بررسی تحلیلی تاثیر سرعت دورانی و نرخ پیشروی بر افزایش دما در سوراخکاری استخوان فک

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، مهندسی مکانیک، دانشگاه تربیت دبیر شهید رجایی، تهران

2 دانشجوی دکتری، دانشگاه تربیت دبیر شهید رجایی، تهران

3 دانشیار، مهندسی مکانیک، دانشگاه تربیت دبیر شهید رجایی، تهران

4 استادیار، مهندسی مکانیک، دانشگاه آزاد اسلامی، واحد تهران شمال

چکیده

در حین سوراخ کردن استخوان فک، دما افزایش می­یابد و باعث آسیب حرارتی استخوان شود. بنابراین، بررسی افزایش دما حین سوراخ‌کاری استخوان ضروری به نظر می­رسد. با توجه به دشوار بودن بررسی تجربی افزایش دما در سوراخکاری فک، پیش‌بینی حرارت منتقل شده به استخوان در جراحی، سبب انتخاب صحیح فاکتورهای مؤثر بر دما می­شود. لذا در این تحقیق برای اولین بار با استفاده از روش تفاضل محدود و ضرایب واینر، دمای استخوان فک در حین فرایند سوراخکاری، پیش‌بینی و تأثیر سه فاکتور ورودی نرخ پیشروی، سرعت دوران و زاویه­ی نوک ابزار بررسی شد. تغییرات سرعت دوران ابزار در بازه­ی 200، 400، 800، 1200 و 2500 دوربردقیقه، نرخ پیشروی 50، 60، 90 و 120 میلی‌متر بر دقیقه و زاویه­ی نوک ابزار 70 تا 118 درجه در نظر گرفته شد. بر اساس نتایج به‌دست‌آمده، با افزایش سرعت دوران ابزار و کاهش نرخ پیشروی، دما افزایش می­یابد. همچنین با افزایش زاویه­ نوک از 70 به 118 درجه، دما 10 درجه سانتی­گراد افزایش می­یابد. درنهایت، استفاده از نرخ پیشروی mm/min 120 و mm/min 90 به همراه  سرعت دورانی از 200 تا rpm 2500 و مته با زوایای نوک 70 و 90 درجه پیشنهاد می­شود. استفاده از ماده خنک­کننده، دمای سوراخکاری را تا ˚C9 کاهش می‌دهد.

کلیدواژه‌ها

عنوان مقاله [English]

Analytical investigation of influence of rotational speed and feed rate on temperature elevation in jawbone drilling

نویسندگان [English]

  • Mohammad Meghdad Fallah 1
  • Masoud Mohamadi 2
  • Mohammadmorad Sheikhi 3
  • Ehsan Shakouri 4
  • Valiollah panahizadeh 1
1 Department of Mechanical Engineering, Shahid Rajaee University, Tehran, Iran
2 Department of Mechanical Engineering, Shahid Rajaee University, Tehran, Iran
3 Department of Mechanical Engineering, Shahid Rajaee University, Tehran, Iran
4 Department of Mechanical Engineering, Islamic Azad University, North Tehran Branch, Tehran, Iran
چکیده [English]

During the drilling of the jawbone, the temperature could increase and cause thermal injury in the bone. So, it appears necessary to investigate the temperature rise during bone drilling. Due to the difficulty of experimental study of temperature increase during the jawbone drilling, predicting the heat transferred to the bone during surgery, leads to the correct selection of factors affecting the temperature. Therefore, in this paper, for the first time, using the finite difference method and Wiener coefficients, the temperature of the jawbone during drilling was predicted and the influence of different drilling parameters on the temperature rise was evaluated. Spindle speed were 200, 400, 800, 1200 and 2500 rpm, feed rate 50, 60, 90 and 120 mm/min and drill point angle 70, 90 and 118 degrees. Results showed that an increase in spindle speed and decrease in feed rate caused an increase in bone temperature. Also, with an increase in drill point angle from 70 to 118 degrees, the temperature increases by 10 degrees Celsius. Finally, the following combination of parameter values is suggested: feed rate of 90 to 120mm/min, spindle speeds of 200 to 2500rpm and point angle of 70˚ and 90˚. With irrigation, the decrease in temperature was almost equal to 9˚C.

کلیدواژه‌ها [English]

  • Jawbone Drilling
  • Thermal necrosis
  • Finite difference

مراجع

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مهندسی ساخت و تولید ایران
دوره 9، شماره 1
فروردین 1401
صفحه 54-62

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