EP1000712B9 - Foreuse à percussion - Google Patents

Foreuse à percussion Download PDF

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Publication number
EP1000712B9
EP1000712B9 EP99121944A EP99121944A EP1000712B9 EP 1000712 B9 EP1000712 B9 EP 1000712B9 EP 99121944 A EP99121944 A EP 99121944A EP 99121944 A EP99121944 A EP 99121944A EP 1000712 B9 EP1000712 B9 EP 1000712B9
Authority
EP
European Patent Office
Prior art keywords
weight
drill
rod
hammer according
drill hammer
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
EP99121944A
Other languages
German (de)
English (en)
Other versions
EP1000712A2 (fr
EP1000712B1 (fr
EP1000712A3 (fr
Inventor
Peter Ziegler
Stephan Kuchinke
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP1000712A2 publication Critical patent/EP1000712A2/fr
Publication of EP1000712A3 publication Critical patent/EP1000712A3/fr
Publication of EP1000712B1 publication Critical patent/EP1000712B1/fr
Application granted granted Critical
Publication of EP1000712B9 publication Critical patent/EP1000712B9/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/061—Swash-plate actuated impulse-driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0073—Arrangements for damping of the reaction force
    • B25D2217/0076—Arrangements for damping of the reaction force by use of counterweights
    • B25D2217/0088—Arrangements for damping of the reaction force by use of counterweights being mechanically-driven

