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롤 다이 포밍에 의한 치형부품 제조 시 금형공차에 따른 성형성 평가
고대훈(Daehoon Ko),황성준(Sungjun Hwang),고대철(Daecheol Ko),이상곤(Sangkon Lee),권용남(Yongnam Kwon),이현석(HyunSuk Lee),박은수(Eunsoo Park) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
The roll die forming(RDF) process is new manufacturing technique for tooth parts such as drum clutch, hub clutch in vehicle transmission. The characteristic of RDF process is to deform the material using the installed roll in the die. The qualitative benefits obtained from RDF process are the increased productivity, reduced press load and increased dimension quality. In this paper, RDF process is applied to produce the hub clutch with tooth shape part. FE-simulation is conducted to confirm the metal flow according to process. Finally, the hub clutch as test product is manufactured by RDF process and comparison of dimension between test product and FE-simulation is good agreement.
윤성욱(Sungwook Yoon),고대훈(Daehoon Ko),김지현(Jihyun Kim),정석재(Sukjae Jeong) 대한산업공학회 2013 대한산업공학회지 Vol.39 No.1
Dispatching rule plays an important role in a hybrid flow shop. Finding the appropriate dispatching rule becomes more challenging when there are multiple criteria, uncertain demands, and dynamic manufacturing environment. Using a single dispatching rule for the whole shop or a set of rules based on a single criterion is not sufficient. Therefore, a multi-criteria decision making technique using ‘the order preference by similarity to ideal solution’ (TOPSIS) and ‘analytic hierarchy process’ (AHP) is presented. The proposed technique is aimed to find the most suitable set of dispatching rules under different manufacturing scenarios. A simulation based case study on a PCB manufacturing process is presented to illustrate the procedure and effectiveness of the proposed methodology.