EP1358969A2 - Ueberlastschutz für drehende Werkzeugmaschine - Google Patents
Ueberlastschutz für drehende Werkzeugmaschine Download PDFInfo
- Publication number
- EP1358969A2 EP1358969A2 EP03405287A EP03405287A EP1358969A2 EP 1358969 A2 EP1358969 A2 EP 1358969A2 EP 03405287 A EP03405287 A EP 03405287A EP 03405287 A EP03405287 A EP 03405287A EP 1358969 A2 EP1358969 A2 EP 1358969A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- clutch
- overload
- coupling
- control electronics
- overload protection
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Definitions
- the invention relates to overload protection for a rotating machine tool, especially for a portable core drilling machine for concrete.
- the torque that occurs in a handheld power tool recorded by control electronics and, if necessary, the drive train via a Magnetic coupling separated from the electric motor.
- the object of the invention is to realize a space-saving, for high Contact forces and torques dimensioned overload protection for a portable, rotating machine tool.
- the overload clutch is advantageous as a pre-tensioned, friction-locked ratchet clutch trained, further advantageous with axially displaceable by a coupling path in the event of overload Coupling parts, which enables a compact design.
- the clutch sensor is advantageous as a further advantageous contactless displacement sensor trained, which is available as standard.
- the magnetic coil of the magnetic coupling is advantageous for generating the bias voltage Ratchet clutch formed by at least one component of this generated magnetic coupling force acts along the coupling path of the ratchet clutch, whereby no separate spring means are required for the ratchet clutch and the Bias is controllable by the control electronics.
- the ratchet clutch advantageously has static friction surfaces that run obliquely to the axial surface on, whereby with a given pre-tension mediates the static friction Limit torque can be increased compared to a flat axial surface.
- the circumferential angle of inclination of the static friction surfaces relative to the axial surface is advantageous between 20 ° and 50 °, further advantageously about 35 °, whereby the limit torque to about can be increased four times compared to a flat axial surface.
- the driving magnetic coupling part advantageously forms with the driven one Magnetic coupling part as well as the coupling parts of the ratchet coupling, whereby the Ratchet clutch is formed by the magnetic clutch.
- control electronics are advantageous in the event of a disconnection or after a time limit Disconnection of the electric motor from the power supply reset, whereby then when the electric motor is restarted, the work string through the Magnetic clutch is initially closed.
- overload protection has a portable machine tool one in the drive train between an electric motor 1 and one via a transmission 2 at least partially rotating tool holder 3 with a core drill bit 4 arranged magnetic coupling 5, which is connected to control electronics 6, the in the event of a torque-dependent overload, the drive train via the magnetic coupling 5 up to a reset.
- the drive train is an automatic one torque-dependent overload clutch 7 available, the overload Driveline disconnecting clutch state from a non-contact Clutch sensor 8 is detectable.
- the overload clutch 7 is a biased frictionally engaged ratchet clutch, which is overloaded by a Torque M has a coupling path X axially displaceable coupling parts 7a, 7b.
- the magnetic coil 9 of the magnetic coupling 5 generates a magnetic coupling force F along the Coupling path X of the ratchet coupling, which forms the preload.
- the Ratchet coupling points to the axial surface at an angle of inclination ⁇ of 35 ° Static friction surfaces 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Protection Of Generators And Motors (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
Claims (10)
- Überlastschutz einer transportablen Werkzeugmaschine mit einer im Antriebsstrang zwischen einem Elektromotor (1) und einer zumindest teilweise drehenden Werkzeugaufnahme (3) angeordneten Magnetkupplung (5), welche mit einer Steuerelektronik (6) verbunden ist, die bei drehmomentabhängiger Überlast den Antriebsstrang über die Magnetkupplung (5) bis zu einem Rücksetzen auftrennt, dadurch gekennzeichnet, dass im Antriebsstrang eine selbsttätige drehmomentabhängige Überlastkupplung (7) vorhanden ist, deren bei Überlast den Antriebsstrang auftrennender Kupplungszustand von einem Kupplungssensor (8) detektierbar ist, welcher mit der Steuerelektronik (6) verbunden ist.
- Überlastschutz nach Anspruch 1, dadurch gekennzeichnet, dass die Überlastkupplung (7) als vorgespannte, haftreibschlüssige Ratschenkupplung ausgebildet ist.
- Überlastschutz nach Anspruch 2, dadurch gekennzeichnet, dass die haftreibschlüssige Ratschenkupplung mit bei Überlast um einen Kupplungsweg (X) axial versetzbaren Kupplungsteilen (7a, 7b) ausgebildet ist.
- Überlastschutz nach Anspruch 3, dadurch gekennzeichnet, dass der Kupplungssensor (8) als, optional berührungsloser, Wegsensor ausgebildet ist.