Definitions

  • the invention relates to a hammer drill according to the preamble of claim 1.
  • wobble drive device is understood to mean a rotation / translation converter device in which the rotational movement of a drive-side element is converted into a linear translational movement of a driven-side element.
  • a rotational element acts on a wobble element, which is referred to below as a swash plate, in such a way that it is driven tilting back and forth and can displace a further element into linear translational motion.
  • a hammer drill of the type described above is known from DE 196 51 828 A1 (Bosch ), or from the DE 3427342 A1 , known.
  • the object of the present invention is to reduce the vibration turbulence which occurs as a result of the mass accelerations or delays in the known rotary hammer and the associated handling difficulties.
  • This weight body forms a kind of counterweight and generates counter-moments to the moving masses and moments occurring as a result of the exciter sleeve movement. It has been found with the invention that a substantial increase in the smoothness is achieved by the linearly movable weight body, to such an extent as can not be achieved by an increase in mass of the swash plate on the corresponding side. This is due to the fact that an optimal balance in this case can not be achieved, since the local mass enrichment on the swash plate would not perform a linear but a swinging with the swash plate movement in contrast to the conditions on the percussion side, where the excitation sleeve also linearly movable is provided.
  • the positive guidance of the weight body is advantageously formed by a housing fixed in the operation of the hammer drill.
  • the positive guidance is formed by at least one linearly extending rod, which is held on a housing-fixed component and engages in a direction of movement linearly extending guide recess in the weight body.
  • This linearly extending guide recess could, for example, be a passage opening in the weight body.
  • the guide recess is formed in the weight body as open-edged recess, since in such a case, the positive guidance on the outer sides of the weight body can be realized. This creates space in the interior of the weight body, which is available for the formation of the coupling to the swash plate.
  • the positive guide forming rod is advantageously a round rod.
  • the length of the rod could be shorter than the longitudinal extent of the weight body and, for example, be arranged only in a central region of the weight body.
  • the length of the rod is greater than that of the weight body and that the rod is held at its ends to a housing-fixed component.
  • the weight body is formed substantially cuboid. He can be arranged in such a case in a substantially cuboid, preferably provided below the striking mechanism area. Especially in this area is the creation of additional space for the weight body unproblematic and not disturbing.
  • the coupling of the weight body to the swash plate can be realized in any desired manner, so that the oscillating movement of the swash plate can be converted into a linear reciprocating motion of the weight body.
  • the weight body has an opening for receiving a radial extension of the swash plate.
  • the radial extension may be formed integrally with the swash plate, or this may be an attachable in any manner approach.
  • a dome-shaped coupling attachment piece may also be provided on the weight body.
  • the formation of an opening proves to be easier to manufacture and, above all, space-saving.
  • the radial coupling extension on the swash plate is advantageously formed like a ball head and thus includes a slimming down to the swash plate. This facilitates the coupling to the weight body.
  • FIG. 1 shows an inventively designed rotary hammer. From an electric motor 2, a drive shaft 4 extends vertically upwards in the figure. Via an angle gear 6, a drive deflection is achieved by 90 °, which leads to a pinion 8.
  • the axis of rotation of the pinion 8 is parallel to the Bohrtechnikmaschinegneachse 10 of a usable in the front area in a chuck body 12 in the figure, not shown tool, which may be a drilling tool but also a pure impact tool, such as a chisel.
  • the pinion 8 is in meshing engagement with a gear 14 which rotatably disposed on an intermediate shaft 16 is, which in turn extends parallel to the Bohrwerkmaschineachse 10 forward.
  • a gear 18 is rotatably provided in a front portion of the intermediate shaft 16 in turn a gear 18 is rotatably provided.
  • a rotatably connected to the outer sleeve 20 is provided which can be brought by means of a displaceable in the direction of the tool axis 10 back and forth coupling element 22 by meshing engagement with the gear 18 in drive connection or out of drive connection.
  • an exciter sleeve 24 is slidably provided in the direction of the Bohrwerkmaschineachse 10 back and forth.
  • the exciter sleeve 24 defines a space 26 which defines an air cushion and in turn accommodates a percussion piston 28 in the longitudinal direction of the Bohrwerkmaschineachse 10 slidably.
  • the air cushion is relaxed or compressed in a conventional manner and thereby causes a reciprocating motion of the percussion piston 28.
  • the percussion piston 28 exerts with its front end face 30 a striking effect on an intermediate plunger 32, which is transmitted to the drilling tool, not shown.
  • the reciprocating motion of the exciter sleeve 24 is effected by a tumble drive device 34, hereinafter is described.
  • the wobble drive device 34 comprises a rotation element 36 which is mounted on the intermediate shaft 16 and rotatable relative thereto. By rotating a coupling sleeve 38 which is non-rotatably provided on the intermediate shaft 16, the rotational element 36 can be non-rotatably connected to the intermediate shaft 16 via a dog clutch 40 on its side facing the coupling sleeve 38 (impact operation).
  • the rotary member 36 is surrounded by a swash plate member 42, wherein between them rolling elements 44 are provided, such that the rotary member 36, the inner shell and the swash plate 42 is the outer shell of the bearing formed thereby.
  • the swash plate 42 comprises at its the exciter sleeve 24 side facing a pin-shaped projection 46, which optionally engages with the interposition of a spherical bearing in an opening 48 of the exciter sleeve.
  • the swash plate 42 performs a swinging or tilting movement.
  • the pin-shaped projection 46 oscillates in the plane of the drawing FIG. 1 , as indicated by double representation.
  • the exciter sleeve 24 follows by corresponding reciprocation. The air cushion in the space 26 is compressed and decompressed, thus the percussion piston 28 is moved back and forth.
  • a weight body 50 is provided such that it can be driven by the swash plate 42 in a positive guide linear and parallel to Bohrwerkmaschineachse 10 back and forth.
  • the positive guidance is achieved in that on the two longitudinal sides 52, 54 of the rectangular weight body 50 open-edge guide recesses 56, 58 are formed, which have a circular shape and each receive a parallel to the tool axis 10 extending rod 60, 62 as a longitudinal guide means.
  • the rods 60, 62 are held with their longitudinal ends 64, 66 on a housing-fixed component 68, 70.
  • the weight body 50 comprises an opening 72 designed as a bore, into which a coupling means 74 in the form of a ball-head-shaped extension 76 integrally formed on the swash plate 42 engages, if necessary, with interposition of a spherical bearing.
  • the exciter sleeve 24 When in impact operation, the exciter sleeve 24 is moved by the tumbling or reciprocating tilting movement of the swash plate 42 and the neck 46 in the direction of Bohrwerkmaschineachse 10 backwards, so will simultaneously and parallel to Bohrwerkmaschineachse 10 of the weight body 50 moves forward. As a result, the rough running in the impact mode or percussion drilling can be significantly reduced.
  • the linearly reciprocating weight body 50 is housed in a cuboid housing portion 78 of the machine housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)
  • Earth Drilling (AREA)

Claims (7)

