复合差动振动机构是我们发展弧形连铸机时设计的一种结晶器振动装置。本文绍了它的运动原理及运动精度。通过与国外常用的振动机构对比,看出这种机构具有运动轨迹准确和结构简单紧凑等一系列优点。在长期生产运转中取得了予期的效果。 The compound differential vibration mechanism is a kind of mold vibration device designed when we develop arc continuous casting machine. This article introduced its principle of motion and accuracy of motion. By comparing with other commonly used vibrating mechanisms abroad, we can see that this kind of mechanism has a series of advantages such as accurate trajectory and compact structure. In the long run production has achieved the desired results.