EP0194426B1 - Mandrin pour forage rotatif ou à percussion rotative - Google Patents

Mandrin pour forage rotatif ou à percussion rotative Download PDF

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Publication number
EP0194426B1
EP0194426B1 EP86100969A EP86100969A EP0194426B1 EP 0194426 B1 EP0194426 B1 EP 0194426B1 EP 86100969 A EP86100969 A EP 86100969A EP 86100969 A EP86100969 A EP 86100969A EP 0194426 B1 EP0194426 B1 EP 0194426B1
Authority
EP
European Patent Office
Prior art keywords
drilling
chuck
coupling ring
ring
recess
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
EP86100969A
Other languages
German (de)
English (en)
Other versions
EP0194426A1 (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
Priority claimed from DE3509165A external-priority patent/DE3509165C1/de
Priority claimed from DE19853515259 external-priority patent/DE3515259C1/de
Application filed by Individual filed Critical Individual
Publication of EP0194426A1 publication Critical patent/EP0194426A1/fr
Application granted granted Critical
Publication of EP0194426B1 publication Critical patent/EP0194426B1/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
    • Y10T279/17042—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
    • Y10T279/17615—Obliquely guided reciprocating jaws
    • Y10T279/17623—Threaded sleeve and jaw
    • Y10T279/17632—Conical sleeve

