EP1535704A1 - Porte-outil pour un outil rotatif à percussion - Google Patents

Porte-outil pour un outil rotatif à percussion Download PDF

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Publication number
EP1535704A1
EP1535704A1 EP04105837A EP04105837A EP1535704A1 EP 1535704 A1 EP1535704 A1 EP 1535704A1 EP 04105837 A EP04105837 A EP 04105837A EP 04105837 A EP04105837 A EP 04105837A EP 1535704 A1 EP1535704 A1 EP 1535704A1
Authority
EP
European Patent Office
Prior art keywords
tool holder
holder according
rotary driving
radialbezugsmass
tool
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
EP04105837A
Other languages
German (de)
English (en)
Other versions
EP1535704B1 (fr
Inventor
Werner Kleine
Werner Britten
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 EP1535704A1 publication Critical patent/EP1535704A1/fr
Application granted granted Critical
Publication of EP1535704B1 publication Critical patent/EP1535704B1/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
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17068—Rotary socket

Definitions

  • the invention refers to a tool holder for an at least partially rotating and / or a beating tool such as a drill bit, chisel or cutting bit for processing rocks, concrete or masonry.
  • a tool receptacle for a male end has one of a machine
  • Rotary driving webs and radially inwardly displaceable locking body By going to the transfer of a given torque on the tool necessary resulting high surface pressure are the terms of the guide surfaces radially inwardly arranged rotational support webs a exposed to high wear, which the life of the Tool holder limited.
  • tool holders for the construction industry used hand tool machines which are brittle materials such as concrete and Work masonry and produce abrasive overburden, is a low wear the tool holders for the reliability of the hand tool of Importance.
  • such a tool holder has two with respect to the Guide surfaces radially inwardly located rotational support webs and axially offset four with respect to the guide surfaces radially outward rotary drive grooves with a central angle of rotation of 45 °.
  • the guide surfaces radially outward rotary drive grooves with a central angle of rotation of 45 °.
  • the four symmetrically distributed rotary drive grooves central Restnutwinkel of 45 ° not sufficient guide space for the radially displaceable Locking body, which is arranged axially offset for this reason, resulting in the tool holder unfavorably extended.
  • DE19604283A1 has another such tool holder in addition to the two with respect to the guide surfaces radially inner rotary driving webs in addition three radially outward rotary drive grooves, which are circumferentially distributed symmetrically.
  • the partially with a central Drehnutwinkel smaller 30 ° narrow rotational drive grooves is necessary a Einsteckende with a narrow rotary drive wing smaller 30 ° suitable assigned. Due to the disproportionate dependence of the extensive Bending stiffness of rotary driving blades whose elastic / plastic deformation of a Surface contact would lead to a high-wear line contact is in such narrow rotational drive wing the surface pressure and thus the per unit area transmittable torque of the tool holder limited.
  • the object of the present invention is to realize a short Tool holder, which can transmit high torques wear.
  • a tool holder for a longitudinal axis along an at least partially rotating and / or an impact tool in a coaxial Radialbezugsmass which the Inner radius corresponds, fully open receiving sleeve with one, at least partially with the Radialbezugsmass along the axis constantly extending, Guide inner surface, the at least three inside formed in the receiving sleeve, until to an axially free end face open axially extending rotary driving grooves axially are located upstream, at least at 0 °, 120 ° and 240 ° radially outside of the Radialbezugsmasses extend, and at least one on the Radialbezugsmass radially displaceable locking body on the circumference between two adjacent Rotary drive grooves and arranged diametrically opposite the third rotary driving groove is, wherein a Radialbezugsmass determined central Drehnutwinkel the Each rotary drive grooves is at least 40 °.
  • each Drehitddlingnut one by a constant minimum gap, optimally 0.8 mm, extended, substantially radial to Radialbezugsmass R radial Rotary increment depth in the value range from R / 6 to R / 3, further advantageously exactly R / 4.5, whereby an associated insertion end of a wing height h, which with the to Torque transmission available circumferentially oriented contact surface as essential wear-determining parameters are linearly correlated, with respect to the Material pairing for tool holders and axially impacted tools in abrasive environment is set to a tribologically suitable range of values.
