EP0195193B1 - Bohrfutter für drehschlagendes oder drehendes Bohren - Google Patents

Bohrfutter für drehschlagendes oder drehendes Bohren Download PDF

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Publication number
EP0195193B1
EP0195193B1 EP86100971A EP86100971A EP0195193B1 EP 0195193 B1 EP0195193 B1 EP 0195193B1 EP 86100971 A EP86100971 A EP 86100971A EP 86100971 A EP86100971 A EP 86100971A EP 0195193 B1 EP0195193 B1 EP 0195193B1
Authority
EP
European Patent Office
Prior art keywords
chuck
drilling
ring
coupling ring
axially
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
Application number
EP86100971A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0195193A1 (de
Inventor
Günter Horst Röhm
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0195193A1 publication Critical patent/EP0195193A1/de
Application granted granted Critical
Publication of EP0195193B1 publication Critical patent/EP0195193B1/de
Expired 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
    • 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
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y10T279/17623—Threaded sleeve and jaw
    • Y10T279/17632—Conical sleeve
    • 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 percussion drilling device with a drill chuck that can be driven by a drill spindle, in particular a drill chuck that has an axial passage through which the impact action of a striker axially guided in the hollow boron spindle on the end of the chuck jaws that can be adjusted centrally in the drill chuck by an adjusting ring held drill is transferable, with at least one coupling member being provided for the rotational connection of the drill chuck to the drill spindle, which engages positively in the coupling receptacles on the one hand the drill spindle and on the other hand the chuck body and enables the drill chuck on the drill spindle to be displaced axially by a locking device with a coupling ring can be switched off.
  • a percussion drilling device of this type in which the locking device is formed by a ring which is rotatably and axially immovably guided on the chuck body.
  • the ring is arranged axially next to an annular shoulder of the drilling spindle and carries stop projections which are directed against the annular shoulder and which, in the stop on the annular surface of the annular shoulder, switch off the axial displacement play of the chuck on the drilling spindle.
  • this locking device is provided in particular for impact drilling devices in which the axial displacement play has only a small stroke. If, on the other hand, the drill chuck is to have a large stroke, such as how the drill itself can, the overall length of the drill chuck in this locking device is extended approximately with its stroke length.
  • undesirable operating conditions can occur in the known percussion drilling device, namely that the percussion ring is not locked in percussion drilling operation when the displacement play is switched on, or is blocked for normal drilling operation when the displacement play is switched off, that is to say cannot be actuated for tensioning drills.
  • the invention has for its object to design and improve a percussion drilling device of the type mentioned in such a way that the drill chuck can carry out an axial displacement play with a large stroke without increasing its overall length and that, depending on the actuating position of the adjusting ring, either the clamping ring can be freely rotated if that axial displacement play is switched off or the clamping ring is blocked in its direction of rotation if the axial displacement play is switched on for percussion drilling.
  • the locking device has a radially adjustable locking member guided in the chuck body, which protrudes into an axially extending groove in the drill spindle and through an adjusting sleeve which surrounds the chuck body and is rotatable about the latter in an arranged in the groove Recess for locking the axial displacement play is conceivable, the adjusting sleeve having a radially outward recess enabling the locking member to emerge from the recess and being carried in the direction of rotation by the axially displaceable and lockable coupling ring, and that the coupling ring on its the adjusting ring facing edge is provided with teeth which engage in an associated counter toothing of the adjusting ring when the coupling ring is in the axial position on the drill.
  • the groove can also be designed as an annular groove, for example.
  • the groove is formed by a longitudinal groove, which is closed at the end in each case and is adapted to the length of the axial displacement, the recess being pocket-like at the end of the longitudinal groove facing away from the chuck jaws.
  • the coupling member effecting the rotational connection of the drill chuck to the drilling spindle.
  • the adjusting sleeve is firmly connected to a telescopic ring which surrounds it and is axially immovable relative to the chuck body and which is in non-rotatable engagement with the coupling ring.
