精密热压成型机关键技术研究与实现

doi:10.3901/JME.2018.17.200

机械工程学报 ›› 2018, Vol. 54 ›› Issue (17): 200-207.doi: 10.3901/JME.2018.17.200

• 特邀专栏：智能制造装备 • 上一篇下一篇

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精密热压成型机关键技术研究与实现

舒阳¹, 周志雄¹, 黄向明¹, 许亮², 陈永福²

1. 湖南大学机械与运载工程学院长沙 410082;
2. 宇环数控机床股份有限公司长沙 410323

收稿日期:2017-12-08 修回日期:2018-03-19 出版日期:2018-09-05 发布日期:2018-09-05
通讯作者: 黄向明(通信作者),男,1971年出生,博士,副教授,博士研究生导师。主要研究方向为精密制造工程、工业工程。E-mail:h_xiangming@aliyun.com
作者简介:舒阳,男,1990年出生,博士研究生。主要研究方向为精密制造关键技术研究及其装备开发。E-mail:yshu@hnu.edu.cn;周志雄,男,1953年出生,博士,教授,博士研究生导师。主要研究方向为磨削切削工艺与超精密机床关键零部件研究、精密制造工程。E-mail:zhouzx8@sina.com

Research and Implementation on Critical Technology of Precision Compression Molding Tool

SHU Yang¹, ZHOU Zhixiong¹, HUANG Xiangming¹, XU Liang², CHEN Yongfu²

1. College of Mechanical and Vehicle Engineer, Hunan University, Changsha 410082;
2. Yuhuan CNC Machine Tool Co. Ltd, Changsha 410323

Received:2017-12-08 Revised:2018-03-19 Online:2018-09-05 Published:2018-09-05

摘要/Abstract

摘要： 随着光学电子设备在航天航空、仪器仪表和消费电子等领域的广泛应用，其显示屏及装饰面板的设计形式多样，且3D曲面玻璃更是一种潮流。因此，热压成型就成为量大面广的曲面玻璃制造的核心技术。针对精密成型设备的温度分布与控制及其压力控制等问题，开展精密热压成型关键技术研究，建立多工位成型工艺的仿真模型和加热板传热模型，模拟了玻璃在成型过程中温度变化历程以及加热板表面的温度分布，优化设计出一种新型蛇管式加热管；并研制了精密温控系统和精密压力控制系统，测试结果表明，该温控系统精度在±2℃以内，压力控制响应精度为0.001 MPa，能满足热压成型的要求。开发了多工位精密热压成型样机，建立一套可靠的工艺流程，并利用该样机开展了曲面玻璃的热压工艺试验研究。试验结果表明：压型温度为800℃，压力为0.6 MPa时，可实现成型玻璃轮廓度<0.010 mm，表面粗糙度R_a<0.02 μm，良品率达90%以上。

关键词: 多工位成型工艺, 曲面玻璃, 热压成型, 温度场均匀性, 温度控制

Abstract: As optical electronic equipment is widely applied in the field of aerospace, instruments and meters and consumer electronics, etc, there are various design forms of the display screen and decoration panel of the optical electronic devices. Meanwhile,3D curved shape surface has become a trend. Therefore, compression molding has become one of the most important technologies in the curved glass manufacturing. The critical technology of the compression molding is studied about temperature distribution and the control of temperature and pressure. The simulation model of multi-station molding process is established to simulate the temperature history of glass during the molding process. The heat transfer model of heating plate is built to simulate the temperature distribution of the surface of the heating plate. And a new type of snake heating tube has been optimally designed. The precision temperature control system and precision pressure control system are developed. The results of tests show that the temperature control precision is within ±2℃ and the accuracy of pressure control can reach 0.001 MPa, both of which can meet the requirements of compression molding. Finally a precision multi-station compression molding tool is developed, and the reliable compression molding technological process is established, which sets the foundation for experimental research of compression molding. The experimental results show that the profile tolerance of glass less than 0.01 mm, the surface roughness Ra less than 0.02 μm,and the yield above 90% can be realized by the developed multi-station compression molding tool under the molding temperature of 800℃ and the molding pressure of 0.8 MPa.

Key words: compression molding, curved glass, multi-station molding process, temperature control, temperature uniformity

中图分类号:

TG117

舒阳, 周志雄, 黄向明, 许亮, 陈永福. 精密热压成型机关键技术研究与实现[J]. 机械工程学报, 2018, 54(17): 200-207.

SHU Yang, ZHOU Zhixiong, HUANG Xiangming, XU Liang, CHEN Yongfu. Research and Implementation on Critical Technology of Precision Compression Molding Tool[J]. Journal of Mechanical Engineering, 2018, 54(17): 200-207.

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精密热压成型机关键技术研究与实现

Research and Implementation on Critical Technology of Precision Compression Molding Tool

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