EP0662369B1 - Outil et porte-outil pour machines-outils portatives - Google Patents

Outil et porte-outil pour machines-outils portatives Download PDF

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Publication number
EP0662369B1
EP0662369B1 EP94810615A EP94810615A EP0662369B1 EP 0662369 B1 EP0662369 B1 EP 0662369B1 EP 94810615 A EP94810615 A EP 94810615A EP 94810615 A EP94810615 A EP 94810615A EP 0662369 B1 EP0662369 B1 EP 0662369B1
Authority
EP
European Patent Office
Prior art keywords
grooves
tool
locking groove
pickup
tool according
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
EP94810615A
Other languages
German (de)
English (en)
Other versions
EP0662369A1 (fr
Inventor
Josef Obermeier
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 EP0662369A1 publication Critical patent/EP0662369A1/fr
Application granted granted Critical
Publication of EP0662369B1 publication Critical patent/EP0662369B1/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
    • 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
    • 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 for insertion into a tool holder for the Chisels and / or impact drilling hand tools with a clamping shank, the one with at least two axially open towards the free end of the clamping shaft Rotational driving grooves is provided, the diametrically opposite, have flanks on the entraining side and in the peripheral region between the Rotary driving grooves at least one axially closed locking groove is arranged.
  • the Clamping shank of these tools at least one axially closed locking groove as well as one or two rotary driving grooves open axially towards the free end of the clamping shaft having.
  • the tool holder which is used to hold these tools serves, thus has at least one radially displaceable locking element in shape a ball or possibly in the form of a roller. In cooperation this locking element comes with the axially closed locking groove an axially positive connection between tool and tool holder.
  • the axially positive connection serves to secure the holder of the tool in the tool holder. From the point of view of the bracket, this is neither Locking groove still locking element particularly high loads subject. Larger forces can only occur when the tool pulled out of a hole in a component by means of the hand tool must be under certain circumstances still certain forces due to jamming are to be overcome. In such cases, there may be occasions Overstressing comes from the tool coming out in an unwanted way the tool holder can be pulled out.
  • the invention has for its object to provide a tool in which the Clamping shank in cooperation with a suitable tool holder premature wear leading to failure.
  • the object is achieved in that at least one of the rotary driving grooves another locking groove forming one from the rear Face of the shoulder surface facing away from the clamping shaft in its axial projection passes through and in the circumferential area opposite the locking groove between the rotary driving grooves at least one, axially to the free end of the clamping shaft open, longitudinal groove is provided.
  • the tool according to the invention achieved advantages in two directions.
  • the direction is going that the axially positive connection due to the further locking groove can be improved.
  • This further locking groove enables the arrangement a further locking element, which with the from the front of the Clamping shaft of the shoulder surface facing away cooperates.
  • a significant increase The result is that the axially transferable forces are the result, so that when pulling out of the drilling tool from the hole in a component itself when jamming the No problems arise.
  • the far greater advantage achieved in the tool according to the invention in interaction with a suitable tool holder is that due to the longitudinal groove higher torques can be transmitted, since the area share on flanks on the driving side thereby being significantly increased. This can largely wear out the tools be reduced so that tool failure due to premature Wear on the clamping shaft no longer occurs.
  • both the clear cross-sectional shape of the rotary driving grooves and that of the longitudinal grooves can be completely different. So the rotary driving grooves and the longitudinal grooves have a U-shaped, a V-shaped or a flattened shape, it being only the decisive factor is that there is a flank on the entraining side, at least in some areas runs essentially radially.
  • the tool holder that is considered here has a locking element and diametrically opposite a carrier bar.
  • the advantage of compatibility is shown when using the tool according to the invention in this known tool holder achieved no further advantage, especially not in Direction enlargement of the decisive ones for the transmission of the torques Area shares of the flanks on the driving side.
  • the term groove also to be understood broadly is that flats fall under it, the longitudinal grooves are at least in some areas provided essentially radially extending flanks on the driving side.
  • the essentially Radially running, flank-side area of the flanks creates optimal wear-minimizing Ratios in the transmission of the occurring torques.
  • the tool according to the invention has the advantage that it is compatible with various tool holders on the market is. However, this compatibility is paid for by the fact that the inventive Benefits have not yet been fully exploited.
  • the advantages according to the invention but are fully exhausted when the tools according to the invention are used in a tool holder, the at least one with the axially closed Locking grooves interacting, radially displaceable locking element, at least two with the axially towards the free end of the clamping shaft open rotary driving grooves, interacting driving bars and at least one cooperating with the longitudinal grooves open axially towards the free end of the clamping shaft Has longitudinal bar.
  • the tool shown in FIG. 1 has a clamping shank 1, which with an axially closed locking groove 2 is provided. Furthermore, the clamping team 1 with two rotary driving grooves 3, the driving-side flanks 3a are substantially diametrically opposed to each other. One of the rotary driving grooves 3 penetrates a further locking groove 4 such that one of the rear Forms front side of the clamping shaft 1 facing away from the shoulder surface 4a.
  • the locking groove 2 is arranged diametrically opposite a longitudinal groove 5 with a flank 5a on the driving side.
  • the tool according to FIG. 2 has a clamping shank 6, which in turn has a axially closed locking groove 7 is provided.
  • there are two rotary driving grooves 8 mutually substantially diametrically opposite, driving side Flanks 8a are provided.
  • One of the rotary driving grooves 8 penetrates one further locking groove 9 in such a way that one from the rear end side of the clamping shaft 6 forms shoulder surface 9a facing away.
  • a longitudinal groove 10 with a flank 10a on the driving side is located in that opposite the locking groove 7 Circumferential region of the clamping shaft 6 arranged in one of the Locking groove 7 is not diametrically opposite manner.
  • clamping shaft 11 has two longitudinal grooves 15, each with flanks 15a on the entraining side, which in the circumferential region the locking groove 12 is opposite, are arranged.
  • one of the locking grooves 3, 8, 13 is each with one provided larger clear cross-section.
  • This enlargement of the clear cross section should only be the possibility of compatibility with one on the market Show tool holder that has a carrier bar designed in this way.
  • Relevant and of importance for the present invention is in particular that Arrangement of the flanks 3a, 8a, 13a on the driving side, which are used both in the tool holder according to the invention when used in a tool holder of the known type mentioned and when used in a tool holder according to DE-PS 25 51 125 are authoritative.
  • Fig. 4 shows a section through a simplified tool holder for a tool with a clamping shank 1 corresponding to FIG. 1.
  • the tool holder has a guide 16, an actuating ring 17 and a cage 18.
  • a locking element 19 is in the guide 16 within an opening 16a Shape of a ball mounted radially.
  • the guide 16 with carrier strips 16b and a longitudinal bar 16c. Both drive bars 16b and Longitudinal bar 16c serve to transmit the torque.
  • Driving bars 16b can be used, one of these driving bars 16b the corresponding rotary driving groove 3 does not completely fill, because for the transmission of the torque, only the interaction of the flanks 3a on the driving side is decisive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Drilling Tools (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (10)