  • the coupling ring in its displacement direction is under the force of a spring which is supported against the telescopic ring or the adjusting sleeve
  • the chuck body has at least one stop head for which one of two is in the wall of the coupling ring juxtaposed, different length axial grooves existing recess is provided, the grooves on the side facing the collar are open for the entry of the stop head and for which the coupling ring on the chuck body is rotatable so that either one or the other of the two grooves with the Stop head aligned axially.
  • the percussion drilling device shown in the drawing consists of a drilling spindle 1, only partially shown, which rotatably drives a drill chuck 2.
  • This drill chuck 2 has an axial passage 3, through which the impact of a striker 4 axially guided in the hollow drilling spindle and also only partially shown on the end of a chuck jaw 5 held in the chuck 2 between the jaws 5, which can be adjusted centrally by an adjusting ring 20, but in the drawing not shown drill is transferable.
  • coupling members 6 are provided which engage in a form-fitting manner in the rotational direction in coupling receptacles 8, 9 provided on the chuck body 7 and on the drilling spindle 1.
  • the locking device has a radially adjustable locking member 29 guided in the chuck body 7.
  • the locking member 29 projects into a groove 30 which extends axially in the drilling spindle 1 and in which a recess 32 is arranged.
  • the locking member 29 is conceivable by enclosing the chuck body 7 and about this rotatable adjusting sleeve 31 to lock the axial play in the recess 32.
  • the adjusting sleeve 31 has a recess 33, which allows the locking member 29 to emerge from the recess 32 and is directed radially outwards.
  • the adjusting sleeve 31 is carried in the direction of rotation by the axially displaceable and lockable coupling ring 12.
  • the groove 30 is formed by a longitudinal groove which is closed at each end, the length of which is adapted to the axial displacement play.
  • the recess 32 is pocket-like at the end of the longitudinal groove facing away from the chuck jaws 5.
  • the adjusting sleeve 31 is firmly connected to a telescopic ring 35 which surrounds it and is axially immovable relative to the chuck body 7 by means of a ring 34.
  • the telescopic ring is in rotationally fixed engagement with the coupling ring 12, as a result of which the coupling ring 12 remains axially freely adjustable, but takes the telescopic ring 35 with it when it is rotated.
  • the locking member 29, which is designed as a ball, is located in the recess 33 of the adjusting sleeve 31, ie it has emerged from the recess 32 in the groove 30.
  • the chuck body 7 can carry out an axial displacement play with respect to the drilling spindle 1, the locking member 29 moving in the longitudinal direction of the groove 30.
  • the coupling ring 12 is adjusted in its direction of rotation, the locking member 29 is adjusted radially inward into the recess 32 via the telescopic ring 35 and the adjusting sleeve 31 through the bevel 37 adjoining the recess 33, as a result of which the axial displacement play of the chuck body 7 is switched off.
  • the coupling ring 12 is provided on its edge facing the adjusting ring 20 with teeth 21 which engage in an associated counter-toothing 22 of the adjusting ring 20 when the coupling ring 12 is in the axial position on the drill.
  • the coupling ring 12 is in its direction of displacement under the force of a spring 23 which, in the embodiment according to FIGS.
  • the chuck body 7 has at least one stop head 24, for which a recess is provided in the wall of the coupling ring 12, which consists of two axial grooves 25.1, 25.2 of different lengths running next to one another.
  • the grooves 25.1, 25.1 are open on the side facing the adjusting ring 20 for the entry of the stop head 24.
  • the coupling ring 12 can be rotated on the chuck body 7 so that either one or the other of the two grooves 25.1, 25.2 is axially aligned with the stop head 24.
  • the stop head 24 itself is elongated in the longitudinal direction of the grooves 25.1, 25.2 in a web-like manner and forms stop surfaces for the groove side walls with its web longitudinal sides.
  • the stop head forms the end of a pin which is inserted radially into a bore in the chuck body 7 and anchors the stop head 24 on the chuck body 7.
  • the drill chuck 2 shows a largely customary structure.
  • the centrally adjustable clamping jaws 5 are guided in the chuck body 7, the adjusting ring 20, which is rotatable but axially immovable on the chuck body 7 and serves with its internal thread, engages in a toothing of the clamping jaws 5.
  • the adjusting ring 20 itself has a ring gear 26 for engaging the toothed pinion 27 of a clamping key 28 which can be attached to the chuck 2 for clamping or releasing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)
EP86100971A 1985-03-14 1986-01-24 Bohrfutter für drehschlagendes oder drehendes Bohren Expired EP0195193B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3509165A DE3509165C1 (de) 1985-03-14 1985-03-14 Bohrfutter
DE3509165 1985-03-14

Publications (2)

