| 1923 |
Taisho12 |
The company was founded. |
| 1924 |
Taisho13 |
Operations began. |
| 1951 |
Showa26 |
Manufactured the mechanical prototype of our first domestically-produced curve generator. |
| 1957 |
Showa32 |
Manufactured our first domestically-produced curve generator. |
| |
| Since then, we have developed, manufactured and distributed a broad range of machines including the following: |
| circulation type automatic abrasive feeding systems for various polishing machines, spherical center swing type polishing machines, |
| high-volume production cylindrical polishing machines, toroidal polishing machines, various types of high-speed polishing machines, |
| high-speed polishing machines using a plate with diamond pellets, single-piece polishing systems using a lens holder, |
| back-and-forth swing type polishing machines with a Tommy bar (or an overarm pin) |
| (which enables the polishing of flat to small-radius spherical lenses by using the forward slanting method, |
| instead of the spherical-center swing method, of moving the semi-spherical-center pressurized plate spindle forward from the vertical position to an arbitrary angle), |
| liquid polishing machines, polishing machines with a special device for polishing crystallized materials, |
| ball grinding machines with a special actuator, various polishing machines for ultra-hard materials such as ceramics, and so on. |
| Our machines are not only distributed in the domestic market but also exported worldwide. |
