First, the device uses the device is mainly suitable for 4-6 "sapphire, silicon, germanium films, lithium niobate and lithium tantalate single sheet of brittle materials with high precision grinding. 2. Characteristics 1. The main grinding dish and four heads are used frequency stepless grind, and can easily set up four groups of grinding head speed, the relative speed of the grinding process of harmonization. 2. Electrical proportional valve grinding head to achieve the automatic pressure regulation control, Large sections automatic compression grinding process time, pressure transducer according to different grinding process can set, great to meet the requirements of different grinding process on the device; 3. Under the disc material is resin copper coil, the grinding head material 316 stainless steel, alumina ceramic bearing platter. 4. The primary research panel and are located within the grinding head cooling water system that uses non-contact temperature detection device main dish, enabling precise temperature control, PLC and touch screen control can store multiple sets of parameters, display rich, easy to operate. 5. The optional high-precision CNC machine tools to repair the disk device to facilitate a copper disk-shaped dressing, adapted to the sapphire machining process requirements. 6. Selection of the world-renowned components supporting outsourcing vendors to ensure that the operation and use of precision equipment reliability, the reliability and accuracy of indicators to fully meet the needs of the sapphire-sided grinding. Third, the main technical parameters 1. Under the grinding disc diameter φ1232mm × φ360mm ( resin copper coil) 2. grinding disc diameter φ485mm 3. Main platen speed 0 ~ 65rpm 4. grinding head grinding speed 0 ~ 65rpm 5. 6. Number of heads 4 main cylinder diameter φ125mm 7. grinding head lifting stroke 250mm 8. maximum set given pressure 500kgf 9. Minimum set pressure 30kgf 10. Main abrasive disk drive motor 22kW 11. grinding head drive motor 0.75kW × 4 12. Equipment Dimensions (L × W × H) 3050 mm × 1740 mm × 2600 mm 13. Equipment mass of about 7500Kg four installation environment equipment should be installed flat on the ground, away from sources of vibration, dust, smog-free places 1. Working temperature:. 15 ℃ -25 ℃ 2. gas source: 0.4-0.6MPa (no dry oil) 3. Relative humidity ≦ 80% 4. Power: AC380V, 50Hz (three-phase five-wire system) 5. Cooling water pressure: 2kgf / cm2 or less water: 30L / min Temperature: 7 ~ 12 ℃