DE295457C - - Google Patents

Info

Publication number
DE295457C
DE295457C DENDAT295457D DE295457DA DE295457C DE 295457 C DE295457 C DE 295457C DE NDAT295457 D DENDAT295457 D DE NDAT295457D DE 295457D A DE295457D A DE 295457DA DE 295457 C DE295457 C DE 295457C
Authority
DE
Germany
Prior art keywords
drill
conical
hand
chuck
rollers
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.)
Active
Application number
DENDAT295457D
Other languages
German (de)
Publication of DE295457C publication Critical patent/DE295457C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02Chucks
    • B23B31/10Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/1253Jaws movement actuated by an axially movable member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02Chucks
    • B23B31/10Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/226Jaws in the form of conical elements

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Der Gegenstand der Erfindung betrifft ein selbstspannendes Bohrfutter. Es sind Bohrfutter bekannt, bei denen keilförmige Klemmstücke dazu dienen, den Bohrer zwisehen sich einzuklemmen. Derartige Futter sind aber nicht selbstspannend. Bei selbstspannenden Futtern hat man bisher exzentrische Kurvenfläche benutzt, um die Klemmstücke an den Bohrer zur Anlage zuThe subject of the invention relates to a self-tensioning drill chuck. There are Drill chucks known in which wedge-shaped clamping pieces are used to zwisehen the drill to get caught. Such chucks are not self-tightening. With self-tightening Chucks have so far been used with an eccentric cam surface in order to place the clamping pieces on the drill

ίο bringen und alsdann die Selbstspannung zu bewirken. Solche Futter erhalten aber, wenn sie für stark abweichende Bohrerdurchmesser Verwendung finden sollen, einen großen Durchmesser.ίο bring and then the self-tension cause. Such chucks are given, however, if they are used for widely differing drill diameters Should be used, a large diameter.

Um. diese Übelstände zu vermeiden, werden nach vorliegender Erfindung konische Klemmrollen benutzt, die einerseits in üblicher Weise durch Emporschrauben des Futterkörpers auf der Bohrspindel zum anfängliehen Einklemmen des Bohrers von Hand, andererseits zum selbsttätigen Festspannen benutzt werden, indem sie sich an exzentrischen Innenflächen des Futterkörpers abwälzen können.Around. to avoid these evils will be According to the present invention, conical pinch rollers used, on the one hand in conventional Way to start by screwing up the chuck body on the drill spindle Clamping of the drill by hand, on the other hand, can be used for automatic clamping by using an eccentric Can roll off inner surfaces of the chuck body.

Das Futter ist in der Zeichnung in Fig. 1 und 2 im Längsschnitt für zylindrische und konische Bohrerschäfte, in Fig. 3 im Querschnitt nach der Linie A-B der Fig. 1, und in Fig. 4 von unten gesehen dargestellt. Es besteht aus dem Körper a, der Spannbüchse b, Z° den konischen Rollen c.. The chuck is shown in the drawing in FIGS. 1 and 2 in longitudinal section for cylindrical and conical drill shafts, in FIG. 3 in cross section along the line AB of FIG. 1, and in FIG. 4 as seen from below. It consists of the body a, the clamping sleeve b, Z ° the conical rollers c ..

Der Bohrer wird in die Mitte der drei Rollen gesteckt und die Spannbüchse leicht angezogen. Sobald der Bohrer beim Arbeiten stehenbleiben will, rollen sich die Halterpllen auf dem Bohrerschaft etwas ab und werden durch die kurvenartige Ausdrehung / der Spannbüchse so fest an denselben gedrückt, daß der Bohrer nunmehr der Drehrichtung des Bohrfutters folgen muß und bei immer größerem Widerstand immer fester gehalten wird. Für zylindrische oder konische Bohrerschäfte werden entsprechend konische Rollen verwendet. . . ·The drill is placed in the middle of the three rollers and the clamping sleeve is tightened slightly. As soon as the drill wants to stop while working, the holder plates roll on the drill shank and become through the curve-like recess / the Clamping sleeve pressed so tightly against the same that the drill is now in the direction of rotation of the chuck must follow and held steadily more firmly with increasing resistance will. For cylindrical or conical drill shafts, correspondingly conical rollers are used used. . . ·

Claims (1)

Patent-Anspruch:Patent claim: Bohrfutter mit konischer Hülse und keilartigen Klemmbacken, dadurch gekennzeichnet, daß die Klemmbacken als konische Rollen ausgebildet sind, die einerseits das Einspannen des Bohrers * von Hand infolge ihrer Konizität, andererseits das selbsttätige Festklemmen des Bohrers ermöglichen, indem sie sich an den exzentrischen Flächen (f) der konischen Innenwandung der Hülse abzuwälzen suchen.Drill chuck with conical sleeve and wedge-like clamping jaws, characterized in that the clamping jaws are designed as conical rollers which, on the one hand, enable the drill to be clamped by hand due to their conicity, and, on the other hand, enable the drill to be automatically clamped by being attached to the eccentric surfaces (f ) try to roll off the conical inner wall of the sleeve. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT295457D Active DE295457C (en)

Publications (1)

Publication Number Publication Date
DE295457C true DE295457C (en)

Family

ID=549933

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT295457D Active DE295457C (en)

Country Status (1)

Country Link
DE (1) DE295457C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009629A1 (en) * 1978-09-11 1980-04-16 Black & Decker Inc. Keyless chuck
EP0221330B1 (en) 1985-09-28 1991-01-02 BASF Aktiengesellschaft Foams and fibres made of melamine resins having an increased rigidity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009629A1 (en) * 1978-09-11 1980-04-16 Black & Decker Inc. Keyless chuck
EP0221330B1 (en) 1985-09-28 1991-01-02 BASF Aktiengesellschaft Foams and fibres made of melamine resins having an increased rigidity

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