Defect Classification
Meaning ~ System for grouping product errors into severity levels that define if a batch is accepted, reworked, or scrapped based on risk and contract limits.
Dimensional Tolerance Verification
Meaning
Metrology procedures measure the physical size of manufactured parts to ensure they match the engineering drawings. Performing dimensional tolerance verification allows the quality team to check if the components fit together during final assembly. It applies only to measurable geometric features and not to surface finish or color.
Measurement Technique
Inspectors use calipers and coordinate measuring machines to collect precise physical data. During dimensional tolerance verification, the temperature of the measurement lab is kept constant to prevent metal expansion. This control ensures that the readings are accurate and repeatable across different shifts.
Operational Gate
Production batches must pass this evaluation before they are approved for the next stage of assembly. When dimensional tolerance verification fails, the parts are held in a quarantine area for engineering review. This prevents bad parts from moving through the factory and wasting labor, which keeps the total cost of production aligned with the initial budget estimates.
Contractual Liability
Engineering specifications define the allowed boundaries of size variation for every critical part. If a supplier fails to perform dimensional tolerance verification, they risk shipping parts that are physically impossible to assemble. The supplier must pay for the sorting and the replacement of these unusable pieces.