| 小口径双非球面硫系玻璃镜片精密模压成型实验研究 |
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| 引用本文： | 唐昆,孔明慧,朱勇建,陈逢军,毛聪,张明军. 小口径双非球面硫系玻璃镜片精密模压成型实验研究[J]. 红外与激光工程, 2018, 47(4): 418006-0418006(9). DOI: 10.3788/IRLA201847.0418006 |
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| 作者姓名： | 唐昆 孔明慧 朱勇建 陈逢军 毛聪 张明军 |
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| 作者单位： | 1.长沙理工大学 工程车辆轻量化与可靠性技术湖南省高校重点实验室,湖南 长沙 410114; |
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| 基金项目： | 国家自然科学基金（51405034）;湖南省自然科学基金（2015JJ3014）;湖南省教育厅项目（15C0039）;湖南省高校重点实验室开放基金（2017kfjj06） |
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| 摘 要： | 为实现小口径双非球面硫系玻璃镜片的精密模压成型制造，通过正交模压成型实验，研究了相关工艺参数对成型镜片质量的影响规律。首先，介绍了模压成型过程和用于实验的PFLF7-60A型多工位模压成型机床，并根据非球面曲线公式设计了目标镜片。然后，选定了一种环保型硫系玻璃IRG205，通过VFT方程拟合了玻璃粘度与温度之间的关系，确定了模压温度，并对各工位实验参数进行了设置。最后，利用无镀膜模具及球形预形体进行了正交模压成型实验，分析了实验条件下模压温度、加压载荷及保持压力等成型工艺参数对镜片成型质量（形状精度PV、表面粗糙度Ra及轮廓偏移量）的影响规律，并获得了优化的成型工艺参数。结果显示:在优化的工艺参数下，成型镜片ASP1和ASP2的PV值分别为129.2 nm和174.8 nm，Ra值分别为19.6 nm和25.6 nm，轮廓偏移量分别为0.614 m和2.682 m，基本满足镜片高精度应用的要求，为小口径双非球面硫系玻璃镜片的高精度批量制造提供了参考和依据。
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| 关 键 词： | 硫系玻璃 小口径双非球面 模压成型 模压温度 加压载荷 保持压力 |
| 收稿时间： | 2017-11-19 |
Experimental study on precision molding of small dual aspherical chalcogenide glass lens |
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| Affiliation: | 1.Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle,Education Department of Hunan Province,Changsha University of Science and Technology,Changsha 410114,China;2.School of Mechanical and Automotive Engineering,Zhejiang University of Science and Technology,Hangzhou 310023,China;3.College of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China |
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| Abstract: | In order to realize the precision molding of small dual aspherical chalcogenide glass lenses, the influence of the relevant process parameters on the quality of molded lenses was studied by orthogonal molding experiment. Firstly, the molding process and the PFLF7-60A multi-station molding machine were introduced, the target lens was designed according to the aspheric curve formula. Secondly, an environmentally friendly chalcogenide glass IRG205 was selected, and the relationship between the viscosity and temperature of the glass was fitted by the VFT equation, then the molding temperature was determined, and the experimental parameters of each station were also established. Finally, the orthogonal molding experiments were conducted with no-coated mold and spherical preform, the regular influence of molding process parameters such as molding temperature, pressing load and maintenance force on the lenses' molding quality(form accuracy PV, surface roughness Ra and profile deviation) were analyzed, and the optimized molding process parameters were obtained. The results have demonstrated that the values of PV for ASP1 and ASP2 are 129.2 nm and 174.8 nm, the values of Ra are 19.6 nm and 25.6 nm, and the values of profile deviation are 0.614 m and 2.682 m, respectively. The results can satisfy the requirements for high-precision applications of lenses, and provide reference and basis for the high-precision mass production of small dual aspheric chalcogenide glass lenses. |
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