The lens polishing surface is always pressured perpendicularly toward the center of R, which is especially effective on concave surfaces.
This makes it possible to obtain a high-precision surface with minimal irregularity.
The upper shaft swing adjustment mechanism is installed at the front of the machine, facilitating adjustment work.
Polishing Machine
Medium Sized 4-shaft Upper Spindle Polishing Machine UP-4P-50
NAGATA SEISAKUSHO CO., LTD.
High-precision polishing of deep concave lenses by spherical-center pressure oscillation
This is an upper shaft spherical center oscillating polishing machine with a maximum installed tool diameter of φ100 mm, developed based on a unique design.
| No. of shaft | 4 | |
| No. of rotation | Shaft for plate | 200～2,000rpm（inverter control） |
| Swing shaft | 20～80rpm（inverter control） | |
| Kanzashi | Trajectory | 20～80rpm（inverter control） |
| Size | φ2.5×L16×R0.6mm（carbide） | |
| Pressure | Dry air | |
| Input pressure | More than 0.4MPa | |
| Cylinder pressure | More than 0.03MPa（Changeable due to precision regulator） | |
| Power source | AC220V φ3 1kVA | |
| Dimensions | Approx. W1,500×H1,540×D750mm | |
| Weight | Approx. 700kg | |
| Plate attachment screws | M16 P=1.0 male screw ※As designated by the customer. | |
| Electricity capacity | Main shaft motor | 0.2kW 4P φ3 220V 4 units |
| Swing shaft motor | 60W 4P φ3 220V 4 units | |
| Coolant pump | 0.2kW 4P φ3 220V 1 unit | |
| Surrounding temperature | 0～50℃ |
Click to enlarge.