| 摘要 |
The present invention relates to a cold forging method of a helical carrier producing method for electronic parking brake system including a helical gear (1), a spline unit (5) to be formed on one end of an output shaft (3), and a support shaft (7) to be formed on the other end of the helical gear (1). The present invention relates to a helical carrier producing method for electronic parking brake system through cold forging including the steps of: producing a first molding body which a spline unit (5) is formed on one side (S10); producing a second molding body of which a cylinder expansion piece (9) for helical gear production is installed in a middle part (S20); producing a third molding body in which a helical teeth unit (11) is installed (S30); and producing a final molding body (S40). |
