بررسی امکان تولید کاپوت تراکتور به صورت یکپارچه به روش هیدروفرمینگ

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده مهندسی مکانیک، دانشگاه صنعتی نوشیروانی بابل، بابل، ایران

چکیده

در این پژوهش امکان تولید یک قطعه صنعتی (کاپوت تراکتور) به روش هیدروفرمینگ و به طور یکپارچه با ورق فولادی کم کربن و ناهمسانگرد ST14، که امکان تولید آن به روش کشش عمیق سنتی امکان پذیر نبود، مورد بررسی قرار گرفت. در این بررسی از روش تجربی و شبیه سازی، استفاده شده است. با توجه به شکل قطعه برای تولید در روش هیدروفرمینگ دو قطعه کنار هم قرار گرفته و بعد از تولید از وسط نصف می شود. با توجه به ابعاد بزرگ قطعه به صورت مقیاس شده در ابعاد آزمایشگاهی، مورد بررسی قرار گرفت. نتایج بدست آمده از شبیه سازی با نمونه های شکل دهی شده در آزمایشگاه مورد مقایسه و اعتبار سنجی قرار گرفتند. با هدف کاهش هزینه تولید و افزایش کیفیت قطعه تولیدی، ابعاد اولیه ورق با چهار مرحله به روش حساسیت بهینه سازی گردید، علاوه بر آن تاثیر مسیر فشار مختلف بر روی کیفیت قطعه تولیدی مورد بررسی قرار گرفت. نتایج نشان داد که با استفاده از میسر فشار مناسب و بهینه سازی شکل ورق قطعه صنعتی مد نظر را در یک مرحله با کیفیت و دقت بالا تولید کرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigation the possibility of producing a tractor’s hood as integrate with hydroforming method

نویسندگان [English]

  • E. Marzban Shirkharkolaee
  • M. Bakhshi
  • A. Gorji
Metal Forming Research Center, Babol Noshirvani University of Technology, Babol, Iran
چکیده [English]

In this study the possibility of producing a part of tractor (tractor’s hood) with anisotropic low-carbon steel sheet, ST14, through hydroforming method has been investigated which was not possible through traditional deep-drawing method. It must be mentioned that this has been done both experimentally and through finite element simulation. Due to the shape of the work piece, two of them are placed beside each other to be formed through hydroforming process, then after producing they are cut into two separate halves. Because of the big size of the work piece, the smaller simulated scaled size has been used for doing the investigation. The simulation results were compared and validated to the experimental scaled work pieces. To reduce the production costs and increase the quality of manufactured pieces, the original dimensions of the blank optimized with sensitivity method at four stages. In addition, the influence of four pressure paths were examined on the quality of the produced pieces. The results show that through using optimal pressure paths and optimizing the shape of the sheet , the part can be produced with high quality and accuracy just in one stage.

کلیدواژه‌ها [English]

  • "tractor’s hood"
  • "hydroforming"
  • "optimization of blank size"
  • "anisotropy"

مراجع

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نشریه مهندسی مکانیک امیرکبیر
دوره 49، شماره 2
مرداد 1396
صفحه 387-400

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