项目名称: 微光学玻璃元件超声振动辅助超精密热压成型基础研究
项目编号: No.51275165
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 机械、仪表工业
项目作者: 余剑武
作者单位: 湖南大学
项目金额: 80万元
中文摘要: 针对微光学玻璃元件在传统热压成型过程中出现填充不饱满、应力分布不均、脱模粘附等影响成型精度、表面质量和光学性能的科学和技术问题,提出新的超声振动辅助热压成型方法,将超声振动技术引入到微结构和微尺度光学玻璃元件的制造,通过对上模仁或下模仁附加一定频率和振幅的超声振动,改变熔融玻璃材料的流动特性和成型性能,提高复杂结构光学玻璃元件的成型精度和成型质量。研究超声振动作用-玻璃材料流动特性-玻璃/模具贴合度-尺寸及形状的传递性-成型精度之间的内在关系,探讨超声振动下玻璃材料流动机理及特性、模具形状的传递性和精确成型规律、超声振动辅助热压成型过程数值模拟与仿真预测技术、超精密模具反求预补偿技术等关键科学问题,揭示微光学玻璃元件的超声波辅助超精密热压成型机理和规律,形成有效控制微光学玻璃元件热压成型精度的新方法和技术。
中文关键词: 模压成型;光学玻璃;超声振动;流动特性;填充性能
英文摘要: There are some technical defects induced by the process of glass molding press (GMP) of micro optical glass components, which generate worse shape precsion, worse surface quality and worse optical properties. The new ultra-precision thermal molding press of micro optical glass components with assistance of ultrasonic vibration is proposed. By adding ultrasonic vibration to mold during GPM process,the flow chacacteristics of molten glass will be improved, the shape and surface morphology of mold will be precisely copied to micro optical glass components.The key scientific issues such as the effect of ultrasonic vibration on flow characteristic of molten glass, size and shape effect of transferability,the forming precision of shape of mold, as well as the process numerical simulation will be studied in this project in order to reveal the forming mechanism of mirco optical glass components during GMP process with assistance of ultrasonic vibration, and develop new method and technology for mass production of mirco optical glass components.
英文关键词: Glass molding press;Optical glass;Ultrasonic vibration;Flow characteristics;Filling rate