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AISI 1050 ÇELİĞİNİN KARBÜR TAKIMLARLA FREZELENMESİNDE OLUŞAN TİTREŞİMLERİN İNCELENMESİ VE İSTATİSTİKSEL ANALİZİ

INVESTIGATION OF VIBRATIONS AND STATISTICAL ANALYSIS IN MILLING OF AISI 1050 STELL WITH CARBIDE TOOLS

Journal Name:

  • Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2012

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, the effects of machining parameters on the vibrations which occur in machine tool, cutting forces, workpiece surface roughness are investigated in the milling operations. In the experiments, 132, 200, 308 m/min cutting speed, 0.05, 0.1, 0.15, 0.2 mm/tooth feed rate, 1, 1.5 mm cutting depth and 1,2,4 cutting edge number are used as machining parameters. With these machining parameters, chip has removed on the AISI 1050 steel material which is dimension 100x50x20 mm. 72 test were carried out in this study. Values of vibrations, cutting forces and surface roughness have been measured during the machining operations. After, to determine the effects to results of machining parameters and in order to compose a mathematical model analysis of variance (ANOVA) and quadratic multiple regression have been performed. According to the experiment results, it has been seen that with the increasing of cutting edge number, cutting depth and feed rate, then all other results have also increased. While, increasing of cutting speed is affecting vibration acceleration level negatively, it gives a positive effect to cutting force and surface quality. Increasing of vibration acceleration levels has caused the rising of surface roughness. As a result, it has been defined that vibration has a negative effect on the surface roughness.
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Abstract (Original Language): 
Bu çalışmada, frezeleme operasyonlarında, işleme parametrelerinin, takım tezgâhında oluşan titreşimlere, kesme kuvvetlerine ve iş parçası yüzey kalitesine etkisi araştırılmıştır. Deneylerde işleme parametreleri olarak 132, 220, 308 m/min kesme hızı, 0,05, 0,1, 0,15, 0,2 mm/tooth ilerleme oranı, 1, 1,5 mm kesme derinliği ve 1, 2, 4 adet kesici uç kullanılmıştır. Bu işleme parametreleri ile 100x50x20 mm ebatlarında AISI 1050 deney malzemesi üzerinden talaş kaldırılmıştır. Toplam 72 adet deney yapılmıştır. Talaş kaldırma işlemleri esnasında, titreşimler, kesme kuvvetleri ve yüzey pürüzlülük değerleri ölçülmüştür. Daha sonra işleme parametrelerinin sonuçlara etkisini belirlemek ve matematiksel bir model oluşturmak amacıyla varyans analizi (ANOVA) ve ikinci dereceden çoklu regresyon analizi yapılmıştır. Deney sonuçlarına göre; kesici uç sayısı, kesme derinliği ve ilerleme artışı ile tüm sonuçlarda da artış olduğu görülmüştür. Kesme hızının artması titreşim ivme seviyesini olumsuz etkilerken, kesme kuvveti ve yüzey kalitesine olumlu katkıda bulunmuştur. Artan titreşim ivme seviyeleri, yüzey pürüzlülük değerlerinin de artmasına neden olmuştur. Dolayısıyla titreşimin yüzey pürüzlülüğüne olumsuz bir etkisi olduğu tespit edilmiştir.
FULL TEXT (PDF): 
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