Trdnost in trajnost stola sestavljenega s 3D natisnjenimi vezmi

Gruden, Peter (author), Kitek Kuzman, Manja (mentor), Kariž, Mirko (comentor)

Oblikovali, konstruirali in natisnili smo 3D veznike s katerimi bi skupaj z enostavnimi lesenimi elementi lahko sestavili sodoben stol za domačo uporabo. Vezniki so bili oblikovani tako, da bi stol lahko sestavil vsak posameznik, brez posebnih orodij. Veznike smo natisnili iz akrilonitrilo butadien stirena (ABS), za lesene dele stola pa smo uporabili bukovino. Osnovna izvedba veznikov in sestavljenega stola ni zadostila zahtevam standarda SIST EN 12520:2010, saj je pri obremenjevanju naslona prišlo do porušitve veznika. S pomočjo programa SolidWorks smo zasnovali nove izvedbe veznikov in s simulacijami obremenitev določili najboljšo izvedbo. Izboljšana verzija veznika je prestala obremenitve po zahtevah standarda, vendar pa je prišlo do loma v lepilnem spoju les-veznik. Pri testiranju trajnosti veznika, je prišlo do porušitve veznika. Stol ni prestal testa trajnosti. Ugotovili smo, da je mogoče izdelati stol s 3D natisnjenimi vezniki, vendar je potrebno še optimizirati tiskanje in lepljenje veznikov na lesene elemente, da bo ustrezal zahtevam standarda SIST EN 12520:2010.

• Language: Slovenian
• Keywords: 3D tiskanje, stol, veznik
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [P. Gruden]
• Year: 2017
• PID: 20.500.12556/RUL-92694
• UDC: 684.43:004.356.2
• COBISS.SI-ID: 2785673
• Publication date in RUL: 28.06.2017

Secondary language

• Language: English
• Title: Strength and durability of a chair with 3D printed connectors

Abstract

We designed, constructed and printed a 3D binding, which together with simple wooden elements, could be used to make a modern chair for home use. The connectors have been designed so that the chair can be assembled by anyone, without the need for special tools. The bindings are printed from acrylonitrile butadiene styrene (ABS), the wooden parts of the chair are made with beech. The basic version of bindings and composite chair did not meet the requirements of SIST EN 12520: 2010. At the backrest burdening test the binding suffered a critical failure. Using SolidWorks program we designed new bindings and load simulations to determine the best implementation. Improved version of the bindings has passed the load according to the requirements of the standard, but there was a fracture in the adhesive joint les-connector. In the testing of the durability of the binding, the binding sufferd critical failure. The chair did not pass the test durability. We have found that it is possible to create a chair with 3D printed bindings, but it is still necessary to optimize the printing process and affixing connectors on the wooden elements, that they will suit the requirements of SIST EN 12520: 2010.

• Keywords: 3D printing, chair, bindings