为解决双直线导向机构综合难的问题，以机构运动学知识为基础，在对单直线导向机构进行研究的基础上提出了双直线导向机构综合的一种新的数值求解方法。
On the basis of mechanism kinematics knowledge, a new synthesis method for double straight line mechanism is proposed to solve the synthesis problem of double straight line mechanism.
首先，建立规则蝶形平面放缩机构的运动学模型，分析其结构特点并对其结构和运动进行综合。
Firstly, by establishing the model of regular planar butterfly pantograph, features of these structures are analyzed and the specialty of them are synthesized.
运用解析几何及机构综合的方法，对该无级变速器的运动学规律进行研究，推导了传动比与机构参数的函数关系。
The kinematic law was studied through methods of analytic geometry and mechanism synthesis, and the function of transmission ratio and mechanism parameters were established.
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