Hyundai Motor Company

Kia Motors Corporation

Sungwoo Hitech Co., Ltd.

Protech Korea Co. Ltd.

Sang Lae Lee

Mun Yong Lee

Dongjin Lee

Jeong Rok Yun

Heui Bom Lee

Juncheul Jung

Sin Ho Ryu

Sang Hee Lee

A method of manufacturing a nut integrated with a bracket forms the nut formed integrally with the bracket or a slab base nut by using a plate material supplied between a punch and a die. The slab base nut includes a base plate and a boss extending from the base plate and including female-threads. The base plate and the boss are integrated into a single piece without welding trace.

Nut integrated with bracket and method of manufacturing the same

A nut integrated with a bracket and a method of manufacturing the same is provided. The method includes a pre-drawing operation that forms a reference aperture and a processing cross section in the plate material supplied between the punch and the die, forming a beading portion and piercing a center of the beading portion. A forging operation forms a pipe portion having a tube shape and processes an exterior circumferential surface of the pipe portion. A precision forging process adjusts dimensions of the pipe portion formed in the tube shape, forms a protruding end that extends on a tip surface of the pipe portion and compresses the pipe portion to remove residual burrs on a surface. A post-processing operation cuts the processing cross section to a final product shape, and forms a threaded tap on an interior circumferential surface of the pipe portion.

Growing community of inventors

Ulsan, South Korea

Sang Lae Lee