DE3427733A1 - Circular saw with a run-down brake - Google Patents

Circular saw with a run-down brake

Info

Publication number
DE3427733A1
DE3427733A1 DE19843427733 DE3427733A DE3427733A1 DE 3427733 A1 DE3427733 A1 DE 3427733A1 DE 19843427733 DE19843427733 DE 19843427733 DE 3427733 A DE3427733 A DE 3427733A DE 3427733 A1 DE3427733 A1 DE 3427733A1
Authority
DE
Germany
Prior art keywords
circular saw
saw blade
run
electric motor
brake
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Withdrawn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
DE19843427733
Other languages
German (de)
Inventor
Dieter 7440 Nürtingen Raichle
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.)
Karl M Reich Maschinenfabrik GmbH
Original Assignee
Karl M Reich Maschinenfabrik 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 Karl M Reich Maschinenfabrik GmbH filed Critical Karl M Reich Maschinenfabrik GmbH
Priority to DE19843427733 priority Critical patent/DE3427733A1/en
Publication of DE3427733A1 publication Critical patent/DE3427733A1/en
Withdrawn legal-status Critical Current

Links

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
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/38—Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing

Abstract

For braking the circular saw blade (4) in circular saws in the run-down phase, a braking device (6) is provided which can be actuated by an electromagnet (7) and the brake shoe (9) of which interacts with the circular saw blade (4). The braking device (6) is thus reliably released as the electric motor (3) is switched on and the operator can concentrate fully on his work. After the electric motor (3) is switched off, he is protected from injury by virtue of the relatively short run-down time of the circular saw blade (4). <IMAGE>

Description

-'JL--'JL-

25. Juli 1984July 25, 1984

Karl M. Reich,. Maschinenfabrik GmbH, 7440 NürtingenKarl M. Reich ,. Maschinenfabrik GmbH, 7440 Nürtingen

Kreissäge mit AuslaufbremseCircular saw with run-out brake

Die Erfindung betrifft eine Kreissäge mit Auslaufbremse gemäß Oberbegriff von Anspruch 1.The invention relates to a circular saw with a run-out brake according to the preamble of claim 1.

Dazu ist es aus der US-PS 3 224 474 bei einer Handkreissäge bekannt, das Sägeblatt nach dem Abschalten des Elektromotors in der Auslauf-und Ruhephase durch einen Bremsschuh zu bremsen, der unter Wirkung einer Feder auf eine mit dem Elektromotor verbundene Bremstrommel drückt. Es besteht eine mechanische. Verbindung zwischen Einschaltdrücker und Bremse, so daß diese gelöst wird, wenn der Elektromotor über den Einschaltdrücker eingeschaltet wird.For this purpose, it is known from US Pat. No. 3,224,474 for a circular saw to open the saw blade after switching off the Electric motor in the coasting and resting phase to be braked by a brake shoe, which is under the action of a spring presses on a brake drum connected to the electric motor. There is a mechanical one. connection between Switch-on pushbutton and brake, so that this is released when the electric motor is switched on via the switch-on pushbutton will.

Dabei muß natürlich die Kraft der Druckfeder durch den Finger des Bedxenungsmannes überwunden werden und diese Kraft wirkt auch während der gesamten Betriebsphase der Maschine. Für den Bedienungsmann bedeutet dies eine unangenehme und ermüdende Belastung. Außerdem ist eine -» gesonderte Bremstrommel vorgesehen, die einen zusätzlichen Aufwand und Verteuerung der Maschine bedeutet„Of course, the force of the compression spring must be overcome by the operator's finger and this Force also acts during the entire operating phase of the machine. For the operator, this means an inconvenient and tiring stress. In addition, a - »separate brake drum is provided, which has an additional The effort and cost of the machine means "

Aufgabe der vorliegenden Erfindung ist daher die Schaffung einer Kreissäge mit Aus lauf bremse, die ein sichreres Abbremsen des Sägeblatts beim Auslauf ohne Beanspruchung des Bedxenungsmannes erlaubt.The object of the present invention is therefore to create a circular saw with brake from running that is safer The saw blade can be slowed down when it runs out without straining the operator.

Diese Aufgabe wird erfindungsgemäß durch das im kennzeichnenden Teil von Anspruch 1 angegebene Merkmal gelöst.This object is achieved according to the invention by the in the characterizing Part of claim 1 specified feature solved.

Die Bremse wird damit zuverlässig zusammen mit dem Einschalten des Elektromotors gelöst und der Bedienungsmann kann sich voll auf seine Arbeit konzentrieren.The brake is thus reliably released when the electric motor is switched on, and so is the operator can concentrate fully on his work.

