EP0432169B1 - Einrichtung an handwerkzeugmaschinen zur drehmomentübertragung - Google Patents

Einrichtung an handwerkzeugmaschinen zur drehmomentübertragung Download PDF

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Publication number
EP0432169B1
EP0432169B1 EP89908381A EP89908381A EP0432169B1 EP 0432169 B1 EP0432169 B1 EP 0432169B1 EP 89908381 A EP89908381 A EP 89908381A EP 89908381 A EP89908381 A EP 89908381A EP 0432169 B1 EP0432169 B1 EP 0432169B1
Authority
EP
European Patent Office
Prior art keywords
rotary drive
drive slots
plane
longitudinal plane
disposed
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
EP89908381A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0432169A1 (de
Inventor
Josef Obermeier
Gerhard Rumpp
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to AT89908381T priority Critical patent/ATE96073T1/de
Publication of EP0432169A1 publication Critical patent/EP0432169A1/de
Application granted granted Critical
Publication of EP0432169B1 publication Critical patent/EP0432169B1/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
    • 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
    • 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
    • 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
    • B25D2217/0049—Roll-shaped locking members
    • 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
    • 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

  • Device on hand-held power tools for torque transmission to impact drilling tools with two axially closed on both sides, diametrically opposite recesses, which interact with locking bodies, at least three open-ended rotary driving grooves for strip-shaped rotary drivers on both sides of a longitudinal plane running through the two recesses, which open out at the rear end of the tool shaft. which are arranged distributed over the circumference in such a way that in no case are two rotary driving grooves diametrically opposite one another.
  • a device of the type in question is known from DE-P 37 16 915.7.
  • the tool provided for this device has on both sides of its shaft closed, diametrically opposed recesses, both sides of which are provided with rotary driving grooves that open out towards the rear end of the tool shaft on a longitudinal plane running through these recesses.
  • the rotary driving grooves are arranged asymmetrically in such a way that no two are diametrically opposed to one another.
  • a device for torque transmission is known from FR-A 23 31 410, which, however, has diametrically opposed rotary driving or locking grooves of similar dimensions.
  • the invention is based on the object of designing a device on hand-held power tools for torque transmission in such a way that its parts can be produced economically, in particular by means of non-cutting forming processes.
  • this object is achieved in that the sum of the cross sections of the rotary driving grooves arranged on one side of the longitudinal plane essentially corresponds to the sum of the rotating driving grooves arranged on the other side of the longitudinal plane, and on each side of the longitudinal plane the rotating driving grooves are symmetrical to a perpendicular to the longitudinal plane Plane of symmetry are arranged and formed.
  • the forces to be applied in a non-cutting forming process are uniformly distributed. Due to the symmetry with respect to the plane of symmetry running perpendicular to the longitudinal plane, the force components in particular cancel each other out in the direction running parallel to the longitudinal plane. Due to the material cross-sections achieved by adapting the cross-sections and alignment with respect to the plane of symmetry, the force components cancel each other out perpendicular to each plane running through the longitudinal axis.
  • the number of rotary driving grooves on one side of the longitudinal plane is preferably greater than the number of rotary driving grooves on the other side, which has the advantage that the arrangement of the rotary driving grooves on both sides of the longitudinal plane differs sufficiently from one another, above all visually. This makes it easier for the operator of a hand-held power tool equipped in this way to insert tools.
  • all the rotary driving grooves are expediently of the same length.
  • a length adjustment with regard to the recesses is irrelevant, provided that these are also of equal length to one another.
  • a proven embodiment can be achieved in that the rotary driving grooves project slightly beyond the length of the rear end of the recesses.
  • the central web through which the symmetry plane passes through between two adjacent rotary driving grooves has an angle between 0 ° and 15 °. This avoids an undercut that would have an adverse effect both in terms of strength and from the point of view of the forming. In terms of strength, in particular, it is advantageous if the angle is greater than 0 °, so that sufficiently high torques can be transmitted to the central web formed by the residual profile.
