3 Rencana Perkuliahan Asal, tujuan & definisi JIT Keuntungan, perbandingan dgn sistem konvensional, dan skema JITKonsep 5S dan persiapan sumberdaya manusiaSistem Tarik dan Sistem DorongSistem KanbanProduksi Lot KecilReduksi Waktu Set-upSMED dan Teknik Reduksi Waktu Set-upPemeliharaan dan perbaikan mesin dan peralatanTeknologi kelompok dan sel manufakturScreening, pokayoke & jidokaLeveling productionSinkronisasi dan penyeimbangan proses
4 PENGANTAR History and Origins of JIT Definition and Objectives of JIT JIT Benefits and Success FactorsComparison: Conventional vs JIT SystemsJIT Scheme
7 Origins of JIT (cont’d) Taiichi Ohno and Shigeo ShingoGeographical and cultural rootsJapanese objectives“catch up with America” (within 3 years of 1945)small lots of many modelsJapanese motivationJapanese domestic production in 1949 – 25,622 trucks, 1,008 carsAmerican to Japanese productivity ratio – 9:1Era of “slow growth” in 1970's
8 Waste: Time, Material & Resources Bad designMachine downtimeUnreliable supplierPoor qualityInefficient layout
9 Waste EliminationOhno devised a new system of production based on the elimination of waste.Waste was eliminated by:just-in-time - items only move through the production system as and when they are neededautonomation - automating the production system so as to include inspection - human attention only being needed when a defect is automatically detected whereupon the system will stop and not proceed until the problem has been solved
10 JIT Objectives Ultimate objectives: Zero Inventory. Zero lead time. Zero failures.Flow process.Flexible manufacture.Eliminate waste.
11 JIT DefinitionJust-in-time (JIT) is defined in the APICS dictionary as “a philosophy of manufacturing based on planned elimination of all waste and on continuous improvement of productivity”. It also has been described as an approach with the objective of producing the right part in the right place at the right time (in other words, “just in time”).
12 JIT Benefit SummaryImprovement Aggregate percentage (3-5 years) Annual percentage Manufacturing cycle time reduction 80-90% 30-40% Inventory reductions: Raw materials Work-in-process Finished goods Labor cost reductions: Direct Indirect Space requirements reduction Quality cost reduction Material cost reduction