EP2700477A1 - Agencement d'engrenage pour une machine-outil et machine-outil - Google Patents

Agencement d'engrenage pour une machine-outil et machine-outil Download PDF

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Publication number
EP2700477A1
EP2700477A1 EP13176696.6A EP13176696A EP2700477A1 EP 2700477 A1 EP2700477 A1 EP 2700477A1 EP 13176696 A EP13176696 A EP 13176696A EP 2700477 A1 EP2700477 A1 EP 2700477A1
Authority
EP
European Patent Office
Prior art keywords
drive
drive spindle
gear
countershaft
coaxial
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
EP13176696.6A
Other languages
German (de)
English (en)
Other versions
EP2700477B1 (fr
Inventor
Roland Saupp
Michael Kukla
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 EP2700477A1 publication Critical patent/EP2700477A1/fr
Application granted granted Critical
Publication of EP2700477B1 publication Critical patent/EP2700477B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/062—Means for driving the impulse member comprising a wobbling mechanism, swash plate
    • 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
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0038—Tools having a rotation-only mode

Definitions

  • the invention relates to a gear arrangement for a driven machine tool with a rotating tool.
  • a machine tool may in particular comprise a drilling or impact drill or a hammer drill with or without chisel function.
  • one of a drive unit of the machine tool driven shaft protrudes with its front end in the gear assembly and drives a intermediate shaft via a drive pinion.
  • the German Offenlegungsschrift discloses DE 196 51 828 Al such a hammer drill
  • the intermediate shaft is parallel to the Bohrwerkmaschineachse, but at a distance next to this, arranged.
  • the hammer drill further comprises a Lucaspolster Kunststofftechnik and a reciprocating in the direction of Bohrwerkmaschinectionachse reciprocating wobble drive device whose swash bearing or swash plate is mounted on the rotatably driven intermediate shaft.
  • 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 an output-side element.
  • a rotation element acts on a wobble element, which is referred to below as a wobble bearing, in such a way that it is driven in a reciprocating manner and thereby can put another element in linear translational motion.
  • a drive spindle of the machine tool on which the tool to be rotated can be accommodated, comprises a drill sleeve, which is in engagement with the external toothing of a sprocket of the intermediate shaft seated on the intermediate shaft with an external toothed ring.
  • the length of the gear assembly is thus significantly influenced by the length and the position of the impact mechanism. So it must be ensured that the swash bearing does not collide with the driven shaft and / or the spur gear of the intermediate shaft.
  • a hammer drill which has a drive motor with a motor shaft and a motor spindle connected to the motor shaft.
  • a Schlagtechnik which is also operatively connected to the motor shaft, is via a single-stage gearbox with the Tool spindle connected.
  • the single-stage gearbox includes a Schlagtechnik drive wheel that drives the tool spindle via a ring gear.
  • the motor shaft of the drive motor in turn comprises a motor pinion whose teeth are in operative engagement with an end toothing of the striking mechanism drive wheel.
  • a machine tool comprising a drive spindle for the rotary drive of a tool, a coaxial gear ring which can be coupled to the drive spindle and an intermediate shaft which is capable of transmitting a drive torque from a driven shaft to the drive spindle.
  • the intermediate shaft has for this purpose a gear which is in engagement with the coaxial sprocket of the drive spindle.
  • a gear arrangement is provided which additionally comprises a further countershaft with a gear.
  • an object of the present invention is to provide a gear arrangement which allows better utilization of the available space.
  • a transmission arrangement for a driven Proposed machine tool comprising a rotating tool, which comprises a drive spindle for rotationally driving a tool, a coaxial ring gear which can be coupled to the drive spindle, and an intermediate shaft which can transmit drive torque from a driven shaft to the drive spindle, the intermediate shaft having a gear, which is in engagement with the coaxial sprocket of the drive spindle and wherein the gear assembly additionally comprises a countershaft with a gear.
  • the gear of the countershaft depending on the operating mode of the machine tool in engagement with the coaxial ring gear of the drive spindle or out of engagement with the coaxial ring gear of the drive spindle can be brought.
  • a wobble drive device and the torque transmission via the spur gear of the intermediate shaft can be spatially separated from each other on the drive spindle, whereby the entire gear assembly builds shorter in the direction of Bohrwerkmaschineachse.
