DE3119573A1 - Circular cross-cut saw - Google Patents

Circular cross-cut saw

Info

Publication number
DE3119573A1
DE3119573A1 DE19813119573 DE3119573A DE3119573A1 DE 3119573 A1 DE3119573 A1 DE 3119573A1 DE 19813119573 DE19813119573 DE 19813119573 DE 3119573 A DE3119573 A DE 3119573A DE 3119573 A1 DE3119573 A1 DE 3119573A1
Authority
DE
Germany
Prior art keywords
saw blade
saw
guard
bearing arm
segment
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
DE19813119573
Other languages
German (de)
Other versions
DE3119573C2 (en
Inventor
Reinhard 4800 Bielefeld Ueberschär
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.)
Hanning Elektro Werke GmbH and Co KG
Original Assignee
Hanning Elektro Werke GmbH and Co KG
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 Hanning Elektro Werke GmbH and Co KG filed Critical Hanning Elektro Werke GmbH and Co KG
Priority to DE19813119573 priority Critical patent/DE3119573C2/en
Publication of DE3119573A1 publication Critical patent/DE3119573A1/en
Application granted granted Critical
Publication of DE3119573C2 publication Critical patent/DE3119573C2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/02—Screens or other safety members moving in synchronism with members which move to and fro
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws

Abstract

A circular cross-cut saw has a safety guard (5) for the rotating saw blade (2) pivotably mounted in a perpendicular plane. The safety guard (5) is closed except for the requisite working section of the saw blade (2) and is fastened to a bearing arm (6) pivotable on the machine frame (1). The working section left free by this safety guard (5) is covered by means of a guard segment (9) when the saw blade (2) is lifted out of its working position. The guard segment (9) is in turn moved about the saw-blade axis (8) under the action of a control rod (10). In order to accelerate the closing movements of the guard segment (9) and thereby increase the operating safety of the circular cross-cut saw in accordance with the regulations, the control rod (10), at its end remote from the guard segment (9), acts on an articulated lever (11) which starts from the machine frame (1) and is connected in its centre area to the bearing arm (6) of the saw blade (2) via a curved guide (12). Consequently, the desired rapid closing of the guard segment (9) is obtained when the saw blade (2) is lifted by pivoting the bearing arm (6). <IMAGE>

Description

KappsägeChop saw

Die Erfindung betrifft eine Kappsäge mit einem in einer senkrechten Ebene schwenkbar gelagerten rotierenden Sägeblatt, dessen Umfang eine bis auf den erforderlichen Arbeitsabschnitt geschlossene, an einem am Maschinenrahmen schwenkbeweglichen Lagerarm befestigte Schutzhaube umgibt, und dessen von dieser Schutzhaube frei gelassener Arbeitsabschnitt beim Anheben des Sägeblattes aus seiner Arbeitsstellung mittels eines von einer Steuerstange um die Sägeblattachse bewegten Haubensegmentes abgedeckt wird.The invention relates to a miter saw with a vertical Level pivoted rotating saw blade, the scope of which is up to the required working section closed, pivotable on a machine frame Bearing arm attached protective hood surrounds, and its left free by this protective hood Working section when lifting the saw blade from its working position by means of a hood segment moved around the saw blade axis by a control rod will.

Bei bekannten Konstruktionen dieser Art ist die das Haubensegment bewegende Steuerstange in einer festen Lagerung am Maschinenrahmen angelenkt. Hieraus entsteht jedoch der Nachteils daß die Öffnungsbewegungen des Haubensegmentes gleichlaufend mit den Schwenkbewegungen des das Sägeblatt sowie die Schutzhaube tragenden Lagerarmes vor sich gehen. Die Folge davon ist ein zu langsames Schließen des Arbeitsabschnittes beim Anheben des Sägeblattes aus seiner Arbeitsstellung, wodurch man auf diese Weise keinen hinreichenden Berührungsschutz des rotierenden Sägeblattes zu erreichen vermag.In known constructions of this type, this is the hood segment moving control rod articulated in a fixed bearing on the machine frame. From this However, there arises the disadvantage that the opening movements of the Hood segment concurrently with the swiveling movements of the saw blade and the protective hood carrying bearing arm go ahead. The consequence of this is that it closes too slowly the working section when lifting the saw blade out of its working position, which in this way does not provide adequate protection against accidental contact with the rotating Able to achieve saw blade.

