Founded in 1968 by the founder, Yoichi Kasuga, in the processing of optical parts, and in 1973, started manufacturing jigs and tools. In 1982, we started manufacturing and selling lens polishing machines and caulking machines, and since then we have been working on automating and improving the accuracy of lens processing. Thanks to the support of many customers, the number of units shipped now exceeds 7,000.

 

・Development of ball core rocking grinding machine "One piece can be polished by subordinate rotation"

In order to polish the lens with high accuracy, it is important to bring the lens into close contact with the processing dish, but in our grinding machine, the processing dish rotates while swinging around the curvature (ball core swing). (Grinding machine) and set the lens on the holder that rotates subordinately, and pressurize (upward → downward) parallel to the line segment passing through the center of the processing dish to process.

 

・ "Fixed hairpin" and "Eyeball holder-"

It was developed to further improve the technique of single polishing by subordinate rotation.

The wedge effect of the eyeball holder moves the lens toward the center of the rotation axis, absorbs a slight error (about 10 to 50 μm) on the machine, and makes it adhere to the dish.

 

・ To develop a cam exchange type polishing machine

Precision ball core swing that brings out the function of "eyeball holder" is an indispensable requirement. However, since the ball core swing grinding machine cannot lengthen the swing fulcrum infinitely, there is a limit to the machining curvature. To improve this, we developed an interchangeable cam lens grinding machine in 1987.

Numerical control (NC) infinite curvature equipment was also considered, but at that time it was difficult to realize because NC equipment was expensive. However, the cam-type grinding machine has made it possible to handle lenses of all curvatures.

 

・ NC rocking grinding machine

In 2008, we developed a numerically controlled ball core swing grinding machine (NC swing grinding machine) with three linear axes (patented by HARUCHIKA ), and was able to be increased from 10 μm to 3 μm in 2016.

 

 

In the future, we would like to continue to develop for the rationalization of lens processing, aiming for further improvement, and contribute to the development of the Japanese optical industry.

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