An investigation of the influence of cam track manufacturing accuracy on the dynamics of automatic machine mechanisms

The article deals with the application of dynamic analysis methods to study the efficiency of cam mechanisms depending on the accuracy of manufacturing their elements. It is commonly known that the successful choice of the cam track contour law significantly determines the level of dynamic loads in the mechanism and, hence, its reliability and efficiency. However, all efforts to create the “best” cam track contour law can be nullified by such a factor as the error in manufacturing its elements (primarily cams). The proposed paper analyzes the influence of the accuracy of manufacturing cam tracks for the transfer mechanism of the automated cold-upsetting machine contoured according to the sinusoidal, cosinusoidal and uniformly accelerated laws. Research was carried out for various speed modes of the mechanism operation. A technique for estimating the calculation of the error function parameters at which the dynamic processes in the mechanism increase sharply is given.