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자동차용 시트 모터 하우징의 다이캐스팅 품질 향상에 관한 연구
이동욱(Tong-uk Lee),김병각(Byung-Gak Kim),김인관(In-Kwan Kim),김영수(Young-Soo Kim) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
In recent years, the automobile industry has focused on the cost reduction through integration of parts andproductivity increase by reducing the number of processes through modulation. Research on the integration of parts leads to quality improvement through integrated design of parts, and changes in material property and production process. This study presents a way to integrate seat motor housing parts, which comprise two caps and one housing in the existing products, into one part to reduce breakage during assembly. For the production of hot chamber die casting prototype, a process is designed using UNI GRAPHICS modeling. Z-CAST, a software utilizing finite difference method(FDM), is used to estimate defects and evaluate the prototype. The reliability test showed that the prototype satisfied material property, noise and vibration requirements. It also satisfied the required specification of run out test. As the prototype reduced the number of processes and cost, die casting is most appropriate for the production of seat motor housings.
자동차용 Seat Motor Housing의 부품 일체화에 관한 연구
이동욱(Tong Uk Lee),김병각(Byung Gak Kim),김인관(In Kwan Kim),김영수(Young Soo Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The general way of cost reduction in automobiles was focused on the substitute the material from combination to parts composites. The main research is focused on the substitutive design of Seat Motor Housing, with materials by the hot chamber diecasting process with zinc alloy diecasting. The newly developed parts were compared with the original products. The diecasting process was used to manufacture a Seat Motor Housing for automobile. Seat Motor Housing was modelled with UNI GRAPHICS that analyze with Z-CAST software. Z-CAST was computer software with FDM(finite difference method). The analysis results obtained about filling behavior and solidification of casting showed good agreement with test results. New product was evaluation of the performance. In result, Diecasting of Seat Motor Housing is expected to be best fitted in Works.
열전도성 첨가제 종류에 따른 사출 성형품의 기계적 특성에 관한 연구
이용연(Yong-Yeon Lee),김종순(Jong-Sun Kim),이동욱(Tong-Uk Lee),강태호(Tea-Ho Kang),김인관(In-Kwan Kim),김영수(Young-Soo Kim) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
In this study due to the increase of the thermal conductivity of plastics which is commonly insulator, plastics can be applied to heat-sink applications. These days quality of mechanical property and thermal conductivity of engineering plastic are required. this study focuses on evaluating for tensile properties and thermal conductivities of the test specimens. A variety of resins to which were added metal based fillers not ceramic based ones was injection-molded into test specimens. then he results of the thermal conductivity experiments were compared with the effects of each filler.
Realizable k-ε 난류모델을 이용한 축류식 싸이클론의 CFD 해석
김종순(Jong Soon Kim),이동욱(Tong Uk Lee),강태호(Tae Ho Kang),김인관(In Kwan Kim),김영수(Young Soo Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
In this study, numerical analysis to develop optimal dust collector having an axial inlet cyclone was performed for the 3 dimensional flow field with a control volume including gases and particles. We applied a commercial code FLUENT for calculating the flow distribution and the pressure drop. The realizable k-ε turbulence model was used to obtain the analytical results and the major parameters were the geometrical dimension of helical guide vanes, the inner diameter and length of cylindrical part. Finally we found out and recommended one dust collector that showed appreciable performance improvement. The experiment for confirming the numerical results was conducted by KS R 1041. From the numerical analysis and the experimental test, it was seen that the specified collector recommended in this study had dust collecting rate of about 99.91% and the ventilation resistance of 23.9mbar, and was more effective than old one that had been conventionally used in real work field.