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Journals / Politeknik Dergisi / 2026 / Cilt: 29 Sayı: 5

Geometric Design, Additive Manufacturing, and Investigation of Contact Characteristics of a Logarithmic Spiral Spur Gear Pair

Logaritmik Spiral Düz Dişli Çiftinin Geometrik Tasarımı, Katmanlı İmalatı ve Temas Karakteristiklerinin İncelenmesi

Mehmet Yazar(Çanakkale Onsekiz Mart Üniversitesi)0000-0003-3999-3233
Pages
1–12
Publication Date
2026-09-11
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The findings indicate that the logarithmic spiral spur gear geometry offers distinct contact characteristics that could serve as an alternative to traditional involute gears and can be successfully manufactured using additive manufacturing methods.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the parametric design, additive manufacturing, and contact path characteristics of logarithmic spiral spur gear pairs, which fall under the category of non-circular gears, have been examined.
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Key Findings & Data:Within the scope of this study, a parametric design algorithm has been developed to create logarithmic spiral spur gear profiles.
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Conclusion & Impact:The findings indicate that the logarithmic spiral spur gear geometry offers distinct contact characteristics that could serve as an alternative to traditional involute gears and can be successfully manufactured using additive manufacturing methods.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Dairesel olmayan dişliler · logaritmik spiral dişli · parametrik tasarım

Abstract

In this study, the parametric design, additive manufacturing, and contact path characteristics of logarithmic spiral spur gear pairs, which fall under the category of non-circular gears, have been examined. Within the scope of this study, a parametric design algorithm has been developed to create logarithmic spiral spur gear profiles. The two-dimensional gear profiles obtained using the developed algorithm have been converted into three-dimensional solid models, and physical prototypes have been produced using the FDM (Fused Deposition Modeling) additive manufacturing method with PLA (polylactic acid) filament. The kinematic behavior of the gear pair was analyzed in a CAD program to determine the contact points formed at different angular positions, and the contact path was obtained by connecting these points. The analysis results have shown that the contact path in logarithmic spiral spur gears exhibits a curved rather than a linear character and that the contact is continuous along the tooth surface. This may contribute to a wider contact area and a more balanced load distribution. The findings indicate that the logarithmic spiral spur gear geometry offers distinct contact characteristics that could serve as an alternative to traditional involute gears and can be successfully manufactured using additive manufacturing methods. This study aims to contribute to the literature by adopting a comprehensive approach to the design, manufacturing, and contact analysis processes of logarithmic spiral spur gears.

Özet

Bu çalışmada, dairesel olmayan dişli kategorisinde yer alan logaritmik spiral düz dişli çiftlerinin parametrik tasarımı, katmanlı imalatı ve temas yolu karakteristikleri incelenmiştir. Çalışma kapsamında, logaritmik spiral düz dişli profillerinin oluşturulabilmesi amacıyla parametrik bir tasarım algoritması geliştirilmiştir. Geliştirilen algoritma yardımıyla elde edilen iki boyutlu dişli profilleri, üç boyutlu katı modellere dönüştürülmüş ve FDM (Fused Deposition Modeling) tipi katmanlı imalat yöntemi ile PLA (polilaktik asit) filament kullanılarak fiziksel prototipler üretilmiştir. Üretilen dişli çiftinin kinematik davranışı CAD ortamında analiz edilerek farklı açısal konumlarda oluşan temas noktaları belirlenmiş ve bu noktaların birleştirilmesiyle temas yolu elde edilmiştir. Analiz sonuçları, logaritmik spiral düz dişlilerde temas yolunun doğrusal değil eğrisel bir karakter sergilediğini ve temasın diş yüzeyi boyunca süreklilik gösterdiğini ortaya koymuştur. Bu durumun, temasın daha geniş bir alana yayılmasına ve yük dağılımının daha dengeli gerçekleşmesine katkı sağlayabileceği değerlendirilmiştir. Elde edilen bulgular, logaritmik spiral düz dişli geometrisinin geleneksel involüt dişlilere alternatif olabilecek farklı temas karakteristikleri sunduğunu ve katmanlı imalat yöntemleri ile başarılı bir şekilde üretilebildiğini göstermektedir. Bu çalışma, logaritmik spiral düz dişlilerin tasarım, üretim ve temas analizi süreçlerini bütüncül bir yaklaşımla ele alarak literatüre katkı sağlamayı amaçlamaktadır.

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Cite This Article

Yazar, M. (2026). Geometric Design, Additive Manufacturing, and Investigation of Contact Characteristics of a Logarithmic Spiral Spur Gear Pair. Politeknik Dergisi, Cilt: 29 Sayı: 5, 1–12. https://doi.org/10.2339/politeknik.1916658

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