Abstract
The choice of the most rational directions of scientific and technological progress is impossible in our time without careful study and scientifically-based analysis of the sources of information. The purpose of the work is to study the perspective designs of road cutters, providing an increase in productivity and accuracy of operations performed for milling the track of the road surface and its bulges on the basis of patent research. The patent search was carried out in two directions: review of existing processes and kinematic schemes of milling of complex profile surfaces, including pre-surface coatings; review of existing processes of milling of complex profile surfaces on the basis of coordinate closure of the milling cutter-tool-coating system. This review is based on the search for available scientific and technical information, including regulatory and technical documentation, scientific articles, current patents for inventions and utility models, information on advanced manufacturing technologies. The analysis of inventions is carried out, their principle of action is considered. Both positive and negative effects of innovations are revealed. The main perspective directions of modernization of the design of expensive cutters are defined, their classification is presented. The paper presents inventions that are not only designed to increase the productivity of production, rapid tool replacement, but also to improve the accuracy of milling the gauge of the road. The results of the work can be used in the selection of ways to improve the working bodies of road cutters.