- Überlastschutz nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass eine Magnetspule (9) der Magnetkupplung (5) zur Erzeugung der Vorspannung der Ratschenkupplung ausgebildet ist, indem zumindest eine Komponente der von dieser erzeugten Magnetkupplungskraft (F) längs des Kupplungswegs (X) der Ratschenkupplung wirkt.
- Überlastschutz nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Ratschenkupplung zur Axialfläche schräg verlaufende Haftreibflächen (10) aufweist, deren umfänglicher Neigungswinkel (α) zur Axialfläche, optional zwischen 20° und 50°, weiter optional 35° beträgt.
- Überlastschutz nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die versetzbaren Kupplungsteile (7a, 7b) der Ratschenkupplung die durch die Magnetspule (9) steuerbaren Magnetkupplungsteile der Magnetkupplung (5) ausbilden.
- Steuerverfahren eines Überlastschutzes nach einem der vorherigen Ansprüche, wobei ausgehend von einem initial geschlossenem Arbeitsstrang in einem ersten Schritt von der Steuerelektronik (6) eine drehmomentabhängige Überlast detektiert wird und in einem zweiten Schritt von der Steuerelektronik (6) der Arbeitsstrang über die Magnetkupplung (5) solange geöffnet wird, bis in einem dritten Schritt die Steuerelektronik (6) zurückgesetzt wird, dadurch gekennzeichnet, dass im ersten Schritt der sich durch Überlast ändernde Kupplungszustand der Überlastkupplung (7) kontinuierlich oder wiederholt diskret von der Steuerelektronik (6) über den Kupplungssensor (8) erfasst wird.
- Steuerverfahren nach Anspruch 8, dadurch gekennzeichnet, dass nach dem Öffnen des Arbeitsstrangs durch die Magnetkupplung (5) von der Steuerelektronik (6) der Elektromotor (1) aktiv abgebremst wird.
- Steuerverfahren nach Anspruch 8, dadurch gekennzeichnet, dass die Steuerelektronik (6) bei einer Trennung bzw. zeitbegrenzt nach einer Trennung des Elektromotors (1) von der Stromversorgung zurückgesetzt wird und dass optional initial zeitbegrenzt entweder nach dem Neustart des Elektromotors (1) über den Kupplungssensor (8) der Kupplungszustand bezüglich des vollständigen Einkuppelns überwacht wird oder alternativ ein gegenläufiger Neustart des Elektromotors (1) erfolgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10219755 | 2002-05-02 | ||
DE10219755A DE10219755A1 (de) | 2002-05-02 | 2002-05-02 | Überlastschutz für eine drehende Werkzeugmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1358969A2 true EP1358969A2 (de) | 2003-11-05 |
EP1358969A3 EP1358969A3 (de) | 2006-08-02 |
EP1358969B1 EP1358969B1 (de) | 2008-04-16 |
Family
ID=28798983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03405287A Expired - Lifetime EP1358969B1 (de) | 2002-05-02 | 2003-04-23 | Überlastschutz für drehende Werkzeugmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6863165B2 (de) |
EP (1) | EP1358969B1 (de) |
AT (1) | ATE392296T1 (de) |
DE (2) | DE10219755A1 (de) |
ES (1) | ES2301777T3 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007101686A1 (de) * | 2006-03-09 | 2007-09-13 | Deprag Schulz Gmbh U. Co | Kupplung und motorisch angetriebenes drehwerkzeug mit drehmomentbegrenzer |
EP2096330A1 (de) * | 2006-12-21 | 2009-09-02 | Positec Power Tools (Suzhou) Co., Ltd. | Kraftbetriebenes werkzeug |
EP2447010A1 (de) * | 2010-10-28 | 2012-05-02 | HILTI Aktiengesellschaft | Steuerungsverfahren für eine Werkzeugmaschine und eine Werkzeugmaschine |
EP2517839A3 (de) * | 2011-04-27 | 2013-12-04 | HILTI Aktiengesellschaft | Werkzeugmaschine und Steuerungsverfahren |
EP2777880A3 (de) * | 2013-03-13 | 2015-04-08 | Panasonic Intellectual Property Management Co., Ltd. | Elektrisches Werkzeug |
