DE2435468A1 - Lathe pivot chuck clamping insert - has toothed and smooth surfaces for retention of rough and machined workpieces - Google Patents

Lathe pivot chuck clamping insert - has toothed and smooth surfaces for retention of rough and machined workpieces

Info

Publication number
DE2435468A1
DE2435468A1 DE2435468A DE2435468A DE2435468A1 DE 2435468 A1 DE2435468 A1 DE 2435468A1 DE 2435468 A DE2435468 A DE 2435468A DE 2435468 A DE2435468 A DE 2435468A DE 2435468 A1 DE2435468 A1 DE 2435468A1
Authority
DE
Germany
Prior art keywords
clamping
rough
jaw
toothed
retention
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.)
Pending
Application number
DE2435468A
Other languages
German (de)
Inventor
Erich Dormehl
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.)
Heyligenstaedt and Co Werkzeugmaschinenfabrik GmbH
Original Assignee
Heyligenstaedt and Co Werkzeugmaschinenfabrik GmbH
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 Heyligenstaedt and Co Werkzeugmaschinenfabrik GmbH filed Critical Heyligenstaedt and Co Werkzeugmaschinenfabrik GmbH
Priority to DE2435468A priority Critical patent/DE2435468A1/en
Publication of DE2435468A1 publication Critical patent/DE2435468A1/en
Pending 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
    • B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
    • B23B31/1627—Details of the jaws
    • B23B31/16275—Form of the jaws

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

Lathe clamping jaws for chucks, in which in the end facing the workpiece a swivel clamping insert (8) provided with several clamping surfaces (10, 11) is fitted. In a chuck body are guide grooves (2) in which the basic jaws (3) are centered. The clamping jaw (4) is firmly attached to the basic jaw (3) by means of screws (5) and a pinion rack. In the recess machined into the clamping jaw (4), a clamping insert (8) is pivotal located by means of a bolt (9). Two counterposed clamping surfaces (10, 11) are provided, of which the one (10) is provided with teeth for rough part fixture, and the other (11) has smoother radial surfaces for holding machined parts.

Description

Spannbacke für Spannfutter an Werkzeugmaschinen, insbesondere an Drehmaschinen Die Erfindung betrifft eine Spannbacke an Werkzeugmaschinen, insbesondere an Drehmaschinen. Clamping jaw for chucks on machine tools, in particular on Lathes The invention relates to a clamping jaw on machine tools, in particular on lathes.

Bisher war es notwendig, die Spannbacken beim Umrüsten eines Spannfutters vom Spannen eines Rohteiles auf das Spannen eines bearbeiteten Teiles von Hand auszuwechseln. Dieses ist erforderlich, weil die üblicherweise vorhandenen Zähne an den Spannflächen für Rohteile auf der Oberfläche des bearbeiteten Teiles unerwünschte Markierungen hinterlassen würden, Daher sind die Spannflächensder Spannbacken für bearbeitete Werkstücke glatt und im Radius dem Durchmesser des Werkstückes angepaßt. Dieses notwendige Auswechseln der Spannbacken verlängert die Umrüstzeit in unerwünschter Weise.Up to now it was necessary to change the clamping jaws when converting a chuck from clamping a raw part to clamping a machined part by hand. This is necessary because the teeth that are usually present on the clamping surfaces unwanted markings on the surface of the machined part for raw parts Therefore, the clamping surfaces of the clamping jaws are for machined Workpieces smooth and adapted in radius to the diameter of the workpiece. This The need to change the clamping jaws increases the changeover time in an undesirable way Way.

Die Aufgabe der Erfindung liegt darin, eine Einrichtung zu schaffen, die das Auswechseln der Spannbacken insgesamt unnötig macht. Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß in ihrem dem Werkstück zugewandten Ende ein schwenkbarer, mit mehreren Spannflächen versehener Spanneinsatz angeordnet ist. Damit erübrigt iich ein Auswechseln der Spannbacken, statt dessen werden die gewünschten Spannflächen durch ein einfaches Verschwenken der Spanneinsätze in Wirkstellung gebracht.The object of the invention is to create a device which makes changing the clamping jaws unnecessary. According to the invention the object is achieved in that in its end facing the workpiece a pivotable, Clamping insert provided with several clamping surfaces is arranged. So there is no need I have to change the clamping jaws, instead the desired clamping surfaces brought into the operative position by simply swiveling the clamping inserts.

Eine vorzugsweise Ausführungsform einer Spannbacke gemäss der Erfindung wird nachstehend anhand der Zeichnungen beschrieben.A preferred embodiment of a clamping jaw according to the invention is described below with reference to the drawings.

