Planeacion De La Produccion

Finite scheduling: Its advantages and pitfalls
Finite scheduling is very useful in the simulation of operations in the shop floor in order to improve productivity. The power or utility of finiteloading is huge because here we can see very close how things would behave in a real situation.
To use finite scheduling effectively requires three key elements:
* Understanding of how finitescheduling works.
* A high level of data accuracy to generate valid information.
* Understanding of how to manage and make decisions based on the finite scheduling information to achieve on-timedeliveries as well as improved productivity and throughput.
To know more about finite scheduling we may treat it asan operation scheduling technique that schedules either forwards,backwards, or acombination of both, while observing capacity limits.
The backward scheduling logic simply takes the order due date from MRP and starts subtracting the day or fractions of day from the order due date. Thesetup and run times re extracted from the routing. The setup time is taken as is and the run time is multiplied by the order quantity.
Today long lead times are not accepted-and rightfully so. Thebest way to reduce lead time is to rearrange the factory and create flow processes. The flow process eliminates all the separate elements required to move product through multiple operations. To usefinite scheduling in the batch environment requires understanding of each of the lead time elements.
Most of the times queue the largest contributor to lead time. The queue time will vary day by daybased on the amount of work going through the work center.
When you assume this, It can be avoided by simulating the actual jobs scheduled through the work center and actually calculating the amount ofqueue that will be in front of the work center when a specific job is scheduled to arrive.
At the end of each working process there is another time “movement”. It is often assumed the move time...