Patent ID: 7458299
Filing Date: 2008-12-02
Classification: B23B,Y10S,Y10T

Abstract:
1. A centering device for guided transfer of bars from a feeder to a lathe, that is interposable between the feeder and the late in alignment with a bar guide of the feeder and with a mandrel of the lathe, the device comprising: a supporting structure which is constantly aligned with an opening of the lathe from which a bar enters therein, with a bar guide of the feeder, and with a mandrel of the lathe; a bush element for fixing to a fixing seat which is rigidly coupled to said supporting structure; a substantially tubular body, which is rigidly coupled to said bush element, coaxial thereto and is provided with a housing seat, fixed anchoring elements supported by said tubular body; elastic means; elastic positioning elements acting between said bush element and said tubular body; and a ring accommodated in said seat and comprising oscillating elements that are shaped like tiles which are each pivoted to a respective one of said fixed anchoring elements with a first end thereof and are retained in mutual contact by said elastic means acting radially at a second end thereof so as to delimit a through opening whose diameter is substantially as long as and in any case not smaller than a diameter of a bar to be transferred, said ring and said fixed anchoring elements being axially movable within said housing seat until their complete exit therefrom, by forcing in an axial direction at least one of said elastic positioning elements for positional movement of said ring and anchoring elements from a bottom of said housing seat toward the late.