Polyhedrika

    A still picture of a Value Stream Map may not fully explain the behavior of the Value Stream. In some cases we need to understand its dynamic behavior. To do this we will convert our Excel Value Stream Map into a Monte Carlo Simulator. In Excel Value Stream Map we saw how a complex Value Stream could be mapped using Excel. We saw the importance of mapping feedback loops such as test-repair loops because they often become the bottleneck for the complete value stream. In this situation not all items flow along all branches so we need to calculate the % flowing along each branch. This enabled us to calculate the cycle for each workstation based on the staffing. Finally we were able to calculate the ideal staffing to balance the line: insure no workstation cycle is above the average inter-arrival time (takt time). This we did using Solver. Value Stream Map: Still Picture Vs Dynamic Behavior Mapping the current value stream with a VSM is a good starting point to understand how...

  Value Stream Maps graphically represent process flow as it is actually performed. Excel Value Stream Map - YouTube VSM is typically built following a visit to Gemba (where things are really happening) in order to depict what is really going on (rather than the theoretical process described in standards and procedures). This approach and VSM concepts are excellently described in " Learning to See " by Mike Rother To follow the value stream you can follow a product along the manufacturing line or a customer order along the administrative value stream like in    staple yourself to an order Horizontal Vs Vertical Flow Value Stream Maps are typically designed to flow horizontally left to right. When a value stream is complex it becomes difficult to view the whole picture: it may require several pages and this makes it difficult to follow.. Making the VSM vertically allows us to visualize complex value stream in a single page.   Post-its on Brown Paper Another common pra...