Regression Modeling Of Cutting Parameters’ Effect To Cutting Forces And Hole Surface Qualities In Drilling Of Dievar Hot Work Tool Steel

In this study, cutting moments, surface roughness, dimensional accuracy and circularity deviation values were investigated during drilling on Dievar degree of hot work tool steels with various drill bits. The experiments, was completed with Ø16 mm diameter uncoated carbide drill bits and TiAlN coated self-reamed carbide drill bits using coolant fluid on vertical machining center. In experiments, feed rate 0,16 mm/rev and the cutting speed 36, 40, 44, 48 m/min rates were used. The results were modeled by the method of linear regression and polynomial regression curve. Then they were compared with values equal significance. At the same time by analysis of variance, the cutting speed and drill type were investigated on the results of axial feed force, cutting torque, surface roughness, dimensional accuracy and circularity the deviation.

Dievar Sýcak Ýþ Takým Çeliðinin Delinmesinde Kesme Parametrelerinin Kesme Kuvvetleri Ve Yüzey Kalitesine Etkisinin Regresyon Analiziyle Modellenmesi

Bu çalýþmada sýcak iþ takým çeliklerinden Dievar derece çeliði üzerinde çeþitli matkaplar ile delik delme esnasýnda meydana gelen eksenel kuvvetler, kesme momentleri, yüzey pürüzlülükleri, ölçü tamlýðý ve dairesellikten sapma deðerleri araþtýrýlmýþtýr. Deneyler dik iþleme tezgâhýnda soðutma sývýsý ile Ø16 mm çaplarýnda kaplamasýz karbür matkap ve kendinden raybalý TiAlN kaplamalý matkap kullanýlarak yapýlmýþtýr. Deneylerde ilerleme hýzý 0,16 mm/dev, kesme hýzý ise 36, 40, 44, 48 m/dak hýzlarý kullanýlmýþtýr. Çýkan sonuçlar doðrusal regresyon metodu ile modellenmiþ ve polinom regresyon eðrisi eþitliði anlamlýlýk deðerleri mukayese edilmiþtir. Ayný zamanda varyans analizi yapýlarak kesme hýzý ve matkap tipinin eksenel ilerleme kuvveti, kesme momenti, yüzey pürüzlülüðü ölçü tamlýðý ve dairesellikten sapma deðeri sonuçlarý üzerine etkileri incelenmiþtir.