|제목(국문)||더블-액션 압출공정을 적용한 전동조향장치용 토션조인트 요크 개발|
|제목(영문)||Development of a Torsion Joint Yoke for Motor-Driven Power Steering System Using a Double-Action Extrusion Process|
(H. M. Kim
,공주대학교 일반대학원 기계자동차공학부 기계공학
김연구 (Y. G. Kim ,(주)대림엔티아이 ) ▷공저자네트워크등록하기
박용복 (Yong-Bok Park ,공주대학교 기계자동차공학부 (email@example.com) ) ▷공저자네트워크등록하기
The yoke, a component of conventional motor-driven power steering system, often contains welding defects from its manufacturing process. To eliminate these defects, the precision cold forging process has been tried. In this study, the double-action complex forging has been used to manufacture a torsion joint yoke. The bacbvard extrusion proved faster than the forward extrusion in forging of the product. The double-action complex forging process utilized an upper die composed of a punch, a punch guide, a disc spring and a coil spring. The forged material pushes up the punch guide, and then the disc spring and the coil spring balances the backward extrusion force. Consequently, the flow of material was essentially in the forward direction, resulting in a successful forging operation. The forging load of Al 6061-T6 was higher than that of the automotive structural hot rolled plate.
|keyword||Motor-Driven Power Steering, Precision Cold Forging, Torsion Joint Yoke, Double-Action Complex Forging, Split Die, Working Load|