EP0525438B1 - 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
EP0525438B1
EP0525438B1 EP92111315A EP92111315A EP0525438B1 EP 0525438 B1 EP0525438 B1 EP 0525438B1 EP 92111315 A EP92111315 A EP 92111315A EP 92111315 A EP92111315 A EP 92111315A EP 0525438 B1 EP0525438 B1 EP 0525438B1
Authority
EP
European Patent Office
Prior art keywords
swivel
hand
circular saw
held circular
slotted
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.)
Expired - Lifetime
Application number
EP92111315A
Other languages
German (de)
English (en)
Other versions
EP0525438A1 (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 overlap 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 is easy to handle, with 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 exemplary embodiment of the circular saw according to the invention with the saw blade in the normal position
  • FIG. 2 shows the same exemplary embodiment in the 45 ° position of the saw blade
  • FIG. 3 shows a second exemplary 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 its guide rib 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.
  • the swivel bridge 11 can be locked in any swivel position between 90 ° and 45 ° on the sliding link plate 31 by means of the screw bolt 27 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 circular saw 1 according to FIG. 1 in the 45 ° position of the saw blade 7.
  • the swivel bridge 11 is pivoted with the screw bolt 27 up to the stop on the upper end of the push-swivel 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 far left edge thereof.
  • the saw blade is lifted when swiveling in the following way: After loosening the wing nut 33, the circular saw 1 can be moved about the pivot axis 13 and can be locked in any pivot position with respect to the base plate 15. When pivoting, the screw bolt 27 undergoes a translation as a result of the curvature of the push-pivot guide track 29, in addition to the rotation about the pivot axis 13. This is transferred to the saw blade 7 via the swing bridge 11.
  • the translation path referred to as the stroke H is countered to the unintentional displacement P of the tool engagement line 20 by the same amount.
  • the side view shown in 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.
  • the latter 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 is 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 into an extreme left position.
  • the saw blade is swung in the following way: After loosening the wing nut 73, the hand-held circular saw 41 can be moved about the pivot axis 53 and can be locked in any pivot position with respect to the base plate 55.
  • the thrust slide block 75 undergoes a translation as a result of the curvature of the push-swivel guide track 77, in addition to the rotation about the swivel axis 73. This is transferred to the saw blade 47 via the swing bridge 51.
  • the translation referred to as stroke H takes place parallel to the base plate with the same amount, but in the opposite direction of the unintentional displacement P of the tool engagement line 60.
  • a latching 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 so 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.

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

Claims (12)

