DEVELOPMENT PROCESS OF SPIN CASTING MACHINEudFOR SOUVENIR PRODUCTION

摘要

Universitas Atma Jaya Yogyakarta’s presentudattention to reduce dependency of relying massudproduction on subcontractor has encouraged the researchudof application spin casting technology. Spin castingudtechnology has known as rapid tooling technology withudsome advantages in running mass production andudcapability in achieving intricate design.udThe present spin casting machine was evaluated andudredesigned to enhance the reliability of producing goodudquality of souvenirs made from tin. The evaluation wasudstarted by constructing Functional DecompositionudDiagram. Afterward, the decomposed part list wasudclassified to its critical function based on FunctionudAnalysis. Failure Modes Effects Analysis (FMEA) wasudperformed to evaluate failures of current machine. Thoseudfailures were become input for redesign process.udMechanical Design Procedure, Grid Analysis, and TreeudDiagram were performed during redesign process. Someuddefects were found during experimental works of “UAJY”udkeychain using the new spin casting machine. The Causeudand Effect Diagram was performed to find best solutionudto solve related problems.udBy the end of the research, spin casting machineudwith dimension 500mm x 600mm x 862mm; operating speed atud460 rpm; maximum silicone rubber dimension Ø300mmx40mm ;udelectricity power 373 W and UAJY keychain product wereudobtained. The production time is 12,15 minutes and theudmachine cost is IDR 3,529.6/hour.