  1. Marteau perforateur comprenant un dispositif de percussion à matelas d'air, sur lequel une douille excitatrice (24), qui forme un espace (26) recevant le matelas d'air et dans laquelle un piston frappeur (28) peut être déplacé d'un côté et de l'autre, est disposée de façon concentrique par rapport à l'axe de l'outil perforateur (10), et comprenant un dispositif à mouvement oscillant (34) déplaçant la douille excitatrice (24) d'un côté et de l'autre en direction de l'axe de l'outil perforateur (10), dispositif dont l'élément de rotation (36) entraînant le plateau oscillant (42) est prévu de façon à pouvoir être entraîné par rotation sur un axe parallèle à l'axe de l'outil perforateur (10), mais à une distance à côté de celui-ci, un corps de poids (50) étant prévu sur le côté diamétralement opposé à la douille excitatrice (24) du plateau oscillant (42), caractérisé en ce que le corps de poids est prévu de façon à pouvoir se déplacer en va-et-vient de manière linéaire par guidage forcé et parallèlement à l'axe de l'outil perforateur (10) sous l'effet du plateau oscillant (42).
  2. Marteau perforateur selon la revendication 1, caractérisé en ce que le guidage forcé du corps de poids (50) est formé par un composant solidaire du boîtier pendant le service.
  3. Marteau perforateur selon la revendication 1 ou 2, caractérisé en ce que le guidage forcé est formé par au moins une barre (60, 62) étirée linéairement, qui est maintenue sur un composant (68, 70) solidaire du boîtier et s'engage dans un évidement de guidage (56, 58) linéairement étiré dans le sens de déplacement dans le corps de poids (50).
  4. Marteau perforateur selon la revendication 3, caractérisé en ce que l'évidement de guidage (56, 58) est conçu ouvert sur le bord.
  5. Marteau perforateur selon la revendication 3 ou 4, caractérisé en ce que la barre (60, 62) est une barre ronde.
  6. Marteau perforateur selon l'une quelconque des revendications 3, 4 ou 5, caractérisé en ce que la longueur de la barre (60, 62) est plus grande que le tronçon parcouru lors du déplacement d'un côté et de l'autre du corps de poids (50) et en ce que la barre (60, 62) est maintenue sur ses extrémités (64, 66) sur un composant (68, 70) solidaire du boîtier.
  7. Marteau perforateur selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps de poids (50) est en forme de parallélépipède.
EP99121944A 1998-11-11 1999-11-08 Foreuse à percussion Expired - Lifetime EP1000712B9 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19851888A DE19851888C1 (de) 1998-11-11 1998-11-11 Bohrhammer
DE19851888 1998-11-11

Publications (4)

Publication Number Publication Date
EP1000712A2 EP1000712A2 (fr) 2000-05-17
EP1000712A3 EP1000712A3 (fr) 2003-02-05
EP1000712B1 EP1000712B1 (fr) 2007-01-10
EP1000712B9 true EP1000712B9 (fr) 2008-02-20

Family

ID=7887350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99121944A Expired - Lifetime EP1000712B9 (fr) 1998-11-11 1999-11-08 Foreuse à percussion

Country Status (4)

Country Link
US (1) US6112830A (fr)
EP (1) EP1000712B9 (fr)
DE (2) DE19851888C1 (fr)
ES (1) ES2281157T3 (fr)