  • each Drehit Vietnamese screw above Drehit Vietnamese ttiefe an axial Rotary drive groove length of at least 30 mm, which under HERTZ'scher Pressing wear-resistant transferable torque is practically sufficient dimensioned.
  • the central Drehnutwinkel the rotary driving grooves each a maximum of 70 °, whereby a sufficiently between two circumferentially adjacent rotary driving grooves large central sleeve segment angle for guiding the radially displaceable Locking body remains, with symmetrical equal distribution of exactly three Rotary drive grooves at least 50 ° each.
  • the central sleeve segment angle between two circumferentially adjacent rotary drive grooves between 50 ° and 80 °, whereby the Radialbezugsmass R a stop web to the radial stop of a circular cross-section in the axial cross section Lock body with one, one between two rotary drive wings of the An inserting associated locking groove substantially filling the circle section a diameter in the range of 1.2 R to 1.8 R, further advantageous one Diameter of 1.4 R, remains in the radially inner locking position.
  • the locking body is formed roller-shaped and parallel to the axis oriented, whereby a higher axial shear strength is given.
  • a plurality of locking body are present, optimally exactly three, thereby the tool holder higher axial forces are transferable to the locked tool, especially when pulling out of a borehole.
  • the rotary driving grooves on the machine side a circumferentially closed, inner cylinder jacket-shaped leading end region of the inner surface of the guide RadialWhensmasses R downstream, resulting in an associated, machine side end-side outer guide surface of the insertion high bending moments are transferable.
  • the leading end region has a guide length in the value range 1 R to 3 R, further advantageously exactly 2 R, whereby within this guide length a seal against the penetration of abrasive dust into the tool holder can continue advantageous with a sealant such as a rubber lip seal.
  • the rotary driving groove 5 has an axial Actuator length L of 40 mm, within which a roller-shaped and arranged parallel to the axis A, radially displaceable locking body 6 is, which is arranged diametrically to the rotary driving 5 and in the illustrated Locking position both inside and outside the Radialbezugsmasses R extends.
  • Downstream of the rotary driving groove 5 is the circumferentially closed, inner cylinder jacket-shaped machine-side leading end region 13 of FIG Guide inner surface 12 with a guide length F of 2.0 R, which for sealing against the penetration of abrasive dust into the tool holder 1 a sealant 10 is assigned in the form of a rubber lip seal.
  • the tool holder 1 has exactly three internal rotational drive grooves 5, which is rotationally symmetric at 0 °, 120 ° and 240 ° radially outside the Radialbezugsmasses R extend, and one on the Radialbezugsmass R radially displaceable locking body 6, the circumference between two adjacent Rotary driving grooves 5 and diametrically opposite the third rotary driving 5 is arranged.
  • a Radialbezugsmass R specific central Drehnutwinkel ⁇ of Rotary drive 5 is 45 ° each.
  • the remaining central Sleeve segment angle ⁇ for guiding the radially displaceable locking body 6 amounts 75 °.
  • Each rotational drive groove 5 has a constant minimum gap size S of 0.8 mm extended, substantially proportional to 1 / 4.5 radial reference mass R radial Drehit fortuneuttiefe H on.
  • the cylindrical locking body 6 of the diameter D. of 1.4 R strikes in its radially inner locking position at a until the Radialbezugsmass R extending stop web 11, being in cross section locking circle portion an associated locking groove 7 between two Rotary driving wings 8 of the insertion end 9 of the tool 2 substantially fills.
  • Fig. 3 are in the tool holder 1, three spherical locking body. 6 circumferentially symmetrically distributed, in each case diametrically opposite a respective rotary driving groove 5 arranged.
  • the spherical locking body 6 fill in cross section with their locking circular sections depending on an associated locking groove 7 of the insertion 9th essentially off. Since the insertion end 9 with a Radialbezugsmass R corresponding outer diameter not further into the thus free rotary driving grooves. 5 penetrates, takes place in this variant, the rotational drive exclusively on the Locking grooves 7 of the insertion 9th

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Jigs For Machine Tools (AREA)
  • Drilling Tools (AREA)
EP04105837A 2003-11-26 2004-11-17 Porte-outil pour un outil rotatif à percussion Expired - Lifetime EP1535704B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10355376 2003-11-26
DE10355376 2003-11-26

