Functions of PPC:
Function related to material selection.
Function related to selection of method.
Function related to selection of machines and equipment.
Routing. * Estimating.
Loading. *Scheduling.
Dispatching. *Expediting.
Inspection. *Evaluating.
Scheduling:
i. Scheduling may be defined as the fixation of time and date for each operation as well as it determines the sequence of operation to be followed.
ii. Scheduling involves establishing the amount of work to be done and the time when each element of work will start and complete.
iii. The objectives of scheduling are to fulfill the delivery date promised earlier, minimize the idle time and maximize the utilization of resources.
iv. Scheduling is the last step in production planning. At this stage detailed plans are made which specify for each machine, the time schedule at which different products will be processed on these machines.
Routing:
i. Routing is the selection of route or path over which each part is to be travel during the process of transformation from raw material to finished product.
ii. It determines as to what work is to be done and where and how it will be done and who will do it.
iii. The objectives of routing are to utilize machines and men at their fullest capacity.
iv. Route sheet is important tool of this function which includes operation number, description of operation, machine used, tools and gauges used and standard time for any particular operation.