基于显像管玻壳的曲面造型技术

机载CRT玻壳曲面是一个较为复杂的曲面,其造型的质量,直接决定着模具加工的质量,造型表面的光顺程度又对其基体的应力分布状态有着重要的影响,因此说,机载CRT的曲面造型技术是设计制造中的重要一环.在国家重点工程项目的基础上,研究了玻壳设计过程中的曲面造型方法,提出了造型领域点自由的概念,实现了基于玻壳模型特点的曲面光顺的目的.

The technique of surface modeling based on CRT glass shell

The shape of glass shell in CRT is complex surface. The result of its modeling affects its mould quality directly and the surface fairness impacts the stress distribution seriously in glass shell. So, the technique of CRT's surface modeling is an important step in its design and manufacture. The paper, based on the national key project, studied the method of surface modeling in its design proess, brought forward the concept of free node for modeling field. The surface fairness based on character of the galss shell is achieved.