Aufgabe der Erfindung ist es nun, eine Kappsäge mit schneller schließendem Haubensegment zu schaffen, um die Bedienungssicherheit den Vorschriften entsprechend zu erhöhen.The object of the invention is now to provide a miter saw with a faster closing To create hood segment to ensure operational safety according to the regulations to increase.

Zur Lösung der gestellten Aufgabe schlägt die Erfindung vor, daß die Steuerstange an ihrem dem Haubensegment abgewandten Ende an einem vom Maschinenrahmen ausgehenden Gelenkhebel angreift, der in seinem mittleren Bereich über eine Bogenfuhrung mit dem Lagerarm des Sägeblattes in Verbindung steht.To solve the problem, the invention proposes that the Control rod at its end facing away from the hood segment on one of the machine frame outgoing articulated lever attacks, which in its central area via a bow guide is in connection with the bearing arm of the saw blade.

Ein Ausführungsbeispiel des Anmeldungsgegenstandes wird nachfolgend an Hand der Zeichnung beschrieben. Darin zeigen im einzelnen: Fig. 1 die Seitenansicht einer erfindungsgemäßen Kappsäge in der Arbeitsstellung des Sägeblattes, Fig. 2 dieselbe Seitenansicht der Kappsäge mit aus der Arbeitsstellung angehobenem Sägeblatt, und Fig. 3 eine die Wirkungsweise der Erfindung verdeutlichende graphische Darstellung.An embodiment of the subject of the application is shown below described on the basis of the drawing. These show in detail: FIG. 1 the side view a chop saw according to the invention in the working position of the saw blade, Fig. 2 the same side view of the miter saw with the saw blade raised from the working position, and FIG. 3 shows a graphic representation illustrating the mode of operation of the invention.

Wie aus den Fig. 1 und 2 hervorgeht, ist auf dem Maschinenrahmen 1 eine das mit dem Sägeblatt 2 zu trennende Werkstück 3 aufnehmende Spanneinrichtung 4 befestigt.As can be seen from FIGS. 1 and 2, on the machine frame 1 a clamping device receiving the workpiece 3 to be cut with the saw blade 2 4 attached.

Zur Halterung des Sägeblattes 2 sowie einer dessen Umfang bis auf den Arbeitsabschnitt verschließenden Schutzhaube 5 dient der am Maschinenrahmen 1 schwenkbewegliche Lagerarm 6, der gleichzeitig auch den Antriebsmotor 7 trägt.To hold the saw blade 2 and one of its scope up to The protective hood 5 closing the working section is used on the machine frame 1 pivotable bearing arm 6, which also carries the drive motor 7 at the same time.

Damit beim Anheben des Sägeblattes 2 aus seiner Arbeitsstellung der von der Schutzhaube 5 frei gelassene Arbeitsabschnitt ebenfalls geschlossen wird, ist auf der Sägeblattachse 8 ein entsprechend großes Haubensegment 9 drehbar angeordnet. Von diesem Haubensegment 9 erstreckt sich eine Steuerstange 10 zu einem Gelenkhebel 11, der seinerseits am Maschinenrahmen 1 angreift. In seinem mittleren Bereich steht der Gelenkhebel 11 über eine Bogenführung 12 mit dem Lagerarm 6 des Sägeblattes 2 in Verbindung, so daß sich ein verhältnismäßig schnelles Schließen des Haubensegmentes 9 ergibt, wenn das Sägeblatt 2 durch Verschwenken des Lagerarmes 6 mittels eines gleichzeitig eine Sperrklinke 13 betätigenden Handhebels 14 nach oben bewegt wird.So that when the saw blade 2 is lifted out of its working position the working section left free by the protective hood 5 is also closed, a correspondingly large hood segment 9 is rotatably arranged on the saw blade axis 8. A control rod 10 extends from this hood segment 9 to an articulated lever 11, which in turn engages the machine frame 1. In its middle area stands the articulated lever 11 via an arch guide 12 with the bearing arm 6 of the saw blade 2 in connection, so that a relatively quick closing of the hood segment 9 results when the saw blade 2 by pivoting the bearing arm 6 by means of a hand lever 14 which simultaneously actuates a pawl 13 is moved above.

