What Is the Principle of Digital Mold Technology for Double-Curved GRC Shaping? An Analysis of GRC Digital Mold Technology

The digital mold technology for double-curved GRC shapes is based on the technical route of "3D scanning → parametric modeling → CNC machining". Point cloud data is acquired through laser scanning (accuracy ±0.1mm), smoothed by NURBS surface reconstruction, and the mold is then machined with five-axis CNC (accuracy ±0.2mm). The entire process achieves seamless integration from design to manufacturing, keeping shaping errors within ±2mm.

Specific technical parameters: scanning point spacing ≤0.5mm, surface reconstruction smoothness G2 grade, machining step-over ≤0.2mm. For a double-curved curtain wall project with a maximum curvature radius of 1.5m, digital technology shortened the mold production cycle by 40% and cut costs by 30%. The Qinglong GRC digital mold system has achieved precise, rapid production of complex shapes.

3D Data Acquisition

A laser scanner is used, with distance measurement accuracy of ±1mm and angular measurement accuracy of ±0.5". Point cloud density ≥4 points/mm² ensures complete detail capture. Multi-station registration eliminates accumulated errors.

Surface Modeling Technology

NURBS surfaces are used with order 3-5 and control point spacing ≤50mm. Surface smoothness is G2 continuous, with uniform curvature variation. Surface quality analysis is performed to eliminate flaws.

CNC Machining Process

Five-axis simultaneous machining with toolpath spacing ≤0.2mm and scallop height ≤0.02mm. Ball-end mills are used for finish machining, achieving surface roughness Ra≤3.2μm. Machining time is 50% shorter than with traditional methods.

Quality Inspection Methods

CMM inspection accuracy is ±0.01mm, and laser tracker accuracy is ±0.5mm/10m. Inspection point spacing ≤100mm allows comprehensive evaluation of mold quality. A digital twin model is established to enable virtual assembly.

Digital molds are the foundation for realizing complex shapes. Qinglong GRC's advanced technology presents design ideas with precision.