METHOD AND DEVICE FOR THE PRODUCTION OF A TUBULAR WORKPIECE,PARTICULARLY A SHOCK ABSORBER PISTON ROD, AND SUCH A WORKPIECE

摘要

Disclosed is a method for producing a tubular workpiece, particularly a shoc k absorber piston rod. In a first step of said method, a first partial area (3 a) of an original tubular workpiece is initially reduced by means of a radial deformation process so as to decrease the peripheral diameter thereof, and a transition area (3c) that extends diagonal to the longitudinal axis (A) of t he original tubular workpiece (3) is formed, said transition area (3c) connecti ng the first partial area (3a) of the original workpiece, which has a reduced peripheral diameter, to a non-reduced second partial area (3b) that is adjacent to the transition area (3c). In a subsequent second step of the inventive method, the transition area (3c) of the original workpiece (3) is provided with a steep structure by means of a deformation process so as to from the substantially rectangular shoulder (2) of the workpiece (1).