Additive Manufacturing via Vat Photopolymerization

Abstract

Vat photopolymerization (VP), one of the additive manufacturing technologies, is spreading rapidly due to its many advantages. SL (Stereolitography) technology as the first manufacturing method has been used for prototyping and new product development. In the following years, with the development of DLP (Digital Light Processing) and CLIP (Continuous Light Interphase Printing) technologies, it has been started to be used in the production of plastic parts for low volume applications. VP technologies provides lower roughness, better dimensional accuracy than other plastic addtive manufacturing methods. The fact that VP technologies allow direct manufacturing of complex parts makes their usage widespread in areas such as aviation, automotive, healthcare, dendistry and jewellery. With the use of materials specially developed for the application, VP technologies are used in areas such as lost wax casting, rapid tooling, orthodontic molds and drilling guides. Open source cheap desktop 3D printers has been introduced to the market after the commercial patent of SL technologies expires. In this way, VP technologies has entered our homes. In this study, detailed information about VP technologies and their application areas has been revealed.

Havuz Fotopolimerizasyonu (HFP) ile Eklemeli İmalat

Abstract

Eklemeli imalat teknolojilerinden biri olan havuz fotopolimerizasyonu (HFP) sahip olduğu birçok avantaj nedeniyle hızla yaygınlaşmaktadır. İlk keşfedilen eklemeli imalat yöntemi olan SL (Stereolitography) keşfedildiği yıllarda prototip imalatı ve ürün geliştirme amaçlı kullanılmaktaydı. Sonraki yıllarda DLP (Digital Light Processing) ve CLIP (Continuous Light Interphase Printing) teknolojilerinin geliştirilmesi ile az adetli uygulamalara yönelik plastik parça imalatında da kullanılmaya başlamıştır. HFP teknolojileri diğer plastik eklemeli imalat teknolojilerine göre daha düşük yüzey pürüzlülüğü ve daha yüksek boyutsal hassasiyet sunmaktadır. HFP teknolojilerinin kompleks parçaların direkt imalatına izin vermesi, havacılık, otomotiv, sağlık, dişçilik, kuyumculuk gibi alanlarda kullanımlarını yaygınlaştırmaktadır. Uygulamaya özel geliştirilmiş malzemelerin kullanımı ile HFP teknolojileri hassas döküm, üretime yardımcı ekipmanlar, ortodonti diş kalıpları ve implant delme aparatları gibi uygulamalarda kullanılmaktadır. SL teknolojisinin ticari patentinin geçerliliğini yitirmesi ile açık kaynak kodlu ucuz masa üstü yazıcılar piyasaya sürülmüştür. Bu sayede HFP teknolojisi evlerimize kadar girmiştir. Bu çalışmada HFP teknolojileri ve kullanım alanları hakkında detaylı bilgiler verilmiştir.

Keywords

• Eklemeli İmalat
• Havuz Fotopolimerizasyonu
• SLA
• DLP
• CLIP

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