  1. Scie circulaire à main (1, 41) entraînée par un moteur, avec un carter de moteur (3, 43), un moteur qui y est installé, qui coopère avec un arbre de scie (5, 45) avec une lame de scie qui y est fixée (7, 47) et avec une plaque de base (15, 55) qui présente un profilé de guidage en forme de rainure (25) en prise de préférence au moins en partie par le rail de guidage (21, 61) pour l'avance guidée de la scie circulaire à main (1, 41) notamment sur un rail de guidage (21, 61) et qui est blocable dans la tôle de coulissement (31, 71) et pivotable autour d'un axe de pivotement matérialisé (13, 53) exécuté de préférence parallèlement à la plaque de base (15, 55) et au plan de la lame de scie (4, 47) pour réaliser des chanfreins et des onglets, et est solidaire de la scie circulaire à main (1, 41) lors d'une inclinaison involontaire la ligne de prise de l'outil (20, 60) de la lame de scie (7, 47) se déplace parallèlement transversalement à l'axe de pivotement (13, 53), caractérisée en ce que par pivotement de la plaque de base (15, 55) par rapport à la lame de scie (7, 47), la lame de scie (7, 47) est déplacée en sens inverse d'une course (H) proportionnelle à l'angle de rotation correspondant transversalement au sens d'avance et au déplacement intempestif de la ligne de prise de l'outil.
  2. Scie circulaire à main selon la revendication 1, caractérisée en ce que la course H a une valeur identique au déplacement intempestif de la ligne de prise de l'outil (20, 60).
  3. Scie circulaire à main selon la revendication 1, caractérisée en ce que par pivotement de la lame de scie (7, 47), celle-ci est déplacée en même temps que l'axe de pivotement (13, 53) parallèlement à la plaque de base (15, 55).
  4. Scie circulaire à main selon l'une des revendications précédentes, caractérisée en ce qu'on réalise la course H par un guidage du coulisseau.
  5. Scie circulaire à main selon la revendication 4, caractérisée en ce que le guidage du coulisseau est constitué d'une piste de guidage de pivotement (29, 77) réalisée dans une tôle de coulissement (31, 79), dans laquelle est guidé un coulisseau (27, 75), le coulisseau (27, 75) est fixé aux parties pivotantes de la scie circulaire à main (1, 41) portant la lame de scie (7, 47).
  6. Scie circulaire à main selon les revendications 3 à 5, caractérisée en ce que l'axe de pivotement (13) sous forme d'un d'arbre ou d'un tourillon est logé en rotation et en coulissement dans un support transversalement à l'avance sous forme de trou oblong (19) et qu'on peut bloquer la lame de scie (7) dans sa position inclinée sur une tôle de coulissement (31) fixée sur la plaque de base (15).
  7. Scie circulaire à main selon la revendication 6, caractérisée en ce qu'un goujon fileté servant de coulisseau (27) muni d'un écrou à oreilles (33) est guidé de préférence en encliquetage dans la piste de guidage de pivotement (29) de la tôle de coulissement (31), de sorte qu'on peut régler la position inclinée par petits intervalles.
  8. Scie circulaire selon les revendications 4 et 5, caractérisée en ce que la lame de scie (47), son support et les parties portantes, notamment réalisées sous forme de pont pivotant (11) et de carter de moteur (3) et au moins une partie de la plaque de base (55) sont déplacés transversalement à l'avance par rapport à la tôle de coulissement (79) reposant sur le rail de guidage (61).
  9. Scie circulaire à main selon la revendication 8, caractérisée en ce qu'une tôle de coulissement (79) s'appuie sur la nervure de guidage (63) du rail de guidage (61) transversalement à l'avance et qu'une tôle de coulissement (71) est placée sur la plaque de base (55) pour définir l'angle d'inclinaison.
  10. Scie circulaire à main selon la revendication 9, caractérisée en ce que l'écrou à oreille (73) ou le goujon fileté (67) sont guidés de préférence en encliquetage sur la tôle de coulissement (71), de sorte qu'on puisse fixer à petits intervalles les positions de l'angle d'inclinaison.
  11. Scie circulaire à main selon l'une des revendications précédentes, caractérisée en ce que les tôles de coulissement de poussée ou de pivotement (31, 71, 79) ainsi qu'un support (17, 57) sont implantés en double vus dans le sens d'avance en avant et en arrière de la lame de scie (7, 47).
  12. Scie circulaire à main selon l'une des revendications précédentes, caractérisée en ce qu'on fixe de manière amovible une base correspondant à l'épaisseur du rail de guidage (21, 61) à la face inférieure de la plaque de base (15, 55), de préférence pour travailler sans rail de guidage (21, 61).
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
DE4124233 1991-07-22
DE4124233A DE4124233A1 (de) 1991-07-22 1991-07-22 Handkreissaege

Publications (2)

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

Families Citing this family (21)

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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
US7328512B2 (en) * 2004-09-14 2008-02-12 Martin Charles B Self-contained vacuum saw
US20100269353A1 (en) 2009-04-24 2010-10-28 Martin Charles B Portable cutting device with on-board debris collection
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
JP2010517959A (ja) * 2007-02-01 2010-05-27 グラクソ グループ リミテッド ＧｌｙＴ１トランスポーター阻害薬および神経学的および神経精神病学的障害の治療におけるその使用
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
DE102012213383A1 (de) * 2012-07-30 2014-01-30 Mafell Ag Bearbeitungsmaschine
DE102018125423B4 (de) * 2018-10-15 2020-11-05 Metabowerke Gmbh Werkzeugmaschinensystem
EP4171907A1 (fr) * 2020-06-25 2023-05-03 Festool GmbH Scies circulaires avec ensembles verrous
EP4247579A1 (fr) * 2020-11-23 2023-09-27 Milwaukee Electric Tool Corporation Ensemble scie à guide
US12083613B2 (en) 2022-10-18 2024-09-10 Techtronic Cordless Gp Track saw including plunge lockout mechanism
WO2024095828A1 (fr) * 2022-11-01 2024-05-10 工機ホールディングス株式会社 Machine-outil

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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
US3262472A (en) * 1964-05-08 1966-07-26 Black & Decker Mfg Co Depth and bevel adjustment means for portable power-driven saw
US3977080A (en) * 1975-07-30 1976-08-31 Joseph Paul Allaire Cutting guide for power handsaw
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

Also Published As

Publication number Publication date
DE4124233A1 (de) 1993-01-28
DE59202310D1 (de) 1995-06-29
US5271155A (en) 1993-12-21
EP0525438A1 (fr) 1993-02-03

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