本文提出了两种产生常用非球面机构的原理。
In this article, principles of two new mechanisms for producing usual aspherical surfaces are proposed.
虎克万向联轴器或许会是人们最熟悉的一个球面机构的例子。
Hooke's universal joint is perhaps the most familiar example of a spherical mechanism.
最后以一种单自由度两环球面机构为例，导出了其摆动力完全平衡条件。
Finally, take a kind of two-looped spherical mechanism with a single degree of freedom as an example the condition of complete balance of its swinging force was derived.
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