Da die Bremsbacke direkt auf das Kreissägeblatt drückt/ ist keine gesonderte Bremstrommel notwendig, die gesamte Maschine wird damit einfacher und billigereSince the brake shoe presses directly on the circular saw blade / no separate brake drum is necessary This makes the entire machine simpler and cheaper

Die erfindungsgemäße Vorrichtung läßt sich vorteilhafterweise bei Handkreissägen verwenden, es ist jedoch auch möglich, sie an stationären Kreissägen anzubringen.The device according to the invention can advantageously be used in hand-held circular saws, but it is also possible to attach them to stationary circular saws.

Es ergibt sich eine geringe Auslaufzeit des Sägeblatts und besonders bei stationären Tischkreissägen ein größerer Schutz vor Verletzungen des Bedienungsmanns.This results in a short run-down time for the saw blade and, especially with stationary table saws, greater protection against injury to the operator.

Im folgenden ist ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnung näher beschrieben, die den Teil einer Handkreissäge mit Auslaufbremse schematisch darstellt*The following is an embodiment of the invention described in more detail with reference to the drawing, the part of a circular saw with run-out brake schematically represents *

Hei der schematisch dargestellten Handkreissäge ist in eir.eir. Gehäuse 1 mit Schutzhaube 2 ein Elektromotor 3 gelagert, der ein Kreissägeblatt 4 antreibt. Der Elektromotor 3 ist durch einen von Hand bedienbaren Schalter 5 ein- und ausschaltbar»Hei of the hand-held circular saw shown schematically is in eir.eir. Housing 1 with protective cover 2, an electric motor 3 stored, which drives a circular saw blade 4. The electric motor 3 is controlled by a switch 5 that can be operated manually can be switched on and off »

An der Schutzhaube 2 ist eine Bremsvorrichtung 6 für das Kreissägeblatt 4 vorgesehen, in^dem ein Elektromagnet 7 so an der Schutzhaube 2 angebracht ist, daß ein Magnet-A braking device 6 for the Circular saw blade 4 provided in which an electromagnet 7 is attached to the protective hood 2 in such a way that a magnetic

kern 8 die Schutzhaube durchdringt und an seinem dem Kreissägeblatt 4 zugekehrten Ende mit einem. Bremsbacken mit Bremsbelag 10 versehen ist- -core 8 penetrates the protective hood and at its end facing the circular saw blade 4 with a. Brake shoes is provided with brake lining 10 -

Eine Druckfeder 11 ist so zwischen Schutzhaube 2 und Bremsbacken 9 angeordnet, daß sie den Bremsbelag bei ausgeschaltetem Elektromotor gegen das Kreissägeblatt 4 drückt.A compression spring 11 is arranged between the protective hood 2 and the brake shoes 9 that they the brake lining at switched off electric motor presses against the circular saw blade 4.

Die Magnetspule des Elektromagneten 7 ist nun elektrisch so mit dem Schalter 5 verbunden, daß der Magnetkern 8 beim Einschalten der Maschine angezogen wird. Damit wird das Kreissägeblatt 4 frei und kann vom Elektromotor 3 angetrieben werden. Nach dem Ausschalten des Elektromotos 3 wird auch der Elektromagnet 7 gleichzeitig ausgeschaltet, der Bremsbacken 9 legt sich unter Wirkung der Druckfeder 11 gegen das Kreissägeblatt und bremst dieses sicher ab.The magnetic coil of the electromagnet 7 is now electrically connected to the switch 5 in such a way that the magnetic core 8 is tightened when the machine is switched on. The circular saw blade 4 is thus free and can be operated by the electric motor 3 are driven. After switching off the electric motor 3, the electromagnet 7 is also switched off at the same time, the brake shoe 9 lies under the action of the compression spring 11 against the circular saw blade and brakes it safely.

Claims (3)

25. Juli 1984 Reg. Nr. 2.38 O / ο π η ο ο PATENTANSPRÜCHEJuly 25, 1984 Reg. No. 2.38 O / ο π η ο ο PATENT CLAIMS 1) Kreissäge mit Auslaufbremse mit einem Gehäuse mit Elektromotor zum Antrieb eines Kreissägeblatts und mit einer am Gehäuse angeordneten Bremsvorrichtung, die das Kreissägeblatt in seiner Auslauf- und Ruhephase abbremst, dadurch gekennzeichnet , daß die Bremsvorrichtung (6) durch einen Elektromagnet (7) betätigbar ist»1) Circular saw with run-out brake with a housing with Electric motor for driving a circular saw blade and with a braking device arranged on the housing, which slows down the circular saw blade in its run-out and resting phase, characterized that the braking device (6) can be actuated by an electromagnet (7) » 2) Kreissäge nach Anspruch 1 , dadurch gekenn zeichnet, daß der Elektromagnet (7) so mit dem Elektromotor (3) elektrisch verbunden ist, daß er beim Einschalten des Elektromotors ebenfalls unter Spannung gesetzt wird und die Bremse (9) löst«2) circular saw according to claim 1, characterized in that the electromagnet (7) so with the electric motor (3) is electrically connected that it is also under when the electric motor is switched on Voltage is applied and the brake (9) releases « 3) Kreissäge nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Bremsvorrichtung (6) mit dem Kreissägeblatt (4) zusammenwirkt,3) circular saw according to claim 1 or 2, characterized in that the braking device (6) cooperates with the circular saw blade (4),
DE19843427733 1984-07-27 1984-07-27 Circular saw with a run-down brake Withdrawn DE3427733A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843427733 DE3427733A1 (en) 1984-07-27 1984-07-27 Circular saw with a run-down brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843427733 DE3427733A1 (en) 1984-07-27 1984-07-27 Circular saw with a run-down brake