Publications (2)

Publication Number Publication Date
EP1535704A1 true EP1535704A1 (fr) 2005-06-01
EP1535704B1 EP1535704B1 (fr) 2010-03-10

Family

ID=34442306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04105837A Expired - Lifetime EP1535704B1 (fr) 2003-11-26 2004-11-17 Porte-outil pour un outil rotatif à percussion

Country Status (6)

Country Link
US (1) US7258350B2 (fr)
EP (1) EP1535704B1 (fr)
JP (1) JP4758637B2 (fr)
CN (1) CN100418706C (fr)
AT (1) ATE460255T1 (fr)
DE (1) DE502004010872D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054685A1 (de) * 2004-11-12 2006-05-18 Hilti Ag Werkzeugaufnahme
DE102006000168A1 (de) * 2006-04-10 2008-01-03 Hilti Ag Werkzeugaufnahme
DE102007048822A1 (de) * 2007-10-10 2009-04-16 Robert Bosch Gmbh Elektrische Kombi-Handwerkzeugmaschine
WO2014103031A1 (fr) 2012-12-28 2014-07-03 大昭和精機株式会社 Structure de support d'outil
CN104149074B (zh) * 2013-05-13 2016-12-28 宝时得机械（张家港）有限公司 夹头
CN109604657B (zh) * 2019-01-11 2020-06-09 亚普汽车部件股份有限公司 中空体夹具
US11945087B2 (en) * 2019-03-29 2024-04-02 Tien-I Industrial Co., Ltd. Impact tool head
CN112443959B (zh) * 2019-08-29 2024-04-30 法雷奥汽车空调湖北有限公司 供暖通风空调（hvac）壳体

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8433275U1 (de) * 1984-11-14 1986-03-27 Hawera Probst Gmbh + Co, 7980 Ravensburg Bohrwerkzeug
DE3843465A1 (de) 1988-12-23 1990-06-28 Bosch Gmbh Robert Einrichtung zum spannen von werkzeugen
DE3941646A1 (de) 1989-12-16 1991-06-20 Heller Werkzeug Gmbh Geb Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge
EP0584706A2 (fr) * 1992-08-22 1994-03-02 Robert Bosch Gmbh Outil pour outils à main
DE19604283A1 (de) * 1996-02-07 1997-08-14 Bosch Gmbh Robert Einsatzsystem für Maschinen mit Bohr- und/oder Schlagbetrieb
US5785448A (en) * 1996-05-02 1998-07-28 Lemforder Nacam Device for coupling two shafts
US6261035B1 (en) * 1998-11-12 2001-07-17 Black & Decker Inc. Chuck, bit, assembly thereof and methods of mounting
US6390739B1 (en) * 1999-07-21 2002-05-21 Black & Decker Inc. Power drivable chuck
US6474656B1 (en) * 1999-07-21 2002-11-05 Black & Decker Inc. Power drivable chuck
DE10206164A1 (de) * 2002-02-15 2003-09-11 Weisenbach Ulrich Einspannschaft

