Swaging machine for a continuous swaging of rod-shaped workpieces

Claim 1

A swaging machine for a continuous swaging of rod-shaped workpieces, which comprises means defining a feeding path for a workpiece, which feeding path has an axis, a plurality of connecting rod-like hammers, which extend substantially radially to said axis and are angularly spaced with respect thereto, a plurality of eccentric shafts, which are parallel to said feeding path and each of which carries an eccentric and is associated with one of said hammers and operable to drive the same, a plurality of sliding guides, each of which is disposed between one of said eccentric shafts and said axis of said feeding path and arranged to guide one of said hammers in the longitudinal direction thereof, and a plurality of elliptic chucks, each of which operatively connects one of said eccentric shafts to the hammer associated therewith and is arranged to transform a rotation of said eccentric shaft into a radial swaging motion of the hammer to and from said axis of said feeding path and into an oscillating rocking motion in a plane which includes said axis of said feeding path and the axis of the associated eccentric shaft, each of said elliptic chucks comprising a spider which is rigid with the associated hammer, a cylindrical link which surrounds said eccentric of the associated eccentric shaft, a first guiding element carried by said spider and provided with first helical teeth, and a second guiding element carried by said link and provided with second helical teeth meshing with said first helical teeth, said machine also comprising means which hold said second guiding elements against a displacement parallel to said eccentric shafts.