XR Devices (AR/VR/MR)
Tolerance Typically ISO 2768-m. Tighter tolerances of +/- 0.05 mm are achievable on specific features but will increase machining time and cost. · min feature Min Wall Thickness: ~1.0 mm; Min Hole Diameter: ~1.0 mm (highly dependent on material and depth-to-diameter ratio).
| Physical Properties | |
| Density | 1.2 |
|---|---|
| Tensile Strength | 65.0 |
| Max Service Temp | 120.0 |
| Hardness | R118 |
| Standard Tolerance | Typically ISO 2768-m. Tighter tolerances of +/- 0.05 mm are achievable on specific features but will increase machining time and cost. |
| Manufacturing Limits | |
| Equipment Specs | Clamping Force: 900 kN; Tie Bar Spacing (H x V): 410 x 410 mm; Max Shot Weight (PS): ~135 g (with 35mm screw); Injection Pressure: up to 2,050 bar; Min/Max Mold Height: 160 / 460 mm; Max Opening Stroke: 360 mm. |
| Min Feature Size | Min Wall Thickness: ~1.0 mm; Min Hole Diameter: ~1.0 mm (highly dependent on material and depth-to-diameter ratio). |
| Precision Grade | Process repeatability enables finished part tolerances of ±0.05 mm on critical dimensions with stable engineering polymers. Machine positioning repeatability is typically within ±0.01 mm, supporting a process capability (Cpk) > 1.67 for demanding applications. |
| Commercial | |
| Factory Advantage | Molding optical-grade polycarbonate for XR lens mounts presents significant challenges with warpage and dimensional stability, especially given the material's hygroscopic nature. Our strategy centers on the Zhafir Zeres III 90T all-electric press. Its servo-driven precision provides exceptional shot-to-shot consistency, which is non-negotiable for controlling the high melt viscosity and shrinkage of this material after its rigorous pre-drying protocol. Unlike hydraulic machines where thermal oil fluctuations introduce process variability, the Zeres III's stable electric control ensures we achieve net-shape parts compliant with RoHS and UL standards directly from the mold. This eliminates dimensional inconsistencies and the risk of defects, delivering the flawless, stable components required by MechanoFab for XR optical assemblies without secondary corrective steps. |
| Target Volume | Optimized for 500-25,000 units |