DE574505C - Multi-jaw chucks for machine tools - Google Patents

Multi-jaw chucks for machine tools

Info

Publication number
DE574505C
DE574505C DEB153647D DEB0153647D DE574505C DE 574505 C DE574505 C DE 574505C DE B153647 D DEB153647 D DE B153647D DE B0153647 D DEB0153647 D DE B0153647D DE 574505 C DE574505 C DE 574505C
Authority
DE
Germany
Prior art keywords
machine tools
jaw chucks
piece
spindles
star
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
DEB153647D
Other languages
German (de)
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.)
Publication date
Priority to DEB153647D priority Critical patent/DE574505C/en
Priority claimed from US608763A external-priority patent/US1971638A/en
Application granted granted Critical
Publication of DE574505C publication Critical patent/DE574505C/en
Priority claimed from US707363A external-priority patent/US2006621A/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
    • B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
    • B23B31/16045—Jaws movement actuated by screws and nuts or oblique racks
    • B23B31/16079—Jaws movement actuated by screws and nuts or oblique racks using mechanical transmission through the spindle

Landscapes

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

Description

Mehrbäcken-Spannfutter für Werkzeugmaschinen Die Erfindung betrifft ein Mehrbacken-Spannfutter für Werkzeugmaschinen, bei welchem die Schraubenspindeln gemeinsam angetrieben werden und in einem in sich geschlossenen, vom Futterkörper unabhängigen Bauteil gelagert sind. Die Erfindung bezieht sich auf eine weitere Ausgestaltung dieser bekannten Futter, derart, daß die hohlen Schraubenspindeln auf sternartig angeordneten, aus einem Stück bestehenden Achsensternen angebracht sind. Die Arme des Achsensternes tragen an den Enden Drucklager, gegen die sich die hohlen Schraubenspindeln stützen, während das andere Ende sich gegen einen Bund am Mittelstück des Achsensternes legt.Multi-jaw chucks for machine tools The invention relates to a multi-jaw chuck for machine tools in which the screw spindles are driven together and in a self-contained, from the chuck body independent component are stored. The invention relates to another Design of this known chuck, such that the hollow screw spindles mounted on one-piece axis stars arranged in a star-like manner are. The arms of the axle star carry pressure bearings at the ends, against which support the hollow screw spindles while the other end is against a collar on the center piece of the axle star.

Durch diese Anordnung werden die Schraubenspindeln in axialer Richtung derart festgelegt, daß keinerlei Verschiebungen der Achsen und damit der Spannbacken :eintreten können. Dadurch wird erreicht, daß die Spannbacken alle drei gleichmäßig fassen, was besonders bei mechanischem Antrieb des Spannfutters sehr wesentlich ist. Die Spannkraft des Futters wird auf diese Weise möglichst groß, andererseits der Kraftverbrauch gering, da die Schraubenspindeln auf Kugeldrucklagern laufen.With this arrangement, the screw spindles are in the axial direction set in such a way that no displacements of the axes and thus of the clamping jaws : can enter. This ensures that the clamping jaws all three evenly grasp, which is particularly important when the chuck is driven mechanically is. In this way, the clamping force of the chuck is as great as possible, on the other hand the power consumption is low because the screw spindles run on ball thrust bearings.

Die Antriebsräder der Spindeln können gegebenenfalls mit diesen aus einem Stück bestehen. Ma.n erhält also auf diese Weise geringsten Kraftbedarf, geringe Betriebskosten, kleine Antriebsmotoren und große Spannleistung.The drive wheels of the spindles can optionally be used with these consist of one piece. In this way, Ma.n receives the lowest power requirement, the low one Operating costs, small drive motors and large clamping capacity.

Auf der Zeichnung ist ein. Ausführungsbeispiel des Futters dargestellt. Fig. i zeigt das Futter im Längsschnitt, Fig. 2 eine Ansicht der Spindeln mit dem Achsenstem und den Lagern, Fig. 3 den Achsenstern allein.On the drawing is a. Embodiment of the feed shown. Fig. I shows the chuck in longitudinal section, Fig. 2 shows a view of the spindles with the Axis star and the bearings, Fig. 3 the axis star alone.

In den Körper i des Spannfutters ist der Achsenstern 2 eingesetzt, der beispielsweise aus drei ein Stück bildenden Achsen 3 besteht, die in dem Mittelstück 2 vereinigt sind. Auf diesen Achsen drehen sich die Spindeln ¢, welche sich einerseits gegen die Drucklager 6 am freien Ende der Achsen und anderseits gegen die Bunde am Mittelstück 2 stützen. Dadurch werden die Achsen in gegenseitig unveränderlicher Stellung gehalten. Durch die Drehung des Grundrades 5 werden also die Spindeln gleichmäßig gedreht und die Backen 7 gleichmäßig angespannt.The axis star 2 is inserted into the body i of the chuck, which consists, for example, of three axles 3 forming one piece, which are in the middle piece 2 are united. The spindles ¢ turn on these axes, which on the one hand against the thrust bearing 6 at the free end of the axes and on the other hand against the collars Support on the middle piece 2. This makes the axes mutually immutable Position held. As a result of the rotation of the base wheel 5, the spindles become uniform rotated and the jaws 7 clamped evenly.

Der Antrieb des Futters kann beispielsweise von einem 'Elektromotor aus erfolgen durch die in der Drehbankspindel i o sitzende Welle i i.The feed can be driven, for example, by an 'electric motor are carried out by the shaft i i seated in the lathe spindle i o.

Claims (1)

PATENTANSPRUCH: Mehrbacken-Spannfutter für Werkzeugmaschinen, bei welchem die Schraubenspindeln gemeinsam angetrieben werden und in einem in sich geschlossenen, vom Futterkörper unabhängigen Bauteil. gelagert sind, dadurch gekennzeichnet, daß die -hohlen Schraubenspindeln (q.) auf sternartig angeordneten, aus einem Stück bestehenden, an den Enden mit Drucklagern versehenen Achsen (3) ruhen und sich anderseits gegen .einen Bund am Mittelstück des Achsensternes stützen.PATENT CLAIM: Multi-jaw chucks for machine tools, at which the screw spindles are driven together and in one closed component independent of the chuck body. are stored, characterized that the hollow screw spindles (q.) on a star-like arrangement, made of one piece existing axles (3) provided with thrust bearings at the ends rest and on the other hand Support against a collar on the center piece of the axle spider.
DEB153647D 1931-09-04 Multi-jaw chucks for machine tools Expired DE574505C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB153647D DE574505C (en) 1931-09-04 Multi-jaw chucks for machine tools

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEB153647D DE574505C (en) 1931-09-04 Multi-jaw chucks for machine tools
DE1971638X 1931-09-04
US608763A US1971638A (en) 1931-09-04 1932-05-02 Motor operated chuck for lathes and other machine tools
US707363A US2006621A (en) 1931-09-04 1934-01-19 Motor operated chuck for lathes and other machine tools

Publications (1)

Publication Number Publication Date
DE574505C true DE574505C (en) 1933-04-13

Family

ID=32512401

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB153647D Expired DE574505C (en) 1931-09-04 Multi-jaw chucks for machine tools

Country Status (1)

Country Link
DE (1) DE574505C (en)

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