Abdurrahman REİS, Kubilay ASLANTAŞ, Ekrem ÖZKAYA

Kemik Delme İşlemlerinde Farklı Kesme Koşullarının ve Kesme Parametrelerinin Kesme Sıcaklığı Üzerindeki Etkisinin Araştırılması

Bu çalışmada, kemik delme işleminde farklı takım geometrisinin, takım malzemesinin, farklı kesme koşullarının ve parametrelerinin kesme sıcaklığı üzerindeki etkisi deneysel olarak araştırılmıştır. Delme işlemi sırasında nekroza neden olan veya olabilecek olan tüm unsurlar belirlenmeye çalışılmıştır. Deneylerde 12 saat önce canlı olan sığırın femur kemikleri kullanılmış ve delme bölgesine çok yakın noktalarda kesme sıcaklığı deneysel olarak tespit edilmiştir. Elde edilen sonuçlara göre, kesme esnasında kullanılan devir sayısı kesme sıcaklığını en çok etkileyen kesme parametresidir. İlerlemenin artması kesme sıcaklığında düşüşe neden olmaktadır. Gagalama tekniği ile delik delinmesi, kesme bölgesindeki sıcaklığın önemli ölçüde azalmasına katkıda bulunmaktadır. Gagalama tekniği kesme sıcaklığını önemli ölçüde düşürmektedir. Düşük debide uygulanan salin sıvısı matkap kanallarının tıkanmasına sebep olurken, 0,04 l/dk debide uygulanan salin sıvısı kesme sıcaklığını düşürmektedir. AISI-316L malzemeden üretilmiş matkap uçlarında daha düşük kesme sıcaklıkları gözlemlenmiştir. Aynı zamanda matkap geometrisinin etkilerine yer verilmiştir.

Anahtar Kelimeler:

Kemik delme, osteonekroz, kesme sıvısı, kesme sıcaklığı

Investigation of The Effect of Different Cutting Conditions and Cutting Parameters on Cutting Temperature in Bone Drilling

In this study, the effect of different tool geometry, tool material, different cutting conditions and parameters on the cutting temperature was investigated experimentally. All factors that may cause necrosis during the drilling process were tried to be determined. Femur bones of the cattle that were alive 12 hours ago were used in the experiments and the cutting temperature was determined experimentally at the points very close to the puncture site. According to the results obtained, speed is the parameter that most affects the cutting temperature. Increasing feed rate causes a decrease in cutting temperature. Drilling holes with pecking technique contributes to a significant reduction in temperature in the cutting zone. The pecking technique significantly reduces the cutting temperature. Saline fluid applied at low flow causes the drill flutes to clog while saline fluid applied at the flow rate of 0.04 l/min lowers cutting temperature. Lower cutting temperatures were observed in drill bits made of AISI-316L material. Also, the effects of drill geometry are included.

Keywords:

Bone drilling, osteonecrosis, cutting fluid, cutting temperature,

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