Technological similarity theory model for series of types of constructions

The similarity between the certain classes of technical resources has long been used in the various fields of science. Regardless how it is defined and which of the issues are concerned, it is associated with the comparison and identification of some new values based on the principles of similarity. The paper presents a model of the theory of similarity in the process of technological features creating (Rząsiński, 2011, 2012). The related technical documentation was created for the series of types of construction and modular systems. Model similarity concerns the determination of the technological conditions and similarity conditions. The conditions depend on the type of operation (turning, milling, drilling). The analysed methods develop the algorithmisation of designing environment and support integration with the process of manufacturing. Further analyses will be carried on in order to specify the theory of technological similarity in the new forms of computer aiding.