  1. Outil à insérer dans le mandrin d'appareils portatifs servant au burinage et/ou forage à percussion, comprenant une queue de fixation (1, 6, 11) pourvue d'au moins deux gorges d'entraínement en rotation (3, 8, 13) qui sont ouvertes axialement vers l'extrémité libre de la queue d'entraínement (1, 6, 11) et qui, côté entraínement, comportent des flancs sensiblement diamétralement opposés (3a, 8a, 13a), au moins une gorge de verrouillage fermée axialement (2, 7, 12) étant prévue dans la zone circonférentielle située entre les gorges d'entraínement en rotation (3, 8, 13), caractérisé en ce qu'au moins l'une des gorges d'entraínement en rotation (3, 8, 13) traverse en projection axiale une gorge de verrouillage supplémentaire (4, 9, 14) en formant un épaulement (4a, 9a, 14a) situé à l'opposé de la face frontale arrière de la queue d'entraínement (1, 6, 11), et au moins une gorge longitudinale (5, 10, 15) ouverte axialement vers l'extrémité libre de la queue d'entraínement (1, 6, 11) est prévue dans la zone circonférentielle située à l'opposé de la gorge de verrouillage (2, 7, 12) et comprise entre les gorges d'entraínement en rotation (3, 8, 13).
  2. Outil selon la revendication 1, caractérisé en ce que les flancs situés côté entraínement (3a, 8a, 13a) des gorges d'entraínement en rotation (3, 8, 13) présentent, dans le sens circonférentiel, des distances différentes par rapport à la gorge de verrouillage (2, 7, 12).
  3. Outil selon la revendication 1 ou 2, caractérisé en ce que la gorge de verrouillage supplémentaire (4, 9, 14) est diamétralement opposée à l'une des gorges d'entraínement en rotation (3, 8, 13).
  4. Outil selon l'une des revendications 1 à 3, caractérisé en ce que deux gorges d'entraínement en rotation sont diamétralement opposées l'une à l'autre.
  5. Outil selon l'une des revendications 1 à 4, caractérisé en ce que l'une des gorges d'entraínement en rotation (3, 8, 13) traverse la gorge de verrouillage supplémentaire (4, 9, 14) en projection axiale, de façon que leurs distances dans le sens circonférentiel par rapport à l'axe de symétrie de la gorge de verrouillage supplémentaire (4, 9, 14) soient inégales.
  6. Outil selon l'une des revendications 1 à 3, caractérisé en ce qu'il est prévu une seule gorge longitudinale (5, 10).
  7. Outil selon la revendication 6, caractérisé en ce que la gorge longitudinale (5) est diamétralement opposée à la gorge de verrouillage (2).
  8. Outil selon l'une des revendications 1 à 5, caractérisé en ce qu'il est prévu plusieurs gorges longitudinales (15).
  9. Outil selon l'une des revendications 1 à 8, caractérisé en ce que les gorges longitudinales (5, 10, 15) comportent, côté entraínement, un flanc (5a, 10a, 15a) qui, au moins dans certaines zones, s'étend sensiblement radialement.
  10. Mandrin pour un outil selon la revendication 1, comprenant un moyen de guidage (16) qui comporte un orifice de logement et qui comprend au moins deux barrettes d'entraínement (16b) coopérant avec les gorges d'entraínement en rotation (3, 8, 13) ouvertes axialement vers l'extrémité libre de la queue d'entraínement (1, 6, 11) ainsi qu'au moins un élément de verrouillage (19, 19a) qui coopère avec les gorges de verrouillage fermées axialement (2, 7, 12) et peut se déplacer radialement dans un trou débouchant (16a), caractérisé en ce que le moyen de guidage (16) comporte une barrette longitudinale (16c) qui coopère avec les gorges longitudinales (5, 10, 15) ouvertes axialement vers l'extrémité libre de la queue d'entraínement (1, 6, 11) et qui est prévue dans la zone circonférentielle comprise entre les barrettes d'entraínement (16b).
EP94810615A 1993-12-09 1994-10-25 Outil et porte-outil pour machines-outils portatives Expired - Lifetime EP0662369B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341971A DE4341971A1 (de) 1993-12-09 1993-12-09 Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4341971 1993-12-09