CN108415366B (zh) * | 2018-03-05 | 2021-01-29 | 高邑县云发专用机床厂 | 基于伺服技术的切削深度反馈方法及智能切削方法及系统 |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10309012B3 (de) * | 2003-03-01 | 2004-08-12 | Hilti Ag | Steuerverfahren einer axial schlagenden und drehenden Elektrohandwerkzeugmaschine |
DE102005010129A1 (de) * | 2004-03-05 | 2005-09-15 | Marquardt Gmbh | Elektrische Schaltungsanordnung für ein Elektrowerkzeug |
EP1690638A1 (de) * | 2005-02-09 | 2006-08-16 | BLACK & DECKER INC. | Getriebe eines kraftbetriebenen Werkzeugs und Drehmoment-Überlastkupplung dafür |
JP4742613B2 (ja) * | 2005-02-24 | 2011-08-10 | マックス株式会社 | ドリル工具 |
DE102005037254A1 (de) * | 2005-08-08 | 2007-02-15 | Robert Bosch Gmbh | Elektrowerkzeugmaschine sowie Überlastschutzvorrichtung |
DE102007000524A1 (de) * | 2007-10-18 | 2009-04-23 | Hilti Aktiengesellschaft | Elektrohandwerkzeugmaschine mit Motortemperaturkontrolle |
SE532395C2 (sv) * | 2008-05-08 | 2010-01-12 | Atlas Copco Tools Ab | Kraftverktyg för åtdragning av skruvförband samt frikoppling |
US8276280B2 (en) * | 2008-09-16 | 2012-10-02 | Republic Of Korea (Management: Rural Development Administration) | Electromotion trim scissors |
DE102008050670B4 (de) * | 2008-10-08 | 2020-03-12 | Chr. Mayr Gmbh + Co Kg | Überlastkupplung mit Messeinheit und drahtloser Kommunikation |
JP5537055B2 (ja) | 2009-03-24 | 2014-07-02 | 株式会社マキタ | 電動工具 |
JP5534783B2 (ja) * | 2009-11-10 | 2014-07-02 | 株式会社マキタ | 電動工具 |
CN102770248B (zh) * | 2010-03-31 | 2015-11-25 | 日立工机株式会社 | 电动工具 |
EP2935944B1 (de) * | 2012-12-19 | 2016-11-02 | Schaeffler Technologies AG & Co. KG | Entkoppler zur dämpfung einer drehmomentübertragung zwischen einer antriebswelle eines kraftfahrzeugs und einer riemenscheibe |
EP3023200A1 (de) * | 2014-11-20 | 2016-05-25 | HILTI Aktiengesellschaft | Steuerungsverfahren für einen Bohrhammer |
EP3112087A1 (de) * | 2015-06-30 | 2017-01-04 | HILTI Aktiengesellschaft | Handwerkzeugmaschine mit sicherheitskupplung |
CN108370152B (zh) | 2015-12-14 | 2020-03-06 | 米沃奇电动工具公司 | 电动工具中的过载检测 |
CN107442797B (zh) * | 2017-03-17 | 2018-12-21 | 涡阳凯达机械制造有限公司 | 一种钻孔机 |
WO2019000379A1 (zh) * | 2017-06-30 | 2019-01-03 | 深圳和而泰智能控制股份有限公司 | 电子离合器及电动工具 |
US11529725B2 (en) | 2017-10-20 | 2022-12-20 | Milwaukee Electric Tool Corporation | Power tool including electromagnetic clutch |
WO2019084280A1 (en) | 2017-10-26 | 2019-05-02 | Milwaukee Electric Tool Corporation | RECLINING CONTROL METHODS FOR ELECTRIC TOOLS |
DE202019005356U1 (de) * | 2018-10-25 | 2020-04-23 | Linak A/S | Aktuatorsystem |
US10654695B1 (en) * | 2018-11-21 | 2020-05-19 | Goodrich Corporation | Clutch assembly for detecting and measuring slip using proximity sensors |
EP3756823A1 (de) * | 2019-06-27 | 2020-12-30 | Hilti Aktiengesellschaft | Verfahren zur erkennung eines zustands einer werkzeugmaschine, sowie eine werkzeugmaschine |
US11641102B2 (en) | 2020-03-10 | 2023-05-02 | Smart Wires Inc. | Modular FACTS devices with external fault current protection within the same impedance injection module |
CN114453619B (zh) * | 2022-01-07 | 2023-02-28 | 上海工程技术大学 | 一种用于保护钻头的装置 |
CN114850535B (zh) * | 2022-03-21 | 2023-07-04 | 上海工程技术大学 | 一种测振动实现磁动调节的钻头保护装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3240304A (en) * | 1963-08-23 | 1966-03-15 | Bendix Corp | Magnetic overload clutch device |
DE3128410A1 (de) * | 1981-07-17 | 1983-02-03 | Hilti AG, 9494 Schaan | Bewertungsschaltung fuer ein elektrisches drehmomentsignal an einer bohrmaschine |
US4776406A (en) * | 1985-11-19 | 1988-10-11 | Robert Bosch Gmbh | Motor-driven hand tool for drilling or impact drilling operations |
