GyroScan

Evolving Drilled Hole Surface Inspection from Visual to Automated

Using GYRO SCAN is extremely simple: just set it up so that the cylindrical inspection probe goes inside the target workpiece. After that, the inspection probe automatically adjusts the focal length, rotates while emitting a laser, and detects whether there are internal defects, allowing for highly reproducible defect inspection.

Laser Scanning Method

The inspection is performed by rotating the laser beam circumferentially. It moves with each rotation to inspect the entire inner surface. Because it uses a microscopic laser beam spot for inspection, it provides excellent resolution. After that, the inspection probe automatically adjusts the focal length, rotates while emitting a laser, and detects whether there are internal defects, allowing for highly reproducible defect inspection.

An Inspection Machine for the Site, Usable on the Production Floor

Thanks to high-speed rotation of 16,000 rpm, it achieves an inspection scan in less than half the time of conventional models. Given the same scanning time as older models, it can perform inspections with more than double the high definition. In addition, because the inspection targets the “condition” rather than the “color” of the surface, it is less susceptible to changes in hue caused by cleaning marks, color unevenness, or lot differences.

* The graph above shows scanning time. Actual inspection requires additional time for the vertical movement of the laser probe and external signal response.

Variable Focus Type Probe

GYRO SCAN uses a variable focus type probe. Therefore, it always acquires clear, precisely focused data, allowing it to detect minute defects as small as φ0.05mm. Furthermore, even if a single workpiece has multiple inspection areas with varying diameters, it can inspect them using the same probe. * Patented (Japanese Patent Laid-Open No. 2010-145283 Inspection Head for Surface Inspection Apparatus)

Laser System Rather Than Camera System

Unlike camera systems that measure information by the surface, the GYRO SCAN’s laser system measures point by point. Because it classifies direct data into 256 gradations rather than using secondary values, the inspection criteria can be clearly defined. As a result, comparative calculations become highly accurate, enabling better reproducibility and a reduction in over-detection. Also, unlike camera systems that require a light source to make scratches or blowholes stand out, the laser system needs no external light source. This makes installation simple and provides excellent reproducibility as it remains unaffected by the surrounding environment.

Easy-to-Use Inspection Screen

The inspection screen combines various algorithms to detect scratches, blowholes, etc. By conducting average comparisons with non-defective parts using 256 color gradations, it detects defective areas, makes comprehensive judgments based on their size and density, and decides whether the workpiece is OK or NG. Because multiple inspection logics can be used simultaneously within the same area, thorough inspections covering a variety of patterns are possible.

Built-In Actuator

GYRO SCAN has a built-in actuator that drives the probe. There is no need to move the GYRO SCAN unit itself for inspection; you can perform the inspection simply by placing the workpiece in a fixed position. This makes it extremely easy to incorporate into conveyance equipment. Additionally, since the drive system and measurement system are pre-integrated, accurate and highly reproducible inspections are always guaranteed.