Patent ID: 6640679
Filing Date: 2003-11-04
Classification: B23B,Y10T

Abstract:
A collet chuck assembly, comprising:a spindle adapter body constructed and arranged to be mounted on the spindle of a turning machine, said spindle adapter body defining therein an interior cavity, an elongate axis of said spindle adapter body defining a collet assembly movement axis of the collet chuck assembly; a sleeve assembly having outer surfaces constructed and arranged to slidingly engage corresponding inner surfaces of said spindle adapter body for axial movement along the collet assembly movement axis, said sleeve assembly defining an interior collet head receiving passage therein, said collet head receiving passage having engaging, motion-translating surfaces arranged on at least a portion thereof, said sleeve assembly also comprising: a rear portion having one or more bearing surfaces extending perpendicularly with respect to the collet assembly movement axis; and one or more projections extending from said rear portion substantially parallel to the collet assembly movement axis; one or more resilient elastic members constructed and arranged to be installed between the bearing surfaces of said sleeve assembly and corresponding bearing surfaces of said spindle adapter body; and a bushing member constructed and arranged to be removably and fixedly mounted within the interior cavity of said spindle adapter body proximate to said sleeve assembly, said bushing having a central passage positioned and adapted to be operationally contiguous with the collet head receiving passage of said sleeve assembly, said central passage having structure constructed and arranged to secure a collet head against movement along the collet assembly movement axis, said bushing member also defining one or more passages therein arranged to receive the one or more projections of said sleeve assembly so as to place said sleeve assembly in motion-transmitting relation with motion-generating or transmitting structures connected to the turning machine.