LeanÀº ºñºÎ°¡°¡Ä¡ È°µ¿À» ÇÕ¸®ÀûÀ¸·Î ÁÙ¿© ³ª°¡´Â »ó½ÄÀûÀÎ È°µ¿ÀÌ´Ù
Lean 6¥òÈ°µ¿ÀÇ ÀÌÇظ¦ À§ÇØ ÇÊ¿äÇÑ ¿ë¾î´Â ´ÙÀ½°ú °°´Ù
1) Lead time ¹× Process speed : Little¡¯s Law
- Lead Time = Cycle Time + Waiting Time
- Cycle Time : ÀÛ¾÷ÀÚ°¡ ÀÚ½ÅÀÇ Process¸¦ one cycle ¿Ï·áÇϴµ¥ ¼Ò¿äµÇ´Â ½ÇÁ¦ ½Ã°£
2) WIP (work-in-process), TIP(things-in-process)
- Things = °í°´À¸·Î ºÎÅÍ ¿äû¹ÞÀº ÀÏ, Process°¡ ÁøÇàµÇµµ·Ï ´ë±â»óÅ¿¡ ÀÖ´Â ÀÛ¾÷
(ȸ½ÅÇØ ÁÖ¾î¾ß ÇÏ´Â ÀüÈ, ¿Ï¼ºÇؾßÇÏ´Â º¸°í¼ µî¡¦)
- WIP=TIP, °³ÀÎ ¾÷¹«ÀÇ ¼ö ȤÀº Ã¥»óÀ§¿¡ ȤÀº PC Program»ó¿¡ ´ë±âÇÏ°í ÀÖ´Â ÀÓ¹«ÀÇ ¼ö
(¿¹ : »ý»ê model ¼ö,¡¦..)
3) Delays / Queue time : ½ÇÇàµÇ±â ÀüÀÇ ´ë±â »óÅ¿¡¼ ÁÙÀ» ¼ÀÖ´Â »óÅÂÀÇ ÀÏ.
4) ºÎ°¡°¡Ä¡ ÀÛ¾÷(Value-added Work), ºñºÎ°¡°¡Ä¡ÀÛ¾÷(Non-value-added Work)
°í°´ÀÇ °üÀú¿¡¼ °¡Ä¡¸¦ Ãß°¡ÇØ ÁÖ´Â ÀÏÀ» ºÎ°¡°¡Ä¡¾÷¹«(Value Added Work)À̶ó°í Çϸç,
°í°´ÀÌ ¿ì¸®°¡ Á¦°øÇÏ´Â ¹°Ç°À̳ª ¼ºñ½º¿¡ ´ëÇÏ¿© ±â²¨ÀÌ ºñ¿ëÀ» ÁöºÒÇÏ°Ú´Ù°í »ý°¢µÈ´Ù¸é
Value Added WorkÀ̶ó°í ÆÇ´ÜÇÑ´Ù.
±×·¸Áö ¾Ê´Ù¸é ºñºÎ°¡°¡Ä¡ ¾÷¹«(Non Value Added Work)À̶ó°í Á¤ÀÇÇÑ´Ù.