Fabrication and evaluation of complicated microstructures on cylindrical surface.

Area of Science:

• Optoelectronics
• Materials Science
• Mechanical Engineering

Background:

• Roll molds are crucial for fabricating optical films in high-tech fields.
• Fabricating and evaluating microstructures on cylindrical surfaces presents significant challenges compared to planar manufacturing.

Purpose of the Study:

• To investigate the machinability of microstructures on roll molds using a fast tool servo (FTS) system.
• To develop and validate a novel method for fabricating complex optical microstructures on cylindrical surfaces.

Main Methods:

• Designed and optimized a flexible hinge holder for the FTS system using finite-element analysis and fatigue reliability theory.
• Developed a tool radius compensation algorithm for intricate microstructures based on surface fitting and bilinear interpolation.
• Proposed an evaluation index and method using the medium section approach.

Main Results:

• Successfully machined aspheric arrays onto a cylindrical aluminum surface.
• The fabricated microstructures exhibited high quality, demonstrating the effectiveness of the proposed method.
• Optimized structural parameters of the FTS holder for enhanced reliability and performance.

Conclusions:

• The proposed FTS-based method is effective for fabricating high-quality optical microstructures on cylindrical roll molds.
• The developed tool radius compensation algorithm accurately addresses the complexities of microstructure fabrication.
• This advancement facilitates the production of optical components for optoelectronic and high-tech applications.