Publications (1)

Publication Number Publication Date
DE3427733A1 true DE3427733A1 (en) 1986-01-30

Family

ID=6241730

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843427733 Withdrawn DE3427733A1 (en) 1984-07-27 1984-07-27 Circular saw with a run-down brake

Country Status (1)

Country Link
DE (1) DE3427733A1 (en)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6813983B2 (en) * 2000-09-29 2004-11-09 Sd3, Llc Power saw with improved safety system
US6826988B2 (en) 2000-09-29 2004-12-07 Sd3, Llc Miter saw with improved safety system
US6877410B2 (en) * 2000-09-29 2005-04-12 Sd3, Llc Miter saw with improved safety system
US6945148B2 (en) * 2000-09-29 2005-09-20 Sd3, Llc Miter saw with improved safety system
US7024975B2 (en) * 2000-08-14 2006-04-11 Sd3, Llc Brake mechanism for power equipment
US7055417B1 (en) * 1999-10-01 2006-06-06 Sd3, Llc Safety system for power equipment
DE102005008628A1 (en) * 2005-02-25 2006-08-31 Stefan Frey Circular saw has saw blade rotatable by hydraulic drive circuit and a brake device which during braking separates pressure flow consumer from pressure line
US7640837B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Table saw with improved safety system
US7644645B2 (en) 2002-01-16 2010-01-12 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US20100050836A1 (en) * 2008-08-28 2010-03-04 Juergen Seidel Machine tool protective device
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US7712403B2 (en) * 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US7789002B2 (en) 2000-09-29 2010-09-07 Sd3, Llc Table saw with improved safety system
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US7845258B2 (en) 2003-08-20 2010-12-07 Sd3, Llc Brake cartridges for power equipment
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US8011279B2 (en) 2000-08-14 2011-09-06 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US8061246B2 (en) 2002-01-14 2011-11-22 Sd3, Llc Miter saw with improved safety system
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
DE102013002039A1 (en) * 2013-02-07 2014-08-07 Binderberger Maschinenbau Gmbh Double drive for working machine e.g. circular saw for use in agriculture or forestry, has mechanical brake that is connected to motor and is switched on by operating control device to halt working machine
AT515954A1 (en) * 2014-07-10 2016-01-15 Binderberger Maschb Gmbh Double drive with rapid shutdown
JP2016210004A (en) * 2015-04-29 2016-12-15 日立工機株式会社 Bench cutting machine
US9724840B2 (en) * 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US10118308B2 (en) 2013-10-17 2018-11-06 Sawstop Holding Llc Systems to mount and index riving knives and spreaders in table saws
US11098849B2 (en) 2016-05-31 2021-08-24 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
CN115768610A (en) * 2020-07-01 2023-03-07 费斯托工具有限责任公司 Safety brake for circular saw blade, circular saw including the safety brake, and method of operating the circular saw

Cited By (66)

