Jun Hu, Kaile Xu, Zhuangzhuang Ma, Qiang Ma. Simulation Analysis of Aspherical Lens Molding Based on Generalized Maxwell Model[J]. Laser & Optoelectronics Progress, 2020, 57(9): 092201
- Laser & Optoelectronics Progress
- Vol. 57, Issue 9, 092201 (2020)
Fig. 1. Schematic diagram of glass molding principle. (a) Heating; (b) compression; (c) annealing; (d) mold unloading
Fig. 2. Generalized Maxwell model of five elements
Fig. 3. Simulation model of glass molding
Fig. 4. Overall equivalent stress change during the molding process. (a) Equivalent stress when AB contacts the preform; (b) equivalent stress immediately before BC contacts the preform; (c) equivalent stress when BC contacts the preform; (d) equivalent stress during mold clamping
Fig. 5. Changes in stress at the upper and lower center points of glass preforms
Fig. 6. Effect of temperature on stress of mold and preform
Fig. 7. Effect of molding rate on stress of mold and preform
Fig. 8. Effect of friction factor on stress of mold and preform
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Table 1. Parameters of glass and mold materials
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