Eg zeigen: Fig. 1 eine teilweise Draufsicht auf das Spannfutter mit einer Spannbacke Fig. 2 eine Ansicht in Pfeilrichtung A nach Fig. 1.Eg show: FIG. 1 a partial plan view of the chuck a clamping jaw FIG. 2 is a view in the direction of arrow A according to FIG. 1.

In einem Futterkörper 1 sind Führungsnuten 2 angeordnet, in denen die Grundbacken 3 durch eine hier nicht näher erläuterte Verschiebeeinrichtung gemeinsam zentrisch zur Drehmitte bewegt werden. Mit der Grundbacke 3 ist die Spannbacke 4 mittels Schrauben 5 und der Rastverzahnung 6 fest verbunden. In der, in der Spannbacke 4 eingearbeiteten Ausnehmung 7 ist ein Spanneinsatz 8 mittels eines Bolzens 9 spielfrei schwenkbar gelagert. Zwei gegenüberliegende von seinen Umfangsflächen sind als Spannflächen lo, 11 ausgebildet, von denen die eine lo mit Zähnen für Rohteilspannung und die andere 11 mit glatter Radiusfläche zum Spannen von bearbeiteten Teilen vorgesehen sind. Der Spanneinsatz 8 kann auch mit mehreren, gegenüberliegenden Spannflächen ausgerüstet sein.In a chuck body 1 guide grooves 2 are arranged in which the base jaws 3 together by a displacement device not explained in detail here be moved centrically to the turning center. With the base jaw 3 is the clamping jaw 4 firmly connected by means of screws 5 and the locking teeth 6. In the, in the clamping jaw 4 incorporated recess 7 is a clamping insert 8 by means of a bolt 9 play-free pivoted. Two opposite of its peripheral surfaces are used as clamping surfaces lo, 11 formed, one of which lo with teeth for raw part clamping and the other 11 with a smooth radius surface for clamping machined parts are. The clamping insert 8 can also be equipped with several opposing clamping surfaces be.

In der Spannbacke 4 ist eine Fixiereinrichtung 12, bestehend zOB.In the clamping jaw 4 is a fixing device 12, consisting of zOB.

aus Indexierkugel, Druckfeder und Schraube, angeordnet, die den Spanneinsatz 8 in seiner jeweiligen Spannstellung justiert.made up of indexing ball, compression spring and screw, which form the clamping insert 8 adjusted in its respective clamping position.

Claims (1)

PatentansprücheClaims 1. Spannbacke für Spannfutter an Werkzeugmaschinen, insbesondere Drehmaschinen, dadurch gekennzeichnet, daß in ihrem dem Werkstück zugewandten Ende ein schwenkbarer, mit mehreren Spann -flächen (lo, 11) versehener Spanneinsatz (8) angeordnet ist.1. Clamping jaw for chucks on machine tools, especially lathes, characterized in that in its end facing the workpiece a pivotable, with several clamping surfaces (lo, 11) provided clamping insert (8) is arranged. L e e r s e i t eL e r s e i t e
DE2435468A 1974-07-24 1974-07-24 Lathe pivot chuck clamping insert - has toothed and smooth surfaces for retention of rough and machined workpieces Pending DE2435468A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2435468A DE2435468A1 (en) 1974-07-24 1974-07-24 Lathe pivot chuck clamping insert - has toothed and smooth surfaces for retention of rough and machined workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2435468A DE2435468A1 (en) 1974-07-24 1974-07-24 Lathe pivot chuck clamping insert - has toothed and smooth surfaces for retention of rough and machined workpieces

Publications (1)

Publication Number Publication Date
DE2435468A1 true DE2435468A1 (en) 1976-02-05

Family

ID=5921315

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2435468A Pending DE2435468A1 (en) 1974-07-24 1974-07-24 Lathe pivot chuck clamping insert - has toothed and smooth surfaces for retention of rough and machined workpieces

Country Status (1)

Country Link
DE (1) DE2435468A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150966A1 (en) * 1981-07-28 1983-02-17 Paul Forkardt GmbH & Co KG, 4000 Düsseldorf CLAMP
US11565330B2 (en) * 2020-09-28 2023-01-31 Alpha Precision Group, Inc. Machine chuck jaws and method of manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150966A1 (en) * 1981-07-28 1983-02-17 Paul Forkardt GmbH & Co KG, 4000 Düsseldorf CLAMP
US11565330B2 (en) * 2020-09-28 2023-01-31 Alpha Precision Group, Inc. Machine chuck jaws and method of manufacture
US12059732B2 (en) 2020-09-28 2024-08-13 Alpha Precision Group, Inc. Machine chuck jaws and method of manufacture

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