EP0525438A1 - Scie circulaire portative à moteur pour travail manuel - Google Patents

Scie circulaire portative à moteur pour travail manuel Download PDF

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Publication number
EP0525438A1
EP0525438A1 EP92111315A EP92111315A EP0525438A1 EP 0525438 A1 EP0525438 A1 EP 0525438A1 EP 92111315 A EP92111315 A EP 92111315A EP 92111315 A EP92111315 A EP 92111315A EP 0525438 A1 EP0525438 A1 EP 0525438A1
Authority
EP
European Patent Office
Prior art keywords
circular saw
saw blade
base plate
guide rail
sliding
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.)
Granted
Application number
EP92111315A
Other languages
German (de)
English (en)
Other versions
EP0525438B1 (fr
Inventor
Rainer Dipl.-Ing. Schilling
Wolfgang Fuchs
Claus Dipl.-Ing. Kemmner
Heribert Dipl.-Ing. Schramm (Fh)
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 EP0525438A1 publication Critical patent/EP0525438A1/fr
Application granted granted Critical
Publication of EP0525438B1 publication Critical patent/EP0525438B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B27B9/00—Portable power-driven circular saws for manual operation
    • B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting

Definitions

  • the invention relates to a portable circular saw according to the preamble of claim 1.
  • a generic circular saw is known from US Pat. No. 3,977,080. This is pivotable with respect to a base plate about a physical axis parallel to the base plate and to the saw blade level for making oblique or miter cuts.
  • the base plate has a continuous U-shaped groove on its underside. With the groove, the base plate can reach over the guide rib of a guide rail and can be moved on the guide rail along its longitudinal edges. This enables a guided feed for the circular saw.
  • the outer edge of the guide rail which runs normal to the workpiece surface, must be positioned adjacent to the saw blade.
  • bevel cuts approximately 45 ° cuts, the outer edge, which is at an acute angle to the workpiece plane, must be positioned adjacent to the saw blade.
  • the hand-held circular saw according to the invention with the characterizing features of claim 1 has the advantage that a hand-held circular saw was created while maintaining a physical pivot axis and thus all of its advantages with a slight additional constructional and manufacturing effort, which is, however, less than with hand-held circular saws with a non-physical pivot axis the particular robustness and high accuracy are combined with each other and which is easy to handle, whereby there is a single, common tool engagement line for all swivel angle positions. This prevents accidental damage to the guide rail when the saw blade is swiveled, and the clamping retention function is ensured in any case.
  • FIG. 1 shows a schematic representation of the side view of a first embodiment of the circular saw according to the invention with the saw blade in the normal position
  • FIG. 2 shows the same embodiment in the 45 "position of the saw blade
  • FIG. 3 shows a second embodiment of the circular saw according to the invention in the normal position in the same representation of the saw blade
  • Figure 4 shows the same embodiment in the 45 ° position of the saw blade.
  • a hand-held circular saw 1 shown in a side view in FIG. 1 consists of a motor housing 3, a motor (not shown) arranged therein, which is connected to a saw shaft 5.
  • a saw blade 7 sits on the saw shaft S and is secured in position with a nut 9.
  • the motor housing 3 is seated on a frame-like swivel bridge 11.
  • the swivel bridge 11 carries a physical swivel axis 13 in a rotationally fixed manner and is pivotably connected to a base plate 15 via this.
  • the pivot axis 13 is held in a bearing block 17 seated on the base plate 15 in an elongated hole 19, the longitudinal dimension of which extends transversely to the feed direction.
  • the pivot axis 13 is rotatable and slidably supported by a certain stroke H.
  • the slot 19 is slightly longer than the stroke H.
  • the tool engagement line 20 is shown as a point.
  • the base plate 15 is supported on a guide rail 21 and engages over the guide rip pe 23 with a u-shaped groove 25.
