Lean management, del 2 Flashcards
Vad är just in time system?
Kanban systems. Alternate to push systems and based on pull system.
Används för att minimera lager förbättra effektivitet
Vad är push systems?
Push system produces finished-goods inventory in advance of customer demand, using a forecast of sales.
Vad är pull systems?
System where employees at a given operation go to the source of the required parts and withdraw units as they need them
What is kanban?
Flag or a piece of paper that contains all relevant information for an order
− Part number
− Description
− Process area used
− Time of delivery
− Quantity available
− Quantity delivered
− Production quantity
What is a kanban card?
Circulated within the system to initiate withdrawal and production items through the production process. Simple visual control.
Nämn ett operating system med kanban
Two-card Kanban JIT operating system
Formula för kanban card required
k = (d (p + w) + (1 + a) ) / C
K = number on kanban cards in the operating system
d = average daily production rate as determined from the master production schedule
w = waiting time of Kanban cards in decimal fractions of a day
C = capacity of a standard container
a = Policy variable determined by the efficiency of the process and its workstations and the uncertainty of the workplace
Relationen mellan antalet kanban cards och work-in-process inventory
Number of cards are directly proportional to the amount of work-in-process inventory, meaning that the amount can be reduce through reduced lead times (p or w), lower a values or other improvements
Vad är JIT in service organizations?
Helped firms with reducing order cycle time, office space requirements and inventory investments. Also to increase productivity and profits.
Lean techniques can be detrimental to customer services that are based on human interactions.
Vad är takt time?
maximala tiden som får användas för att producera en enhet för att möta kundens efterfrågan
