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Development and experimental evaluation of a research-oriented precision glass molding apparatus for micro-optical
Pengju Zhao1,2, Lin Zhang1,2, Xian Jing1,2
1Jilin Provincial Key Laboratory of Micro-Nano and Ultra-Precision Manufacturing, School of Mechatronic Engineering, Changchun University of Technology, Yan'an Ave. 2055, Changchun, Jilin 130012, People's Republic of China.
A new precision glass molding apparatus was developed for optimizing micro-optical component fabrication. This research platform offers precise control over thermal, force, and displacement conditions, enhancing replication accuracy in glass molding.
Area of Science:
- Materials Science
- Mechanical Engineering
- Optical Engineering
Background:
- Precision glass molding (PGM) is crucial for high-precision optical components.
- Replication accuracy in PGM is sensitive to thermal, force, displacement, and pressure-holding parameters.
- Optimization and micro-structure replication require advanced, controllable molding systems.
Purpose of the Study:
- To design, construct, and evaluate an open-architecture, research-oriented apparatus for PGM.
- To enable process-parameter optimization and facilitate micro-optical structure replication.
- To provide a versatile platform for studying the PGM process.
Main Methods:
- Integration of short-wave infrared heating with independent thermal zones (upper/lower).
- Implementation of vacuum/nitrogen atmosphere control and water-cooled seal protection.
- Incorporation of force/displacement feedback mechanisms and precise mechanical actuation.
Main Results:
- Achieved thermal stability with temperature deviations within 7°C and differences within ±1°C.
- Demonstrated mold bases maintained above 700°C for over 600s.
- Verified micro-displacement control with a 1.226 μm return positioning error and accurate force feedback.
Conclusions:
- The developed apparatus functions as an effective open research platform for PGM.
- The system's precise control capabilities support process optimization and micro-structure replication.
- Successful molding experiments confirm the apparatus's suitability for PGM research.