  • the driven shaft is driven by a drive unit, for example by an electric motor or a pneumatic drive unit, and transmits its drive torque in a conventional manner to the intermediate shaft of the gear assembly.
  • the drive spindle is used for the rotary drive of a recordable on the machine tool, wherein the intermediate shaft is able to transmit the drive torque to the drive spindle via a coaxial ring gear which can be coupled to the drive spindle.
  • the drive torque can be transmitted from the driven shaft via the intermediate shaft and the coaxial sprocket on the countershaft.
  • This torque transmission can be interrupted as needed.
  • the coaxial sprocket is rotatably mounted relative to the drive spindle between at least two positions on the drive spindle rotatably.
  • the displaceable coaxial sprocket is thus not only used in this embodiment, the torque transmission, but is also used to switch between at least two operating modes of the machine tool.
  • the countershaft is co-driven while it is stationary in the at least second of the at least two operating modes.
  • the countershaft is arranged parallel to the intermediate shaft.
  • the drive spindle may comprise a drill sleeve, which comprises a coupling portion which is engageable with the coaxial sprocket of the drive spindle.
  • a coupling portion may for example comprise a coaxial flange with an internal toothing or an external toothing, which can be coupled to the coaxial toothed ring.
  • the coaxial sprocket may comprise both a first portion with an external toothing and a second portion with an internal toothing. The first section is used in this particular embodiment for coupling with the intermediate shaft and the second for coupling with the drill sleeve.
  • the coaxial sprocket can also be rotatably mounted on the outer circumference of the drill sleeve to be relatively displaceable relative to the coupling portion.
  • an actuator may be provided which is connected to an actuating element and is able to displace the coaxial ring gear relative to the drive spindle.
  • the actuator may for example comprise a slide switch, which is manually displaceable by an operator between different operating positions and as a result of its displacement, the actuator also in the Moves way that a relative displacement of the coaxial ring gear is made to the drive spindle.
  • a Heilpolster Farbwerk be provided with a wobble drive device, wherein the wobble drive device is rotatably connected to the countershaft and is able to convert a rotational movement of the countershaft in a translational movement and transmitted to the striking mechanism.
  • the wobble drive device may comprise a swash bearing which is received on the countershaft.
  • the wobble drive device is arranged with the swash bearing on the countershaft, the spur gear for transmitting the torque from the intermediate shaft to the drive spindle and the swash bearing can be arranged substantially parallel to each other. This makes it already possible to save space in the direction of the drilling tool axis. Furthermore, the torque transmission does not take place from the driven shaft directly to that shaft on which the wobble drive device is arranged, but via a separate shaft, namely the intermediate shaft. Thus, the wobble drive device, in particular the wobble bearing can be built closer towards the drive unit, since a collision with the driven shaft is not to be feared.
  • the present invention also relates to a machine tool with a rotating tool, which further comprises a drive unit for driving a driven shaft and a gear assembly having the features described above.
  • the Figure 1A shows a transmission assembly according to the invention, which is generally designated by the reference numeral 10.
  • the gear assembly 10 includes a driven shaft 12 which is driven by a drive unit, not shown, a drive spindle 14 and an intermediate shaft 20 and a countershaft 30.
  • the drive spindle 14 has at its free remote from the driven shaft 12 end 16 a tool holder for receiving a Tool, such as a drill or chisel on.
  • the drive spindle 14 comprises a drill sleeve 18 which engages in sections thereof.
  • the drive spindle 14 extends in a longitudinal direction L, which coincides with a tool axis (Bohrwerkmaschinemaschinese).
  • the intermediate shaft 20 is used in the present transmission arrangement 10 for transmitting a drive torque from the driven shaft 12 to the drive spindle 14.
  • the intermediate shaft 20 has a first ring gear 22 which is provided with an external toothing 12a of the driven shaft 12 is engaged.
  • the drive torque is transmitted to the intermediate shaft 20 via the external teeth 12 a and the first ring gear 22.
  • the intermediate shaft 20 further includes a second ring gear 24 which is in engagement with a ring gear 28 which is rotatably mounted coaxially with the drill sleeve 18 and the drive spindle 14 at this.