In Welcher Abhängigkeit die Schließbewegungen des Haubensegmentes 9 vom Weg des Lagerarmes 6 erfolgen, kann man Fig. 3 entnehmen. Die dort abgebildete Bewegungskurve läßt erkennen, daß die Arbeitsöffnung der Schutzhaube 5 bereits zu 50% geschlossen ist, wenn der Lagerarm 6 nur um 100 seines gesamten Schwenkbereichs von insgesamt 350 bewegt wurde. Hat der Schwenkwinkel sodann 250 erreicht, so verdeckt das Haubensegment 9 sogar schon 80% der Arbeitsöffnung der Schutzhaube 5, was der Zielsetzung der Anmeldung entspricht.In what dependency the closing movements of the hood segment 9 take place from the path of the bearing arm 6, can be seen in FIG. The one pictured there The movement curve shows that the working opening of the protective hood 5 is already closed 50% is closed when the bearing arm 6 is only about 100 of its entire pivoting range out of a total of 350 was moved. If the pivot angle has then reached 250, it is covered the hood segment 9 even already 80% of the working opening of the protective hood 5, what the Corresponds to the objective of the registration.

Claims (1)

Kapp säge Anspruch: Kappsäge mit einem in einer senkrechten Ebene schwenkbar gelagerten rotierenden Sägeblatt, dessen Umfang eine bis auf den erforderlichen Arbeitsabschnitt geschlossene, an einem am Maschinenrahmen schwenkbeweglichen Lagerarm befestigte Schutzhaube umgibt, und dessen von dieser Schutzhaube frei gelassener Arbeitsabschnitt beim Anheben des Sägeblattes aus seiner Arbeitsstellung mittels eines von einer Steuerstange um die Sägeblattachse bewegten Haubensegmentes abgedeckt wird, dadurch gekennzeichnet, daß die Steuerstange (10) an ihrem dem Haubensegment (9 ) abgewandten Ende an einem vom Easchinenrahmen (1 ) ausgehenden Gelenkhebel (11) angreift, der in seinem mittleren Bereich über eine Bogenführung (12) mit dem Lagerarm (6 ) des Sägeblattes ( 2 ) in Verbindung steht.Chop saw claim: Chop saw with one in a vertical plane pivotally mounted rotating saw blade, the scope of which is up to the required Working section closed on a bearing arm pivotable on the machine frame attached protective hood surrounds, and its left free by this protective hood Working section when lifting the saw blade from its working position by means of a hood segment moved around the saw blade axis by a control rod is, characterized in that the control rod (10) on its the hood segment (9) facing away from the end on an articulated lever extending from the machine frame (1) (11) attacks, which in its central area via a bow guide (12) with the Bearing arm (6) of the saw blade (2) is in connection.
DE19813119573 1981-05-16 1981-05-16 Chop saw Expired DE3119573C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813119573 DE3119573C2 (en) 1981-05-16 1981-05-16 Chop saw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813119573 DE3119573C2 (en) 1981-05-16 1981-05-16 Chop saw

Publications (2)

Publication Number Publication Date
DE3119573A1 true DE3119573A1 (en) 1982-12-23
DE3119573C2 DE3119573C2 (en) 1984-02-09

Family

ID=6132511

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813119573 Expired DE3119573C2 (en) 1981-05-16 1981-05-16 Chop saw