  • the swivel bridge 11 On the side opposite the swivel axis 13, the swivel bridge 11 carries a screw bolt 27 which acts as a sliding sliding block and which engages through a push-swivel guide track 29 of a sliding link plate 31 arranged fixedly on the base plate 15. By means of the screw bolt 27, the swivel bridge 11 can be locked in any swivel position between 90 "and 45 ° on the sliding link plate 31 via a wing nut 33.
  • the motor housing 3 is arranged together with the saw blade 7 for the adjustment of the cutting depth up and down on the swivel bridge 11, the arrangement not being shown in detail.
  • FIG. 2 shows the side view of the hand-held circular saw 1 according to FIG. 1 in the 45 "position of the saw blade 7.
  • the pivot bridge 11 with the screw bolt 27 is pivoted as far as it will go against the upper end of the push-pivot guide track 29 of the sliding link plate 31
  • the pivot axis 13 is displaced in the slot 19 of the bearing block 17 at the extreme left edge thereof.
  • stroke H counteracts the unintentional displacement P of the tool engagement line 20 by the same amount.
  • the stroke H thus compensates for the displacement P, which is calculated from the tangent function of the swivel angle ⁇ and the height h of the swivel axis above the workpiece surface:
  • FIG. 3 of a further exemplary embodiment of a hand-held circular saw 41 consists of a motor housing 43, a motor (not shown) arranged therein, which is connected to a saw shaft 45.
  • a saw blade 47 with a nut 49 is screwed onto the saw shaft 45.
  • the motor housing 43 is seated on a frame-like swivel bridge 51.
  • This rotatably carries a physical swivel axis 53 designed as a pin or shaft, via which it is pivotably connected to a base plate 55.
  • the base plate 55 and the pivot axis 53 are connected to one another in a bearing block 57 seated on the base plate 55 in its bore 59.
  • the pivot axis 51 is rotatably held in the bore 59.
  • the base plate 55 rests on a guide rail 61.
  • the swivel bridge 51 On the side opposite the swivel axis 53, the swivel bridge 51 carries a screw bolt 67 which passes through a swivel guide track 69 of a swivel link plate 71 arranged fixed on the base plate 55.
  • the swivel bridge 51 can be locked in any swivel position between 90 ° and 45 ° on the swivel guide link plate 71 by means of the screw bolt 67 via a wing nut 73.
  • the motor housing 43 is arranged together with the saw blade 47 so that it can be swiveled up and down on the swivel bridge 51, the arrangement not being shown in detail.
  • the swing bridge 51 carries a thrust sliding block 75 approximately in the middle, which is positively guided in a push-pivot guide track 77 of a sliding link plate 79.
  • the sliding link plate 79 overlaps with a u-shaped part 81 a guide rib 63 of the guide rail 61, on which the base plate 55 of the circular saw 41 is supported.
  • the sliding link plate 79 is displaceable on the base plate 55 at least by the amount of the stroke H and secured against falling out, this arrangement not being shown in detail.
  • FIG. 4 shows the side view of the hand-held circular saw 41 according to FIG. 3, in the 45 ° position of the saw blade.
  • the swivel bridge 51 with the sliding sliding block 75 is pivoted to the upper end of the push-swivel guide track 77 of the sliding link plate 79.
  • the pivot axis 53 is moved together with the bearing block 57 relative to the guide rail 61 in an extreme left position.
  • stroke H is carried out parallel to the base plate with the same amount, but in the opposite direction of the unab Visible displacement P of the tool engagement line 60.
  • a locking device is arranged between the screw bolt and the guideway or the sliding sliding block and the push-swivel guideway, so that if the double arrangement of the link plates is not shown, but is recommended for better stability, the motor housing with the circular saw blade is skewed is avoided when swiveling.
  • a base corresponding to the thickness of the guide rail is releasably attached to the underside of the base plate because the stroke H is calculated such that it displaces the tool engagement line at one of the thickness of the guide rail corresponding distance of the workpiece surface from the bottom of the base plate.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
EP92111315A 1991-07-22 1992-07-03 Scie circulaire portative à moteur pour travail manuel Expired - Lifetime EP0525438B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124233A DE4124233A1 (de) 1991-07-22 1991-07-22 Handkreissaege
DE4124233 1991-07-22

