Tooling Amortization and Quality Control Protocols for Micro Hardware Runs
Micro hardware runs require amortizing soft tooling over exact batch counts while using one hundred percent optical metrology to catch thermal drift defects.
Optical Inspection Protocol
Meaning
Standardized procedures govern the use of camera systems to detect defects in manufactured goods without physical contact. An optical inspection protocol defines the lighting conditions, camera resolution and software algorithms used to verify the quality of a part. These rules ensure that the inspection is consistent across different production shifts and factory locations.
Image Acquisition
Positioning of the light source is the most important factor for highlighting surface scratches or cracks. In an optical inspection protocol the angle of incidence must be fixed to ensure that shadows do not hide critical features. The system must also account for changes in ambient light that could interfere with the sensor readings.
Algorithm Validation
Software must be trained to distinguish between a harmless surface variation and a functional defect. A robust optical inspection protocol includes a set of master samples with known flaws to test the accuracy of the detection logic. These samples are run through the system periodically to confirm that the sensitivity has not drifted over time.
Error Handling
Systems must have a clear process for dealing with parts that the camera flags as questionable. The optical inspection protocol specifies whether a human operator must review the images or if the part is automatically diverted to a scrap bin. This prevents defective items from reaching the next stage of the assembly process.
Detailed logs of these events help engineers identify the source of the production errors.