가공지그의 구조적 건전성에 기반한 주강 커버허브 양산용대체 인서트 검증

초록

This study evaluated whether an alternative insert (I3) could replace the existing insert (I1) in the series production of a cast-steel cover hub. Prior to the production trial, the structural integrity of the jig-work piece system was verified to ensure reliable comparison under stable support conditions. Under the optimized process, the machinable quantity per insert corner for I3 increased from 1.0 to 3.3 parts. The flatness of the upper sealing surface was 0.0153 mm for I1 and 0.0099 mm for I3, and both values satisfied the 0.05 mm specification. In addition, the T01 machining time decreased from 60.18 min to 50 min, while the total machining time was reduced from 145.23 min to 135.23 min. Tool cost per cover hub was also lowered by approximately 42.7%. These results show that the combination of I3 and the optimized process is a practical alternative for series production.

키워드