After a motor‑manufacturing enterprise produces the heat‑dissipating blades for this motor, it needs to conduct batch sampling inspection on the finished blades. The consistency of blade contours, the coaxiality of central holes, and the uniformity of blade spacing directly affect airflow efficiency, dynamic balance performance and operating noise. Faced with pain points including blade deformation, uneven shrinkage after injection molding, and difficulties in controlling consistency for multi‑cavity molds, the customer requires a fast, non‑contact inspection method to replace the traditional manual caliper measurement, so as to guarantee consistency across mass‑produced parts.

Physical picture of motor cooling blades

Most heat‑dissipation blades are spatially twisted curved surfaces with complex airfoil curvatures and twist angles. Traditional measuring tools (such as calipers and height gauges) cannot effectively acquire complete surface‑shape data of the blades, making it difficult to evaluate the overall machining quality of the blades. Manual measurement of multiple cross‑sections and multiple points on a single blade one by one is tedious and time‑consuming, and fails to meet the efficiency requirements for batch sampling inspection on the production line. In addition to individual dimensional data, customers also want to analyze whether the blades have uniform shrinkage or local warpage deformation as a whole, so as to optimize the injection‑molding or casting processes. Traditional discrete‑point measurement cannot deliver overall surface deviation analysis.

On‑site Scan (1)

On‑site Scan (2)

The Holon 3D technical team adopts a combined solution of "hand‑held laser 3D scanner + 3D inspection software" to provide fast and accurate dimension inspection services for motor cooling blades.Scanned data plot (1)Scanned data plot (2)Scanned data plot (3)

The industrial 3D scanner delivers a high accuracy of up to 0.02 mm with high‑quality acquired data and strong stability. It is not affected by black paint surfaces and can clearly capture features such as folded edges and curved boundaries of blades to generate a complete high‑density point cloud. The scanned STL model is imported into inspection software for full‑field 3D deviation comparison against the nominal digital model. A colour‑coded deviation chromatogram is automatically generated to visually display areas of blade twisting, spring‑back and out‑of‑tolerance contours. Inspection data including flatness, symmetry, blade bending angle and inner bore dimensions are output automatically. Standardised inspection reports can be exported to quickly separate qualified and unqualified products, greatly improving the efficiency of batch quality inspection.

Deviation Chromatogram (1)

Deviation Chromatogram (2)