EP0195193A1 - Mandrin pour forage rotatif ou rotatif avec percussion - Google Patents

Mandrin pour forage rotatif ou rotatif avec percussion Download PDF

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Publication number
EP0195193A1
EP0195193A1 EP86100971A EP86100971A EP0195193A1 EP 0195193 A1 EP0195193 A1 EP 0195193A1 EP 86100971 A EP86100971 A EP 86100971A EP 86100971 A EP86100971 A EP 86100971A EP 0195193 A1 EP0195193 A1 EP 0195193A1
Authority
EP
European Patent Office
Prior art keywords
chuck
ring
drill
coupling
spindle
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
EP86100971A
Other languages
German (de)
English (en)
Other versions
EP0195193B1 (fr
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/fr
Application granted granted Critical
Publication of EP0195193B1 publication Critical patent/EP0195193B1/fr
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.
  • the Ver Locking device is formed by a ring 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.
  • 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 drilling spindle and through an adjusting sleeve surrounding the chuck body and rotatable about this in an arranged in the groove Recess to block the axial displacement play is conceivable, the adjusting sleeve radially outward allowing the locking member to emerge from the recess Tete recess and is taken in the direction of rotation of the axially displaceable and lockable coupling ring, and that the coupling ring is provided on its edge facing the collar with teeth which engage in an axially drill-side position of the coupling ring in an associated counter teeth of the collar.
  • 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 rotationally fixed engagement with the coupling ring.
  • the coupling ring in its direction of displacement 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 has, for which in the wall of the coupling ring a recess consisting of two adjacent, differently long axial grooves is provided, the grooves on the side facing the adjusting ring being open for the entry of the stop head and for which the coupling ring can be rotated on the chuck body, that either one or the other of the two grooves is axially aligned with the stop head.
  • the percussion drilling device shown in the drawing consists of a drilling spindle 1 which is only partially shown and which is rotationally locked Drill chuck 2 drives.
  • 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 drill chuck 2 between the jaws 5, which are centrally adjustable by an adjusting ring 20, in the drawing but 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 protrudes 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 means of an adjusting sleeve 31 which surrounds the chuck body 7 and can be rotated about it, in order 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 axially in the direction of rotation slidable and lockable against rotation coupling ring 12 taken.
  • 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.
  • a locking connection between the chuck 2 and the drill spindle 1 is also provided via the locking member 29, so that the coupling member 6 itself can also be omitted connected immovable telescopic ring 35.
  • the telescopic ring is in rotationally fixed engagement with the coupling ring 12, as a result of which the coupling ring 12 remains freely adjustable axially, 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, that is to say it has emerged from the depression 32 in the groove 30.
  • the chuck body 7 can execute 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 clutch ring 12 in Adjusted its direction of rotation, the locking member 29 is adjusted via the telescopic ring 35 and the adjusting sleeve 31 through the bevel 37 adjacent to the recess 33 radially inwards into the recess 32, whereby 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 in the wall of the coupling ring 12 a recess consisting of two juxtaposed, differently long axial grooves 25.1, 25.2 is provided.
  • 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 extended 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 Mandrin pour forage rotatif ou rotatif avec percussion Expired EP0195193B1 (fr)

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 true EP0195193A1 (fr) 1986-09-24
EP0195193B1 EP0195193B1 (fr) 1988-03-23

Family

ID=6265206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100971A Expired EP0195193B1 (fr) 1985-03-14 1986-01-24 Mandrin pour forage rotatif ou rotatif avec percussion

Country Status (5)

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

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 (fr) * 2006-08-08 2008-02-08 Fern Beauchamp Accessoire de mandrin de trepan de marteau perforateur
US8057134B2 (en) 2007-06-26 2011-11-15 Techtronic Power Tools Technology Limited Chuck assembly
US8075229B2 (en) 2007-06-26 2011-12-13 Techtronic Power Tools Technology Limited Multi-speed drill and 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096045A (en) * 1981-04-03 1982-10-13 Bosch Gmbh Robert A tool holder
GB2100653A (en) * 1981-06-29 1983-01-06 Hilti Ag Hammer drill
AT371566B (de) * 1981-06-29 1983-07-11 Albert Berner Handelsgesellsch Bohrstange bzw. bohrer fuer bohrhaemmer
DE3421811A1 (de) * 1984-06-12 1985-12-12 Hilti Ag, Schaan Werkzeughalter fuer bohr- und meisselgeraete

Family Cites Families (6)

* 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
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
DE3413581C2 (de) * 1984-04-11 1986-08-14 Günter Horst 7927 Sontheim Röhm Bohrfutter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096045A (en) * 1981-04-03 1982-10-13 Bosch Gmbh Robert A tool holder
GB2100653A (en) * 1981-06-29 1983-01-06 Hilti Ag Hammer drill
AT371566B (de) * 1981-06-29 1983-07-11 Albert Berner Handelsgesellsch Bohrstange bzw. bohrer fuer bohrhaemmer
DE3421811A1 (de) * 1984-06-12 1985-12-12 Hilti Ag, Schaan Werkzeughalter fuer bohr- und meisselgeraete

Also Published As

Publication number Publication date
EP0195193B1 (fr) 1988-03-23
JPS61219505A (ja) 1986-09-29
ES292512Y (es) 1987-02-16
DE3509165C1 (de) 1986-07-31
ES292512U (es) 1986-06-01
US4703941A (en) 1987-11-03
JPH0620648B2 (ja) 1994-03-23

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