How to Precisely Position Embedded Parts in Double-Curved GRC Panels: Spatial Geometry and Qinglong Group's Positioning Technology Breakthrough

Precise positioning of embedded parts in double-curved GRC panels is a key challenge in ensuring installation accuracy, requiring solutions to three major challenges: "curved surface coordinate calculation, mold machining errors, and displacement during production." Qinglong Group has developed a triple safeguard system of "parametric positioning + mold datum + process monitoring": first, the three-dimensional coordinates of embedded parts on the curved surface are calculated through a BIM model; then, positioning grooves are machined simultaneously when the mold is CNC-machined; during production, a laser positioning device assists placement. In the Hainan Convention and Exhibition Center project, the position error of embedded parts in 12,000 double-curved panels was controlled within ±1.5mm, laying the foundation for fast and precise installation. Embedded parts are the finishing touch of connections, and positioning accuracy determines overall quality.

Parametric Positioning Algorithm

To address the nonlinear characteristics of double-curved surfaces, we developed a dedicated algorithm that links embedded part coordinates with the geometric parameters of the curved surface. When the surface is adjusted, the positions of embedded parts update automatically, ensuring they always remain at the optimal load-bearing position. This algorithm has been filed as an invention patent.

Mold-Integrated Positioning System

When CNC-machining the molds, positioning recesses or datum holes for embedded parts are machined simultaneously. During production, simply placing the embedded parts into the positioning features guarantees accurate positioning. The Nanning Wuxiang China Resources MixC One project adopted this technology, improving embedded part installation efficiency by 3 times.

Optical-Assisted Positioning and Monitoring

During production, a laser projector casts the design positions of embedded parts onto the mold surface, and workers place them according to the light spots. For embedded parts at critical locations, 3D scanning inspection is performed immediately after installation, with timely adjustments made as soon as problems are found. This system enabled the Shenzhen Yirui project to achieve an embedded part pass rate of 99.9%.

Adjustable Embedded Part Design

For particularly critical connection points, an adjustable embedded part system is adopted, allowing fine-tuning of position within a range of ±10mm to absorb inevitable errors. This design played an important role in the complex nodes of the Wuhan Han Show Theatre project.

Precise positioning of embedded parts is a concrete embodiment of precision manufacturing. Through technological innovation and strict control, Qinglong Group ensures that every connection point is precisely in place.