Improving the efficiency of surface-thermal hardening of machine parts in conditions of combination of processing technologies, integrated on a single machine tool base

OBRABOTKAMETALLOV Vol. 23 No. 3 2021 technology Fig. 4. Finite element model of the HEH HFC process Fig. 5. Generation of geometry (cylindrical surface): a – during machining (turning and diamond smoothing); b – during surface hardening by HEH HFC with loop inductor with a magnetic core а b analysis showed the complete identity of the necessary set of executive movements and the complex of parameters configured in it at all transitions (turning, HEH HFC hardening and diamond smoothing) of integrated processing. Figure 6 shows the partial structural formulas of the layouts in combination with structural-kinematic schemes (SKS) for each processing method separately. The subsequent synthesis of the generalized kinematic structure of the hybrid metalworking system under development was carried out according to the scheme of aggregate modular layout configuration. With this method, the layout formula can be represented as follows: C h 0Z(Xrd 1 +WUd 2 ) (Fig. 7). Based on the combined analysis of the required structural formula for the layout of hybrid equipment, the kinematic structure of the UT16PM machine and the rigidity of its base units, the main directions of modernization of this model of metalworking equipment were identified. The conducted complex of pre- project studies allowed us to prepare working documentation for the implementation of hybrid technological equipment combining mechanical and surface-heat treatment (Fig. 8).