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Publication number Priority date Publication date Assignee Title
DE206164C (fr)
US2468874A (en) * 1946-11-07 1949-05-03 Karl G R Hawkins Torsion driven tool
US3982846A (en) * 1973-12-05 1976-09-28 Steinbach Ralph L Tool device
DE2551125C2 (de) * 1975-11-14 1987-04-23 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung an Handwerkzeugmaschinen zur Drehmomentübertragung
DE2618596C2 (de) * 1976-04-28 1984-05-17 Robert Bosch Gmbh, 7000 Stuttgart Werkzeughalter
US4106573A (en) * 1976-09-13 1978-08-15 Joy Manufacturing Company Drill
DE3315661C2 (de) * 1983-03-25 1985-03-28 Günter Horst 7927 Sontheim Röhm Spannfutter für ein Werkzeug zum Schlagbohren
DE3331866A1 (de) * 1983-09-03 1985-03-21 Metabowerke GmbH & Co, 7440 Nürtingen Bohrhammer
DE3344552A1 (de) * 1983-12-09 1985-06-20 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur drehmomentuebertragung
DE3413432A1 (de) * 1983-12-27 1985-07-04 Gebrüder Heller GmbH Werkzeugfabrik, 2807 Achim Bohrer fuer handbohrmaschinen
DE3416964C2 (de) * 1984-05-08 1986-05-07 Günter Horst 7927 Sontheim Röhm Spannfutter für ein Werkzeug, insbes. zum Schlagbohren
DE3429419A1 (de) * 1984-08-09 1986-02-20 Hilti Ag, Schaan Bohrwerkzeug fuer handbohrmaschinen
DE3714679A1 (de) * 1985-11-11 1988-11-10 Hilti Ag Werkzeughalter
JP3372251B2 (ja) * 1990-10-16 2003-01-27 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付属の装置
DE4132023A1 (de) * 1991-09-26 1993-04-01 Bosch Gmbh Robert Einrichtung an handwerkzeugmaschinen
DE4137120A1 (de) * 1991-11-12 1993-05-13 Hilti Ag Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge
DE4200643A1 (de) * 1992-01-13 1993-07-15 Hilti Ag Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge
DE4223518A1 (de) * 1992-07-17 1994-01-20 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4313578A1 (de) * 1993-03-06 1994-09-08 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4341969A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4403303A1 (de) * 1994-02-03 1995-08-10 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE19516034A1 (de) * 1995-05-04 1996-11-07 Hilti Ag Einrichtung zur Drehmomentübertragung bei Handwerkzeuggeräten
DE19537561A1 (de) * 1995-10-09 1997-04-10 Hilti Ag Werkzeughalter
DE19537560A1 (de) * 1995-10-09 1997-04-10 Hilti Ag Werkzeughalter
CN1060713C (zh) * 1995-10-12 2001-01-17 罗伯特-博希股份公司 用于具有钻和/或冲击驱动装置的电动机器的插装式工具和工具夹
DE19821270A1 (de) * 1998-05-13 1999-11-18 Otto Bilz, Werkzeugfabrik Gmbh & Co Futter für drehantreibbare Werkzeuge, insbesondere Bohrer, Gewindebohrer o. dgl.
DE19952225A1 (de) * 1999-10-29 2001-05-03 Hilti Ag Bohr- und/oder Meisselwerkzeug
JP2002018613A (ja) * 2000-06-30 2002-01-22 Omi Kogyo Co Ltd カッター取付具、カッター及び切削ユニット具
DE10338640A1 (de) * 2003-08-22 2005-03-17 Hilti Ag Einsteckende für ein drehendes und schlagendes Werkzeug

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8433275U1 (de) * 1984-11-14 1986-03-27 Hawera Probst Gmbh + Co, 7980 Ravensburg Bohrwerkzeug
DE3843465A1 (de) 1988-12-23 1990-06-28 Bosch Gmbh Robert Einrichtung zum spannen von werkzeugen
DE3941646A1 (de) 1989-12-16 1991-06-20 Heller Werkzeug Gmbh Geb Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge
EP0584706A2 (fr) * 1992-08-22 1994-03-02 Robert Bosch Gmbh Outil pour outils à main
DE19604283A1 (de) * 1996-02-07 1997-08-14 Bosch Gmbh Robert Einsatzsystem für Maschinen mit Bohr- und/oder Schlagbetrieb
US5785448A (en) * 1996-05-02 1998-07-28 Lemforder Nacam Device for coupling two shafts
US6261035B1 (en) * 1998-11-12 2001-07-17 Black & Decker Inc. Chuck, bit, assembly thereof and methods of mounting
US6390739B1 (en) * 1999-07-21 2002-05-21 Black & Decker Inc. Power drivable chuck
US6474656B1 (en) * 1999-07-21 2002-11-05 Black & Decker Inc. Power drivable chuck
DE10206164A1 (de) * 2002-02-15 2003-09-11 Weisenbach Ulrich Einspannschaft

Also Published As

Publication number Publication date
ATE460255T1 (de) 2010-03-15
JP2005153139A (ja) 2005-06-16
US7258350B2 (en) 2007-08-21
JP4758637B2 (ja) 2011-08-31
US20050110225A1 (en) 2005-05-26
EP1535704B1 (fr) 2010-03-10
CN100418706C (zh) 2008-09-17
DE502004010872D1 (de) 2010-04-22
CN1644325A (zh) 2005-07-27

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