Ali Talip PINARBAŞI, Mustafa Kemal KÜLEKÇİ, Uğur EŞME, Cem BOĞA

Optimization of the Effect of Processing Parameters on Surface Roughness and Cutting Energy in CNC Milling of Al-7075 Material

In this study, it is intended to determine the most suitable process parameters for surface roughness and cutting energy of the 7075 series aluminum material in dry environment conditions by using Taguchi method in CNC milling. The process parameters were determined as, cutting speed, feed rate and cutting depth and the effects of these parameters on surface roughness, current flow through the grid and the energy consumed were examined. As a result, optimum process parameters were determined and the results were analyzed by graphs. It was observed that the most effective parameter on the surface roughness was the feed rate, while the most effective parameter on the current drawn from the network was the cutting depth. As a result of the experiments, the best surface roughness value was found to be 0.39 μm and the lowest current value was 0.9 A. In addition, considering the determined current amount and processing time, the lowest energy amount consumed was calculated as 7089.28 J.

Al-7075 Malzemenin CNC Frezelenmesinde İşlem Parametrelerinin Yüzey Pürüzlülüğüne ve Kesme Enerjisine Etkisinin Optimizasyonu

Bu çalışmada, CNC frezeleme prosesinde 7075 serisi alüminyum malzemenin kuru ortam şartlarında yüzey pürüzlülüğü ve kesme enerjisi için en uygun işlem parametrelerinin Taguchi yöntemi kullanılarak belirlenmesi amaçlanmıştır. İşlem parametreleri ilerleme hızı, kesme hızı ve kesme derinliği olarak belirlenmiş olup bu parametrelerin yüzey pürüzlülüğüne, şebeke üzerinden çekilen akım miktarına ve tüketilen enerji üzerindeki etkileri incelenmiştir. Sonuçta optimum işlem parametreleri belirlenmiş ve sonuçlar grafiklerle analiz edilmiştir. Yüzey pürüzlülüğüne en çok etki eden parametre ilerleme hızı iken, şebekeden çekilen akıma en çok etki eden parametrenin kesme derinliği olduğu gözlemlenmiştir. Deneyler sonucunda en iyi yüzey pürüzlülük değeri 0,39 μm, en düşük akım değeri 0,9 A olarak bulunmuştur. Ayrıca, belirlenen akım miktarı ve işlem süresi göz önüne alınarak tüketilen en düşük enerji miktarı 7089,28 J olarak hesaplanmıştır.

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