quan ly xay dung nguyen duy long ch03 production system design compatibility mode cuuduongthancong com

Thi t K Th ng S n Xu t co ng c om Production System Design ng th an ©2010 b i Nguy n Duy Long, Ti n S cu u du o i dung Khái ni m v h th ng s n xu t thi t k h th ng s n xu t y (Push) Kéo (Pull) m (buffer) Các s o thi t k h th ng s n xu t Các b c thi t k ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong.com https://fb.com/tailieudientucntt ích c a h th ng s n xu t Cung c p s n ph m, khi… c i giá tr (trao khách hàng th h c n h n nó), c ti u lãng phí (gi cho vi c cung c p giá tr ), Theo i s hồn h o (ph n u khơng ng ng ng tinh g n (lean ideal)) co ng t lý t c om m thi u nh ng th khơng c n ng th an ©2010 b i Nguy n Duy Long, Ti n S cu u du o Lý thuy t v qu n lý h th ng s n xu t Thi t k Ho ch nh Ho t Ki m soát ng i ti n Hi u ch nh ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong.com https://fb.com/tailieudientucntt Kh i m c a thi t k Stodgy th ng Understand the “Physics” of the Task Design Dynamic Make Design Make c om Design Systems to Support Lean Ideal co ng Conform Organization and Contracts ng th an ©2010 b i Nguy n Duy Long, Ti n S du o u qu a s bi n i cu u Chu k dài (long cycle time) Công n ng lãng phí (wasted capacity) ng su t (m c s n xu t) b m t (lost throughput) ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong.com https://fb.com/tailieudientucntt y (push push)) kéo (pull pull)) th ng y lên ti n gi i phóng cơng vi c gi a phân n (tr m) công vi c (workstations), khi, co ng c om th ng kéo cho phép gi i phóng cơng vi c n n t ng tình tr ng c a th ng (system status) ng th an ©2010 b i Nguy n Duy Long, Ti n S du o trí h th ng l p t cu u WS2 WS WS1 WS4 Hàng i vào (incoming queues) WS5 (QC) ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong.com https://fb.com/tailieudientucntt t s thu t ng co ng c om Production system: h th ng s n xu t Workstations: phân n (tr m) công vi c Processes: qui trình (x y h th ng) Demand (aka load or work load): nhu c u Capacity: công n ng, công su t Inventory (materials or information): t n tr (v t t hay thông tin) Buffer: m (t n tr , công n ng, hay th i gian) Production control: ki m soát s n xu t Push: y Pull: kéo ng th an ©2010 b i Nguy n Duy Long, Ti n S ng ng c a Ohno u du o m–S cu “Bi n” t n tr n ch t ng Lên tiên Kích th c lơ l n Phân ph i a nhà cung c p Máy móc h ng Thay i thu t n v giao ti p Ngu n: Ph ng theo Northrop Grumman Integrated Systems ©2010 b i Nguy n Duy Long, Ti n S 10 CuuDuongThanCong.com https://fb.com/tailieudientucntt Thi t k th ng s n xu t: t: o Throughput (TH): m c s n xu t – c xác nh b i th i gian x lý t i nút c chai (bottleneck) co ng c om Cycle Time (CT): th i gian c n m t n s n ph m qua h th ng = t ng th i gian qui trình + t ng th i gian hàng ch 11 ng th an ©2010 b i Nguy n Duy Long, Ti n S cu u du o Thi t k th ng s n xu t: t: o Work-in-Process (WIP): s nv s n ph m ch a hoàn thành h th ng Takt Time (TT): n ng su t (TH) kh p v i c nhu c u cho s n ph m Ghi chú: TH=WIP/CT ©2010 b i Nguy n Duy Long, Ti n S 12 CuuDuongThanCong.com https://fb.com/tailieudientucntt c tiêu c a thi t k n xu t th ng co ng c om Gia t ng n ng su t (TH) kh p i m c nhu c u; nh b ng Takt Time Gi m chu k (CT) Gi m WIP n m c c n thi t trì n ng su t (TH) Gi m tài nguyên c n thi t 13 ng th an ©2010 b i Nguy n Duy Long, Ti n S th ng du o Các b c thi t k n xu t Gi m bi n i, r i ph i ch n lo i, v trí, kích th c m (buffer) v i s bi n i Gi m th i gian thi t l p, r i gi m kích th c m (batch) mà tr c ây r t t n gi m Gi m th i gian x lý (prosess) có th t ng n ng su t (TH) Gi m th i gian không nút c chai, nh m gi m thêm chu k cu u nút c chai, ©2010 b i Nguy n Duy Long, Ti n S 14 CuuDuongThanCong.com https://fb.com/tailieudientucntt Các b c thi t k n xu t th ng Phân b qui trình tinh gi n xuyên su t tr m công vi c m i tr m có th i gian x lý (processing duration) gi ng nhau, r i tái c u trúc m t ng ng Phát tri n cơng nhân a k n ng có th t lu ng cân b ng (balanced flow) b ng cách xoay x gi a tr m công vi c g n bù cho vi c khơng có kh n ng phù h p v i th i gian x lý trung bình cho s bi n i quanh tr trung bình ó co ng c om 15 cu u du o ng th an ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong.com https://fb.com/tailieudientucntt ... (system status) ng th an ©2010 b i Nguy n Duy Long, Ti n S du o trí h th ng l p t cu u WS2 WS WS1 WS4 Hàng i vào (incoming queues) WS5 (QC) ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong. com. .. Nguy n Duy Long, Ti n S cu u du o Lý thuy t v qu n lý h th ng s n xu t Thi t k Ho ch nh Ho t Ki m soát ng i ti n Hi u ch nh ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong. com https://fb .com/ tailieudientucntt... u Chu k dài (long cycle time) Công n ng lãng phí (wasted capacity) ng su t (m c s n xu t) b m t (lost throughput) ©2010 b i Nguy n Duy Long, Ti n S CuuDuongThanCong. com https://fb .com/ tailieudientucntt