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Publication number Priority date Publication date Assignee Title
US7788999B2 (en) 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
US8408106B2 (en) 1999-10-01 2013-04-02 Sd3, Llc Method of operating power equipment with detection and reaction systems
US8291797B2 (en) 1999-10-01 2012-10-23 Sd3, Llc Table saw with improved safety system
US8196499B2 (en) 1999-10-01 2012-06-12 Sd3, Llc Power equipment with detection and reaction systems
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US7055417B1 (en) * 1999-10-01 2006-06-06 Sd3, Llc Safety system for power equipment
US10335972B2 (en) 1999-10-01 2019-07-02 Sawstop Holding Llc Table Saws
US9969014B2 (en) 1999-10-01 2018-05-15 Sawstop Holding Llc Power equipment with detection and reaction systems
US9522476B2 (en) 1999-10-01 2016-12-20 Sd3, Llc Power equipment with detection and reaction systems
US9724840B2 (en) * 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US7661343B2 (en) 1999-10-01 2010-02-16 Sd3, Llc Brake mechanism for power equipment
US9925683B2 (en) 1999-10-01 2018-03-27 Sawstop Holding Llc Table saws
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US8191450B2 (en) 2000-08-14 2012-06-05 Sd3, Llc Power equipment with detection and reaction systems
US8151675B2 (en) 2000-08-14 2012-04-10 Sd3, Llc Logic control for fast-acting safety system
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US8490527B2 (en) 2000-08-14 2013-07-23 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US7640837B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Table saw with improved safety system
US8011279B2 (en) 2000-08-14 2011-09-06 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US8522655B2 (en) 2000-08-14 2013-09-03 Sd3, Llc Logic control for fast-acting safety system
US7024975B2 (en) * 2000-08-14 2006-04-11 Sd3, Llc Brake mechanism for power equipment
US9038515B2 (en) 2000-08-14 2015-05-26 Sd3, Llc Logic control for fast-acting safety system
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US6826988B2 (en) 2000-09-29 2004-12-07 Sd3, Llc Miter saw with improved safety system
US6877410B2 (en) * 2000-09-29 2005-04-12 Sd3, Llc Miter saw with improved safety system
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US6945148B2 (en) * 2000-09-29 2005-09-20 Sd3, Llc Miter saw with improved safety system
US6813983B2 (en) * 2000-09-29 2004-11-09 Sd3, Llc Power saw with improved safety system
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US7789002B2 (en) 2000-09-29 2010-09-07 Sd3, Llc Table saw with improved safety system
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US7712403B2 (en) * 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US8061246B2 (en) 2002-01-14 2011-11-22 Sd3, Llc Miter saw with improved safety system
US8430005B2 (en) 2002-01-14 2013-04-30 Sd3, Llc Miter saw with improved safety system
US7644645B2 (en) 2002-01-16 2010-01-12 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7845258B2 (en) 2003-08-20 2010-12-07 Sd3, Llc Brake cartridges for power equipment
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US8087438B2 (en) 2003-12-31 2012-01-03 Sd3, Llc Detection systems for power equipment
US9623498B2 (en) 2003-12-31 2017-04-18 Sd3, Llc Table saws
US8489223B2 (en) 2003-12-31 2013-07-16 Sd3, Llc Detection systems for power equipment
US8122807B2 (en) 2003-12-31 2012-02-28 Sd3, Llc Table saws with safety systems
US8498732B2 (en) 2003-12-31 2013-07-30 Sd3, Llc Detection systems for power equipment
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US7827893B2 (en) 2003-12-31 2010-11-09 Sd3, Llc Elevation mechanism for table saws
US7866239B2 (en) 2003-12-31 2011-01-11 Sd3, Llc Elevation mechanism for table saws
US10052786B2 (en) 2004-01-29 2018-08-21 Sawstop Holding Llc Table saws with safety systems and systems to mount and index attachments
US8505424B2 (en) 2004-01-29 2013-08-13 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US10882207B2 (en) 2004-01-29 2021-01-05 Sawstop Holding Llc Table saws with safety systems and systems to mount and index attachments
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
DE102005008628A1 (en) * 2005-02-25 2006-08-31 Stefan Frey Circular saw has saw blade rotatable by hydraulic drive circuit and a brake device which during braking separates pressure flow consumer from pressure line
DE102005008628B4 (en) * 2005-02-25 2008-05-15 Stefan Frey Circular saw with hydraulic drive
US20100050836A1 (en) * 2008-08-28 2010-03-04 Juergen Seidel Machine tool protective device
DE102013002039B4 (en) * 2013-02-07 2014-12-11 Binderberger Maschinenbau Gmbh Double drive with rapid shutdown
DE102013002039A1 (en) * 2013-02-07 2014-08-07 Binderberger Maschinenbau Gmbh Double drive for working machine e.g. circular saw for use in agriculture or forestry, has mechanical brake that is connected to motor and is switched on by operating control device to halt working machine
US10118308B2 (en) 2013-10-17 2018-11-06 Sawstop Holding Llc Systems to mount and index riving knives and spreaders in table saws
AT515954B1 (en) * 2014-07-10 2016-03-15 Binderberger Maschb Gmbh Double drive with rapid shutdown
AT515954A1 (en) * 2014-07-10 2016-01-15 Binderberger Maschb Gmbh Double drive with rapid shutdown
JP2016210004A (en) * 2015-04-29 2016-12-15 日立工機株式会社 Bench cutting machine
US11098849B2 (en) 2016-05-31 2021-08-24 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
US11940095B2 (en) 2016-05-31 2024-03-26 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
CN115768610A (en) * 2020-07-01 2023-03-07 费斯托工具有限责任公司 Safety brake for circular saw blade, circular saw including the safety brake, and method of operating the circular saw

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