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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/1253—Jaws movement actuated by an axially movable member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/226—Jaws 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)
Publications (1)
Publication Number | Publication Date |
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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 |
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DE (1) | DE295457C (en) |
Cited By (2)
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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0
- DE DENDAT295457D patent/DE295457C/de active Active
Cited By (2)
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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