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آشنایی مقدماتی با اتوماسیون و دستگاه های CNC مرتبط با رشته مکانیک و رشته های مرتبط
چکیده: CNC مخفف حروف اول کلمات ((Control Numerical Computerبه معنای کنترل عددی کامپیوتر می باشد که در ایران این ماشینها به اختصارCNC خوانده می شوند. دستگاههایCNC ٬ دستگاههای هستند که حرکت کلیه محورها و عملیات ماشین کاری آنها توسط کامپیوتر کنترل می شود بدین معنا که کلیه دادهها و اطلاعات با استفاده از کامپیوتر و امکانات حافظه ای آن ابتدا پردازش وسپس توسط ریز پردازنده ها(Micro Processor )به علائم الکتریکی(pulse) تبدیل و به موتور محورهای محرکه منتقل می شوند.نسل اول این ماشینها NC بودند بدین مفهوم که فاقد کامپیوتر بوده و دستگاه طبق منطقی خاص٬ از جمله نوار یا کارتهای پانچ شده کار می کرده است .به طور مثال برای حرکت سوپورت دستگاههای معمولی این امر توسط اپراتور با چرخاندن ورنیه سوپورت صورت می گیرد ولی در سیستمهای NC این امر توسط کارت مخصوصی که در دستگاه جا گذاری می شد انجام می گرفت و اکنون این عمل در دستگاههای CNC توسط کدهای مخصوصی G) کد و Mکد )که در برنامه نوشته می شود صورت می گیرد .بدنه سخت افزاری دستگاههای CNC تفاوتهای چندانی با بدنه دستگاههای معمولی ندارد آنچه این دو را از هم متفاوت سازد باشد اصلی ترین بخش یک دستگاه CNC ٬ کنترلر آن می باشد که معمولا دستگاهها از هر نوعی ( تراش ، فرز، سنگ و ...) که باشند با نوع کنترلشان شناخته می شوند و آموزشهای اپراتوری و خدمات پس از فروش آن عموماً بر پایه سیستم کنترل استوار می باشد.
آنچه در این مقاله می خوانید :
آشنایی با دستگاههای CNC
اجزای اصلی ماشینهای CNC
تفاوتهای اساسی ماشینهای NC و CNC
دانستنیها ومهارت های لازم برای اپراتورCNC
مزایا و معایب دستگاه های CNC
آشنایی با دستگاههای CMM
...
فرمت فایل: DOCX (ورد 2007) قابل ویرایش تعداد صفحات: 36
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نویسنده : ziba
تاریخ : 