Publication Number Publication Date
EP0195193A1 EP0195193A1 (de) 1986-09-24
EP0195193B1 true EP0195193B1 (de) 1988-03-23

Family

ID=6265206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100971A Expired EP0195193B1 (de) 1985-03-14 1986-01-24 Bohrfutter für drehschlagendes oder drehendes Bohren

Country Status (5)

Country Link
US (1) US4703941A (ja)
EP (1) EP0195193B1 (ja)
JP (1) JPH0620648B2 (ja)
DE (1) DE3509165C1 (ja)
ES (1) ES292512Y (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636026A1 (de) * 1986-10-23 1988-04-28 Hilti Ag Handgeraet mit werkzeughalter
DE3828309C3 (de) * 1988-08-20 1998-07-30 Bosch Gmbh Robert Bohrhammer
DE4005757A1 (de) * 1990-02-23 1991-08-29 Bosch Gmbh Robert Handwerkzeugmaschine mit bohrfutter
US5908076A (en) * 1997-01-10 1999-06-01 Power Tool Holders Incorporated Impact tool driver
US5992538A (en) * 1997-08-08 1999-11-30 Power Tool Holders Incorporated Impact tool driver
US6073939A (en) 1998-06-05 2000-06-13 Power Tool Holders Incorporated Locking chuck
US6196554B1 (en) 1998-12-15 2001-03-06 Power Tool Holders Incorporated Locking chuck
US7455303B2 (en) * 2005-09-02 2008-11-25 The Jacobs Chuck Manufacturing Company Chuck with internal nut
CA2555533A1 (en) * 2006-08-08 2008-02-08 Fern Beauchamp Hammer drill bit chuck attachment
US8075229B2 (en) 2007-06-26 2011-12-13 Techtronic Power Tools Technology Limited Multi-speed drill and chuck assembly
US8057134B2 (en) 2007-06-26 2011-11-15 Techtronic Power Tools Technology Limited Chuck assembly
US20090200758A1 (en) * 2008-02-07 2009-08-13 Chin Hung Lam Auto Locking Chuck
US8777232B2 (en) 2009-07-29 2014-07-15 Jacobs Chuck Manufacturing Company Self-tightening chuck with a radial lock
US10556276B2 (en) 2013-03-14 2020-02-11 Apex Brands, Inc. Locking chuck

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413581A1 (de) * 1984-04-11 1985-10-24 Günter Horst 7927 Sontheim Röhm Schlagbohreinrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684856A (en) * 1950-03-18 1954-07-27 Jacobs Mfg Co Apparatus for tightening chucks of power drills
US3985368A (en) * 1974-11-25 1976-10-12 The Bendix Corporation Quick-change spindle nose adapter
DE2618596C2 (de) * 1976-04-28 1984-05-17 Robert Bosch Gmbh, 7000 Stuttgart Werkzeughalter
DE2826153A1 (de) * 1978-06-15 1979-12-20 Licentia Gmbh Kombinierte schnellwechselfutter- und werkzeugeinheit fuer bohrhaemmer
DE3205063C2 (de) * 1981-04-03 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart Werkzeughalter
DE3125454A1 (de) * 1981-06-29 1983-01-20 Hilti AG, 9494 Schaan Bohrhammer fuer bohr- und schlagbohrbetrieb
AT377459B (de) * 1981-06-29 1985-03-25 Siderurgie Fse Inst Rech Verfahren zum koninuierlichen vergiessen von in einer kokille rotierendem schmelzfluessigem metall und vorrichtung zur durchfuehrung des verfahrens
AT371566B (de) * 1981-06-29 1983-07-11 Albert Berner Handelsgesellsch Bohrstange bzw. bohrer fuer bohrhaemmer
DE3421811C2 (de) * 1984-06-12 1995-11-16 Hilti Ag Werkzeughalter für Bohr- und Meisselgeräte

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413581A1 (de) * 1984-04-11 1985-10-24 Günter Horst 7927 Sontheim Röhm Schlagbohreinrichtung

Also Published As

Publication number Publication date
JPH0620648B2 (ja) 1994-03-23
ES292512Y (es) 1987-02-16
DE3509165C1 (de) 1986-07-31
ES292512U (es) 1986-06-01
US4703941A (en) 1987-11-03
JPS61219505A (ja) 1986-09-29
EP0195193A1 (de) 1986-09-24

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