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GB0100605D0 (en) * 2001-01-10 2001-02-21 Black & Decker Inc Hammer
DE10103141A1 (de) * 2001-01-24 2002-07-25 Hilti Ag Elektrohandwerkzeuggerät mit Leerschlagabschaltung
DE10103996C1 (de) * 2001-01-30 2002-10-02 Wacker Werke Kg Luftfederschlagwerk für einen Schlag- und/oder Bohrhammer mit kurz bauendem Antriebskolben
DE10136515C2 (de) * 2001-07-26 2003-10-23 Wacker Construction Equipment Bohr- und/oder Schlaghammer mit Handgriff
US20050087352A1 (en) * 2002-07-04 2005-04-28 Atlas Copco Electric Tools Gmbh Portable Tool
US6932166B1 (en) 2002-12-03 2005-08-23 Paul Kirsch Pneumatic tool
EP1606082B1 (fr) * 2003-03-21 2010-05-05 BLACK & DECKER INC. Outil electrique incorporant un systeme limitant les vibrations
EP1464449B1 (fr) * 2003-04-01 2010-03-24 Makita Corporation Outil électrique
DE102004012820B3 (de) * 2004-03-16 2005-11-17 Wacker Construction Equipment Ag Taumelfingergetriebe
DE102004020177B4 (de) * 2004-04-24 2024-07-18 Robert Bosch Gmbh Handwerkzeugmaschine mit einem drehenden und/oder schlagenden Antrieb
EP1779979B1 (fr) * 2004-04-30 2018-02-21 Makita Corporation Outil de travail
GB2429675A (en) * 2005-06-23 2007-03-07 Black & Decker Inc Vibration dampening mechanism
US7383895B2 (en) * 2005-08-19 2008-06-10 Makita Corporation Impact power tool
JP4362657B2 (ja) * 2005-09-07 2009-11-11 ヨコタ工業株式会社 電動式衝撃締め付け工具
JP2007175839A (ja) * 2005-12-28 2007-07-12 Hitachi Koki Co Ltd 打撃工具
CN101489731A (zh) * 2006-07-10 2009-07-22 罗伯特·博世有限公司 手持式工具机
DE102006032214A1 (de) * 2006-07-12 2008-01-17 Robert Bosch Gmbh Handwerkzeugmaschine mit einer Schlagwerkeinheit
JP4756474B2 (ja) * 2006-07-20 2011-08-24 日立工機株式会社 電動工具
JP4863942B2 (ja) * 2006-08-24 2012-01-25 株式会社マキタ 打撃工具
US8261854B2 (en) * 2007-05-01 2012-09-11 Hitachi Koki Co., Ltd Reciprocating tool
RU2464158C2 (ru) * 2007-05-01 2012-10-20 Хитачи Коки Ко., Лтд. Ручная машина с возвратно-поступательным движением рабочего органа
JP5126574B2 (ja) * 2007-05-01 2013-01-23 日立工機株式会社 往復動工具
DE102007061716A1 (de) 2007-12-19 2009-06-25 Robert Bosch Gmbh Taumelantrieb einer Handwerkzeugmaschine
DE102008000687A1 (de) * 2008-03-14 2009-09-17 Robert Bosch Gmbh Handwerkzeugmaschine für schlagend angetriebene Einsatzwerkzeuge
DE102008000677A1 (de) 2008-03-14 2009-09-17 Robert Bosch Gmbh Handwerkzeugmaschine für schlagend angetriebene Einsatzwerkzeuge
DE102008040767A1 (de) * 2008-07-28 2010-02-04 Robert Bosch Gmbh Schlagvorrichtung
DE102009001590A1 (de) * 2009-03-17 2010-09-23 Robert Bosch Gmbh Handwerkzeug mit einem Gegenschwinger
GB0912283D0 (en) * 2009-07-15 2009-08-26 Black & Decker Inc Motor driven hammer having means for controlling the power of impact
US8636081B2 (en) 2011-12-15 2014-01-28 Milwaukee Electric Tool Corporation Rotary hammer
DE102010062094A1 (de) * 2010-11-29 2012-05-31 Robert Bosch Gmbh Hammerschlagwerk
US8695726B2 (en) 2010-12-29 2014-04-15 Medical Enterprises LLC Electric motor driven tool for orthopedic impacting
US8936105B2 (en) * 2010-12-29 2015-01-20 Medical Enterprises LLC Electric motor driven tool for orthopedic impacting
US8602124B2 (en) * 2010-12-29 2013-12-10 Medical Enterprises, Llc Electric motor driven tool for orthopedic impacting
US8393409B2 (en) * 2010-12-29 2013-03-12 Ortho Technologies, Llc Electric motor driven tool for orthopedic impacting
JP5726654B2 (ja) * 2011-07-01 2015-06-03 株式会社マキタ 打撃工具
DE102012005864A1 (de) 2011-10-22 2013-04-25 Wolfgang Schmid Taumelwelle mit integrierter Sicherheitskupplung und Verriegelung
US10149711B2 (en) 2012-03-30 2018-12-11 Depuy Mitek, Llc Surgical impact tool
US9981372B2 (en) * 2012-12-31 2018-05-29 Robert Bosch Tool Corporation Reciprocating tool with fluid driven counterweight
DE102013212554B4 (de) 2013-06-28 2023-12-14 Robert Bosch Gmbh Handwerkzeugmaschinenantriebsvorrichtung
DE102014200393A1 (de) 2014-01-13 2015-07-16 Metabowerke Gmbh Schlagwerkseinheit
JP6510250B2 (ja) * 2015-01-29 2019-05-08 株式会社マキタ 作業工具
EP3646918A1 (fr) * 2018-11-05 2020-05-06 Mt.Derm Dispositif de perçage d'un tissu organique ainsi que module d'entraînement
EP4234171A1 (fr) * 2022-02-24 2023-08-30 Hilti Aktiengesellschaft Outil électrique doté d'un mécanisme de marteau

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DE19651828A1 (de) * 1996-12-13 1998-06-18 Bosch Gmbh Robert Mehrganggetriebe für Handwerkzeugmaschinen

Also Published As

Publication number Publication date
DE59914142D1 (de) 2007-02-22
EP1000712A2 (fr) 2000-05-17
EP1000712B1 (fr) 2007-01-10
DE19851888C1 (de) 2000-07-13
US6112830A (en) 2000-09-05
EP1000712A3 (fr) 2003-02-05
ES2281157T3 (es) 2007-09-16

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