机械设计中区别机构类型的新方法

A New Method for Distinguishing Mechanical Types in Machine Design

机械设计中，有时需要核核所设计铰接四杆机构是曲柄机构或是其它类型的机构．为此，推导出两个曲柄是否存在的不等式判别式，并能具体判别出机构是曲柄摇杆机构或是双曲柄机构，或是双摇杆机构等．这为我们设计机械时，提供了一种比格拉肖夫判别式更全面，更简便的判别机构类型的方法理论．

In machine design, it sometimes needs checking if the articulate four-bar linkage designed is a crank mechanism or another type of mechanism. For this purpose two inequality laws for determining the presence of crank are derived which can also determine whether the mechanism will operate as a crank rocker, a double crank or a double rocker and so on. This paper provides a method and its theory for judging mechanism types in machine design, Which is more comprehensive and simple than Grashoff's law.