Production Confirmation

Production confirmation is a very detailed consulting activity used for one of two purposes:

  1) Validate product quality at concept, design, and/or pre-production phase, and

  2) Troubleshoot existing product issues.

 Tolerance analyses are performed at different stages for different reasons throughout the product development process.

Product Confirmation illustration


As products progress from concept through manufacturing, more product and process definition becomes available and many of the analysis assumptions can be replaced with what is really going to happen.  For example, assumed part quality in the design phase is replaced with actual capability data. So, when it is time to release a product into manufacturing, or a released product has problems, the CETOL6σ model represents an “as-manufactured” predictive model.

Production Confirmation utilizes the “as-manufactured” CETOL 6σ model to understand and qualify key features in the assembly.   Sensitivity data defines the critical part features.  This information is used to prioritize troubleshooting or data collection activity based on the potential impact of each dimension.  Assembly fixtures, inspection methods, and GD&T interpretation can be targeted for review.  Any deviations outside of the model are quickly assessed for impact on product quality. Production Confirmation occurs when part capabilities, assembly process, and inspection methodologies are validated to be in accordance with the as-manufactured CETOL 6σ model.

How it works:

  • Establish non-disclosure agreement
  • Review product status and requirement(s)
  • Visit customer location to get detailed understanding of:
  • Product status
  • Assembly requirement(s)
  • Dimensional /Quality management process
  • Review of drawings
  • Review of assembly process
  • Review of inspection capabilities
  • Develop statement of work for Production Confirmation
  • Conduct CETOL 6σ analyses off-site or on-site
  • Obtain capability data for critical-to-quality (CTQ) features
  • On-site review of analysis results followed by detailed drawing and dimensional management review for CTQ features.
  • Report findings, make recommendations, mark-up drawings as needed.
  • Establish measure(s) of success
  • Measure improvement resulting from changes where appropriate