DE808795C - Drill chuck - Google Patents

Drill chuck

Info

Publication number
DE808795C
DE808795C DEP53630A DEP0053630A DE808795C DE 808795 C DE808795 C DE 808795C DE P53630 A DEP53630 A DE P53630A DE P0053630 A DEP0053630 A DE P0053630A DE 808795 C DE808795 C DE 808795C
Authority
DE
Germany
Prior art keywords
chuck
drill
shaft
chuck body
toothed ring
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
DEP53630A
Other languages
German (de)
Inventor
Dipl-Ing Theodor Genkinger
Hermann Genkinger
Eduard Rapp
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.)
THEODOR GENKINGER MASCHINEN UN
Original Assignee
THEODOR GENKINGER MASCHINEN UN
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 THEODOR GENKINGER MASCHINEN UN filed Critical THEODOR GENKINGER MASCHINEN UN
Priority to DEP53630A priority Critical patent/DE808795C/en
Application granted granted Critical
Publication of DE808795C publication Critical patent/DE808795C/en
Expired legal-status Critical Current

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

Description

Die Erfindung betrifft Bohrfutter derjenigen Art, hei denen im Futterkörper ein radial zur Futterachse gelagertes, mit einer Schlüsselöffnung versehenes Kegelritze] vorgesehen ist, das mit einem im Futterkörper axial gesichert gelagerten Kegelzahnrad kämmt, dessen Drehung eine Verstellung einer die Klemmbacken aufnehmenden und deren radiale Verstellung zur Bohrerachse bestimmenden Kegelhülse bewirkt.The invention relates to drill chucks of the type, namely those in the chuck body a tapered groove with a key opening mounted radially to the chuck axis] is provided with a bevel gear mounted axially secured in the chuck body combs, the rotation of which an adjustment of the jaws receiving and their causes radial adjustment to the drill axis determining tapered sleeve.

Üblicherweise überträgt sich diese Drehung des Kegelzahnrings auf die unter einer bestimmten Neigung zur Futterachse geführten Spannbacken in der Weise, daß diese Spannbacken an ihren inneren Enden mit Gewindestücken versehen sind, mit denen ein vom Kegelzahnring verdrehbarer Gewindebolzen kämmt. Bei der dadurch bedingten axialen Verschiebung der Backen wird auch der von ihnen erfaßte Bohrer während der Festspannung axial bewegt. Er verändert dadurch seine ursprünglich beim Einstecken eingestellte Lage in bezug auf die formschlüssigen Mitnehmerflächen, die an dem Futterschaft oder einem mit diesem fest verbundenen Teil sitzen. Auch bei der ebenfalls bekannten Futterbauart, bei der die Spannbacken ohne Schlüssel durch Verdrehen einer Hülse axial verstellt werden, ändern diese Backen, und damit auch der von ihnen gehaltene Bohrer, während des Feststellens ihren Abstand von einem am Futterschaft vorgesehenen formschlüssigen Mitnehmer.This rotation of the bevel gear ring is usually transferred to the jaws guided at a certain inclination to the chuck axis in the Way that these jaws are provided with threaded pieces at their inner ends with which meshes a threaded bolt that can be rotated by the conical toothed ring. In the the axial displacement of the jaws caused by this is also the one that is covered by them Drill moves axially during clamping. He thereby changes his original position set when inserting in relation to the form-fitting driver surfaces, which sit on the lining shaft or a part firmly connected to it. Even with the well-known type of chuck, in which the clamping jaws without a key can be adjusted axially by turning a sleeve, these jaws change, and thus also the drill they hold, while noting their distance from a form-fitting driver provided on the chuck shaft.

