Crank-rocker mechanism group with a maximum transmission angle at a crank angle is equal to 30

In work the analysis of methods of synthesis the crank-rocker mechanisms. Developed synthesis method takes into account the nature of the change function of the transmission angle of the crank-rocker mechanisms. The mathematical model of the crank-rocker mechanisms with the maximum of the function of the transmission angle is 90°, when the angle of the crank rotation is 30º. Theoretical established the realm of existence of such mechanisms. This realm of existence identify the conditions of geometric steer this group of mechanisms. Examples of the practical application of the realm of existence for the analysis of geometrical parameters obtained groups of mechanisms.