Routing Roll-Up
The Process Item Operation Roll-up is a key function for users who have extensive routings that have reasonable run and setup standards and yield factors. The Roll-Up function will extract this data from the routing and transfer it to the Process Item Detail table for subsequent use by the kanban system for sizing.
Process Item Operation Roll-Up
The processing in this program attempts to determine the cycle, setup and work time as well as the accumulated yield for each process item in the selected process. The basic logic is:
• Cycle time. The system estimates the cycle time as the longest run time among the operations in the Start/End Op range for the process item.
• Setup time. The system estimates the setup time as the sum of the setup times for operations in the Start/End Op range).
• Work time. The system estimates the work time as the sum of the run times in the Start/End Op range.
• Yield. The system estimates the yield of a process item based on the yield per operation through all operations from the Start Op range through the balance of the routing. In effect the yield that is calculated is the cumulative yield through to the end of the loop.
Process Item Operation Roll-Up Audit Report
An example of the audit report for the Process Item Operation Roll-Up is shown above. It displays the current and the revised values for setup time, cycle time, work time and yield.
