Investigation of Zero Adjustment and Rolling Speed Effects on Product Quality in Flat Die Thread Rolling Process

Abstract

In this study, the effects of zero adjustment accuracy and operation speed on product quality were investigated through experimental and numerical analyses in the flat die thread rolling process. Experiments were conducted on M30 bolts made of 42CrMo4 steel, and corresponding finite element simulations were performed using Simufact software. The findings revealed that even slight deviations in the zero adjustment caused distortions in the thread profile. Moreover, at higher operation speeds, the loss of synchronization between the dies led to increased burr formation and surface irregularities. The results emphasize the critical importance of precise adjustment and the selection of an optimal operation speed to improve thread quality in the flat die rolling process.

Keywords

• Thread Rolling
• Numerical Simulation
• Finite Elements
• Zero Setting
• Process Speed

Düz Ovalama Kalıbı ile Diş Çekme İşleminde Sıfır Ayarının ve Operasyon Hızının Ürün Kalitesine Etkilerinin İncelenmesi

Abstract

Bu çalışmada, düz kalıp yöntemiyle gerçekleştirilen diş ovalama sürecinde sıfır ayarının doğruluğu ile operasyon hızının ürün kalitesi üzerindeki etkileri deneysel ve sayısal analizler yoluyla araştırılmıştır. 42CrMo4 malzemesinden üretilmiş M30 cıvatalar üzerinde yürütülen deneyler ile Simufact yazılımında gerçekleştirilen sonlu elemanlar simülasyonları karşılaştırmalı olarak değerlendirilmiştir. Bulgular, sıfır ayarındaki küçük sapmaların dahi diş formunda bozulmalara yol açtığını; ayrıca yüksek hızlarda kalıplar arasında senkronizasyonun bozulmasıyla çapaklanma ve yüzey düzensizliklerinin arttığını göstermiştir. Sonuçlar, diş ovalama prosesinde kaliteyi artırmak için hassas ayar ve optimum hız seçiminin kritik önem taşıdığını ortaya koymaktadır.

Keywords

• Diş Ovalama
• Simülasyon
• Sonlu Elemanlar
• Sıfır Ayarı
• Operasyon Hızı

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