• Title, Summary, Keyword: 스피닝

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Analysis of the Three-Roll Power Spinning Process by using the Method of Force Polygon Diagram (힘다각형선도법을 이용한 세롤에 의한 파워스피닝공정의 해석)

  • Yoo, Dong-Jin
    • Journal of the Korean Society for Precision Engineering
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    • v.2 no.3
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    • pp.47-58
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    • 1985
  • The study is concerned with the analysis of the required loads and torque in the Three-Roll Power Spinning Process by using the Method of Force Polygon Diagram. Experiments are carried out using pure lead billets at room temperature. The radial force, the axial force and the torque occurring during the process are calculated theoretically and are compared with the experimental data. An approximate load distribution is known by the Force Polygon Diagram.

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광디스크 플레이어의 턴테이블용 폴리머재료의 마찰ㆍ마멸 특성 연구

  • 지광열;김대은
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.60-60
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    • 2004
  • 광디스크 미디어 저장기기에 있어서 음악과 영상을 재생하는 광디스크 플레이어의 기구부품 중 턴테이블은 디스크를 장착, 고정하여 디스크에 기록된 신호를 재생케 하는 광디스크 메커니즘의 중요기능 부품이다. 특히 별도의 클램퍼 없이 턴테이블에 부설된 탄지력만으로 디스크를 장착, 고정하는 슬림형 플레이어에서 스핀들 모터의 회전 시 턴테이블에 장학된 광디스크의 슬립은 재생에러를 야기한다. 스피닝 회전속도가 증가할수록 디스크의 슬립을 방지하기 위해서는 디스크와 턴테이블의 증가된 마찰력이 요구된다.(중략)

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A Improvement Strategy for Bellow Spining Defection Using Six Sigma (6 시그마를 사용한 Bellow Spining 불량 개선 전략)

  • Choi, Myun-Chung;Hong, Jea-Bok;Hwang, In-Keuk
    • Proceedings of the KAIS Fall Conference
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    • pp.358-360
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    • 2008
  • 이 논문에서는 벨로우 스피닝 불량율 감소하기 위해 6 시그마 방법을 이용하여 전개하면서 Improve 단계에서 일반적으로 많이 사용하는 요인분석에 의한 배치방법을 대신 다꾸지 방법을 통한 실험계획법을 적용함으로 불량을 감소시키는 방법을 사용하였다.

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Development and analysis of a low capacity energy storage system simulation model (저용량 발전 및 에너지 저장 시스템 시뮬레이션 모델 개발 및 분석)

  • Lee, Jooyoung;Lee, Jae Suk
    • Proceedings of the KIPE Conference
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    • pp.224-225
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    • 2019
  • 본 논문은 에너지 절약을 위한 특정 상업용 에너지 저용량 에너지저장시스템 모델 개발 및 연구를 수행하였다. 저용량 에너지저장시스템은 피트니스센터의 스피닝 기계에의 적용을 목적으로 하고 있으며 제안하는 시스템은 BLDC모터, Rectifier, DC-DC Coverter, Controller, Battery 로 구성되어 있다. 본 논문에서는 각 구성요소간의 직병렬 연결을 통하여 저용량 에너지저장시스템의 효율적인 운영방안을 제시한다. 제안하는 저용량 에너지저장시스템은 시뮬레이션을 통하여 모델링 및 결과 분석을 진행하였다.

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Study on the Appearance Spring back of Spinning Process (스피닝 공정에서의 스프링백 현상에 관한 연구)

  • 박중언;이우영;최석우;나경환;김승수
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.837-841
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    • 2000
  • Spinning process is a chipless metal forming method for axi-symmetric parts, which is more economical, efficient and versatile method of producing parts than the other sheet metal forming process such as stamping or deep drawing. It is a point deformation process where a metal disc. cylinderical workpiece. or preform in contact with a rotating chuck is plastically deformed by axial or axial-radial Motions of a tool or roller. in this study the variation of spring back with respect to various forming roller corner radius(Rr) and angle of roller holder($\alpha$) is investigated. Good as a result will help to get more precise shape by control of spring back.

