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
1. 서 론
2. 스프라켓 설계 및 구조해석
3. 시제품 제작
4. 스프라켓 재설계
    4.1 기존 스프라켓 문제점 및 해결방안
5. 구조해석
4. 결 론
References

• 정연승(Department of 3D Printing Tool & Mold Engineering) | Youn-Seung Jeong Corresponding Author