  • the tool for the device according to the invention on hand tools for torque transmission is preferably designed such that the tool shaft has two axially closed, diametrically opposite recesses and with at least three open ends at the rear end of the tool shaft on both sides of a longitudinal plane running through the two recesses arranged rotary driving grooves are provided, which are distributed over the circumference such that in no case two rotating driving grooves are diametrically opposite one another and the sum of the cross sections of the rotating driving grooves arranged on one side of the longitudinal plane essentially corresponds to the sum of the rotating driving grooves arranged on the other side of the longitudinal plane and on each side
  • the longitudinal driving grooves are arranged and formed symmetrically to a plane of symmetry running perpendicularly through the longitudinal plane.
  • the tool holder shown in FIGS. 1 and 2 is arranged on a drilling device, for example on a hammer drill, with a housing 1.
  • a guide tube 2 is in the housing via a bearing 3 1 rotatably mounted.
  • a sealing ring 4 sliding on the guide tube 2 prevents dirt from penetrating into the bearing 3 on the one hand and lubricant from the housing 1 on the other hand.
  • a striker 5 is axially displaceably mounted in the guide tube 2.
  • a tool shaft 6 of a drilling tool is inserted into the free end 2a of the guide tube 2.
  • the tool shank 6 has two diametrically opposite recesses 6a which are axially closed on both sides, and rotational driving grooves 6c, 6d which are arranged offset with respect to these and open towards the rear end 6b. There is a central web 6e between the two rotary driving grooves 6d.
  • the guide tube 2 is provided with through openings 2b, into which roller-shaped locking elements 7 are inserted.
  • the guide tube 2 also has rotary drivers 2c, 2d which engage in the rotary driving grooves 6c, 6d and serve to transmit the torque from the guide tube 2 to the tool shank 6.
  • an adjusting sleeve 8 can be displaced axially to a limited extent against the force of a compression spring 9 guided in an extension 1a of the housing 1.
  • the adjusting sleeve 8 has a circumferential escape niche 8a for the locking body 7.
  • the escape niche 8a reaches the area of the passage openings 2b and the locking bodies 7 can move radially into the escape niche 8a, whereupon the tool shaft 6 can be pulled out of the guide tube 2.
  • the adjusting sleeve 8 is secured in the feed direction by means of a locking ring 10.
  • FIGS. 3 and 4 show a tool shank 16 which is somewhat enlarged compared to FIGS. 1 and 2, with axially closed recesses 16a and rotational driving grooves 16c, 16d which are open towards the rear end 16b.
  • the two recesses 16a lie diametrically opposite one another.
  • the recesses 16a are thus arranged symmetrically with respect to the plane of symmetry Y running through the longitudinal axis.
  • the central web 16e remaining between the two rotary driving grooves 16d has an angle A between 0 ° and 15 ° with respect to the plane of symmetry Y.
  • the tool shank 26 shown in FIGS. 5 and 6 differs from the embodiment shown in FIGS. 3 and 4 mainly by the number of rotary driving grooves 26c, 26d.
  • the bores 26a and the rotary driving grooves 26c, 26d are arranged and formed symmetrically with respect to the plane of symmetry Y.
  • This embodiment differs from the embodiment in FIGS. 3 and 4 in that the central webs 26e, 26f remaining between the rotary driving grooves 26c, 26d have flanks which are parallel to one another and have an angle with respect to the plane of symmetry Y of 0 °.
  • FIG. 7 and 8 show a fourth embodiment of a tool shank 36.
  • This tool shank 36 has two diametrically opposite recesses 36a.
  • the total number of rotary driving grooves 36c, 36d open towards the rear end 36b is five.
  • the sum of the cross sections of the rotary driving grooves 36c, 36d, 36f is the same on both sides of the longitudinal plane X.
  • the angle B of the central web 36e remaining between the rotary driving grooves 36c with respect to the plane of symmetry Y is, for example, approximately 5 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
  • Drilling And Boring (AREA)
EP89908381A 1988-07-22 1989-07-19 Einrichtung an handwerkzeugmaschinen zur drehmomentübertragung Expired - Lifetime EP0432169B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89908381T ATE96073T1 (de) 1988-07-22 1989-07-19 Einrichtung an handwerkzeugmaschinen zur drehmomentuebertragung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3824894A DE3824894A1 (de) 1988-07-22 1988-07-22 Einrichtung an handwerkzeugmaschinen zur drehmomentuebertragung
DE3824894 1988-07-22

