Grinding
Successful manufacturing of mold die tools is a key step in Kaleido's glass wafer-molding technology.
In order to ensure the most versatile approach to aspheric glass lens manufacturing, Kaleido uses tungsten carbide tools for glass molding, and thus the tool needs to be machined to optical surface finish by means of deterministic micro-grinding.
As grinding in contrast to diamond-turning is characterized by a constant wear of the grinding wheel, advanced compensation routines have been developed to achieve the best possible mold die tools.
In addition to the characteristics of the the ultra-precision center found here, Kaleido operates the following equipment specifically for grinding of optical surfaces:
| Grinding spindles | 20,000 RPM oil-bearing (large parts) 60,000 RPM air-bearing (small parts) |
| Grinding modes of operation | On-axis grinding Off-axis grinding Slow tool grinding 3D raster grinding |