EP0657253A2 - Outil et mandrin pour des outil à main - Google Patents

Outil et mandrin pour des outil à main Download PDF

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Publication number
EP0657253A2
EP0657253A2 EP94810647A EP94810647A EP0657253A2 EP 0657253 A2 EP0657253 A2 EP 0657253A2 EP 94810647 A EP94810647 A EP 94810647A EP 94810647 A EP94810647 A EP 94810647A EP 0657253 A2 EP0657253 A2 EP 0657253A2
Authority
EP
European Patent Office
Prior art keywords
tool
grooves
rotary driving
further longitudinal
clamping shaft
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.)
Withdrawn
Application number
EP94810647A
Other languages
German (de)
English (en)
Other versions
EP0657253A3 (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 EP0657253A2 publication Critical patent/EP0657253A2/fr
Publication of EP0657253A3 publication Critical patent/EP0657253A3/fr
Withdrawn legal-status Critical Current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 inserting into a tool holder for chiseling and / or impact drilling hand tool devices with a clamping shank which has at least two rotating driving grooves that are open axially towards the free end of the clamping shaft and at least one axially closed locking groove in the circumferential area between the rotating driving grooves.
  • the clamping shank of these tools having one or two axially closed locking grooves and one or two rotational driving grooves open axially towards the free end of the clamping shank.
  • the tool holder which is used to hold these tools, has one or two radially displaceable locking elements, which in the present case are designed in the form of balls, it being known to use rollers as locking elements instead of balls.
  • the interaction of these locking elements with the axially closed locking grooves creates a positive connection between the tool and the tool holder. By radially disengaging the locking elements, this positive connection can be canceled so that the tools can be removed from the tool holder.
  • the invention is therefore based on the object of creating a tool which, in particular in cooperation with a suitable tool holder, enables transmission of the torques which is not subject to wear and tear in such a way that the failure-related wear of the tools associated with the rotary driving grooves does not precede the application-related wear of the work area Tools occurs.
  • the object is achieved in that the locking groove in its axial projection is overlapped by a longitudinal groove which is open axially towards the free end of the clamping shaft in such a way that a shoulder surface facing away from the rear end face of the clamping shaft forms and in the circumferential area opposite the locking groove between the rotary driving grooves at least one, further longitudinal groove open axially towards the free end of the clamping shaft is provided.
  • the arrangement of at least one longitudinal groove and at least one further longitudinal groove creates additional flanks which are available for use in the transmission of the torque.
  • the shoulder surface formed in the overlap area of the locking groove and the longitudinal groove continues to serve for the transmission of axial forces, whereby it must be taken into account that these occurring axial forces are low and only occur when the tool is pulled out of the bore of a component.
  • the shoulder surface which is decisive for the transmission of such axial forces is thus completely sufficient.
  • the further longitudinal groove is expediently diametrically opposite the locking groove.
  • the diametrically opposed longitudinal groove and locking groove can be further expanded in the direction of symmetry by advantageously arranging the longitudinal groove to form equal distances in the circumferential direction from the adjacent rotary driving grooves.
  • Both the arrangement of the further longitudinal groove in the same and at unequal distances in the circumferential direction to the adjacent rotary driving grooves can be combined with the requirement according to which the clear cross section of the rotating driving grooves is expediently exceeded by the clear cross section of the further longitudinal groove.
  • This requirement is to be taken into account in particular when the further longitudinal groove is arranged at equal distances in the circumferential direction from the adjacent rotary driving grooves, since the aforementioned known tool holder has a driving bar designed in this regard diametrically opposite the locking groove. This ensures full compatibility with the tool holder known in this regard.
  • the longitudinal groove is expediently arranged to form unequal spacings in the circumferential direction from the adjacent rotary driving grooves.
  • the locking groove is at equal distances from the adjacent rotary driving grooves in the circumferential direction, this creates a displacement which creates the decisive size of the shoulder surface.
  • the longitudinal groove and the further longitudinal grooves advantageously have a flank on the entraining side, which extends essentially radially at least in some areas.
  • the only decisive factor is that there is a flank on the driver side, at least one region of this flank running essentially radially.
  • the tool designed in the above manner thus has the advantage that it can be used in various types of tool holders on the market.
