Study of Cold Extrusion Forming Process for Piston Pin
On the basis of the analysis of piston pin structure,the cold extrusion process plan and extrusion map were designed,the die diameter and the combined sizes were determined;the combined punch die which facilitates adjustment and replacement was designed to ensure the extrusion concentricity.According to the working characteristics of the punch die,taking the appropriate heat treatment process,the use life of the die can be lengthened.