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十四面体是多面棱体的一种,通常用于超声多次反射而获得长时间延迟(如1000μS以上)的固体超声延迟线。我们所加工十四面体的材料是熔融石英,其具体加工要求习了毛主席关于“社会的财富是工人、农民和劳动知识分子自己创造的。只要这些人掌握了自己的命运,又有一条马克思列宁主义的路线,不是回避问题,而是用积极的态度去解决问题,任何人间的困难总是可以解决的”的教导,群策群力,经过反复试验,终于摸索了一些加工方法,现介绍如下: 一、粗磨成型 1.将φ160mm的坯料磨成厚度合于图纸
Tetrahedron is a kind of multi-faceted prism. It is usually used for solid ultrasonic delay line with multiple ultrasonic reflections to obtain a long delay (such as 1000μS and above). The fourteen tetrahedrons we process are fused quartz, and its processing requires studying Chairman Mao’s statement that “the wealth of society is created by the workers, peasants and labor intellectuals themselves. As long as these people have their own destiny, there is another The course of Marxism-Leninism is not a question of evasion but a solution to the problem with a positive attitude. Any difficulty in the world can always be solved. ”After a trial and error, we finally worked out some processing methods and introduced the following: First, rough grinding 1. The thickness of φ160mm blank to fit drawings