British Rank Pneumo company developed improved ASG2500, ASG2500T, Nanoform300 machine tools in 1988. These machine tools can not only perform cutting, but also can be ground with diamond grinding wheels. They can process aspherical metal mirrors with a diameter of 300mm and process workpieces. The shape accuracy of 0.3-O. 16μm, the surface roughness reaches Ra0.01μm. Recently, Nanoform250 ultra-precision machining system was introduced, which is a two-axis ultra-precision CNC machine tool, which can perform both ultra-precision turning and ultra-high-precision grinding. Ultra-precision polishing is also possible. The most prominent feature is that it can directly grind the hard and brittle material optical parts with optical surface quality and surface precision that can meet the requirements of the optical system.
piece. The machine adopts many advanced design ideas of Nanoform600 and Optoform50. The maximum diameter of the machine tool is 250mm. It uses a lifting device to make the maximum diameter of the machine tool reach 450mm. ) can also grind non-axisymmetric parts, and the resolution of the CNC system of the machine tool reaches O. 001μm, the position feedback element adopts a grating with a resolution of 8.6nm or a laser interferometer with a resolution of 1.25nm, the surface precision of the workpiece is 0.25μm, and the surface roughness is better than Ra0.01μm.
Nanocentre250 and Nanocentre600 are three-axis ultra-precision CNC aspherical
It can meet the application requirements of single point and ductile grinding. By rationalizing the structure design of the machine tool, using a high-rigidity servo drive system and hydrostatic bearings, the machine tool has a high closed-loop stiffness, and the resolution of the x and Z axes. With a rate of 1.25nm, this machine tool is considered to be in line with modern process specifications. The Nanocentre aspheric optical parts processing machine produced by CUPE has a processing diameter of 600mm. The surface precision is better than 0.1μm, and the surface roughness is better than Ra0.01μm. CUPE also researches, designs and produces today's world for Kodak Corporation of America.
The largest ultra-precision large CNC optical parts grinding machine "0AGM2500", this machine is mainly used for the processing of hard and brittle materials such as optical glass, which can process and measure 2.5m×2.5m×O. 61m workpiece, it can process a 2m square asymmetric optical mirror, the shape error of the mirror is only 1μm.