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Lean

Kamon Treetampinij
นิยาม


 ทำาสิงจำาเป็น
      ่
ในเวลาจำาเป็น
 เท่าที่จำาเป็น
จำาเป็นคือ อะไร?



จำาเป็น คือ มีคณค่าต่อลูกค้า
               ุ
สารธารแห่งคุณค่า
                            Value Stream
Requirement   Value added
 Gathering

                              Value added
                  Design

                                             Value added
                              Construction

                                                  Quality    Value added
                                                 Assurance

                                                               Deployment
ทุกงานมีต้นทุน


     กำาไร = ราคาขาย – ต้นทุน

มูลค่าเพิม = คุณค่าต่อลูกค้า – ค่าจ้าง
         ่
Flow - การไหลอย่างต่อเนื่อง

 นักวิงมาราธอนหมุนแขนขาเป็นวงกลม
      ่
 ทำาให้เกิดโมเม็นตัมเป็นการวิงที่เหนื่อย
                             ่
น้อยที่สด สายธารแห่งคุณค่า ถ้าไหลอย่าง
        ุ
 ต่อเนื่องก็จะเกิดกำาไรสูงสุด(มูลค่าเพิม
                                       ่
                 สูงสุด)
อุปสรรค ของการไหลอย่างต่อเนื่อง

• Muri – Overburden

• Mura – Unevenness

• Muda – Waste
Muri - การใช้งานเกินพอดี
เมื่อทำางานหนักเกินไปจะให้ผลผลิตที่ลดลง



                Output




                             Effort


                         Takt time
Mura - ความไม่สมำ่าเสมอ
เต่ากับกระต่าย




                 Heijunka
Muda – ความสูญเปล่า
1. Overproduction
2. Waiting time
3. Transportation and handling
4. Useless and excess inventories
5. Production process
6. Useless motions
7. Scrap and defects
Overproduction
ทำาเกิน = สูญเปล่า
ฟีเจอร์มากมาย แต่ใช้จริงแค่นิดเดียว = สูญเปล่า



                 Just In Time
Waiting time
รอคอย = สูญเปล่า
QA ต้องรอนานกว่าจะได้เอามา test = สูญเปล่า



                 Pull System
Transportation and handling
ส่งต่อไปมา = สูญเปล่า
เดี๋ยวก็ให้คนโน้นทำาเรื่องนี้เดี๋ยวก็สงต่อให้คนนัน
                                      ่          ้
  ทำา = สูญเปล่า
ต้องคอยทำารายงานส่งต่อให้หัวหน้า = สูญเปล่า

                  Nemawashi
                       +
                Genchi Genbutsu
Useless and excess inventories
ทำาเสร็จแล้ว ไม่มีคนมารับต่อ = สูญเปล่า
ทำา design doc เป็นเล่ม แต่ไม่มีคนพอที่จะทำา
  ทั้งหมดในครั้งเดียว = สูญเปล่า



                  AB Control
Production process
ขั้นตอนการทำางานมาก = สูญเปล่า
จะเอาโค้ดขึ้น server ได้ต้องทำาเรื่องขอ = สูญ
   เปล่า



            Hansei + 5Why + Kaizen
Useless motions
ถ้าเครื่องทำาได้ ให้คนทำา = สูญเปล่า
ให้ tester มานังคลิ๊ก = สูญเปล่า
               ่



                     Jidoka
Scrap and defects
ส่งต่อของเสีย = สูญเปล่า
มีบั๊กส่งให้ test = สูญเปล่า



                    Poka-Yoke
                        +
                      Andon
จบ

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