플라스티신을 이용한 BJ형 등속죠인트 외륜의 냉간단조공정설계

Design of the Cold Forging Process for the Outer Race of BJ Type Constant Velocity Joint using Plasticine

The outer race of BJ type C.V.Joint has a complicated shape and ball grooves. It is produced by cold or warm precision forging. Especially, the precision level of the ball grooves determines the quality of the part. The objective of the present study is to develop process conditions of the cold forging using the plasticine. Because the cold forging consists of forward extrusion, upsetting, backward extrusion and cold sizing, the study was focused on finding the best perform for each process. The data obtained from the study will be used in the design of the cold forging process for the outer race.