IN-LINE SIMULATION-BASED DETERMINATION OF CUTTING FORCE COMPONENTS AT MILLING
The Purpose of the article is familiarization of scientific and technical workers with the features of the study of cutting force components at milling. Taking into account the fact that milling operations account for over 80% of part shaping operations in a number of industries the issues of researching milling forces become especially relevant. METHOD AND ITS DISCUSSION. Milling, especially end milling, is the most complex and least studied process of machining due to a set of the factors simultaneously influencing during cutting, in particular, continuous change of the active length of cutting edges, transformation of milling force components, etc. Without the knowledge of milling forces, it is impossible to design high-performance equipment, technique, tools and setting of machining modes. Empirical dependences of the components of milling forces, which are given in reference books, are fair for specific but not for the general cases of machining that hampers the solution of questions of technological preparation of manufacture. RESULTS. To eliminate this disproportion we introduce the concepts of the conditional width of milling and the conditional inclination angle of cutting edges. It has allowed the distinguishing of 8 cases of the combinations of end milling conditions (other aspects are special cases). Moreover, we have formulated the conditions of change in the direction of the component of the milling force Р х. This resulted in the development of the in-line simulation technique of milling forces based on the summation of single typical impulses of milling force components taking into account temporal factors of teeth simultaneous operation both on circular and axial pitch. CONCLUSIONS. The proposed in-line simulation technique has allowed to lower considerably the complexity of experimental operations as well as has ensured the possibility to model loads on the technological system when designing specific tools, equipment, technological processes and justifying the choice of equipment.