Definitions

  • the invention relates to a percussion drilling device with a drill chuck which can be driven by a drill spindle, in particular a drill chuck which has an axial passage through which the impact effect of a striker axially guided in the hollow drill spindle on the end of the chuck jaws which can be adjusted centrally in the drill chuck by means of 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 drills of this type in which the locking device is formed by a rotatable and axially non-displaceably guided on the chuck body ring.
  • 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 the drill itself, the 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 at least one locking member axially fixed with respect to the drilling spindle, which can be actuated by the axially displaceable and lockable coupling ring and in the radial direction of the chuck axis in each case in a recess provided circumferentially on the chuck body with locking of the axial displacement play of the chuck body is adjustable, and that the coupling ring is provided on its edge facing the adjusting ring 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 side.
  • the coupling ring If the coupling ring is in the position enabling the axial displacement play, the locking member is out of engagement with the recess in the chuck body. Since the coupling receptacles have an axially greater length than the coupling member, they allow the axial displacement play of the drill chuck on the drill spindle and, moreover, only ensure the rotational connection of the connection between the drill chuck and the drill spindle. If, on the other hand, the coupling ring is brought into its position that eliminates the axial displacement play, the locking member is adjusted in the radial direction into the recess of the chuck body, whereby its axial displaceability is blocked.
  • the progress achieved by the invention consists essentially in the fact that the size of the displacement play has no influence on the overall length of the drill chuck. Furthermore, both the structure and the handling of the drill chuck are considerably simplified, since only one coupling ring is required, which switches the axial displacement play on or off as required and at the same time effects the locking of the adjusting ring when the displacement play is switched on.
  • a preferred embodiment of the invention is characterized in that the coupling ring is provided on its inner circumferential surface with a run-up slope for the locking member which extends in a ring around the chuck axis, extends in the axial direction and forms a conical surface, the clear inner cross section of the coupling ring being on its drilling spindle side Enlarged edge.
  • the recess in the chuck body is from an annular groove is formed.
  • the locking member is expediently arranged in a radially extending recess in a sleeve fastened to the drilling spindle, which is supported on the one hand on the end face on an annular shoulder of the drilling spindle, on the other hand with an annular shoulder provided on its inner peripheral surface on a radially outwardly directed annular collar of the chuck body and in any case in the Area of the recess is encompassed by the coupling ring.
  • the sleeve can be screwed onto an external thread of the drilling spindle in the usual way and, if necessary, secured against loosening by a securing piece.
  • a spring ring can be arranged on the inner circumferential surface of the sleeve, which protrudes radially into the annular groove forming the recess and forms a stop limiting the axial displacement play for the two side surfaces of the annular groove which is adapted in width to the displacement play. Then such an arrangement is further recommended that, when the displacement play is switched off, the spring washer of the drill side surface of the annular groove and the locking member of the drill spindle side surface rests at least in the region of its radially outer edge.
  • the ring groove thus enables both the axial limitation and the switching off of the play.
  • the locking member is formed by a ball and the recess in the sleeve receiving the locking member is formed by a radial, cylindrical bore.
  • the locking of the axial displacement play presupposes that the drilling machine driving the percussion drilling spindle is switched over in such a way that the percussion drilling spindle can no longer transmit any impact effects. If this switching of the drive machine is forgotten, however, this would have the consequence that the impact effect would be fully transferred to the drill chuck, which could not yield to these impact effects due to the locking of its axial displacement play. As a result, such a malfunction would result in the risk of damage to the drill chuck.
  • the system holding the locking member in the recess on the coupling ring is formed by an abutment which is on the side of the run-up slope in the wall facing away from the drilling spindle the coupling ring is arranged radially back until the locking member emerges from the recess and is under a spring force which presses the abutment radially inwards.
  • a preferred embodiment is characterized in that the abutment is formed by a radially elastically yielding spring ring, which extends along the circumference of the coupling ring and is inserted into an annular groove which is sufficiently deep for the radial elastic adjustment play of the spring ring and which is in the inner lateral surface of the coupling ring is provided.
  • the coupling ring expediently carries on the drill spindle side of the ring groove a casing sleeve which forms the side wall of the ring groove and the run-on slope, which can be made of a harder and more wear-resistant material than the coupling ring.
  • An advantageous development of the invention is characterized in that the coupling ring in its direction of displacement is under the force of a spring which is supported against the chuck body, and in that the chuck body has at least one stop head for which one of two juxtaposed, different lengths runs in the wall of the coupling ring 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 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 rotatably drives a 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 can be transmitted to the end of a drill chuck 5 held in the chuck 2 between chuck jaws 5 that are centrally adjustable by an adjusting ring 20, but not shown in the drawing .
  • Coupling members 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 chuck body 7 has recesses 11 on the circumference, into which an axially immovable locking member 10 can be adjusted in the radial direction of the chuck axis with respect to the drilling spindle 1.
  • the coupling ring 12 is provided, which is axially displaceable and lockable against rotation and is provided on its inner circumferential surface with a run-up bevel 13 for the locking member 10 which extends annularly around the chuck axis and extends in the axial direction and forms a conical surface.
  • the run-up slope 13 extends in such a way that the clear internal cross section of the coupling ring 12 increases towards its edge on the drilling spindle side.
  • a displacement of the coupling ring 12 towards the drill thus causes the displacement play to be switched on, while by adjusting the coupling ring 12 in the opposite direction, the locking member 10 is pushed through the bevel 13 into the recess 11 on the chuck body 7 and thus blocks its axial movement.
  • the recess 11 in the chuck body is formed by an annular groove.
  • the locking member 10 is arranged in a radially extending recess 14 in a sleeve 15 fastened on the drilling spindle 1.
  • the sleeve 15 is supported on the one hand on the end face on an annular shoulder 16 of the drilling spindle 1, and on the other hand with an annular shoulder 17 provided on its inner peripheral surface on a radially outwardly directed annular collar 18 of the chuck body 7. Furthermore, the sleeve 15 is encompassed by the coupling ring 12 in the region of the recess 14.
  • a spring ring 19 is arranged, which projects radially into the recess 11 formed by the annular groove and forms a stop limiting the axial displacement play for the two side surfaces 11.1 and 11.2 of the annular groove which is adapted in width to the displacement play.
  • the spring ring 19 rests against the side surface 11.2 of the ring groove on the drill side and the locking member 10 faces the side surface 11.1 on the drill spindle side, at least in the region of its radially outer edge.
  • the locking member 10 is formed by a ball and the recess 14 receiving the locking member 10 in the sleeve 15 is formed by a radial cylindrical bore.
  • the abutment 10 holding the locking member 10 in the recess 11 on the coupling ring 12 is formed by an abutment 40 which, on the side of the bevel 13 facing away from the drilling spindle 1, radially returns in the wall of the coupling ring 12 is adjustable until the locking member 10 emerges from the recess 11.
  • the abutment 40 is under a spring force that presses it radially inward.
  • the abutment 40 is formed by a radially elastically yielding spring ring which extends along the circumference of the coupling ring 12 and lies in an annular groove 41 which is sufficiently deep for the radially elastic adjustment play of the spring ring and which is provided in the inner circumferential surface of the coupling ring 12 .
  • the coupling ring then carries a steel casing sleeve on the inside and on the drill spindle side, which forms the side wall of the annular groove 41 on the drill spindle side and the conical bevel 13.
  • 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, 25.2 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 serves to adjust them. which engages in a toothing of the clamping jaws 5 with its internal thread.
  • 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)

Claims (11)