Publications (2)

Publication Number Publication Date
EP0662369A1 EP0662369A1 (fr) 1995-07-12
EP0662369B1 true EP0662369B1 (fr) 1998-01-28

Family

ID=6504558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810615A Expired - Lifetime EP0662369B1 (fr) 1993-12-09 1994-10-25 Outil et porte-outil pour machines-outils portatives

Country Status (7)

Country Link
US (1) US5542797A (fr)
EP (1) EP0662369B1 (fr)
JP (1) JP3442884B2 (fr)
CN (1) CN1070757C (fr)
DE (2) DE4341971A1 (fr)
DK (1) DK0662369T3 (fr)
HU (1) HU216123B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ287520B6 (en) * 1994-01-14 2000-12-13 Bosch Gmbh Robert Mechanism of hand-held cutting device for rotary driving of impact and/or drilling tools, a tool and a tool holder
CN1105613C (zh) * 1998-07-09 2003-04-16 株式会社家.B.M. 钻头构件,钻头工具及钻头构件的制造方法
DE10005366A1 (de) * 2000-02-07 2001-08-09 Hilti Ag Werkzeughalter
US8668411B2 (en) * 2009-09-16 2014-03-11 Iscar, Ltd. Cutting tool and holder
IL200980A0 (en) * 2009-09-16 2010-05-17 Iscar Ltd Cutting tool and holder

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551125A1 (de) * 1975-11-14 1977-05-26 Bosch Gmbh Robert Einrichtung zur drehmomentuebertragung
DE3429419A1 (de) * 1984-08-09 1986-02-20 Hilti Ag, Schaan Bohrwerkzeug fuer handbohrmaschinen
DE3539654C2 (de) * 1985-03-20 1994-02-10 Roehm Gmbh Bohrfutter und Werkzeug zum drehenden und drehschlagenden Bohren
DE3716915A1 (de) * 1987-05-20 1988-12-08 Bosch Gmbh Robert Einrichtung an handwerkzeugmaschinen zur drehmomentuebertragung
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
DE4141846A1 (de) * 1991-12-18 1993-06-24 Hilti Ag Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge
DE4242452A1 (de) * 1992-07-15 1994-01-20 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE9314416U1 (de) * 1993-09-23 1993-12-09 Plica Werkzeugfabrik Ag Mollis Werkzeugschaft

Also Published As

Publication number Publication date
HUT69580A (en) 1995-09-28
CN1109815A (zh) 1995-10-11
HU216123B (hu) 1999-04-28
US5542797A (en) 1996-08-06
CN1070757C (zh) 2001-09-12
DE4341971A1 (de) 1995-06-14
DE59405176D1 (de) 1998-03-05
EP0662369A1 (fr) 1995-07-12
JP3442884B2 (ja) 2003-09-02
JPH07251310A (ja) 1995-10-03
DK0662369T3 (da) 1998-09-21

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