Publications (2)

Publication Number Publication Date
EP0432169A1 EP0432169A1 (de) 1991-06-19
EP0432169B1 true EP0432169B1 (de) 1993-10-20

Family

ID=6359294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908381A Expired - Lifetime EP0432169B1 (de) 1988-07-22 1989-07-19 Einrichtung an handwerkzeugmaschinen zur drehmomentübertragung

Country Status (8)

Country Link
US (1) US5076371A (ko)
EP (1) EP0432169B1 (ko)
JP (1) JP2736144B2 (ko)
KR (1) KR0148797B1 (ko)
CN (1) CN1015786B (ko)
DE (2) DE3824894A1 (ko)
DK (1) DK171211B1 (ko)
WO (1) WO1990000957A1 (ko)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3941646A1 (de) * 1989-12-16 1991-06-20 Heller Werkzeug Gmbh Geb Werkzeug zum schlagbohren und werkzeugaufnahme fuer schlagbohrende werkzeuge
DE4105414A1 (de) * 1991-02-21 1992-08-27 Hilti Ag Werkzeug und werkzeughalter fuer handwerkzeuggeraete
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
DE4141846A1 (de) * 1991-12-18 1993-06-24 Hilti Ag Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge
DE4200643A1 (de) * 1992-01-13 1993-07-15 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
DE4313580A1 (de) * 1993-04-26 1994-10-27 Hilti Ag Werkzeugeinspannschaft
DE4341970A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4341971A1 (de) * 1993-12-09 1995-06-14 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
BR9408483A (pt) * 1994-01-14 1997-08-26 Bosch Gmbh Robert Dispositívo em máquinas-ferramenta para o arrasto giratório de ferramentas
DE4402802C2 (de) * 1994-01-31 2003-01-30 Hilti Ag Werkzeug und Werkzeugaufnahme für Handwerkzeuggeräte
DE4405697A1 (de) * 1994-02-18 1995-08-24 Black & Decker Inc Werkzeugaufnahme für einen Bohr- und/oder Meißelhammer
DE19537561A1 (de) * 1995-10-09 1997-04-10 Hilti Ag Werkzeughalter
RU2189305C2 (ru) * 1995-10-12 2002-09-20 Роберт Бош Гмбх Вставной инструмент и приспособление для его крепления в электрических машинах с режимом сверления и/или перфорации
DE10001193B4 (de) * 2000-01-14 2005-10-20 Bosch Gmbh Robert Handwerkzeugmaschine mit einer Werkzeughalterung zur Festlegung des Werkzeugs in Drehrichtung
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
CN1329164C (zh) * 2001-09-17 2007-08-01 密尔沃基电动工具公司 旋转锤
US6834864B2 (en) 2001-10-24 2004-12-28 Power Tool Holders Incorporated Chuck having quick change mechanism
GB2393931A (en) * 2002-10-10 2004-04-14 Black & Decker Inc Tool for a rotary hammer
DE10357380A1 (de) * 2003-12-05 2005-06-30 Hilti Ag Einsteckende für ein drehendes und/oder schlagendes Werkzeug
DE102004026850A1 (de) * 2004-06-02 2005-12-29 Hilti Ag Einsteckende für ein drehendes und/oder schlagendes Werkzeug
US20050285355A1 (en) * 2004-06-24 2005-12-29 Yuan-Ho Lin Quick removable chuck assembly and its cutting tool
DE102004054685A1 (de) * 2004-11-12 2006-05-18 Hilti Ag Werkzeugaufnahme
DE102006036955A1 (de) * 2006-08-08 2008-02-14 Robert Bosch Gmbh Werkzeugaufnahme
DE102007036312A1 (de) 2007-07-31 2009-02-05 Robert Bosch Gmbh Schnellwechsel-Werkzeugfuttermodul für eine Handwerkzeugmaschine, insbesondere einen Bohrhammer
EP2537611A4 (en) * 2010-02-15 2014-07-09 Miyanaga Kk ROTATION TOOL INSTALLATION AND REMOVAL DEVICE AND ROTATION TOOL
DE102010002167A1 (de) * 2010-02-22 2011-08-25 Hilti Aktiengesellschaft Herstellungsverfahren für ein Einsteckende
CN102744731B (zh) * 2012-07-19 2014-07-02 北京理工大学 一体化旋转关节
CA2886319A1 (en) * 2012-09-26 2014-04-03 Access Products Group LLC Quick release connector
EP3925735A1 (de) * 2020-06-17 2021-12-22 Hilti Aktiengesellschaft Werkzeug und system
CN219293883U (zh) 2020-07-02 2023-07-04 米沃奇电动工具公司 具有刀头固持装置的旋转冲击工具
US20220219306A1 (en) * 2021-01-14 2022-07-14 Milwaukee Electric Tool Corporation Tool bit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2405938C3 (de) * 1974-02-08 1980-07-10 Impex-Essen Vertrieb Von Werkzeugen Gmbh, 8800 Ansbach Werkzeughalterung für Handschlaggeräte, insbesondere Elektro-Bohrhämmer
NL175040C (nl) * 1974-08-19 1984-09-17 Durofac Kartro As Booropneeminrichting voor een klopboormachine.
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
DE3205063C2 (de) * 1981-04-03 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart Werkzeughalter
DK333581A (da) * 1981-07-24 1983-01-25 Duforac Kartro A S Vaerktoejsskaft isaer til slag eller hammerbor
DE3745046C2 (de) * 1987-05-20 1996-07-25 Bosch Gmbh Robert Werkzeugaufnahme einer Handwerkzeugmaschine mit verdrehsicher einsetzbarem Werkzeug

Also Published As

Publication number Publication date
JP2736144B2 (ja) 1998-04-02
WO1990000957A1 (de) 1990-02-08
DK73390D0 (da) 1990-03-21
DK171211B1 (da) 1996-07-29
DE3824894A1 (de) 1990-01-25
JPH03505996A (ja) 1991-12-26
CN1040847A (zh) 1990-03-28
DK73390A (da) 1990-03-31
KR900701478A (ko) 1990-12-03
US5076371A (en) 1991-12-31
KR0148797B1 (ko) 1998-10-15
EP0432169A1 (de) 1991-06-19
DE58905983D1 (de) 1993-11-25
CN1015786B (zh) 1992-03-11

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