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chan0192
I'm trying to find an equation to calculate out the ideal optimum level of WIP in between the process i.e. buffer? What is it based on? For both with variability and without variability cases. Thank you so much!!!
Hi my process is a needle part production. The production line is quite a long line. However, I have to determine amount of buffer in between each process so that the inventory can flow through the system. Machines are not nesscessary running all the time just that the inventory must be flowing in the system. I'll have to construct the ideal VSM first then later introduce all the variability i.e. downtime and etc. Then used to compare with the current VSM to evaluate performance and find opportunities to improve.Hello, there!
What kind of process do you have? Let's assume you have a three stage process. Are you wanting to know the level of WIP in stage 2 so that stage 3 is never idle? Can stage 1 always provide adequate materials to stage 2?
How long does the work take in stage 1, stage 2, and stage 3?
Sorry for all the questions. I'm just trying to get a feel for your process.
I'm trying to find an equation to calculate out the ideal optimum level of WIP in between the process i.e. buffer? What is it based on? For both with variability and without variability cases. Thank you so much!!!
anonymous said:You mentioned 258 unites between station 2 and 3, so do you mean those units need to be built up to be stored for next operation? so how would you do that if there is no resource set up or station set up to build that WIP? where is this WIP coming from? if station 2 is taking long? a little confused with assigning kanban levels...could you clarify this for me?
anonymous said:Thanks, yes it does clarify it, but i have one question regarding the data tab on the excel file. the column "build qty's", what does that represent? the hours extra to build the buffer stock? so this would determine what overtime or if an extra shift is required to catch up with the imbalance?
anonymous said:there are some processes that require this buffer stock (kanban i would think its called) so if so, then we may need to implement overtime. For purchase components, i would use a 2 bin system with a replenishment cycle to cover any shorts that occur. Am i on the right track here?
You are adding to a thread., the last post being of Sept 2008....SWIP = (Manual time + Auto time) / TAKT Time.
try this formula.