A manufacturer of aluminium cabinets (built-in cabinets invehicles) delivers 50 cabinets per day to a customer. Thefluctuation is 25 pieces per week. The customer demand must be 100%fulfilled.
The processing time per cabinet is 20 minutes in machining (3-shiftoperation possible), 24 h for 55 cabinets in coating (incl. dryingtime) and 0.5 h in assembly incl. quality inspection. In assemblyup to 4 workstations can work in parallel. After assembly there isa buffer of up to 25 cabinets. A buffer of one daily quantityshould be available before each processing step. One cabinet perday is sorted out due to quality defects in assembly. There are noother quality problems.
There is space on a load carrier for the parts of up to 15 cabinets(without necessary C parts). The load carriers are loaded aftermachining and then serve as load carriers until assembly.
For your calculations, assume 20 working days / 4 weeks per monthand an equally distributed working time of 40h/week.
a) How many Kanban are needed for the system?
b) What is the maximum stock in circulation?
c) How would you provide standard parts, e.g. screws and hinges(classified as CXK in the supply concept) in the assembly? Explainyour decision.