DE4119941A1 (de) * | 1991-06-17 | 1993-01-07 | Frischmuth & Freitag Diamant U | Verfahren und anordnung zum schutz eines elektrischen antriebsmotors eines elektrowerkzeugs |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2351240C3 (de) * | 1973-10-12 | 1981-06-19 | Robert Bosch Gmbh, 7000 Stuttgart | Überlastkupplung |
US4257147A (en) * | 1979-04-17 | 1981-03-24 | White Consolidated Industries, Inc. | Overload clutch for the feed roll of a carding machine |
DE2921032C2 (de) * | 1979-05-23 | 1981-09-17 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Vorrichtung zum Überwachen des Schaltzustandes einer schaltbaren Kupplung |
NL9101335A (nl) * | 1991-08-02 | 1993-03-01 | Emerson Electric Co | Transmissie voor elektrisch aangedreven gereedschap. |
DE4344849A1 (de) * | 1993-12-29 | 1995-07-06 | Fein C & E | Werkzeugmaschine |
-
2002
- 2002-05-02 DE DE10219755A patent/DE10219755A1/de not_active Withdrawn
-
2003
- 2003-04-23 DE DE50309612T patent/DE50309612D1/de not_active Expired - Lifetime
- 2003-04-23 AT AT03405287T patent/ATE392296T1/de active
- 2003-04-23 EP EP03405287A patent/EP1358969B1/de not_active Expired - Lifetime
- 2003-04-23 ES ES03405287T patent/ES2301777T3/es not_active Expired - Lifetime
- 2003-04-28 US US10/424,316 patent/US6863165B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3240304A (en) * | 1963-08-23 | 1966-03-15 | Bendix Corp | Magnetic overload clutch device |
DE3128410A1 (de) * | 1981-07-17 | 1983-02-03 | Hilti AG, 9494 Schaan | Bewertungsschaltung fuer ein elektrisches drehmomentsignal an einer bohrmaschine |
US4776406A (en) * | 1985-11-19 | 1988-10-11 | Robert Bosch Gmbh | Motor-driven hand tool for drilling or impact drilling operations |
DE4119941A1 (de) * | 1991-06-17 | 1993-01-07 | Frischmuth & Freitag Diamant U | Verfahren und anordnung zum schutz eines elektrischen antriebsmotors eines elektrowerkzeugs |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007101686A1 (de) * | 2006-03-09 | 2007-09-13 | Deprag Schulz Gmbh U. Co | Kupplung und motorisch angetriebenes drehwerkzeug mit drehmomentbegrenzer |
EP2096330A1 (de) * | 2006-12-21 | 2009-09-02 | Positec Power Tools (Suzhou) Co., Ltd. | Kraftbetriebenes werkzeug |
EP2096330A4 (de) * | 2006-12-21 | 2013-04-24 | Positec Power Tools Suzhou Co | Kraftbetriebenes werkzeug |
EP2447010A1 (de) * | 2010-10-28 | 2012-05-02 | HILTI Aktiengesellschaft | Steuerungsverfahren für eine Werkzeugmaschine und eine Werkzeugmaschine |
CN102528770A (zh) * | 2010-10-28 | 2012-07-04 | 喜利得股份公司 | 用于工具设备的控制方法和工具设备 |
US8833484B2 (en) | 2010-10-28 | 2014-09-16 | Hilti Aktiengesellschaft | Control method for a power tool and a power tool |
EP2517839A3 (de) * | 2011-04-27 | 2013-12-04 | HILTI Aktiengesellschaft | Werkzeugmaschine und Steuerungsverfahren |
US9126321B2 (en) | 2011-04-27 | 2015-09-08 | Hilti Aktiengesellschaft | Machine tool and control procedure |
EP2777880A3 (de) * | 2013-03-13 | 2015-04-08 | Panasonic Intellectual Property Management Co., Ltd. | Elektrisches Werkzeug |
US9452520B2 (en) | 2013-03-13 | 2016-09-27 | Panasonic Intellectual Property Management Co., Ltd. | Electric power tool |
CN108415366B (zh) * | 2018-03-05 | 2021-01-29 | 高邑县云发专用机床厂 | 基于伺服技术的切削深度反馈方法及智能切削方法及系统 |
Also Published As
Publication number | Publication date |
---|---|
ATE392296T1 (de) | 2008-05-15 |
ES2301777T3 (es) | 2008-07-01 |
DE50309612D1 (de) | 2008-05-29 |
US20030221928A1 (en) | 2003-12-04 |
EP1358969A3 (de) | 2006-08-02 |
US6863165B2 (en) | 2005-03-08 |
DE10219755A1 (de) | 2003-11-13 |
EP1358969B1 (de) | 2008-04-16 |
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