Automotive Piston Online Visual Inspection System

The company is a well-known domestic and international automotive piston manufacturer, serving primarily renowned international and domestic automobile and internal combustion engine OEMs by providing high-quality products.

The piston manufacturing industry involves metallurgy, casting, and mechanical machining, with a focus on automated production, and demands high precision in mechanical machining.

As the automotive industry develops, the requirements for product safety continue to increase. The OEMs, with a serious commitment to safety, have stringent quality control standards for their suppliers. Even though this manufacturer is a top-tier enterprise, it still faces a significant number of quality claims every year.

This manufacturer maintains a rigorous quality control process and has already incorporated vision-based inspection methods into several critical automated production processes, primarily focusing on precision measurement during machining. However, another essential aspect of product quality control, surface inspection of piston products, relies on manual visual inspection. This manual inspection no longer meets the speed and precision requirements for modern production cycles, and the extensive workforce of inspectors adds to the factory's cost pressures.

In response to the customer's requirements, the development team designed an online inspection system tailored to the customer's needs. This system is capable of detecting common defects on piston surfaces, such as scratches, wrinkles, dents, dimples, bright spots, and cracks, achieving an inspection efficiency of 4-5 pieces per second. The core technology relies on image analysis and algorithm development for analyzing the strong reflections of the metallic products under structured lighting.