EP0548008B1 - Werkzeug zum Schlagbohren und Meisseln und Werkzeugaufnahme für diese Werkzeuge - Google Patents

Werkzeug zum Schlagbohren und Meisseln und Werkzeugaufnahme für diese Werkzeuge Download PDF

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Publication number
EP0548008B1
EP0548008B1 EP92810930A EP92810930A EP0548008B1 EP 0548008 B1 EP0548008 B1 EP 0548008B1 EP 92810930 A EP92810930 A EP 92810930A EP 92810930 A EP92810930 A EP 92810930A EP 0548008 B1 EP0548008 B1 EP 0548008B1
Authority
EP
European Patent Office
Prior art keywords
tool
locking
groove
locking body
rotary
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
EP92810930A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0548008A1 (de
Inventor
Christian Kleine
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0548008A1 publication Critical patent/EP0548008A1/de
Application granted granted Critical
Publication of EP0548008B1 publication Critical patent/EP0548008B1/de
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
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • 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
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • 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
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0034—Details of shank profiles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17068—Rotary socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/907—Tool or Tool with support including detailed shank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means
    • Y10T408/953—Clamping jaws

Definitions

  • the invention relates to a tool which has a clamping shank for inserting into a tool holder of a hand-held power tool intended for chiseling and / or drilling and / or impact drilling, which is provided with at least two rotary driving grooves, which are in no way diametrically opposed to one another, for axial insertion of rotary drivers of the tool holder open into the free end face of the clamping shank, and with at least one locking groove which is closed for receiving at least one locking body of the tool holder at least at its end adjacent to the end face of the clamping shank to limit the axial movement of the tool.
  • Tools of this type are known for example from DE-PS 2551125 and DE-PS 3716915. These tools are designed so that they can only be inserted into a tool holder in a very specific angular position. Tools according to DE-PS 3716915 have two diametrically opposite locking grooves, which are closed at both ends. This training is important because tools according to this patent should also fit into the tool holder of the best-selling heavy hammer drill machine. With this rotary hammer machine, both the transmission of the torque and the locking are carried out by the two diametrically opposite locking grooves.
  • a tool which has rotary driving grooves opening into the free end face at equal angular intervals. Opposed to one of these rotary driving grooves is a locking groove which is closed towards the free end face. Due to the rotary driving grooves, this known tool can be used in chucks with three jaws. In addition, due to the locking groove, this known tool can also be used in tool holders which are provided with only one locking body.
  • the invention is therefore based on the object of designing tools according to the type of the main claim in such a way that the wear on the tool holder and tool shank is significantly reduced and correspondingly designed tools nevertheless fit into the most widespread hand-held machine tools with two locking bodies and expand the work area of hand-held power tool and tool upwards .
  • a further rotary driving groove is at least approximately diametrically opposite a locking groove and the further rotating driving groove has a cross-sectional shape which is designed to receive a further locking body which is a mirror image of the locking body engaging in the locking groove lies and has the same cross-sectional area.
  • an additional rotary driving groove which may have an arc-shaped cross-sectional shape, for example, significantly reduces wear, since the contact surface between the additional rotary driving groove and the associated rotating driver is several times larger due to the much greater axial extension of both compared to a locking body which, to enable the axial movement of the tools in the tool holder, has only about 50% of the length of the locking groove can be.
  • This effect is further enhanced because, due to the necessary radial mobility of the locking body, in particular with increasing wear in the tool holder, changes in the position of the locking body occur during use, so that there is only a line contact between the locking groove and locking body.
  • a large-area contact with the associated rotary driver is Especially in the preferred embodiment of the rotary driving grooves with flat flanks, a large-area contact with the associated rotary driver.
  • the invention also relates to a tool holder for impacting and / or drilling tools with at least two, in no case diametrically opposite, rotary drivers, which are used for the axial insertion into rotary driver grooves of tools are provided, and with at least one locking body, which is provided for radial insertion into a locking groove of the tool.
  • the invention is also based on the object of designing the tool holder in such a way that, in cooperation with the tools according to the invention, the wear on the tool shank and tool holder is significantly reduced and the working range of the handheld power tool and tool is expanded upwards.
  • a further rotary driver is at least approximately opposite a locking body and the further rotary driver has a cross-sectional area which approximately corresponds to the axial projection of the part of the locking body which serves to engage in the locking groove.
  • the further rotary driver preferably has at least approximately flat surfaces.
  • FIG. 1 and 2 shown clamping shaft 11 has three non-diametrically opposite rotary driving grooves 13, 14, 16, the locking groove 12 and the rotating driving groove 15 opposite this.
  • the rotary driving grooves 13, 14, 15, 16 have the flat flanks 20 and end in the free end surface 17 of the clamping shaft 11.
  • the locking body 18 engaging in the locking groove 12 is indicated by dashed lines, as is the mirror image opposite it and engaging in the rotating driving groove 15 Locking body 19.
  • the in Fig. 1, indicated by dashed lines, locking bodies 18, 19 show the small length of the axial contact surface between tool and locking body.
  • FIG. 3 shows the tool holder 21 of a rotary hammer in cross section. It has the rotary drivers 23, 24, 25, 26 adapted to the rotary driving grooves 13, 14, 15, 16 of the tool.
  • the locking body 28 engages in the locking groove 12 of the tool, which is guided in the recess 27 of the tool holder 21 and is supported against the locking ring 22.
  • the tools and tool holders according to the invention solve the task of the invention in a surprisingly simple and, as tests in which the wear has been halved, have shown in a convincing manner, with no additional costs being incurred during production.
  • the cost of manufacturing the Tool holders are even reduced since all the rotary drivers, including the rotary driver 25, are introduced together by reshaping and, since only one locking body is used, the costs for the recess 27 and the locking body 28 are only half.
  • the use of only one locking body has no negative effects on the safety or wear of the locking device or the tool holder and the tool, as tests have proven.
EP92810930A 1991-12-18 1992-11-30 Werkzeug zum Schlagbohren und Meisseln und Werkzeugaufnahme für diese Werkzeuge Expired - Lifetime EP0548008B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141846 1991-12-18
DE4141846A DE4141846A1 (de) 1991-12-18 1991-12-18 Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge

Publications (2)

Publication Number Publication Date
EP0548008A1 EP0548008A1 (de) 1993-06-23
EP0548008B1 true EP0548008B1 (de) 1996-02-21

Family

ID=6447418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810930A Expired - Lifetime EP0548008B1 (de) 1991-12-18 1992-11-30 Werkzeug zum Schlagbohren und Meisseln und Werkzeugaufnahme für diese Werkzeuge

Country Status (7)

Country Link
US (1) US5324145A (ja)
EP (1) EP0548008B1 (ja)
JP (1) JPH05253863A (ja)
KR (1) KR100201712B1 (ja)
DE (2) DE4141846A1 (ja)
DK (1) DK0548008T3 (ja)
FI (1) FI97029C (ja)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4132023A1 (de) * 1991-09-26 1993-04-01 Bosch Gmbh Robert Einrichtung an handwerkzeugmaschinen
DE4313578A1 (de) * 1993-03-06 1994-09-08 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4313580A1 (de) * 1993-04-26 1994-10-27 Hilti Ag Werkzeugeinspannschaft
DE4338953A1 (de) * 1993-11-15 1995-05-18 Krupp Widia Gmbh Spannvorrichtung zur Verbindung eines Werkzeugkopfes und eines Werkzeughalters an Werkzeugmaschinen
DE4341971A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4341970A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4400969A1 (de) * 1994-01-14 1995-07-20 Bosch Gmbh Robert Einrichtung an Handwerkzeugmaschinen zur Drehmitnahme von Werkzeugen
CA2180542C (en) * 1994-01-14 2000-08-01 Horst Wierspecker Device for imparting a rotary driving motion to tools
DE19952225A1 (de) * 1999-10-29 2001-05-03 Hilti Ag Bohr- und/oder Meisselwerkzeug
DE10357380A1 (de) * 2003-12-05 2005-06-30 Hilti Ag Einsteckende für ein drehendes und/oder schlagendes Werkzeug
WO2008046148A1 (en) * 2006-10-20 2008-04-24 Drillroc Pneumatic Pty Ltd Down-the-hole hammer drill
US9068399B2 (en) 2006-10-20 2015-06-30 Drillroc Pneumatic Pty Ltd Down-the-hole hammer drill
DE102007000363A1 (de) * 2007-07-02 2009-01-08 Hilti Aktiengesellschaft Rührwerkzeug mit Einsteckende
CN102665980A (zh) * 2010-02-15 2012-09-12 株式会社宫永 旋转工具的装卸装置和该旋转工具
DE102010002167A1 (de) * 2010-02-22 2011-08-25 Hilti Aktiengesellschaft Herstellungsverfahren für ein Einsteckende
ZA201208086B (en) * 2012-01-17 2013-05-29 Drillroc Pneumatic Pty Ltd Down-the-hole hammer drill
US20220219306A1 (en) * 2021-01-14 2022-07-14 Milwaukee Electric Tool Corporation Tool bit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7536182U (de) * 1975-11-14 1978-02-02 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur drehmomentuebertragung
DE2811328C2 (de) * 1978-03-16 1986-09-25 Robert Bosch Gmbh, 7000 Stuttgart Bohrfutter
DE3416966C2 (de) * 1984-05-08 1986-10-30 Günter Horst 7927 Sontheim Röhm Bohrfutter
DE3745046C2 (de) * 1987-05-20 1996-07-25 Bosch Gmbh Robert Werkzeugaufnahme einer Handwerkzeugmaschine mit verdrehsicher einsetzbarem Werkzeug
DE3824894A1 (de) * 1988-07-22 1990-01-25 Bosch Gmbh Robert Einrichtung an handwerkzeugmaschinen zur drehmomentuebertragung
FR2635039B1 (fr) * 1988-08-05 1990-11-02 Prospection & Inventions Foret comprenant une queue avec des rainures
DE3941646A1 (de) * 1989-12-16 1991-06-20 Heller Werkzeug Gmbh Geb Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge
DE4032739A1 (de) * 1990-10-16 1992-04-23 Bosch Gmbh Robert Werkzeug
US5340245A (en) * 1990-10-16 1994-08-23 Robert Bosch Gmbh Device on portable machine tools
DE4105414A1 (de) * 1991-02-21 1992-08-27 Hilti Ag Werkzeug und werkzeughalter fuer handwerkzeuggeraete

Also Published As

Publication number Publication date
JPH05253863A (ja) 1993-10-05
DE59205399D1 (de) 1996-03-28
FI97029B (fi) 1996-06-28
EP0548008A1 (de) 1993-06-23
FI925566A0 (fi) 1992-12-08
US5324145A (en) 1994-06-28
FI925566A (fi) 1993-06-19
KR930012210A (ko) 1993-07-20
KR100201712B1 (ko) 1999-06-15
FI97029C (fi) 1996-10-10
DK0548008T3 (da) 1996-05-20
DE4141846A1 (de) 1993-06-24

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