مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

بررسی اثر استراتژی‌های ماشین‌کاری بر روی زبری سطح و زمان فرزکاری قطعه‌ای با سطوح محدب، مقعر و صاف

نوع مقاله : پژوهشی اصیل

نویسندگان
دانشگاه علوم و فنون هوایی شهید ستاری
چکیده
فرایند فرزکاری به طور گسترده در صنعت تولید برای شکل‌دهی قطعات هندسی پیچیده استفاده می‌شود. باتوجه‌به انعطاف‌پذیری فرایند برش و متغیرهای مختلف درگیر، بهینه‌سازی فرایند به یک مسئله کلیدی به‌منظور دست‌یابی به بهره‌وری و کیفیت بالاتر تبدیل شده است. برای بهینه‌سازی برنامه‌ریزی فرایند، انتخاب یک استراتژی ماشین‌کاری مناسب مهم است. پیاده‌سازی و انتخاب استراتژی‌ها و جهت‌گیری‌های مسیر ابزار در فرایند ماشین‌کاری به‌ویژه در صنایع هوافضا و قالب‌سازی بسیار مهم است. انتخاب مناسب می‌تواند منجر به‌صرفه جویی قابل‌توجه در زمان ماشین‌کاری، بهبود کیفیت سطح قطعه کار و بهبود در عمر ابزار و در نتیجه منجر به کاهش هزینه کلی و بهره‌وری بالاتر ‌شود. بنابراین، هدف این مقاله شناسایی بهترین استراتژی پرداخت از نظر زبری سطح و زمان پرداخت است. در این مقاله استراتژی شلو مورد بررسی قرار گرفته و فرزکاری مرحله پرداخت آن با سه استراتژی فرایند فرزکاری از جمله شطرنجی، آفست سه‌بعدی، شطرنجی مسطح مورد مطالعه و مقایسه قرارگرفته است. در مقاله حاضر مقایسه استراتژی‌ها در نرم افزار پاورمیل و با فرز انگشتی سرتخت انجام شده است که قابلیت کف تراشی و دیواره تراشی را به طور همزمان دارد. پارامترهای برش ابزار برای تمام استراتژی‌های آزمایش شده ثابت در نظر گرفته شد. کیفیت ماشین‌کاری از طریق مقایسه زبری سطح، توپوگرافی سطح و پارامترهای کنترل ابعاد مورد ارزیابی قرار گرفت. نتایج حاکی از آن است که استراتژی ماشین‌کاری شلو کم‌ترین زبری سطح و بهترین کیفیت سطح و استراتژی شطرنجی بیشترین زبری سطح و بدترین کیفیت سطح را در این آزمایش دارد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

The Effect Of Machining Strategies On The Surface Roughness And Milling Time Of Part With Convex, Concave, And Smooth Surfaces

نویسندگان English

Reza Sarkhosh
Mohammad Kazemi nasrabadi
Shahin Nazari Googli
Aeronautical University of Science and Technology
چکیده English

The milling process is widely used in the manufacturing industry to shape complex geometric parts. Considering the flexibility of the cutting process and the various variables involved, process optimization has become a key issue in achieving higher productivity and quality. To optimize the process planning, it is important to choose a suitable machining strategy. Implementation and selection of tool path strategies and orientations are very important in the machining process, especially in the aerospace and molding industries. The right choice can lead to significant savings in machining time, improvement of work-piece surface quality, and improvement in tool life, thus leading to overall cost reduction and higher productivity. Therefore, this article aims to identify the best strategy in terms of surface roughness and milling time. In this article, Shallow's strategy has been investigated, and the milling of its finishing stage has been studied and compared with three strategies of the milling process, including raster, 3D offset, and raster flat. In this article, the comparison of the strategies in the Powermill software and with the flat-head finger mill, which can grind the floor and the wall simultaneously, has been done. Tool-cutting parameters were considered constant for all tested strategies. Machining quality was evaluated by comparing surface roughness, surface Topography, and dimension control parameters. The results indicate that the Shallow machining strategy has the lowest surface roughness and the best surface quality, and the raster strategy has the highest surface roughness and the worst surface quality in this test.

کلیدواژه‌ها English

Milling Strategies
Shallow
Surface Topography
Surface roughness
Milling time
Powermill Software
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