Workpiece
🔔 Quartz Glass
🔔 Workpiece: D30 x 250mm
🔔 Hole: D7.8 x 250mm
🔔 Depth-to-Diameter Ratio 32:1
Challenges
❌ High requirement of hole parallelism and hole wall quality
❌ Hole edge chipping
❌ Long cutting tool of how rigidity
Benefits
✅ Hole wall roughness 0.122~0.232μm with ultrasonic machining
✅ Hole parallelism <0.0385mm (vs. required<0.8μm)