  • tool holders according to DE-PS 25 51 125 in tool holders with two diametrically opposite locking elements and also in tool holders in which a carrier bar is diametrically opposite a locking element.
  • the use of the tool according to the invention in these known tool holders never takes full advantage of the advantages according to the invention, namely with regard to achieving wear resistance when transmitting larger torques.
  • the tool according to the invention achieves the advantage of compatibility with various tool holders on the market.
  • the advantages according to the invention are fully exploited when the tool according to the invention is inserted into a tool holder which has at least one radially displaceable locking element interacting with the axially closed locking grooves, at least two driving bars interacting with the rotary driving grooves which are open axially towards the free end of the clamping shaft one with the axially open towards the free end of the clamping shaft Longitudinal groove interacting longitudinal bar and at least one further longitudinal bar cooperating with the further longitudinal grooves open axially towards the free end of the clamping shaft.
  • the arrangement of the longitudinal bar and further longitudinal bars can vary according to the arrangement and design of the longitudinal groove and further longitudinal grooves.
  • the clamping shaft 1 has a clamping shank 1 shown in section.
  • the clamping shaft 1 is provided with two diametrically opposite rotary driving grooves 2 which are open axially towards its free end.
  • An axially closed locking groove 3 is provided at circumferentially equal distances from the rotary driving grooves 2.
  • the locking groove 3 is penetrated by a longitudinal groove 4.
  • a shoulder surface 3a facing away from the rear end face of the clamping shank 1 is formed, which serves to transmit axial forces.
  • FIG. 1 also shows, in the circumferential area opposite the locking groove 3 between the rotary driving grooves 2 there is a further longitudinal groove 5 which is open towards the free end of the clamping shaft 1.
  • this further longitudinal groove 5 is arranged at equal distances from the rotary driving grooves 2 in the circumferential direction.
  • FIG. 2 shows a further tool, the clamping shank 6 of which in turn has two rotary driving grooves 7 which are open axially towards its free end.
  • An axially closed locking groove 8 is provided at equal distances in the circumferential direction to the rotary driving grooves 7.
  • This locking groove 8 is penetrated by a longitudinal groove 9 which is offset such that a shoulder surface 8a facing away from the rear end face of the clamping shaft 6 is formed.
  • a further longitudinal groove 10 is provided which is open axially towards the free end of the clamping shaft 6.
  • This further longitudinal groove 10 is at unequal distances in the circumferential direction from the rotary driving grooves 7, which leads to the prevention of incorrect locking in certain tool holders on the market.
  • the tool according to FIG. 3 has a clamping shank 11 which is diametrically opposed to one another and is provided with rotational driving grooves 12 which are open axially towards its free end.
  • a locking groove 13 is provided, which is overlapped by a longitudinal groove 14, which is open axially towards the free end of the clamping shaft 11.
  • a shoulder surface 13a facing away from the rear end face of the clamping shaft 11 is formed.
  • two further longitudinal grooves 15 are provided which are open axially towards its free end.
  • the further longitudinal grooves 15 have the same distances in the circumferential direction from the rotary driving grooves 12.
  • FIG. 4 shows a section through a tool holder shown in simplified form, into which a tool with a clamping shank 1 corresponding to FIG. 1 is inserted.
  • the tool holder essentially consists of a guide 16, an actuating sleeve 17 and a cage 18.
  • the guide 16 has two diametrically opposed carrier bars 16a as well as a longitudinal bar 16b and a further longitudinal bar 16c.
  • the carrier strips 16a, the longitudinal strip 16b and the further longitudinal strip 16c are decisive for the transmission of the torque, the wear resistance being ensured by the arrangement of the longitudinal strip 16b and the further longitudinal strip 16c during the transmission of this torque.
  • a ball is provided as a locking element 19 for the axial locking of the tool provided with the clamping shank 1.
  • This locking element 19 is radially displaceably mounted, so that the tool can be removed from the tool holder by disengaging from the locked state shown in FIG. 4.
  • an opening 16d is provided in the guide 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling Tools (AREA)
EP94810647A 1993-12-09 1994-11-10 Outil et mandrin pour des outil à main. Withdrawn EP0657253A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341970 1993-12-09
DE4341970A DE4341970A1 (de) 1993-12-09 1993-12-09 Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte

Publications (2)

Publication Number Publication Date
EP0657253A2 true EP0657253A2 (fr) 1995-06-14
EP0657253A3 EP0657253A3 (fr) 1995-09-06

Family

ID=6504557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810647A Withdrawn EP0657253A3 (fr) 1993-12-09 1994-11-10 Outil et mandrin pour des outil à main.