1. Dispositif de perçage à percussion équipé d'un mandrin de serrage (2) pouvant être entraîné par une broche de perçage (1), en particulier un mandrin de serrage (2) présentant un passage axial (3) par lequel le mouvement de percussion d'un percuteur (4) guidé axialement dans la broche de perçage creuse (1) peut être transmis à l'extrémité du foret lequel est maintenu dans le mandrin de serrage (2), entre des mâchoires de serrage (5) pouvant être déplacées concentriquement à l'aide d'une bague de réglage (20), caractérisé par le fait que, pour la liaison en rotation entre le mandrin de serrage (2) et la broche de perçage (1), il comprend au moins un organe d'accouplement (6) qui s'engage positivement dans des logements (8, 9) prévus sur la broche de perçage (1), d'une part, et sur le corps de mandrin (7), d'autre part, et qui autorise un jeu de déplacement axial du mandrin de serrage (2) sur la broche de perçage (1) lequel peut être supprimé par un dispositif de verrouillage avec une bague d'accouplement, le dispositif de verrouillage comprenant au moins un organe d'arrêt (10) axialement fixe par rapport à la broche de perçage (1) qui peut être actionné par la bague d'accouplement (12), mobile dans le sens axial et pouvant être bloquée en rotation, et qui peut être amené respectivement, dans la direction radiale par rapport à l'axe du mandrin, dans un évidement (11) prévu sur la périphérie du corps de mandrin (7), avec blocage du jeu de déplacement axial du corps de mandrin (7), et que la bague d'accouplement (12) comporte sur son bord dirigé vers la bague de réglage (20) des dents (21) qui s'engrènent dans une denture conjuguée (22) associée de la bague de réglage (20) lorsque la bague d'accouplement (12) se trouve dans la position axiale du côté du foret.
2. Dispositif de perçage à percussion selon la revendication 1, caractérisé par le fait que la bague d'accouplement (12) est munie, sur sa surface latérale intérieure, d'un chanfrein d'attaque (13) pour l'organe d'arrêt (10) qui s'étend en anneau autour de l'axe du mandrin et dans le sens axial et qui forme une surface conique, la section intérieure libre de la bague d'accouplement (12) s'agrandissant en direction de son bord du côté de la broche de perçage.
3. Dispositif de perçage à percussion selon l'une des revendications 1 ou 2, caractérisé par le fait que l'évidement (11) dans le corps de mandrin (7) est constitué par une rainure annulaire.
4. Dispositif de perçage à percussion selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que l'organe d'arrêt (10) est disposé dans un évidement (14) s'étendant radialement dans une douille (15) fixée sur la broche de perçage (1), ladite douille s'appuyant, d'une part, du côté frontal sur un épaulement annulaire (16) de la broche de perçage (1) et, d'autre part, avec un épaulement annulaire (17) prévu sur sa surface circonférentielle intérieure, sur un collet annulaire (18) du corps de mandrin (7) orienté radialement vers l'extérieur, et étant entourée, en tout cas dans la région de l'évidement (14), par la bague d'accouplement (12).
5. Dispositif de perçage à percussion selon l'une des revendications 3 et 4, caractérisé par le fait que sur la surface circonférentielle intérieure de la douille (15) est disposée une rondelle élastique (19) qui dépasse radialement dans la rainure annulaire formant les évidements (11) et qui constitue une butée limitant le jeu de déplacement axial pour les deux faces latérales (11.1, 11.2) de la rainure annulaire dont la largeur est adaptée au jeu de déplacement.
6. Dispositif de perçage à percussion selon la revendication 5, caractérisé par le fait que, dans la position de blocage du jeu de déplacement, la rondelle élastique (19) est appliquée, du côté foret, contre la surface latérale (11.2) de la rainure annulaire et que l'organe d'arrêt (10) est en contact avec la surface latérale (11.1) du côté de la broche de perçage, du moins dans la région de son bord radialement extérieur.
7. Dispositif de perçage à percussion selon l'une quelconque des revendications 4 à 6, caractérisé par le fait que l'organe d'arrêt (10) est constitué par une bille et l'évidement (14) dans la douille (15) recevant l'organe d'arrêt (10), par un alésage cylindrique.
8. Dispositif de perçage à percussion selon l'une quelconque des revendications 1 à 7, caractérisé par le fait que le dispositif sur la bague d'accouplement (12) maintenant l'organe d'arrêt (10) dans l'évidement (11) est constitué par une butée (40) qui, du côté du chanfrein d'attaque (13) opposé à la broche de perçage (1), s'étend de manière réglable dans la paroi de la bague d'accouplement (12) radialement vers l'arrière jusqu'à la sortie de l'organe d'arrêt (10) hors de l'évidement (11) et est soumise à l'action d'un ressort qui la pousse radialement vers l'intérieur.
9. Dispositif de perçage à percussion selon la revendication 8, caractérisé par le fait que la butée (40) est constituée par une rondelle élastique dans le sens radial qui s'étend le long de la circonférence de la bague d'accouplement (12) et est placée dans une rainure annulaire (41) suffisamment profonde pour le jeu de déplacement radial élastique de la rondelle élastique, ladite rainure annulaire (41) étant prévue dans la surface latérale intérieure de la bague d'accouplement (12).
10. Dispositif de perçage à percussion selon la revendication 9, caractérisé par le fait que la bague d'accouplement porte, du côté de la broche de perçage, à la suite de la rainure annulaire (41), une douille intérieure (42) qui constitue la paroi latérale de la rainure annulaire (41) et le chanfrein d'attaque (13).
11. Dispositif de perçage à percussion selon l'une quelconque des revendications 1 à 10, caractérisé par le fait que la bague d'accouplement (12) est soumise, dans sa direction de déplacement, à la force d'un ressort (23) s'appuyant sur le corps de mandrin (7), et que le corps de mandrin (7) comporte au moins une tête de butée (24) pour laquelle est prévu, dans la paroi de la bague d'accouplement (12), un évidement constitué par deux rainures axiales (25.1, 25.2) disposées l'une à côté de l'autre et présentant des longueurs différentes, les rainures (25.1, 25.2) étant ouvertes du côté dirigé vers la bague de réglage (20) pour l'entrée de la tête de butée (24) et la bague d'accouplement (12) pouvant être tournée sur le corps de mandrin (7) de telle façon que l'une ou l'autre des deux rainures (25.1, 25.2) est alignée axialement avec la tête de butée (24).
EP86100969A 1985-03-14 1986-01-24 Mandrin pour forage rotatif ou à percussion rotative Expired EP0194426B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3509165 1985-03-14
DE3509165A DE3509165C1 (de) 1985-03-14 1985-03-14 Bohrfutter
DE3515259 1985-04-27
DE19853515259 DE3515259C1 (de) 1985-04-27 1985-04-27 Bohrfutter

