-06-28

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