Parmak Frezelerin Yeniden Bileme Sonrasi Performanslarinin Değerlendirilmesi Üzerine Bir Araştirma

Year 2022, Volume: 24 Issue: 70, 247 - 262, 17.01.2022

Salih Korucu , Yasin Hacıbektaşoğlu

https://doi.org/10.21205/deufmd.2022247023

Abstract

Bu çalışmada, talaşlı imalatta yaygın olarak kullanılan parmak frezelerin, bilenerek tekrar kullanılmaları halindeki performansları araştırılmıştır. Bu amaçla, CNC dik işleme merkezinde, AISI 1050 imalat çeliği üzerinden ilk kez kullanılmış olan iki farklı çapta HSS parmak frezeler ile AISI D2 (2080) soğuk iş takım çeliği üzerinden de yine ilk kez kullanılmış olan iki farklı çapta karbür parmak frezeler ile talaş kaldırma işlemleri yapılmıştır. Talaş kaldırma deneyleri, dört farklı kesme hızı, dört farklı ilerleme ve dört farklı kesme derinliği uygulanarak yapılmıştır. Sonrasında, kullanılan bu parmak frezeler, orijinal takım geometrisi dikkate alınarak yeniden bilenmiş ve aynı şartlarda talaş kaldırma deneyleri tekrarlanarak performansları, yeni takımların performansları ile mukayeseli olarak değerlendirilmiştir. Genel olarak bilenmiş takımlardaki aşınma miktarlarının yeni takımlara göre daha yüksek olduğu gözlenmiştir. HSS takımlarda bileme işleminin işleme performansına herhangi bir olumsuz etkisi gözlenmemiştir. Yekpare sementit karbür takımlarda özellikle yüzey kalitesi açısından küçük çaplı takımlar için yeniden bilemenin olumsuz bir etkisi gözlenmezken çaptaki artışa paralel olarak yüzey kalitesindeki beklentilerin izlenmesi kaydı ile yeniden bileme işlemi önerilebilir.

Keywords

Kesme Kuvveti, İşleme performansı, Yeniden Bileme, Yüzey Pürüzlülüğü, Takım Yanak Aşınması

Supporting Institution

Gazi Üniversitesi Bilimsel Araştırma Projeler Birimi

Project Number

07/2012-51

Thanks

Yazarlar, desteklerinden ötürü Gazi Üniversitesi Bilimsel Araştırma Projeler Birimi'ne teşekkür eder

A Research on The Evaluation of Performances After Re-Sharpening of The End Mills

Abstract

In this study, the performances of end mills used widely in machining were investigated in case of their reuse by sharpening. For this purpose, at the CNC vertical machining center, slot milling processes were carried out with HSS end mills (used once) on the AISI 1050 manufacturing steel having two different diameters and with carbide end mills (again used once) on the AISI D2 (2080) cold work tool steel having two different diameters. Machining experiments were made by using four different cutting speeds, four different feed and four different cutting depths. These end mills, afterwards, were re-sharpened by considering their original tool geometry and the machining experiments were repeated at the same conditions and their performances were evaluated in comparison with the performances of the new tool. In general, wear amounts in the sharpened tools were observed to be higher with respect to the new tools. In the HSS tools, no adverse effect of sharpening process was observed on the machining performance. In the carbide tools, especially from the point of surface quality for the tools having small diameter there is no adverse effect of re-sharpening and re-sharpening can be recommended with the condition of observing the surface quality in parallel to the increase in diameter.

Keywords

Cutting Force, Machining Performance, Re-Sharpening, Surface Roughness, Tool Flank Wear

Project Number

07/2012-51

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