Publications (2)

Publication Number Publication Date
EP0194426A1 EP0194426A1 (fr) 1986-09-17
EP0194426B1 true EP0194426B1 (fr) 1988-03-23

Family

ID=25830322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100969A Expired EP0194426B1 (fr) 1985-03-14 1986-01-24 Mandrin pour forage rotatif ou à percussion rotative

Country Status (4)

Country Link
US (1) US4702485A (fr)
EP (1) EP0194426B1 (fr)
JP (1) JPH0628809B2 (fr)
ES (1) ES292511Y (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516451C1 (de) * 1985-05-08 1986-11-20 Günter Horst 7927 Sontheim Röhm Schlagbohreinrichtung
DE4005757A1 (de) * 1990-02-23 1991-08-29 Bosch Gmbh Robert Handwerkzeugmaschine mit bohrfutter
DE4023304C1 (fr) * 1990-07-21 1991-09-12 Guenter Horst 7927 Sontheim De Roehm
CN2423072Y (zh) * 1999-12-01 2001-03-14 上海星特浩企业有限公司 交、直流多用途组合工具
CN2409024Y (zh) * 1999-09-01 2000-12-06 上海星特浩企业有限公司 充电式多用途组合工具
DE102005007996A1 (de) * 2005-02-22 2006-08-31 Robert Bosch Gmbh Bohrfutter und Handwerkzeugmaschine mit einem Bohrfutter
US7644930B2 (en) * 2005-04-20 2010-01-12 Black & Decker Inc. Mechanism for providing residual thrust load on chuck actuating screw
EP2216114B1 (fr) * 2009-02-05 2013-08-28 Techtronic Power Tools Technology Limited Ensemble de mandrin d'outil électrique doté d'un mécanisme marteau
US8011444B2 (en) * 2009-04-03 2011-09-06 Ingersoll Rand Company Spindle locking assembly
US8777232B2 (en) 2009-07-29 2014-07-15 Jacobs Chuck Manufacturing Company Self-tightening chuck with a radial lock
CN102092033B (zh) * 2009-12-15 2013-01-09 苏州宝时得电动工具有限公司 电锤
DE102012211907A1 (de) 2012-07-09 2014-01-09 Robert Bosch Gmbh Drehschlagschrauber mit einem Schlagwerk

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
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
DE3125454A1 (de) * 1981-06-29 1983-01-20 Hilti AG, 9494 Schaan Bohrhammer fuer bohr- und schlagbohrbetrieb
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
ES292511Y (es) 1987-02-16
US4702485A (en) 1987-10-27
ES292511U (es) 1986-06-01
JPS62107905A (ja) 1987-05-19
JPH0628809B2 (ja) 1994-04-20
EP0194426A1 (fr) 1986-09-17

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