武内製作所

Capable of aspheric lens manufacturing which is impossible with the conventional polishing processing.

Machines to be used

T-GM Type Glass Mold Forming Machine

It is a forming machine Takeuchi Manufacturing designed and manufactured for manufacturing precision glass elements. It operates heating – forming – slow cooling of glass and mold at the same time and is capable of manufacturing of aspheric lens which is impossible with the conventional polishing processing. It is the high-precision forming machine that is capable of annealing temperature curve control (path/schedule) to remove residual stress at the target temperature which is important in the conditions for optical glass forming and has a control unit for oxygen concentration which operates in conjunction with that temperature control. We have a joint development system with RIKEN, a National Research and Development Agency, for forming processes and machine improvement, and are in alliance with mold manufacturers and simulation software companies, which enables a one-stop proposal for precision glass elements you desire.

Specifications of Forming Machines
■Press
Stroke: 80 mm in normal use
Pressure: Control range 0.1 to 5 kN
Speed: 1 - 750 m/min
Drive: Servomotor
■Heater
Method: Ceramic heater
Temperature: 1000℃
Control: Thyristor (Separate control of top and bottom)
■Mold
Size: Up to φ60
Number of mold: Top and bottom as a set
Material: Superhard steel or ceramics
■Vacuum
Ultimate vacuum: 6 Pa or less

Example of Manufacturing