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The Spinnability of Multi-step Cylindrical Cup in Spinning Process (스피닝 공정을 이용한 다단 원형 컵 형상의 성형성에 관한 연구)

  • 박중언;한창수;최석우;김승수;나경환
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.1016-1020
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    • 2001
  • The spinning is a very effective manufacturing technology for short production runs in a variety of sizes and shapes, because it can form the cross-section or tubular parts various shapes. However extensive experimental and analytical research has not been carried out. In this study, and fundamental experiment was conducted to improve productivity with process parameter such as tool path, angle of roller holder(a), feed rate(v) and corner radius of forming roller(Rr). These factors were selected as variables in the experiment because they were most likely expected to have and effect on spring back. The clearance was controlled in order to achieve the precision product which is comparable to deep drawing one. And also thickness and diameter distribution of a multistage cup obtained by shear spinning process were observed and compared with those of a commercial product produced by conventional deep drawing.

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A Finite Element Simulation of the V-Belt Pulley Spinning Process (V-벨트 풀리 스피닝 성형공정의 유한요소 시뮬레이션)

  • Kim S. J.;Kim H. R.;Lee T. K.;Kim Y. S.;Kim H. J.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • pp.81-84
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    • 2001
  • Some trials to simulate the spinning process by which V-belt pulley is usually being manufactured are done in this study. 2D finite element analysis (FEA) for the whole process to produce a mono-typed pulley including preforming, 1st spinning, axial compression and 2nd spinning processes is carried out using the commercial code $DEFORM2D^{TM}$. The sectional shape after each process is compared with that of real product. The deformed shape obtained from the FEA, on the whole, coincides with the experimental result well, but the thickness around the bottom of the V-groove is somewhat different each other.

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A Study on the Process of Tube End Spining by the Upper bound Method and Finite Element Method (상계해법과 유한요소법을 이용한 스피닝공정 해석에 관한 연구)

  • 김진형;홍성인;이영선
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • pp.23-30
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    • 1996
  • The purpose of this study was to investigate changes in thewall thickness of tube sinking and working forces by the upper bound method and ABAQUS code. The independent variables were : Workpiece material, original wall thickness of tube, die angle, friction, and diameter reduction. The results indicated that of these five variables were a factor in wall-thickness increase and working forces. Three variables, a inner tube wall angle and two angles of the velocity discontinuous surfaces, are optimized in this proposed velocity field by the upper bound method. In this method, we can estimate the working forces and final tube thicknesses whcih are similar to acturla forming process. Optimized process variables which are obtained by upper bound method are used in ABAQUS pre-model . In ABAQUS analysis, the stress and the strain contours which are considered to be heat generation occured by the friction during forming process are observed.

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Analysis of three force components of shear spinning (전기스피닝 공구의 삼분력 해석)

  • ;;Choi, J.C.;Kim, G.N.
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.5 no.2
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    • pp.88-93
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    • 1981
  • The three force components of shear spinning are calculated by a newly proposed deformation model. The spinning process is understooed as shearing deformation arter uniaxial yuelding by ending, and shear stress .tau.$\sub$rz/ becomes .kappa. the yueld limit in pure shear, in the deformation zone. The tangential forces are calculated and then the feed forces and normal foeces are obtained by assuming a nuiform distribution of roller pressure on the contact surface. An optimum contact area is obtaned by minimizing the bending energy required to obtain the assumed deformation mechanism. The calculated forces are compared with experimental data form published literature and present experiments. Good agreement cetween calculated and experimental values for working forces is obtained over a wide range of process variables.

Development of Spinning Machine for Manufacturing the Automobile Parts (자동차부품 제조를 위한 실험용 스피닝머시인 개발)

  • 이항수
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • pp.117-120
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    • 2002
  • This research is related with the development of CNC spinning machine. The purpose is to use for developing the practical parts of automobile such as dams, pulley, etc. The machine structure is made by heavy duty frame for the steel products with high strength. The hydraulic servo system is applied for giving the exactness of control. In order to improve the spinnability, the involute curves can be generated in CNC program In the future, this spinning machine is applicable to development of all the parts of industry such as electric parts, automobile parts, aerospace and the military supplies.

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