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DE908550C - Chuck - Google Patents

Chuck

Info

Publication number
DE908550C
DE908550C DEN3035A DEN0003035A DE908550C DE 908550 C DE908550 C DE 908550C DE N3035 A DEN3035 A DE N3035A DE N0003035 A DEN0003035 A DE N0003035A DE 908550 C DE908550 C DE 908550C
Authority
DE
Germany
Prior art keywords
tapered rollers
chuck
chuck body
slope curve
inner cone
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
DEN3035A
Other languages
German (de)
Inventor
Otto Nast
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
Priority to DEN3035A priority Critical patent/DE908550C/en
Application granted granted Critical
Publication of DE908550C publication Critical patent/DE908550C/en
Expired 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
    • B23B31/226Jaws in the form of conical elements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Description

Gegenüber der Unzahl von bekannten Spannfuttern für Bohrmaschinen, Drehbänke usw., die in der Regel entweder durch in axialer Richtung verschiebbare oder in radialer Richtung bewegliche Backen wirken, stellt die Erfindung eine l\Zeüerung dar. Die Erfindung betrifft ein Spannfutter, bei dem die Backen als Kegelrollen ausgebildet sind, die an einem Innenkegel des Futterkörpers anliegen und mit ihrer vorderen Stirnfläche an einer auf dem Futterkörper v erschraubbaren Spannmutter anliegen. Neu ist, daß die Anlagefläche der Spannmutter für die Kegelrollen als entgegengesetzt der Drehrichtung des Futters ansteigende Steigungskurve ausgebildet ist. Durch diese Anordnung werden die Kegelrollen bei der geringsten Rollbewegung axial verschoben. Im gespannten Zustand wird das Rollen, verursacht durch den eventuellen Schlupf des gespannten Werkzeuges, z. B. eines Bohrers,. von der Steigungskurve in eine Axialbewegung umgewandelt, so daß die Rollen, ansteigend mit der Drehkraft am Werkzeug, fester in den umschließenden Innenkegel gepreßt werden und dadurch ein Schlupfen unmöglich machen, d. h. selbsthemmend wirken.Compared to the myriad of known chucks for drilling machines, Lathes, etc., which are usually either displaceable in the axial direction or jaws movable in the radial direction act, the invention provides a solution The invention relates to a chuck in which the jaws as tapered rollers are formed, which bear against an inner cone of the chuck body and with her front face on a clamping nut that can be screwed onto the chuck body issue. What is new is that the contact surface of the clamping nut for the tapered rollers as opposite to the direction of rotation of the chuck formed rising slope curve is. With this arrangement, the tapered rollers become with the slightest rolling movement axially displaced. In the tensioned state, the rolling caused by the eventual Slip of the clamped tool, e.g. B. a drill ,. from the slope curve converted into an axial movement so that the rollers increase with the torque on the tool, are pressed more firmly into the surrounding inner cone and thereby make slippage impossible, d. H. act self-locking.

In der Zeichnung ist ein Ausführungsbeispiel als Rohrfutter dargestellt. Der auf dem Morsekonus sitzende Körper i hat an seiner Unterseite eine konische Bohrung. In dieser liegen die Kegelrollen 2 frei beweglich, jedoch durch den Käfig 3 in i2o° Abstand gehalten. Der Außenmantel4 wird beim Drehen durch den Schraubgang 5 auf und ab bewegt und vollbringt so die Grobeinstellung auf den Durchmesser des Werkstückes. In seinem Boden trägt der Außenmantel die Steigungskurve 6, auf der sich die drei Kegelrollen mit der Stirnseite abstützen. Die Feder 7 drückt die Kegelrollen nach unten, so daß sie sich stets auf der Steigungskurve abstützen. Sobald die Kegelrollen sich drehen, rollen sie auf die Steigungskurve auf und schieben sich um die zurückgelegte Steigungsdifferenz in die konische Bohrung des Körpers i hinein und spannen so automatisch fest. Das Lösen erfolgt durch Drehen in entgegengesetzter Richtung: Bei drei gleichen Kegelrollen ist eine dreigängige Steigungskurve erforderlich. Wird die Steigungskurve eingängig ausgeführt, so müssen die Kegelrollen verschieden lang sein.In the drawing, an embodiment is shown as a pipe liner. The body i sitting on the Morse cone has a conical underside Drilling. In this the tapered rollers 2 are freely movable, but through the cage 3 held at a distance of i2o °. The outer jacket4 is turned through the screw thread 5 moves up and down and thus accomplishes the rough adjustment to the diameter of the Workpiece. In its bottom, the outer jacket carries the slope curve 6 on the the three tapered rollers are supported with the front side. The spring 7 presses the tapered rollers downwards so that they are always supported on the slope curve. Once the tapered rollers turn, they roll up on the slope curve and slide around the covered one Pitch difference into the conical bore of the body i and so clamped automatically fixed. Loosening is done by turning in the opposite direction: if three of the same Tapered rollers, a three-course slope curve is required. Becomes the slope curve designed catchy, the tapered rollers must be of different lengths.

Claims (1)

PATENTANSPRUCH: Spannfutter mit an einem Innenkegel des Futterkörpers anliegenden Kegelrollen, die mit ihrer vorderen Stirnfläche an einer auf dem Futterkörper verschraubbaren Spannmutter anliegen, dadurch gekennzeichnet, daß die Anlagefläche der Spannmutter für die Kegelrollen als entgegengesetzt der Drehrichtung des Futters ansteigende Steigungskurve ausgebildet ist. Angezogene Druckschriften: Deutsche Patentschriften Nr. 365 491, 417 i44-, österreichische Patentschrift Nr. 89 z22.Claim: chucks with tapered rollers resting on an inner cone of the chuck body, the front face of which are in contact with a clamping nut that can be screwed onto the chuck body, characterized in that the contact surface of the tensioning nut for the tapered rollers is designed as a gradient curve rising in the opposite direction to the direction of rotation of the chuck. Attached publications: German patent specifications No. 365 491, 417 i44-, Austrian patent specification No. 89 z22.
DEN3035A 1950-10-24 1950-10-24 Chuck Expired DE908550C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN3035A DE908550C (en) 1950-10-24 1950-10-24 Chuck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN3035A DE908550C (en) 1950-10-24 1950-10-24 Chuck

Publications (1)

Publication Number Publication Date
DE908550C true DE908550C (en) 1954-04-08

Family

ID=7337939

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN3035A Expired DE908550C (en) 1950-10-24 1950-10-24 Chuck

Country Status (1)

Country Link
DE (1) DE908550C (en)

Cited By (1)

* 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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT89122B (en) * 1921-02-28 1922-08-10 Otto Seifert Self-chuck.
DE365491C (en) * 1921-02-22 1922-12-15 Wilh Von Neudeck Chuck with conical clamping rollers
DE417144C (en) * 1924-08-08 1925-08-06 Wilhelm V Neudeck Chuck with conical clamping rollers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE365491C (en) * 1921-02-22 1922-12-15 Wilh Von Neudeck Chuck with conical clamping rollers
AT89122B (en) * 1921-02-28 1922-08-10 Otto Seifert Self-chuck.
DE417144C (en) * 1924-08-08 1925-08-06 Wilhelm V Neudeck Chuck with conical clamping rollers

Cited By (1)

* 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

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