How Hyunion Advance Efficient and Precise Automotive Sheet Metal Inspection?

Hyunion Holding Co.,Ltd is one of China’s leading manufacturers of high-efficiency variable-frequency motors, automotive components, and tooling solutions. Its subsidiary, Liuzhou Hyunion Automotive Components Co., Ltd., specializes in the production and processing of automotive body stampings, welded assemblies, sheet metal parts, and decorative components.

In this case, we will take a closer look at Liuzhou Hyunion Automotive Components, a Tier-1 supplier to SAIC-GM-Wuling, to explore how high-precision 3D scanning technology is transforming dimensional inspection for automotive sheet metal parts.

Challenges with Traditional Inspection for Automotive Sheet Metal Components?

Automotive sheet metal components are typically thin, easily deformed, and produced in a wide variety of geometries. Critical inspection features often include holes, cut edges, and overall dimensional accuracy.

Traditionally, inspecting these parts requires dedicated checking fixtures that precisely replicate the geometry of each component. The inspection process relies on custom fixtures combined with clamping systems, gauges, and inspection pins to verify dimensional compliance. In this approach, it comes with significant drawbacks: fixtures are expensive to manufacture, require long lead times, and are generally designed for a single part, making them difficult to reuse across different products.

A Digital Inspection Approach That Reduces Fixture Costs

The growing adoption of high-accuracy 3D scanning technology offers manufacturers a more flexible and cost-effective alternative.

Using non-contact optical measurement and 3D reconstruction, high-precision 3D scanners can rapidly capture complete digital models of sheet metal parts and perform full-field dimensional inspection. Critical features such as holes, edges, dimensions, and geometric tolerances can all be evaluated within a single digital workflow.

Another major advantage of non-contact measurement is that it eliminates the need for complex, part-specific fixture replicas. Instead, parts can often be secured using simple supports or clamping devices, significantly reducing tooling costs. Combined with flexible holding fixtures, a single 3D scanning system can be used across multiple product types, helping manufacturers lower costs, shorten inspection preparation time, and accelerate production cycles.

Driving Efficiency Through Digital Quality Control

Through its partnership with SHINING 3D, Hyunion successfully integrated high-precision 3D scanning technology into its quality management process.

The implementation has enabled the company to overcome key challenges associated with sheet metal inspection, improve measurement efficiency, and reduce production costs by replacing certain functions traditionally performed by dedicated checking fixtures. At the same time, it has advanced the digitalization and automation of the inspection workflow.