Device for changing chuck attachment jaws
AssigneeIndex-Werke Komm.-Ges. Hahn & Tessky
InventorsHelmut F. Link, Walter Grossmann
Life of this patent
Estimating the term…
Abstract
Device for changing the attachment jaws of a chuck provided with main jaws, each of which has two axially aligned bolts for exact positioning of the attachment jaws. These bolts engage and fit into bores in the attachment jaw and guide a locking slide means which is displaceable in a radial direction by means of a headless screw inserted into the attachment jaw. A gripping device for the atachment jaws has a screw driving means and a threaded bore for the screw and so the latter is screwed partially out of the attachment jaw and into the gripping device in order to connect gripping device and attachment jaw with one another.
Claims16
An apparatus for changing chuck attachment jaws for chucks comprising a plurality of main jaws displaceable on a chuck body in radial direction relative to the chuck axis, each of said main jaws mounting an interchangeable attachment jaw serving to clamp workpieces, main jaw and attachment jaw having a recess and a projection on their facing end surfaces, said projection being insertable into said recess in a direction having at least one component in the direction cf the chuck axis, and also comprising an attachment jaw gripping device for holding an attachment jaw to be changed, said gripping device havlng an actuating element for actuating a locking device provided between main jaw and attachment jaw, characterized in that main jaw and attachment jaw (24 and 30, respectively) have at least two recesses (38, 40) and two projections (26, 28) on their facing end surfaces (25, 34), one of said projections (26) being insertable into t:he associated recess (38 or 40) to fit in a radial as well as a tangential direction and the other projection (28) to fit at least in a tangential direction, and that said locking device (100, 72, 80) has clamping faces (76, 78;
- 74, 104) inclined relative to said end faces (25, 34) for pressing said end faces together.
Dependencies are inferred from the claim text.