Country Status (1)

Country Link
DE (1) DE3119573C2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131376A2 (en) * 1983-06-11 1985-01-16 Black & Decker Inc. Chop saw linkage system
EP0407204A2 (en) * 1989-07-07 1991-01-09 Makita Electric Works Ltd Miter saw
EP0538066A1 (en) * 1991-10-18 1993-04-21 Makita Corporation Miter saw
US5638731A (en) * 1993-07-08 1997-06-17 Black & Decker Inc. Chop saw arrangement
US5893311A (en) * 1997-04-28 1999-04-13 Huang; Peter Protective covers of power saw
US6272960B1 (en) 1998-06-03 2001-08-14 Black & Decker Inc. Chop saw
WO2008131849A1 (en) * 2007-04-30 2008-11-06 Metabowerke Gmbh Sawing device with adjustable mounting for the sawing assembly
WO2010130355A1 (en) * 2009-05-11 2010-11-18 Gerhard Weusthof Circular cross-cut saw
CN101402173B (en) * 2007-10-04 2012-04-18 百得有限公司 A power tool
US8776656B2 (en) 2008-07-22 2014-07-15 Gerhard Weusthof Circular and miter box saw

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304032C2 (en) † 1993-02-11 1998-07-23 Heidenhain Gmbh Dr Johannes Angle measuring device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE482312C (en) * 1926-11-21 1929-09-11 Carl Heilmaier Circular saw, the blade of which is covered by protective hoods that open when the workpiece is advanced with the assistance of the workpiece carrier
US1795203A (en) * 1930-06-11 1931-03-03 Arthur Fleischaker Saw guard
US3998121A (en) * 1976-02-03 1976-12-21 B & E Products, Inc. Miter cutting saw

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE482312C (en) * 1926-11-21 1929-09-11 Carl Heilmaier Circular saw, the blade of which is covered by protective hoods that open when the workpiece is advanced with the assistance of the workpiece carrier
US1795203A (en) * 1930-06-11 1931-03-03 Arthur Fleischaker Saw guard
US3998121A (en) * 1976-02-03 1976-12-21 B & E Products, Inc. Miter cutting saw

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Buch: Hauptverband der ge- werblichen Berufsgenossenschaften, Sicherheitsregeln für Gehrungs- kappsägemaschinen, Bestll.-Nr. ZH 1/3,6 Ausgabe 4. 1980 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131376A2 (en) * 1983-06-11 1985-01-16 Black & Decker Inc. Chop saw linkage system
EP0131376A3 (en) * 1983-06-11 1985-12-11 Black & Decker Inc. Chop saw linkage system
EP0407204A2 (en) * 1989-07-07 1991-01-09 Makita Electric Works Ltd Miter saw
EP0407204A3 (en) * 1989-07-07 1991-09-04 Makita Electric Works Ltd Miter saw
EP0538066A1 (en) * 1991-10-18 1993-04-21 Makita Corporation Miter saw
US5638731A (en) * 1993-07-08 1997-06-17 Black & Decker Inc. Chop saw arrangement
US5893311A (en) * 1997-04-28 1999-04-13 Huang; Peter Protective covers of power saw
US6272960B1 (en) 1998-06-03 2001-08-14 Black & Decker Inc. Chop saw
WO2008131849A1 (en) * 2007-04-30 2008-11-06 Metabowerke Gmbh Sawing device with adjustable mounting for the sawing assembly
CN101402173B (en) * 2007-10-04 2012-04-18 百得有限公司 A power tool
US8776656B2 (en) 2008-07-22 2014-07-15 Gerhard Weusthof Circular and miter box saw
WO2010130355A1 (en) * 2009-05-11 2010-11-18 Gerhard Weusthof Circular cross-cut saw

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Publication number Publication date
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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HANNING ELEKTRO-WERKE GMBH & CO, 4811 OERLINGHAUSE

8339 Ceased/non-payment of the annual fee