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비대칭 중공형 샤프트 압출제품의 휘어짐 개선에 관한 연구 원문보기

  • 저자

    이헌주

  • 학위수여기관

    공주대학교 대학원

  • 학위구분

    국내석사

  • 학과

    기계공학과

  • 지도교수

    전성식

  • 발행년도

    2014

  • 총페이지

    vii, 42장

  • 키워드

  • 언어

    kor

  • 원문 URL

    http://www.riss.kr/link?id=T13534466&outLink=K  

  • 초록

    Hollow shaft is one of the widely used products in automotives such as steering system, propeller shaft, etc. For manufacturing of the hollow shaft, raw metallic material is pressed by punch and it passes through the gap between the mandel and the bottom die., i.e., the forward extrusion is frequently used. Sometimes, products have asymmetric cross-sectional shape, which give rise to the unnecessary curvature with respect to the longitudinal direction owing to the different flow rate depending upon the cross-section reduction ratio. In the present study, the key way was proposed in the raw material and the size effect of the key way to the deflection quantity of the hollow product, therefore, the forming analysis, stress analysis in die using Deform-3D, and experiments were performed to reduce the axial deflection of the asymmetric hollow shaft product. Analysis and experiment results are able to be considered for asymmetric cross-sectional product manufacturing process in the future. * A thesis submitted to the committee of Graduate School, Kongju National University in partial fulfillment of the requirements for the degree of Master of Mechanical Engineering Conferred in August 2014.


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