자전거용 Cassette의 프레스 금형 개발에 관한 연구
A Study on the Press die of Bicycle Cassette
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초록
Cassettes are a key component for power transmission and smooth shifting, and their construction consists of sprockets and spiders. The sprocket receives the force generated by pressing the pedal through the chain and rotates the rear wheel. It is a circular part. As the shifting system for efficient driving of bicycles has been developed, chains and sprockets require more complicated shapes than the conventional ones, and researches are being conducted to increase the production efficiency of sprockets. Cr-Mo steel is mainly used as the material for sprockets, but the trend of converting high-performance cassette material to titanium, which is a material with high specific strength, is gradually increasing. In this study, we also studied the molding technology of titanium material for the 5th and 6th stage shape design, the finite element analysis and the mass production using the press mold.
Abstract
Cassettes are a key component for power transmission and smooth shifting, and their construction consists of sprockets and spiders. The sprocket receives the force generated by pressing the pedal through the chain and rotates the rear wheel. It is a circular part. As the shifting system for efficient driving of bicycles has been developed, chains and sprockets require more complicated shapes than the conventional ones, and researches are being conducted to increase the production efficiency of sprockets. Cr-Mo steel is mainly used as the material for sprockets, but the trend of converting high-performance cassette material to titanium, which is a material with high specific strength, is gradually increasing. In this study, we also studied the molding technology of titanium material for the 5th and 6th stage shape design, the finite element analysis and the mass production using the press mold.
참고문헌 (7)
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- 민세훈, "금형 형상에 따른 비대칭 핀치요크의 하중특성 연구", 한국기계기술학회지, 17(2), pp.433~438 (2015), 한국기계기술학회[DOI]
- 류미라, "프레스 성형법을 이용한 자동차용 카본 휠 금형 설계에 관한 연구", 한국기계기술학회지, 18(6), pp.853~859 (2016), 한국기계기술학회[DOI]