Country Status (6)

Country Link
US (1) US5529444A (fr)
EP (1) EP0657253A3 (fr)
JP (1) JPH07185916A (fr)
CN (1) CN1070756C (fr)
DE (1) DE4341970A1 (fr)
HU (1) HU216589B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4400969A1 (de) * 1994-01-14 1995-07-20 Bosch Gmbh Robert Einrichtung an Handwerkzeugmaschinen zur Drehmitnahme von Werkzeugen
JPH09504236A (ja) * 1994-01-14 1997-04-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 手持ち式工作機械に設けられた、工具を回転連行する装置
DE20204416U1 (de) * 2002-03-19 2002-07-11 Heller Dinklage Gmbh Geb Werkzeug für eine Handwerkzeugmaschine
AU2010202839B1 (en) * 2009-11-13 2011-03-24 Simon Dean Gischus Machine Tool Bit
KR20120082035A (ko) * 2009-11-13 2012-07-20 이안 라클란 킬패트릭 공작기계 비트 설계
WO2011099100A1 (fr) * 2010-02-15 2011-08-18 株式会社ミヤナガ Dispositif d'installation et de retrait d'outil de rotation et outil de rotation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171358A2 (fr) * 1984-08-09 1986-02-12 HILTI Aktiengesellschaft Outil de forage pour perceuses à main
EP0355071A1 (fr) * 1988-08-05 1990-02-21 Societe De Prospection Et D'inventions Techniques Spit Foret comprenant une queue avec des rainures
EP0548008A1 (fr) * 1991-12-18 1993-06-23 HILTI Aktiengesellschaft Outil pour forage à percussion et ciselage et mandrin pour cet outil
EP0551795A1 (fr) * 1992-01-13 1993-07-21 HILTI Aktiengesellschaft Outil pour forage à percussion et ciselage et mandrin pour cet outil
DE9314416U1 (de) * 1993-09-23 1993-12-09 Plica Werkzeugfabrik Ag Mollis Werkzeugschaft
EP0579579A1 (fr) * 1992-07-15 1994-01-19 HILTI Aktiengesellschaft Outil et mandrin pour outil portatif

Family Cites Families (3)

* 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
DE3824894A1 (de) * 1988-07-22 1990-01-25 Bosch Gmbh Robert Einrichtung an handwerkzeugmaschinen zur drehmomentuebertragung
US5173037A (en) * 1991-12-09 1992-12-22 General Motors Corporation Automotive fuel pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171358A2 (fr) * 1984-08-09 1986-02-12 HILTI Aktiengesellschaft Outil de forage pour perceuses à main
EP0355071A1 (fr) * 1988-08-05 1990-02-21 Societe De Prospection Et D'inventions Techniques Spit Foret comprenant une queue avec des rainures
EP0548008A1 (fr) * 1991-12-18 1993-06-23 HILTI Aktiengesellschaft Outil pour forage à percussion et ciselage et mandrin pour cet outil
EP0551795A1 (fr) * 1992-01-13 1993-07-21 HILTI Aktiengesellschaft Outil pour forage à percussion et ciselage et mandrin pour cet outil
EP0579579A1 (fr) * 1992-07-15 1994-01-19 HILTI Aktiengesellschaft Outil et mandrin pour outil portatif
DE9314416U1 (de) * 1993-09-23 1993-12-09 Plica Werkzeugfabrik Ag Mollis Werkzeugschaft

Also Published As

Publication number Publication date
EP0657253A3 (fr) 1995-09-06
HUT69912A (en) 1995-09-28
US5529444A (en) 1996-06-25
CN1112869A (zh) 1995-12-06
CN1070756C (zh) 2001-09-12
DE4341970A1 (de) 1995-06-14
JPH07185916A (ja) 1995-07-25
HU216589B (hu) 1999-07-28

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