ANALYSIS AND PROPOSED IMPROVEMENT OF CNC MILLING MACHINE EFFECTIVENESS USING OVERALL EQUIPMENT EFFECTIVENESS (OEE) APPROACH: CNC Milling, OEE, Produktivitas, Fishbone Diagram, Efektivitas Mesin. Prosiding Seminar Nasional Ilmu Sosial dan Teknologi (SNISTEK), v. 8, n. 1, p. 167–174, 18 Jul.2026.