EP0768150A1 - Porte-outil - Google Patents

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Publication number
EP0768150A1
EP0768150A1 EP96810256A EP96810256A EP0768150A1 EP 0768150 A1 EP0768150 A1 EP 0768150A1 EP 96810256 A EP96810256 A EP 96810256A EP 96810256 A EP96810256 A EP 96810256A EP 0768150 A1 EP0768150 A1 EP 0768150A1
Authority
EP
European Patent Office
Prior art keywords
tool holder
rolling
tool
driver
receiving sleeve
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
EP96810256A
Other languages
German (de)
English (en)
Other versions
EP0768150B1 (fr
Inventor
Hans-Werner Bongers-Ambrosius
Jörg Eichhorn
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 EP0768150A1 publication Critical patent/EP0768150A1/fr
Application granted granted Critical
Publication of EP0768150B1 publication Critical patent/EP0768150B1/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
    • 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
    • B25D2217/0038—Locking members of special shape
    • 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
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0042—Ball-shaped locking members
    • 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
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0049—Roll-shaped locking members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/355—Use of rolls
    • 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
    • Y10T279/17076—Spreading elements
    • 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
    • Y10T279/17666—Radially reciprocating jaws
    • Y10T279/17692—Moving-cam actuator
    • Y10T279/17743—Reciprocating cam sleeve
    • Y10T279/17752—Ball or roller jaws
    • 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

Definitions

  • the invention relates to a tool holder for tools which have at least one axially closed locking groove and at least one rotary driving groove which is open towards the rear end face, at least one locking element for the locking groove being mounted radially displaceably in a receiving sleeve and at least one driver being arranged for the rotating driving groove.
  • a tool holder for hand-held power tools is known, it being possible to use tools in the tool holder which, for example, have two axially closed locking grooves and two rotary driving grooves open towards the rear end.
  • the hand-held machine tools that are primarily considered here are predominantly rotary hammers, combination hammers and chisel hammers.
  • These hand-held power tools usually transmit both a turning and a striking movement to the tool used in the tool holder, such as a drill or chisel.
  • the tool holder must therefore be designed in such a way that it can transmit torques to the tool on the one hand and on the other hand receives the tool in an axially displaceable manner, but in such a way that it does not fall out of the tool holder.
  • the known tool holder for the axial holding of the tools in a receiving sleeve has radially displaceable locking elements which engage in the axially closed locking grooves of the tools.
  • two diametrically opposite locking elements in the form of balls are provided. Due to the length of the locking grooves exceeding the locking elements, the limited axial displaceability of the tools is ensured by rolling the balls in the locking grooves.
  • drivers are provided in the receiving sleeve, for example in the form of two opposite strips. These carriers engage in the rotary driving grooves in the tools, which are open towards the rear face.
  • the object is achieved in that the driver is formed by at least one rolling element rolling along a plane running parallel to the main axis of the receiving sleeve.
  • a plurality of rolling elements are arranged one behind the other along the plane running parallel to the receiving sleeve.
  • the number of rolling elements to be provided depends in particular on the dimensioning of the tool and tool holder.
  • the rolling elements can be loosely received in the receiving sleeve of the tool holder, or it can - like this the field of rolling bearings is known - a cage for holding and spacing the rolling elements can be provided.
  • the tool holder can expediently have two drivers formed by at least one rolling element, essentially diametrically opposite.
  • the drivers can in turn be formed by one or more rolling elements arranged one behind the other.
  • rolling elements Regardless of whether it is just one or more rolling elements arranged one behind the other, these can be designed as balls. In particular in connection with the transmission of larger torques, the design of the rolling elements as cylinders is appropriate. Here, too, there is the possibility of arranging several such rolling elements designed as cylinders one behind the other.
  • a tool 1 is used in the tool holder according to FIG. 1, which has two diametrically opposite, axially closed locking grooves 2 and two diametrically opposite, rotational driving grooves 3 that are open towards the rear end.
  • the radial displaceability of the locking elements 4 is ensured by the openings 5a provided in the receiving sleeve 5.
  • Carriers 8 are used to transmit the torque in the form of cylinders, which are mounted in recesses 5b of the receiving sleeve 5.
  • the drivers 8 engage in the rotary driving grooves 3 of the tool 1.
  • a tool 11 is used in the tool holder according to FIG. 2, which has diametrically opposed two axially closed locking grooves 12 and two diametrically opposed rotational driving grooves 13 which are open towards the rear end side.
  • the axial holding of the tool 11 is provided in the form of balls with locking elements 14 which are mounted in openings 15a of a receiving sleeve 15 so as to be radially displaceable. For example, by moving an actuating sleeve 1b surrounding the receiving sleeve 15, which in turn is surrounded by a cage 17, niches can be brought into the radial projection area of the locking elements 14, into which the locking elements 14 can move to remove the tool 11.
  • drivers 18 are provided in the form of balls.
  • the drivers 18 cooperate with the rotary driving grooves 13 which are open towards the rear end side and are mounted in recesses 15b. Due to the friction-avoiding rolling of the drivers 18 in the areas that are decisive for the torque transmission, harmful wear is avoided both on the tool 11 and on parts of the tool holder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP96810256A 1995-10-09 1996-04-22 Porte-outil Expired - Lifetime EP0768150B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537560A DE19537560A1 (de) 1995-10-09 1995-10-09 Werkzeughalter
DE19537560 1995-10-09

