فصلنامه علمی

نوع مقاله: مقاله پژوهشی

نویسنده

دانشکده فنی و مهندسی ،دانشگاه قم،قم،یران

چکیده

در این مقاله یک سیستم آموزش هوشمند در محیط مهندسی همزمانی براساس تکنیک شی مدار جهت بهینه سازی و ارزیابی قابلیت ساخت طراحی و ایجاد تمام فرایندهای ممکن طراحی و ساخته شده است. در این سیستم آموزش هوشمند مشخصات هندسی قطعه طراحی شده و فیچرهای آن از نظر قابلیت ساخت با فرایندهای سنتی (مانند سوراخکاری، برقوکاری، بورینگ، فرزکاری و رزوه زنی) و فرایندهای غیر سنتی (مانند ماشین­کاری الکترو شیمیایی، تخلیه الکتریکی، اولتراسونیک، فرایندهای ترکیبی الکترو شیمیایی و تخلیه الکتریکی، و فرایند ترکیبی وایرکات مورد ارزیابی قرار می­گیرد. در این سیستم تمام فرایندهایی که می­شود فیچرهای طراحی را ساخت، در سیستم ایجاد می­شود و سیستم قادر است زمان و هزینه­های ماشین­کاری و نرخ ماشین­کاری را محاسبه نموده و مشخص کند که کدام یک از فرایندها از نظر زمان و هزینه و نرخ     ماشین­کاری مناسب­تر است. سیستم این امکان را بهئ طراح می­دهد تا با تغییر پارامترها و ابعاد و تلرانس­های طراحی زمان ماشین­کاری و هزینه­های آن را بهینه نماید. این سیستم می­تواند ظرف کمتر از 30 ثانیه قابلیت ساخت طراحی را ارزیابی نموده و بازخوردها و توصیه­های لازم را برای اصلاح و بهبود پارامترهای طراحی به طراح بدهد و به این صورت طراح بتواند طرح خود را از نظر زمان و هزینه و کیفیت و راندمان تولید بهینه نماید. همچنین سیستم توصیه­های لازم را به مهندس ساخت برای انتخاب بهینه پارامترهای ماشین­کاری مانند سرعت، میزان تغذیه، نرخ پیشروی ابزار، سیکل زمان و هزینه ماشین­کاری و راه­هایی که می­شود هزینه­های ماشین­کاری را کاهش داد برای هر یک از فرایندهای فوق­الذکر می­نماید تا بین کیفیت مورد نیاز و راندمان تولید بتواند بالانسی بر قرار نماید. این سیستم آموزشی هوشمند می­تواند جهت بهینه کردن پارامترهای طراحی و ساخت استفاده نمود. همچنین می­توان به عنوان یک سیستم مشاوره هوشمند مورد استفاده طراحان و مهندسان تولید قرار گیرد. همچنین با استفاده از سیستم اموزشی هوشمند ساخته شده می­توان نیروهای جدید تازه کار در بخش طراحی و ساخت را آموزش داد. جهت ارزیابی کارایی سیستم آموزشی هوشمند، خروجی این سیستم با روش تجربی مقایسه شده و صحت پیشبینی آن از نظر زمان و هزینه ماشین­کاری و نرخ پیشروی ابرار در مقاله نشان داده شده است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Developing an Intelligent Education System for Design and Manufacturability Evaluation

نویسنده [English]

  • M.S. Amalnik

Faculty of Engineering, University of Qom, Qom, Iran

چکیده [English]

This paper addresses the concept and development of an intelligent education system  in concurrent engineering environment based on object oriented technique for conventional processes such as drilling, reaming, boring, slot drilling, end milling, tapping, etc. and unconventional processes such as electrochemical machining (ECM), electro-discharge machining (EDM), electrochemical spark machining (ECSM), ultrasonic machining (USM) and wire-electro-erosion-dissolution machining (Wire-EEDM) for manufacturability evaluation and generation of alternative processes for improving product design. A feature based approach for acquiring design specification is used. Then the system automatically generates all possible alternative processes and estimates machining (cutting) cycle time, and cost, penetration rate, and efficiency for each process.  The system works as a process of iterative redesign which suggests a way of using process information to find ways of reducing the cost of each design feature. It also estimates the optimum operation parameters for each process which balances between quality and manufacturing efficiency and to give designers immediate feedback about parameters such as the machining cycle time, cost and quality, efficiency and so on for optimization and give some advice to manufacturing engineers related to feed, speed, penetration rate, machining cycle time and cost saving.
 

کلیدواژه‌ها [English]

  • Intelligent Education System
  • Design and Manufacturability Evaluation
  • Generating Alternative Processes
  • Optimization

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