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在本文中提出了一种按给定传动比规律的平面铰接四构件机构综合方法,它不仅能用于不变传动比规律下的综合,而且能用于任何变传动比规律下的综合。本文作者直接从传动比偏差出发,作出一个二自由度的机构,应用Н.Γ.Бруевич院士提出的转化机构的速度图,取得了一个新的加权偏差表达式,使参数权与常数相差极小。两个机构参数可先根据其他附加条件(如保证机构具有有利的传动角数值以获得良好的动力学特性等)加以选定;然后再用平方逼近法求介其余两个机构参数,以提高再现给定传动比规律的精确度并简化计算。文中对介题过程中的一些具体问题作了相应的提示,并将本法与其他各种方法加以比较。文末附有计算示例,计算结果表明了本法的优越性。在本法的基础上,还可以拟定其他四构件机构(如曲柄滑块机构、导杆机构等)及多构件机构相应的综合方法。
In this paper, an integrated method of planar hinged four-component mechanism with a given gear ratio is proposed. It can not only be used for the synthesis under the invariable transmission ratio but also can be used for the synthesis under any law of variable transmission ratio. Based on the deviation of gear ratio, the author makes a two-degree-of-freedom mechanism. By using the velocity diagram of the translation mechanism proposed by Academician Н.Γ.Бруевич, a new weighted deviation expression is obtained, which makes the difference between the parameter weight and the constant very small . The two parameters can be selected according to other additional conditions (for example, the guaranty agency has a favorable value of the driving angle to obtain good dynamic characteristics, etc.). Then, the square approximation method is used to solve the other two parameters to improve the reproduction Given the regularity of the transmission ratio and simplifying the calculation. The paper gives some suggestions on some specific problems in the process of the topic, and compares this method with other methods. At the end of the article, a calculation example is attached, which shows the superiority of this law. On the basis of this Law, it is also possible to draw up a corresponding integrated method for other four-component mechanisms (eg crank-slider mechanism, guide-rod mechanism, etc.) and multi-component mechanisms.