• 제목/요약/키워드: 하드터닝

검색결과 12건 처리시간 0.018초

단속하드터닝에서 잔류응력과 가공변질층의 고찰 (Residual sterss and damaged layer in an intermittent hard turning)

  • 전준용
    • 한국공작기계학회:학술대회논문집
    • /
    • 한국공작기계학회 2000년도 춘계학술대회논문집 - 한국공작기계학회
    • /
    • pp.270-276
    • /
    • 2000
  • Hard turning has the potential to replace grinding process and to achieve significant reduction in production time and cost. The main applications for hard turning is finishing process, namely grinding process. Therefore, it must be able to satisfy high surface integrity of the workpiece. This paper discusses surface quality in terms of residual stress and damaged layer with respect to cutting parameters in an intermittent hard turning. Damaged layer experiment is carried out orthogonal array. From that is based on the orthogonal array. From the response table, cutting parameters are analyzed from the view point of the damaged layer and residual stress. From this experimental results, even though in the intermittent hard turning, surface integrity turns out be good enough for replacing grinding process.

  • PDF

풍력 발전기 부품가공용 복합수직선반의 최적 설계에 관한 연구 (Optimization of Multi-tasking Vertical Lathe For Windmill Parts)

  • 최학봉;이종훈;박우상;신흥철;오정석;박천홍;이동윤
    • 한국정밀공학회지
    • /
    • 제29권2호
    • /
    • pp.147-155
    • /
    • 2012
  • Wind power, which is one of the promising renewable energies, has shown the high growth rate of 35 % of the annual average in the recent 5 years and also windmill related equipment market has been fast-growing. Yaw & Pitch bearing are the key parts of windmill and are machined by huge vertical lathe which is monopolized by the advanced countries. The purpose of this study is to develop the multi-tasking vertical lathe for 5 MW grade windmill bearings, which might be mass produced 3 or 5 years later. In this study, the structure of the crossrail and rotary table, which are the key units of the huge multi-tasking vertical lathe, were optimized through the finite element analysis. Also the basic performance of the rotary table has been evaluated.