The algorithm of calculation of the dimensions for machining operations of surface of revolution

The algorithm of calculation of the dimensions for machining operations during multi-operational machining of surface of revolution is based on making-up and solving of vector dimensional chain for each operation starting with the last one. Multi-component vector dimensional chain is transformed to three-component linear dimensional chain, in which allowance performs as closed component. Partial components of this chain are radiuses of the surfaces, which were made during two neighboring operations, and the resulting eccentricity between these surfaces. The radius of the surface, which was made during previous operation, is unknown and has to be calculated. The algorithm of calculation of probabilistic numerical characteristics of the resulting eccentricity and the following calculation of the dimension for machining operation is shown. The calculations according to the algorithm described are going on until the dimensions for producing the metal bar are found.