Diese axiale Verschiebung des Bohrers während des Festspannens der Backen hat den Nachteil, daß eine ursprünglich beim Einstecken des Bohrers geschaffene Relativstellung des Mitnehmerlappens dieses Bohrers zum Mitnehmer bei der Festspannbewegung wieder verändert wird, so daß die endgültige Lage des Mitnehmerlappens am Bohrer zum formschlüssigen Mitnehmer gar nicht von vornherein eindeutig festgelegt werden kann. Zur Behebung dieses Nachteils ist gemäß der Erfindung vorgesehen, daß der Zahnring als Mütter auf dem im Futterkörper unverdrehbaren, aber relativ zu diesem axial verstellbaren Futterschaft, der die formschlüssigen Mitnehmerflächen 23, 24 trägt, geführt ist und die längs des Innenkegels in der Kegelhülse geführten Spannbacken federnd gegen die Stirnfläche des Schafts anliegen.This axial displacement of the drill during the tightening of the Baking has the disadvantage that an originally created when inserting the drill Relative position of the driver tab of this drill to the driver during the clamping movement is changed again, so that the final position of the driver tab on the drill cannot be clearly defined from the outset for the form-fitting driver can. To overcome this disadvantage it is provided according to the invention that the Toothed ring as mothers on the non-rotatable in the chuck body, but relative to this axially adjustable chuck shaft, which the form-fitting driver surfaces 23, 24 carries, is guided and the clamping jaws guided along the inner cone in the conical sleeve rest resiliently against the end face of the shaft.

Claims (1)

P @TENTANSPRCCHE: i. Bohrfutter rnit radial zur Futterachse im Futterkörper gelagertem Kegelritzel mit Schlüsselöffnung, das mit einem im Futterkörper axial gesichert gelagerten Kegelzahnring kämmt, dessen Drehung eine Verstellung einer die Klemmbacken aufnehmenden und deren radiale Verstellung zur Bohrerachse bestimmenden Kegelhülse bewirkt, dadurch gekennzeichnet, daß der Zahnring (15) als 'Mutter auf dem im Futterkörper unverdrehbaren, aber relativ zu diesem axial verstellbaren Futterschaft (3), der die formschlüssigen Mitnehrnerflächen (2:I) trägt, geführt ist und die längs des Innenkegels in der Kegelhülse (io) geführten Spannbacken (9) federnd (i2) gegen die Stirnfläche des Schafts (3) anliegen. z. Bohrfutter nach Anspruch i, dadurch gekennzeichnet, daß die Mitnehmerflächen (24) in einem unverdrehbar in den Schaft (3) eingesetzten Bolzen (23) vorgesehen und zweckmäßig treppenartig gestaffelt sind. P @ TENT CLAIMS: i. Drill chuck with bevel pinion with a key opening mounted radially to the chuck axis in the chuck body, which meshes with a conical toothed ring mounted axially secured in the chuck body, the rotation of which causes an adjustment of a tapered sleeve which accommodates the clamping jaws and determines their radial adjustment to the drill axis, characterized in that the toothed ring (15) is guided as a nut on the chuck shaft (3), which cannot rotate in the chuck body but is axially adjustable relative to this and which carries the form-fitting driver surfaces (2: I), and the clamping jaws (9), which are guided along the inner cone in the conical sleeve (io), are resilient (i2) rest against the face of the shaft (3). z. Drill chuck according to Claim i, characterized in that the driver surfaces (24) are provided in a bolt (23) inserted non-rotatably into the shaft (3) and are expediently staggered in a step-like manner.
DEP53630A 1949-09-02 1949-09-02 Drill chuck Expired DE808795C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP53630A DE808795C (en) 1949-09-02 1949-09-02 Drill chuck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP53630A DE808795C (en) 1949-09-02 1949-09-02 Drill chuck

Publications (1)

Publication Number Publication Date
DE808795C true DE808795C (en) 1951-07-19

Family

ID=7386558

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP53630A Expired DE808795C (en) 1949-09-02 1949-09-02 Drill chuck

Country Status (1)

Country Link
DE (1) DE808795C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960409C (en) * 1955-05-03 1957-03-21 Horst Gebhardt Drill chuck

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE571094C (en) * 1931-05-31 1933-02-25 Kurt Haessner Werkzeugfabrik Self-centering four-jaw drill and chuck
DE634785C (en) * 1934-04-27 1936-09-03 Jacobs Mfg Co Chuck
DE732276C (en) * 1937-01-10 1943-02-26 Heinrich Roehm Three-jaw chuck

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE571094C (en) * 1931-05-31 1933-02-25 Kurt Haessner Werkzeugfabrik Self-centering four-jaw drill and chuck
DE572171C (en) * 1931-05-31 1933-03-11 Kurt Haessner Werkzeugfabrik Self-centering four-jaw drill and chuck
DE634785C (en) * 1934-04-27 1936-09-03 Jacobs Mfg Co Chuck
DE732276C (en) * 1937-01-10 1943-02-26 Heinrich Roehm Three-jaw chuck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960409C (en) * 1955-05-03 1957-03-21 Horst Gebhardt Drill chuck

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