Finite Element Analysis on Aspherical Glass Lens Molding Process

Abstract

Abstract:

Based on material properties,the time dependent viscoelastic,structure relaxation,a simulation model of aspherical glass molding process was built by using the commercial finite element program Marc.Comparative analysis of influence of different process parameters(molding temperature,pressing velocity,friction coefficient) on the molding process for the residual stress and the profile deviation was discussed.The investigation shows that the residual stress increases coupled with pressing velocity,friction coefficient,and the reduction of molding temperature.The investigation also shows that the profile deviation decreases coupled with increasing molding temperature and cooling velocity, decreasing pressing velocity.

Key words: glass molding, finite element analysis, residual stress, profile deviation

摘要：

针对玻璃与模具的材料属性、随时间变化的黏弹性和结构松弛原理，基于非线性有限元软件MSC.Marc建立了非球面玻璃透镜的超精密模压成形的有限元数值仿真分析模型，对比分析了不同工艺参数（模压温度、模压速度、摩擦因数等）对成形透镜残余应力与轮廓偏移量的影响。研究结果表明：随着模压温度的升高、模压速度和摩擦因数的减小，残余应力相应减小；随着模压温度和退火速度的增大，以及模压速度的减小，轮廓偏移量相应变小。

关键词: 模压成形, 有限元分析, 残余应力, 轮廓偏移量

CLC Number:

TQ171.6+3

Zhu Kejun;Yin Shaohui;Yu Jianwu;Chen Fengjun. Finite Element Analysis on Aspherical Glass Lens Molding Process[J]. China Mechanical Engineering, 2013, 24(18): 2509-2514.

朱科军;尹韶辉;余剑武;陈逢军. 非球面玻璃透镜模压成形有限元分析[J]. 中国机械工程, 2013, 24(18): 2509-2514.

References

[1]陈逢军[1,2],尹韶辉[1,2],范玉峰[1,2],朱勇建[1,2],刘庆[1,2].一种非球面超精密单点磨削与形状误差补偿技术[J].机械工程学报,2010(23):186-191.
[2]郭隐彪[1],杨平[1],刘建春[2].光学非球面检测平台伺服控制系统研究[J].中国机械工程,2007,18(14):1639-1643.
[3]康念辉[1],李圣怡[1],郑子文[1],戴一帆[1].化学气相沉积碳化硅平面反射镜的高精度超光滑加工[J].中国机械工程,2009,10(1):69-73.
[4]尹韶辉[1],大森整[2],林伟民[3],上原嘉宏[2],陈逢军[1],朱科军[1].一种光学材料高效超精密加工方法[J].中国机械工程,2008,19(21):2540-2544.
[5]陈涛[1],李光耀[1],孙光永[1].覆盖件冲压仿真参数化建模方法[J].中国机械工程,2008,19(19):2292-2296.
[6]Jain A,Yi A Y. Finite Element Modeling of Struc-tural Relaxation During Annealing of a PrecisionMolded Glass Lens [ J]. Journal of ManufacturingScience and Engineering, 2006 ,128(3) : 683-690.
[7]Yan Jiwang,Zhou Tiangfeng,Masuda Jun,et al.Moldeing High — temperature Glass MoldingProcess by Coupling Heat Transfer and Viscous De-formation Analysis[J]. Precision Engineering,2009,33(2):150-159.
[8]Fellows C J, Shaw F. Laboratory Investigation ofGlass to Mold Heat Transfer During Pressing[J].Glass Technoly,1978,19(1) :4-9.
[9]Zhou H M, Xi G D, Li D Q. Modeling and Simula-tion of Shrinkage During the Picture Tube PanelForming Process[J]. Journal of Manufacturing Sci-ence and Engineering, ASME, 2007 . 129 ( 2 ) : 380 -387.
[10]Waqas Iqbal. Identifying the Optimum Process Pa-rameters of Precision Glass Molding for AsphericalLenses[D]. City of Clemson: Clemson University,2009.
[11]Zhou Tianfeng,Yan Jiwang, Kuriyagawa Tsunemo-to. Evaluating the Viscoelastic Properties of GlassAbove Transition Temperature for NumericalModeling of Lens Molding Process[C]//Interna-tional Symposium on Photoeletronic Detection andImaging: Technology and Application. Beijing,2007 ,662402 — 1-662402 —11.

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