Edit Yields¶
You can enter Good Part Yield and Final Yield information, to estimate the cost of waste in the current manufacturing process, and in all downstream processes.
Use Yield Values¶
Yield value calculations use production volume and the number of scrap parts at the process and routing level. Examples of scrap parts are damaged, broken, or out of tolerance parts.
Adding yield calculations typically increases the material, direct labor, and direct overhead in each process, but can produce more accurate results for your analysis.
Yield calculations begin at the end of the routing, using the Total Production Volume as the starting point, and working upstream, process by process:
Set Yield Values¶
To view the Good Part Yield column for a component:
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Go to the Part Details tab, and click Table View > Select Table View > All Data
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In the Cost Object panel, expand all the processes.
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In the Manufacturing Info panel, expand Process Group, and scroll to the right. The Good Part Yield column is just to the right of the Labor and Overhead Rate columns.
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Enter override values as necessary for specific processes.
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For example, you could enter “
98” for the Hammer process row and “99” for the Trim process row. -
The Final Yield and Lifetime Scrap Parts columns update as you enter overrides. You should not enter Good Part Yield values in any field except a process field, even if the field is editable.
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The Lifetime Scrap Parts column sums up scrap parts at each node, but only processes are included in the total at “Current”, not nodes. The following modified example shows which values are in the total.
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Assume that you change the Trim process to 100% GPY, but change the Band Saw process under the Saw node to 99% GPY.
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The total scrap parts in this example changes to “0” for the Trim process and “11” for the Band Saw process, which is also reflected on the Saw node row. However, only the process row “11” counts toward the Current total, not the node row “11”.
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An easy way to distinguish between node rows and process rows is that process rows always have labor and overhead rate values, while these columns are blank for node rows.
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Yield Calculations¶
The following are yield calculations:
Downstream Num of Scrap Parts = Num. of Scrap Parts + Downstream Num of Scrap Parts
(This calculates the sum of all scrap downstream (to the right in the block diagram above), not including the current process. This value stores the scrap value for the next upstream process.)
The following are calculations affected by yield: