Object of research – technological process of manufacturing monolithic units of the power structure of an airplane glider on metal-cutting machines with a numerical program control system; research methods – used experimental methods of aircraft technology, experimental planning, information systems theory, theoretical conclusions are confirmed by many experiments; results – the influence of mathematical parameters of representation of trajectories in the B-splines form on smoothness of kinematic parameters change of axial movements of executive bodies of production technological systems of details of aircraft is shown and it is substantiated that to ensure the smoothness of the change of speed, acceleration and jerk the trajectory must be submitted by splines not lower than the fifth order, the structure of the CNC system was improved to ensure high-speed processing of monolithic units of the power structure of the glider and the increase of the accuracy of trajectory movements of the working bodies of the metal-cutting machine was experimentally proved when applying the proposed model, improved interpolator of the CNC system to provide in addition to interpolation the position of the calculation of the velocity of the working bodies of the technological systems of production of aircraft parts, the increase of technological feeds in 1,5–2 times simultaneously with increase of accuracy by 20… 50% thanks to application of the developed method of increase of accuracy at modernization of the equipment available at the aviation enterprises is achieved, 1.8 times reduction of machine time of manufacturing of a detail "Hatch cover" by application of the developed method of increase of kinematic accuracy at modernization of the equipment on KSAMC is provided, it is experimentally shown that the error of shape-forming movements both in nature and in magnitude is determined by the systematic component of the error, which indicates the possibility of further improving the accuracy of processing by eliminating the systematic component of the error; novelty – for the first time the hypothesis of smoothness of kinematic parameters of motion is formulated and experimentally confirmed, which consists in the following: if any differential characteristic of movements along the trajectory of processing affects the accuracy of movement of the executive bodies of technological systems for the production of aircraft parts, it must change smoothly, taking into account the limitation of its maximum value, the theory of stabilization of technological feedrate in CNC systems of high-speed processing of aircraft parts by classification of methods of stabilization of feedrate and development of three numerical methods providing necessary level of accuracy of technological systems of production of aircraft parts is improved, for the first time the method of determination of technologically substantiated control cycle frequency on accuracy of trajectory approximation taking into account limitations of maximum feedrate, acceleration and jerk of working bodies of machines is offered and substantiated requirements for the stability of the interpolation velocity of the working bodies to a level not worse than ± 0.01… 0.001%, the model of control of working bodies of technological systems of production of details of aircrafts with the separate task of position and velocity is proposed which is characterized by bigger resolution of value of velocity in comparison with the position at least on 3-4 orders that provides the possibility of control organization into account differential kinematic characteristics, such as speed, acceleration and jerk, for the first time on the basis of experimental research of influence of the scheme of the control cycle organization on accuracy of trajectory movements it is shown that at high-speed processing of aviation parts it is necessary to stabilize a cycle on event of measurement of position; degree of implementation – The results were implemented at the Kharkiv state aircraft manufacturing company, JSC «SkhidLiz», LLC «Production enterprise Plastar» and are used in educational process by the Department of Aircraft Production Technology of the National Aerospace University named after M. E. Zhukovsky "KhAI"; field of application – processing of primary monolithic elements and complex shaped parts in the aerospace industry and general mechanical engineering.
