分析了弹簧力封闭凸轮机构的诸多不足，引入采用几何封闭的共轭凸轮机构的思想，并建立了相应的研究分析空间模型。
Corresponding to the demands, done such jobs:(1) Analyzed the limitation of spring-power obturation mechanism, applied the conjugate cam to renew the mechanism and created the interspatial model.
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