GPC12100H Planar Ultra-Precision Four-Axis Single-Point Diamond Turning Machine
Ultra-precision machining of large-scale nickel-based microstructure arrays for single-step, optical-grade mirror surfaces without post-polishing.
The GPC12100H (Equipment Model No. SPDT-4AX) is a four-axis single-point diamond turning machine designed for planar gratings, microstructure arrays, and complex rotationally symmetric components. It features direct-drive linear motors on the X/Y/Z axes and continuous indexing via a C-axis torque motor, enabling direct machining of nanometer-scale cylindrical gratings, V-grooves, and dot array structures on hard metal surfaces such as electroless nickel-plated substrates and stainless steel.
Overall Technical Specifications
| Projects | Parameters |
|---|---|
| X-axis travel | 1200mm, direct-drive linear motor, positioning accuracy ±0.1μm |
| Y-axis travel | 1000mm, direct-drive linear motor, positioning accuracy ±0.1μm |
| Z-axis travel | 150mm, linear motor direct drive, positioning accuracy ±0.05μm |
| C-axis | Continuous rotation, torque motor, positioning accuracy ±0.5″ |
| Maximum Feed Rate | X/Y 5000mm/min, Z 2000mm/min, C 500°/min |
| smallest instruction unit | Linear axis 0.0001mm (0.1μm), rotary axis 0.0001° |
| Interpolation Cycle | 1ms |
| Bus Communication | EtherCAT, Communication Cycle 250μs |
| Control Architecture | Industrial PC Host + Omron or Mitsubishi PLC + Linear Motor Drive, Three-Tier Distributed Architecture |
| Workbench | 00-grade granite, flatness ≤2 μm/m, vacuum adsorption platform 1060mm×940 mm |
| Cutting Tools | Single-crystal natural diamond round-edge cutting tool, edge radius ≤ 5 nm |
| Cooling and lubrication | Micro-lubrication (MQL) mist cooling + constant-temperature oil cooling for spindle and guideways |
| Protection | Fully enclosed protective cover |
| Optional configuration | Constant Temperature and Humidity Chamber Environmental System (20±0.5°C, 45%±5%RH), Femtosecond and Picosecond Dual-Mode Laser All-in-One Machine |
Process Capability and Measured Metrics
- 1Maximum processing area 1060mm×940mm for nickel-based plates.
- TwoRepeats 45 times in 20mm × 20mm units with four-axis联动 seamless splicing to eliminate cumulative error.
- ThreeGrating specifications: period 140~180 μm, groove depth 20~50 μm.
- FourSurface accuracy: PV ≤ 0.2 μm. After one-time and second-order straightness error compensation, the diffracted wavefront PV improves to approximately 83 nm.
- FiveSurface roughness Ra ≤ 5 nm (Rq approximately 7.3 nm), achieving optical-grade finish in a single step without post-polishing.
- SixProcessing efficiency: approximately 2 minutes per 2mm² microarray region.
Four Key Technical Advantages
Single-crystal diamond forming
Natural single-crystal diamond arc-edge with cutting edge radius ≤5 nm, directly machining optical-grade microstructures on nickel-plated surfaces.
Straightness error compensation
Combining primary and secondary compensation corrects the machine tool's inherent straightness error, improving the diffracted wavefront PV to approximately 83nm.
Online closed-loop monitoring
PLC closed-loop feedback monitors cutting depth in real time at 20~50 μm, ensuring consistent physical depth per cycle.
Batch nanometer-level consistency
45 20mm×20mm units achieve nanometer-level depth consistency, ensuring uniform diffraction efficiency and spectral distribution across the entire panel.
Applicable Workpiece
Division of labor between GPC12100H and GP4500H/GP5100H
The GPC12100H processes flat plates, including flat gratings and micro-structure arrays, with X-axis travel of 1200mm and Y-axis travel of 1000mm. The GP4500H and GP5100H process cylindrical rollers, such as roller gratings and anti-counterfeiting embossing rollers, with a maximum processing length of 5000mm and roller diameters ranging from Φ200 to 600 mm. These are not the same type of equipment; they are distinguished by whether the workpiece is flat or cylindrical.
GPC12100H Selection and Process Issues
- Ask:What is the difference between GPC12100H, GP4500H, and GP5100H?
- Answer:The former engraves flat plates, 1060mm×940mm nickel plates; the latter engraves cylindrical rollers with a length of 5000mm and a diameter of Φ200~600mm. Due to their different shapes, these workpieces are not interchangeable.
- Ask:What is the maximum sheet size this machine can process?
- Answer:Maximum board size: 1060mm×940mm; processes up to 45 units of 20mm×20mm in a single setup.
- Ask:What are the maximum achievable grating period and groove depth?
- Answer:Verified period range: 140–180 μm; groove depth: 20–50 μm. Other periods require process validation based on workpiece material and tool edge conditions.
- Ask:Is polishing still necessary after a car wash?
- Answer:No. Achieves optical-grade finish in a single step with Ra ≤ 5 nm, eliminating the need for subsequent polishing.
- Ask:Why can the depth of 45 units remain consistent?
- Answer:Achieves nanometer-level consistency through three key elements: ±0.1μm positioning accuracy on X/Y axes, straightness error compensation algorithms, and PLC-based online closed-loop depth monitoring.
- Ask:How long is the delivery time?
- Answer:Shipment occurs 4 months after the contract takes effect and the technical agreement is confirmed. On-site installation and commissioning take approximately 15 to 20 business days.
Need a trial cut for flat-panel gratings or micro-structured arrays?
Need trial cutting for flat grating, micro-structured arrays, or complex parts? Submit your workpiece drawings and precision requirements. Our Technical Department will provide a process assessment and trial cutting plan based on them.
Submit job details to retrieve the process plan.Brand Description
Shenzhen Guangbo Luwei Innovation Technology Co., Ltd. (brand name: Guangbo Tech) derives its core technology from the national 863 program results of its parent company, Shenzhen Zhuguangbo Mechanical Technology Co., Ltd.