manufacturing method for differential cup of differential assembly

• Main Authors: JUNG, EUN YOUNG, HONG, EUY CHANG, HUH, YOUNG MIN, CHA, DAL JOON, LEE, KWANG O, PARK, EUN SOO, LEE, WON IL
• Format: Patent
• Language: English; Korean
• Published: 30.03.2017
• Subjects: FORGE FURNACES; FORGING; HAMMERING; MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING

The present invention provides a manufacturing method for a differential cup of a differential assembly, which preferentially forms an appearance of a hub unit for a flange unit to be formed after accurately filling ribs with respect to each bending portion or an edge portion. Moreover, a plurality of flow path holes formed in the hub unit can be formed along with a CNC process to process an internal diameter of the hub unit. Therefore, with cold forging, a differential cup can be manufactured by an aluminum material, and strength of the differential cup manufactured by a casting method can be obtained. 본 발명은 허브부의 외형을 우선적으로 성형하여 각 절곡 부위나 모서리 부위에 대한 살채움이 정확히 이루어진 이후에 플랜지부가 성형되도록 하고, 또한 허브부에 형성되는 복수의 유로홀은 허브부의 내경 가공을 위한 CNC 가공시 함께 성형될 수 있도록 한 디프렌셜 어셈블리의 디프렌셜 컵 제조방법을 제공하며, 이를 통해 냉간단조를 이용한 알루미늄 소재로 디프렌셜 컵을 제조할 수 있도록 하면서도 주물 방식으로 제조된 디프렌셜 컵의 강도도 얻을 수 있도록 한 것이다.