- 등속조인트용 외륜의 다단 냉간 단조공정을 위한 공정개선 및 유한요소 해석
- ㆍ 저자명
- 강범수,구태완,Kang. B.S.,Ku. T.W.
- ㆍ 간행물명
- 소성가공
- ㆍ 권/호정보
- 2014년|23권 4호|pp.211-220 (10 pages)
- ㆍ 발행정보
- 한국소성가공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
The outer race of a constant velocity (CV) joint having six inner ball grooves has traditionally been manufactured by multi-stage warm forging, which includes forward extrusion, upsetting, backward extrusions, necking, ironing and sizing, and machining. In the current study, a multi-stage cold forging process is examined and an assessment for replacing and modifying the conventional multi-stage warm forging is made. The proposed procedure is simplified to the backward extrusion of the conventional process, and the sizing and necking are combined into a single sizing-necking step. Thus, the forging surface of the six ball grooves can be obtained without additional machining. To verify the suitability of the proposed process, a 3-dimensional numerical simulation on each operation was performed. The forging loads were also predicted. In addition, a structural integrity evaluation for the tools was carried out. Based on the results, it is shown that the dimensional requirements of the outer race can be well met.