According to the body mechanism design of power supports in coal business, this paper introduces some simple design methods of approximate straight line mechanism.

结合煤炭行业液压支架主体机构的设计，介绍了几种近似直线机构的简易设计方法。

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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.

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。

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Disclosed is a mold head apparatus of a spring molding machine, comprising a rotation control mechanism, a straight-line moving mechanism, a rotating head and a mold head;

一种弹簧成型机的模头装置，包括有一旋转控制机构、一直线运动机构、一旋转头与一模头；

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