Seohan Industry Co., Ltd.

Korea Flange Co., Ltd.

Hyundai Motor Company

Kia Corporation

Jeong Lyul Park

Hyo Jin Kim

Wonkew Ban

Chang-Gu Lee

Min-Gyu Kim

Hyun Ho Yim

Won Kew Ban

Disclosed are a method of manufacturing cage for a constant velocity joint and a cage for a constant velocity joint manufactured using the same for providing a cage having improved hardness, strength, and elongation while having a structure with a uniform core part and surface and for ensuring economic feasibility by reducing manufacturing time. The method includes a cutting operation of forming a structure having an outer shape by cutting a cylindrical pipe, forming an outer circumference of the cut structure to have a curved surface thereon, performing a turning operation on a surface of the formed structure, a punching operation of forming a window in the surface of the structure on which the turning operation is performed, a broaching operation of processing an edge of the window formed via punching, and a heat treatment operation of fully hardening the completely broached cage via austempering.

Manufacturing method of cage and the cage manufactured by the method

A method for manufacturing a trunnion for a constant velocity joint, the trunnion having a plurality of journal units provided outside around a hub unit, the method including a first step of manufacturing the trunnion, a second step of thermally treating a rounded outer circumferential surface of the journal unit, and a third step of thermally treating a connection unit disposed between the journal unit and the hub unit and having a diameter smaller than that of the journal unit.

Method for manufacturing a trunnion for a constant velocity joint, a trunnion manufactured thereby, and a heat treatment device of the trunnion

Growing community of inventors

Hwaseong-si, South Korea

Jeong Lyul Park