INVESTIGATION OF THE EFFECT OF BUILT-UP EDGE ON CHIP MORPHOLOGY AT THE CUTTING EDGE DURING TURNING OPERATION

Yıl 2024, ERKEN GÖRÜNÜM, 1 - 1

Kemal Yaman , Zafer Tekiner

Öz

Investigating the mechanism of Built-Up Edge (BUE) formation, which increases tool wear and leads to a decrease in surface quality and tool life, is a critical aspect in engineering applications. A detailed examination of this mechanism holds great importance for extending tool life, reducing workpiece surface roughness, and ultimately lowering tool and production costs. Currently, theoretical, experimental, and numerical studies on this formation mechanism are still ongoing. In this research, the effects of cutting speed on the BUE formation mechanism and the resulting chip morphology were examined in detail, while keeping the cutting depth and feed rate constant. Experimental studies have shown that cutting speed directly influences the formation of BUE and the resulting chip morphology. The extent of this effect, along with details related to chip morphology and BUE formation, was analyzed by comparing scanning electron microscope images. Additionally, the relationship between cutting force values read from the machine monitor during cutting and cutting speed was also investigated. This research highlights the potential to achieve a longer tool life, high-quality workpiece surfaces, and cost-effective production through the optimization of parameters in the workpiece machining process

Anahtar Kelimeler

Cutting speed, buil-up edge, chip morphology, tool wear, surface roughness

TORNALAMA OPERASYONU SIRASINDA OLUŞAN TAKIM UCU YIĞINTI KENARIN TALAŞ ŞEKLİNE ETKİSİNİN İNCELENMESİ

Öz

Takım aşınmasını arttırarak iş parçası yüzey kalitesinin ve takım ömrünün azalmasına sebep olan yığıntı kenar (ing. Buil-Up edge) oluşum mekanizmasının incelenmesi, mühendislik uygulamalarında kritik bir konudur. Bu mekanizmanın ayrıntılı bir şekilde ele alınması, takım ömrünün arttırılması, iş parçası yüzey pürüzlülüğünün düşürülmesi ve nihayetinde takım ve üretim maliyetlerinin düşürülmesi açısından büyük öneme sahiptir. Şu anki aşamada, bu oluşum mekanizması üzerindeki teorik, deneysel ve sayısal çalışmalar halen devam etmektedir. Bu araştırmada, kesme derinliği ve ilerleme hızı sabit tutularak kesme hızının yığıntı kenar oluşum mekanizması ve işleme sonrası oluşan talaş morfolojisine olan etkileri detaylı bir şekilde incelenmiştir. Gerçekleştirilen deneysel çalışmalar, kesme hızının yığıntı kenar oluşumunu ve oluşan talaş morfolojisini doğrudan etkilediğini göstermiştir. Bu etkinin boyutu, talaş morfolojisi ve yığıntı kenarın oluşumuyla ilgili detaylar, çekilen tarama elektron mikroskopu fotoğrafları üzerinden karşılaştırılarak analiz edilmiştir. Ayrıca, kesme sırasında tezgâh monitöründen okunan kesme kuvveti değeriyle kesme hızının ilişkisi de incelenmiştir. Bu araştırma, iş parçası işleme sürecindeki parametrelerin optimize edilmesiyle daha uzun takım ömrü, yüksek kaliteli iş parçası yüzeyleri ve düşük maliyetli üretim sağlama potansiyelini ortaya koymaktadır.

Anahtar Kelimeler

Kesme hızı, yığıntı kenar, talaş morfolojisi, takım aşınması, yüzey pürüzlülüğü

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