Publications (2)

Publication Number Publication Date
EP0768150A1 true EP0768150A1 (fr) 1997-04-16
EP0768150B1 EP0768150B1 (fr) 2001-04-11

Family

ID=7774389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810256A Expired - Lifetime EP0768150B1 (fr) 1995-10-09 1996-04-22 Porte-outil

Country Status (6)

Country Link
US (1) US5700018A (fr)
EP (1) EP0768150B1 (fr)
JP (1) JP4025381B2 (fr)
CN (1) CN1067931C (fr)
DE (2) DE19537560A1 (fr)
DK (1) DK0768150T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958342C2 (de) * 1999-12-03 2001-10-18 Bosch Gmbh Robert Drehend angetriebene Werkzeughalterung
US6688610B2 (en) 2000-05-12 2004-02-10 Power Tool Holders Incorporated Chuck with quick change
US6533291B2 (en) 2001-02-14 2003-03-18 Power Tool Holders Incorporated Chuck having quick change mechanism
US6834864B2 (en) 2001-10-24 2004-12-28 Power Tool Holders Incorporated Chuck having quick change mechanism
GB2395158B (en) * 2002-11-14 2005-11-16 Black & Decker Inc Tool holder for a rotary hammer
EP1535704B1 (fr) * 2003-11-26 2010-03-10 HILTI Aktiengesellschaft Porte-outil pour un outil rotatif à percussion
DE102004054685A1 (de) * 2004-11-12 2006-05-18 Hilti Ag Werkzeugaufnahme

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834991A1 (de) * 1978-08-10 1980-02-14 Joran Bor A S Werkzeughalterung fuer bohrhammer, schlagbohrmaschine o.dgl.
DE3328886A1 (de) * 1982-08-12 1984-02-23 Hitachi Koki Co., Ltd., Tokyo Elektrischer bohrhammer
EP0223738A2 (fr) * 1985-11-11 1987-05-27 HILTI Aktiengesellschaft Dispositif de fixation pour outils de forage et de burinage
DE3714679A1 (de) * 1985-11-11 1988-11-10 Hilti Ag Werkzeughalter
DE4341969A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1010262A1 (ru) * 1981-03-11 1983-04-07 Кыштымский машиностроительный завод им.М.И.Калинина Устройство дл соединени буровой коронки с погружным ударным механизмом
SU985274A1 (ru) * 1981-08-03 1982-12-30 Кыштымский машиностроительный завод им.М.И.Калинина Устройство дл соединени буровой коронки с погружным ударным механизмом
SU1488426A1 (ru) * 1987-10-29 1989-06-23 Kyshtymskij Mashinostroitelnyj Буpoboй иhctpуmeht

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834991A1 (de) * 1978-08-10 1980-02-14 Joran Bor A S Werkzeughalterung fuer bohrhammer, schlagbohrmaschine o.dgl.
DE3328886A1 (de) * 1982-08-12 1984-02-23 Hitachi Koki Co., Ltd., Tokyo Elektrischer bohrhammer
EP0223738A2 (fr) * 1985-11-11 1987-05-27 HILTI Aktiengesellschaft Dispositif de fixation pour outils de forage et de burinage
DE3714679A1 (de) * 1985-11-11 1988-11-10 Hilti Ag Werkzeughalter
DE4341969A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte

Also Published As

Publication number Publication date
JP4025381B2 (ja) 2007-12-19
CN1147994A (zh) 1997-04-23
DE19537560A1 (de) 1997-04-10
EP0768150B1 (fr) 2001-04-11
DE59606752D1 (de) 2001-05-17
DK0768150T3 (da) 2001-05-07
US5700018A (en) 1997-12-23
CN1067931C (zh) 2001-07-04
JPH09117810A (ja) 1997-05-06

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