Publications (2)

Publication Number Publication Date
EP0525438A1 true EP0525438A1 (fr) 1993-02-03
EP0525438B1 EP0525438B1 (fr) 1995-05-24

Family

ID=6436724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111315A Expired - Lifetime EP0525438B1 (fr) 1991-07-22 1992-07-03 Scie circulaire portative à moteur pour travail manuel

Country Status (3)

Country Link
US (1) US5271155A (fr)
EP (1) EP0525438B1 (fr)
DE (2) DE4124233A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034218A1 (fr) * 2012-07-30 2016-06-22 Mafell AG Machine d'usinage

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4300033B4 (de) * 1993-01-02 2005-02-24 Robert Bosch Gmbh Handkreissäge mit Gehrungswinkel-Einstellvorrichtung
US6202311B1 (en) * 1999-07-30 2001-03-20 Black & Decker Inc. Circular saw with bevel angle adjustment mechanism
JP3710683B2 (ja) * 1999-12-16 2005-10-26 株式会社マキタ 携帯マルノコ
DE10342154A1 (de) * 2003-09-12 2005-04-07 Robert Bosch Gmbh Grundplatte für ein Elektrowerkzeug und Verfahren zur Herstellung derselben
US20100269353A1 (en) 2009-04-24 2010-10-28 Martin Charles B Portable cutting device with on-board debris collection
US7328512B2 (en) * 2004-09-14 2008-02-12 Martin Charles B Self-contained vacuum saw
CN1745946B (zh) * 2005-09-30 2010-09-08 苏州宝时得电动工具有限公司 电圆锯
US8276281B2 (en) * 2005-09-30 2012-10-02 Positec Power Tools (Suzhou) Co., Ltd. Circular saw
EP2121622A1 (fr) * 2007-02-01 2009-11-25 Glaxo Group Limited Inhibiteurs du transporteur glyt1 et leurs utilisations dans le traitement de troubles neurologiques et neuropsychiatriques
US7958641B1 (en) * 2007-05-09 2011-06-14 Woodman Tools, Llc Rolling plate assembly attachment for portable power cutting tools including an improved structural design and manufactured out of improved materials, an improved wheel configuration, and an adjustable bevel gear and a cutting guide
GB0719802D0 (en) * 2007-10-04 2007-11-21 Black & Decker Inc A Power tool
US9168188B2 (en) 2007-11-13 2015-10-27 Orthopediatrics Corporation Cast removal system
US8479401B2 (en) * 2010-06-15 2013-07-09 Robert Bosch Gmbh Power tool with virtual pivot
GB201102368D0 (en) * 2011-02-10 2011-03-30 7Rdd Ltd Powered circular saw and method of use thereof
CN102814549B (zh) * 2011-06-07 2014-09-10 苏州宝时得电动工具有限公司 用于手持式切割机的导向附件、手持式切割机、切割系统
DE102018125423B4 (de) * 2018-10-15 2020-11-05 Metabowerke Gmbh Werkzeugmaschinensystem
US20230158706A1 (en) * 2020-06-25 2023-05-25 Festool Gmbh Circular saws including transparent windows that extend within blade guard openings and cover fastening structures
EP4247579A1 (fr) * 2020-11-23 2023-09-27 Milwaukee Electric Tool Corporation Ensemble scie à guide
WO2024095828A1 (fr) * 2022-11-01 2024-05-10 工機ホールディングス株式会社 Machine-outil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743056C (de) * 1942-03-28 1943-12-17 Festo Maschf Stoll G Handkreissaege
DE834897C (de) * 1949-11-01 1952-03-24 Eugen Lutz Holzbearbeitungsmas Kreissaege mit Motorantrieb, die beim Arbeiten von Hand angesetzt und gefuehrt wird und deren Saegeblatt durch Schwenken des Motorgehaeuses in auf einer Grundplatte vorgesehenen Zapfenlagern schraeg gestellt werden kann
US2839098A (en) * 1956-12-28 1958-06-17 Millers Falls Co Cut-line indicator for portable circular saw
US3977080A (en) * 1975-07-30 1976-08-31 Joseph Paul Allaire Cutting guide for power handsaw

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262472A (en) * 1964-05-08 1966-07-26 Black & Decker Mfg Co Depth and bevel adjustment means for portable power-driven saw
US4290464A (en) * 1980-03-20 1981-09-22 Mario Marsan Holder for portable electric cutting instrument
GB2096942B (en) * 1981-04-21 1985-05-01 Albery William Saw
JPS6040202A (ja) * 1983-08-13 1985-03-02 松下電工株式会社 電動丸鋸
GB2182280A (en) * 1985-09-20 1987-05-13 Lawborough Consultants Improvements in or relating to guide apparatus for cutting tools
JPH0737782Y2 (ja) * 1989-12-15 1995-08-30 日立工機株式会社 電気丸鋸のベース傾斜機構
US5010651A (en) * 1990-07-10 1991-04-30 Skil Corporation Portable circular saw
US4999916A (en) * 1990-08-17 1991-03-19 Ryobi Motor Products Corp. Circular saw base angle adjustment mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743056C (de) * 1942-03-28 1943-12-17 Festo Maschf Stoll G Handkreissaege
DE834897C (de) * 1949-11-01 1952-03-24 Eugen Lutz Holzbearbeitungsmas Kreissaege mit Motorantrieb, die beim Arbeiten von Hand angesetzt und gefuehrt wird und deren Saegeblatt durch Schwenken des Motorgehaeuses in auf einer Grundplatte vorgesehenen Zapfenlagern schraeg gestellt werden kann
US2839098A (en) * 1956-12-28 1958-06-17 Millers Falls Co Cut-line indicator for portable circular saw
US3977080A (en) * 1975-07-30 1976-08-31 Joseph Paul Allaire Cutting guide for power handsaw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034218A1 (fr) * 2012-07-30 2016-06-22 Mafell AG Machine d'usinage

Also Published As

Publication number Publication date
EP0525438B1 (fr) 1995-05-24
US5271155A (en) 1993-12-21
DE59202310D1 (de) 1995-06-29
DE4124233A1 (de) 1993-01-28

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