When an out-of-control condition appears in an SPC chart, engineers need to understand what was different about the affected production.
The measured result may be available immediately, while the relevant incoming-material batch, process route, equipment history, or logistics information remains in another system. Collecting this context manually can slow down the investigation.
This Work Smarter video shows how the LineWorks SPACE Charts Work-in-Progress Plug-in connects SPC results with available manufacturing history. It gives engineers additional context for investigating whether incoming materials, process steps, or equipment conditions contributed to the deviation.
Why SPC Measurements Alone May Not Explain a Quality Deviation
SPC charts help engineers identify process behavior that requires attention. However, the measurement itself may not explain which production condition contributed to the result.
An investigation may need to consider:
- which incoming-material batch was consumed;
- where the material came from;
- which production steps were completed;
- which equipment was used; and
- whether similar results appeared in previous production.
When these records are stored separately, engineers must assemble the investigation dataset before they can compare possible contributing factors.
How the WIP Plug-in Adds Manufacturing Context to SPC
The LineWorks SPACE Charts WIP Plug-in extends SPC analysis with available MES, logistics, material, and production-history data.
Four Types of Context for a Manufacturing Investigation
| Connected context |
What engineers can review |
| Incoming-material context |
Material batch, source, supplier information, or relevant material properties available in the connected records. |
| Process history |
The production steps and route followed by the affected unit or lot. |
| Equipment history |
The equipment used during relevant stages of production. |
| Historical comparisons |
Similar quality results and production conditions from previous lots or periods. |
The available analysis depends on the identifiers and production history captured by the connected systems.
Use Connected Data to Narrow the Investigation
Adding manufacturing context to an SPC result helps engineers identify conditions that deserve closer examination.
For example, they may compare affected production with other lots that used the same incoming material, followed the same route, or ran on the same equipment. This can help define the investigation population and support earlier containment of similarly exposed material.
The comparison provides evidence for further investigation. It does not automatically establish that a material, supplier, process step, or equipment condition caused the deviation. Engineering review and appropriate confirmation are still required.
Explore LineWorks SPACE Chart Plugin
FAQ
Q: Why connect incoming-material history with process and quality data?
A: A quality signal may be visible in SPC while the relevant supplier batch, material property, process route, or equipment history sits in another system. Connecting those records reduces the time engineers spend assembling an investigation dataset.
The LineWorks SPACE Charts WIP Plug-in adds available MES, logistics, and material context to quality analysis so teams can compare affected production with its manufacturing history.
Q: How does the WIP Plug-in help narrow a root-cause investigation?
A: Engineers can relate quality results to factors such as process steps, material source or purity, and equipment usage, then compare patterns across historical production.
This helps identify conditions that deserve deeper analysis and supports faster containment of similarly exposed material or lots. The relationship is evidence for investigation, not automatic proof that a particular material or supplier caused the deviation.
Q: What data links are needed to trace a quality issue back to incoming material?
A: The analysis needs consistent identifiers connecting the production unit or lot with consumed material batches, supplier information, process steps, equipment, timestamps, and quality measurements.
Substitutions, splits, blends, rework, and genealogy changes must also be represented. If those links are incomplete, the plug-in can only analyze the context that is available and may miss relevant exposure.
Q: How should an engineering team validate this analysis workflow?
A: Reconstruct a completed investigation and check whether the plug-in retrieves the same material and process population, preserves units and timestamps, and lets engineers move from a trend to the underlying records.
Test mixed lots, rework, reused equipment, specification changes, and missing genealogy. Define how a suspected relationship is confirmed before supplier action or process disposition is taken.
