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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 1992.11
- 수록면
- 360 - 368 (9page)
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초록· 키워드
오류제보하기
For the purpose of corrosion resistant, the use of coated sheet steel has increased in automotive industry. The result was that the
die design engineers have raised to concern about the change of strain distribution of the two sheet steels, bare and coated sheet steel, in the stamping process. The die set of an adjustable height of drawbead is designed as a new idea for controlling sheet metal flow during punch forming operation, because of the strain distribution is also influenced by the drawbead in sheet metal forming. This die set of an adjustable height of drawbead was used for the study of strain distribution on bottom and comer of deformed cup as a function of die material, height of drawbead , punch speed, blank holding force and lubricant in bare and electro-galvanized sheet steel forming. After the cup was deformed. to constant punch displacement, strain distribution of diagonal direction from cup center and punch load was measured by an automated strain measurement system and an oscilloscope. Experimental results show that the higher drawbead height, blank holding force, punch speed and the worse lubricant condition we have, the higher punch load and strain distribution on deformed cup. After the cup forming, the magnitude of strain on GM241 die is higher than that on Kiksite die
die design engineers have raised to concern about the change of strain distribution of the two sheet steels, bare and coated sheet steel, in the stamping process. The die set of an adjustable height of drawbead is designed as a new idea for controlling sheet metal flow during punch forming operation, because of the strain distribution is also influenced by the drawbead in sheet metal forming. This die set of an adjustable height of drawbead was used for the study of strain distribution on bottom and comer of deformed cup as a function of die material, height of drawbead , punch speed, blank holding force and lubricant in bare and electro-galvanized sheet steel forming. After the cup was deformed. to constant punch displacement, strain distribution of diagonal direction from cup center and punch load was measured by an automated strain measurement system and an oscilloscope. Experimental results show that the higher drawbead height, blank holding force, punch speed and the worse lubricant condition we have, the higher punch load and strain distribution on deformed cup. After the cup forming, the magnitude of strain on GM241 die is higher than that on Kiksite die
목차
Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
참고문헌
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