  • the coaxial ring gear 28 engages around, as in the Figure 1A It can be seen, the drill sleeve 18. It is rotatable on its outer circumference and relative to the drill sleeve 18 in the direction of the longitudinal axis L displaceable (see also FIGS. 2 to 4 ) stored. In the embodiment shown, in particular, three different positions of the coaxial ring gear 28 are shown, through which this, as will be explained below, different modes of the gear assembly 10 and an associated machine tool can specify.
  • a tumble drive device 32 On the countershaft 30, which extends parallel to the intermediate shaft 20 and is arranged at a predetermined distance to this (see also FIG. 1B ), a tumble drive device 32 is arranged. This includes a swash bearing 34 which is rotatably connected to the intermediate shaft 20, and a connecting means 36 which is received in the manner of a ball joint in a corresponding receptacle 38a of a reciprocating piston or a exciter sleeve 38.
  • the wobble drive device 32 is used in a known manner to a rotational movement of the countershaft 30 in a translational movement T (see. Figures 3 and 4 ) and transfer them via an air spring on the exciter sleeve 38.
  • the countershaft 30 includes a ring gear 26, which may be in engagement with the coaxial ring gear 28 depending on the position of the coaxial ring gear 28 of the sleeve 18 or not.
  • a ring gear 26 which may be in engagement with the coaxial ring gear 28 depending on the position of the coaxial ring gear 28 of the sleeve 18 or not.
  • the gear assembly 10 includes a percussion mechanism, in the illustrated embodiment, an air cushion impactor 40 that includes a percussion piston (not shown), an anvil (not shown), and an exciter sleeve 38 and a drill sleeve 42, wherein the exciter sleeve 38 is slidably received within the drill sleeve 42 is and with this forms the air cushion receiving space 42a.
  • the percussion piston and a reciprocating motion are offset, which is transmitted via the striker to a recorded in the tool holder of the drive spindle 14 tool. Consequently, when the countershaft 30 is driven via the coaxial sprocket 28, the wobble drive device 32 converts this rotational movement into a translational movement T which, with the aid of the percussion mechanism 40, generates a striking movement of the received tool.
  • the gear assembly 10 is at least partially accommodated in a housing G and thus protected against external influences, such as dust and dirt.
  • Both the intermediate shaft 20 and the countershaft 30 are rotatably mounted in the usual manner and attached via fastening means 44 and 46 to the housing G.
  • FIG. 2 shows a first operating mode (drilling), in which the tool should only be put in a rotary motion.
  • the coaxial ring gear 28 assumes a first operating position (drilling position), in which it is in engagement with the ring gear 24 of the intermediate shaft 20 and is connected via a coupling portion 48 with the drill sleeve 18 in rotating engagement.
  • the drill sleeve 18 is thus rotated in this mode of the coaxial ring gear 28 and transmits this rotational movement in the usual way to a recorded in the tool holder tool.
  • the coaxial ring gear 28 is in its first operating position out of engagement with the ring gear 26 of the countershaft 30, so that no torque is transmitted to this.
  • the wobble drive device is therefore stationary, so that the striking mechanism 40 is also inactive.
  • the coaxial sprocket 28 by an adjustment S1 in its second Transferring operating position (hammer drilling position), this remains in engagement with the coupling portion 48 of the drill sleeve 18, so that the tool continues to perform a rotational movement.
  • the coaxial ring gear 28 engages with the ring gear 26 of the countershaft 30, whereby it is set in a rotational movement.
  • the tumble drive device 32 converts the rotary motion into a translational motion T and transmits it to the percussion mechanism 40.
  • the tool thus experiences a striking movement (hammer drilling operation) in addition to a rotary motion.
  • the coaxial ring gear 28 If the coaxial ring gear 28 is moved by a second displacement S2 along the longitudinal axis L in its third operating position (bit position), so it comes out of engagement with the coupling portion 48, whereby no rotational movement is transmitted to the drill sleeve 18. Consequently, a tool received by the tool holder is no longer subjected to a rotational movement by the torque of the driven shaft 12. However, the coaxial ring gear 28 remains engaged with the ring gear 26 of the countershaft 30, so that via the wobble drive device 32 and the percussion mechanism 40 further a beating movement is transmitted to a recorded on the tool holder tool (hammer operation or chisel operation).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Gear Transmission (AREA)
EP13176696.6A 2012-08-22 2013-07-16 Agencement d'engrenage pour une machine-outil et machine-outil Active EP2700477B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012214938.4A DE102012214938B4 (de) 2012-08-22 2012-08-22 Getriebeanordnung für eine angetriebene Werkzeugmaschine sowie Werkzeugmaschine mit einer solchen Getriebeanordnung

