Optimization of Vertical Machining Parameters of DIN 1.0038 Steels Using Hybrid Taguchi Based Grey-Fuzzy Algorithm in CNC Pocket Milling Process

Öz

In CNC pocket milling, surface quality, material removal rate and production time are critical parameters. However, setting the optimum parameters related to the process is problematic due to the presence of many factors. In this study, a hybrid grey-based fuzzy algorithm with a Taguchi L16 orthogonal array experimental design was used to determine the optimum results by combining factors such as cutting speed, feed rate, cutting depth and cutting path strategy. The optimum results were found as 0.36 µm surface roughness, 10 s machining time and 120 mm³/min material removal rate. These results were achieved by using 1500 rpm cutting speed, 2.0 mm/rev feed rate, 1.25 mm cutting depth and zigzag cutting path strategy. In the analysis made using the Analysis of Variance (ANOVA), it was concluded that the process was affected by feed rate, cutting depth, cutting speed and cutting path strategy, respectively.

Anahtar Kelimeler

• CNC machining
• Grey fuzzy algorithm
• Milling
• Optimization
• Surface roughness

CNC Cep Frezeleme Prosesinde Hibrit Taguchi Tabanlı Gri-Bulanık Algoritma Kullanılarak DIN 1.0038 Çeliklerinin Dikey İşleme Parametrelerinin Optimizasyonu

Öz

CNC cep frezelemede, yüzey kalitesi, talaş kaldırma oranı ve üretim süresi kritik parametrelerdir. Ancak prosese ilişkin optimum parametrelerin ayarlanması, çok sayıda faktörün bir arada bulunması nedeniyle sorun teşkil etmektedir. Bu çalışmada; kesme hızı, ilerleme oranı, kesme derinliği ve kesme yolu stratejisi gibi faktörler birleştirilerek optimum sonuçları belirlemek için bir Taguchi L16 ortogonal dizi deneysel tasarımına sahip hibrit gri tabanlı bulanık algoritma kullanılmıştır. Optimum sonuçlar 0,36 µm yüzey pürüzlülüğü, 10 sn işleme süresi ve 120 mm³/dk talaş kaldırma oranı şeklinde bulunmuştur. Bu sonuçlara 1500 rpm kesme hızı, 2,0 mm/dev ilerleme oranı, 1,25 mm kesme derinliği ve zikzak kesme yolu stratejisi kullanılarak ulaşılmıştır. Varyans Analizi (ANOVA) yöntemi kullanılarak yapılan analizlerde prosesin sırasıyla ilerleme oranı, kesme derinliği, kesme hızı ve kesme yolu stratejisinden etkilendiği sonucuna ulaşılmıştır.

Anahtar Kelimeler

• CNC işleme
• Gri bulanık mantık
• Frezeleme
• Optimizasyon
• Yüzey pürüzlülüğü

Kaynakça

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