Application and Solution
In the field of precision manufacturing, the appearance quality of product parts directly determines the reliability and service life of end products. For the following part, tiny defects such as silver dot loss, copper exposure, and deformation may occur during production. Manual inspection is not only inefficient and costly, but also vulnerable to factors like fatigue and subjective judgment, making it difficult to meet the high-precision quality inspection requirements of large-scale production. How to make quality inspection more efficient, accurate, and stable? CKVision has the answer. With years of technological accumulation and application experience in the machine vision industry, CKVision has developed a visual inspection solution specifically for the appearance of this part, leveraging technology to address the quality inspection pain points in the industry.
This solution focuses on three core categories of inspection needs, covering quality control throughout the entire production process. For silver dot-related defects, it can accurately identify issues such as missing silver dots, misalignment, thermal discoloration, reverse/misinstallation, and excessive silver powder around the dots. By capturing images with a high-resolution color camera and integrating color extraction and spot analysis technologies, it can quickly distinguish the optical characteristics of silver dots from silver powder, even precisely detecting tiny damaged areas. For silver dot misalignment inspection, the system judges by identifying the distance from the silver dot center to three reference edges. Combined with high-precision imaging from a telecentric lens, the detection accuracy reaches 98%.
1、Silver dot inspection
- Silver dot defects (missing silver dots)
- Silver dot misalignment
- Reverse silver dots
- Thermal discoloration
- Product misalignment
- Excessive silver powder around pressed silver dots
2、Copper exposure inspection
Copper exposure inspection is also a key challenge for this part. Especially when dealing with parts with inconsistent colors or surface oxidation, traditional inspection methods are prone to misjudgment. CKVision adopts a dual-station configuration and optimizes imaging effects through open-face light sources. It first extracts the color of copper-exposed areas, then achieves precise identification through spot area analysis. This successfully overcomes the technical difficulty of surface oxidation interference and effectively avoids product quality issues caused by copper exposure.
3、Deformation, excessive silver dots, and insufficient silver dots inspection
For issues such as part deformation and abnormal silver dot quantity, the solution provides a dual-judgment logic: deformation detection can be achieved through width value analysis or reference edge distance measurement, while silver dot quantity detection is determined by setting regional width thresholds. Equipped with a high-resolution monochrome camera and a backlight source, the system can clearly capture the contour features of parts. Whether it is subtle deformation or cases of excessive/insufficient silver dots, it can quickly identify them, perfectly meeting the high-speed inspection needs of production lines.