Publications (2)

Publication Number Publication Date
EP2700477A1 true EP2700477A1 (fr) 2014-02-26
EP2700477B1 EP2700477B1 (fr) 2017-12-06

Family

ID=48795438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13176696.6A Active EP2700477B1 (fr) 2012-08-22 2013-07-16 Agencement d'engrenage pour une machine-outil et machine-outil

Country Status (3)

Country Link
EP (1) EP2700477B1 (fr)
DE (1) DE102012214938B4 (fr)
RU (1) RU2576747C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3456479A1 (fr) * 2017-09-19 2019-03-20 Metabowerke GmbH Dispositif d'entraînement pour une machine-outil entraînée
DE102017121717A1 (de) 2017-09-19 2019-03-21 Metabowerke Gmbh Stellglied und Getriebeanordnung für eine angetriebene Werkzeugmaschine
EP3812098A1 (fr) 2019-10-21 2021-04-28 Makita Corporation Marteau rotatif
EP3812097A1 (fr) 2019-10-21 2021-04-28 Makita Corporation Marteau rotatif
US11318596B2 (en) 2019-10-21 2022-05-03 Makita Corporation Power tool having hammer mechanism

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7311947A (fr) * 1972-08-31 1974-03-04
US4158313A (en) 1977-07-13 1979-06-19 Smith Arthur W Electric hand tool
DE19651828A1 (de) 1996-12-13 1998-06-18 Bosch Gmbh Robert Mehrganggetriebe für Handwerkzeugmaschinen
EP2147753A1 (fr) * 2008-07-25 2010-01-27 AEG Electric Tools GmbH Outil électrique doté d'une commutation de châssis
DE102008054458A1 (de) 2008-12-10 2010-06-17 Robert Bosch Gmbh Handwerkzeugmaschine
GB2472890A (en) * 2009-08-19 2011-02-23 Bosch Gmbh Robert Device for generating an additional effect in a hand-held power tool

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU968290A1 (ru) * 1980-12-17 1982-10-23 Копейский Ордена Трудового Красного Знамени Машиностроительный Завод Им.С.М.Кирова Бурова установка с автоматическим выбором режимов бурени
SU1046494A1 (ru) * 1982-06-17 1983-10-07 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Горнорудного Машиностроения Вращатель бурового станка
SU1504322A2 (ru) * 1987-11-02 1989-08-30 Горловский филиал Донецкого политехнического института Буровой станок
RU2224076C1 (ru) * 2002-07-02 2004-02-20 Носов Олег Николаевич Бурильная машина
DE102006000515A1 (de) * 2006-12-12 2008-06-19 Hilti Ag Elektrisches Handwerkzeuggerät

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7311947A (fr) * 1972-08-31 1974-03-04
US4158313A (en) 1977-07-13 1979-06-19 Smith Arthur W Electric hand tool
DE19651828A1 (de) 1996-12-13 1998-06-18 Bosch Gmbh Robert Mehrganggetriebe für Handwerkzeugmaschinen
EP2147753A1 (fr) * 2008-07-25 2010-01-27 AEG Electric Tools GmbH Outil électrique doté d'une commutation de châssis
DE102008054458A1 (de) 2008-12-10 2010-06-17 Robert Bosch Gmbh Handwerkzeugmaschine
GB2472890A (en) * 2009-08-19 2011-02-23 Bosch Gmbh Robert Device for generating an additional effect in a hand-held power tool

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3456479A1 (fr) * 2017-09-19 2019-03-20 Metabowerke GmbH Dispositif d'entraînement pour une machine-outil entraînée
DE102017121717A1 (de) 2017-09-19 2019-03-21 Metabowerke Gmbh Stellglied und Getriebeanordnung für eine angetriebene Werkzeugmaschine
DE102017121720A1 (de) 2017-09-19 2019-03-21 Metabowerke Gmbh Getriebeanordnung für eine angetriebene Werkzeugmaschine
EP3812098A1 (fr) 2019-10-21 2021-04-28 Makita Corporation Marteau rotatif
EP3812097A1 (fr) 2019-10-21 2021-04-28 Makita Corporation Marteau rotatif
CN112757231A (zh) * 2019-10-21 2021-05-07 株式会社牧田 锤钻
US11318596B2 (en) 2019-10-21 2022-05-03 Makita Corporation Power tool having hammer mechanism
US11529727B2 (en) 2019-10-21 2022-12-20 Makita Corporation Power tool having hammer mechanism
US11826891B2 (en) 2019-10-21 2023-11-28 Makita Corporation Power tool having hammer mechanism
CN112757231B (zh) * 2019-10-21 2024-06-07 株式会社牧田 锤钻

Also Published As

Publication number Publication date
EP2700477B1 (fr) 2017-12-06
DE102012214938B4 (de) 2016-11-10
DE102012214938A1 (de) 2014-02-27
RU2013139021A (ru) 2015-02-27
RU2576747C2 (ru) 2016-03-10

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