Solution of the problem of machines reliability requires new approaches which at the present stage of machine-building industry development is realized by implementing PLM - conceps (Product Lifecycle Management). The PLM - concepts are the system of management of the machine parts life with design of the functionally-oriented technologies of production by means of parallel engineering. Complex conditions of the products exploitation and complex technological processes of treatment require their profound theoretical and experimental investigation. An important task in the mechanical treatment and operation of products from the standpoint of their reliability is to predict their behavior at a certain point of time. The LM-hardness method developed under the guidance of academician A.A. Lebedev to control the samples structure quality and materials damageability in the investigated part of the samples is proposed. According to the LM-hardness method derivatives of the physical parameters absolute values, for example, dissipation of the obtained control results carried out by the same devices in identical conditions serve as the evaluation criterion. Homogeneity is a parameter that integrally describes the material state when processing the results of hardness control. The homogeneity is described by the Weibull coefficient m and the known Gumbel formula. In our researches we propose to evaluate the analysis of the material structure state both by means of the Weibull coefficient m, and its technological damageability W, which is inversely proportional to the Weibull coefficient. The experimental researches were carried out on aluminium alloy castings in sand moulds.Distribution of the technological damages W by the height of castings is established on the basis of performed researches at the stage of process engineering. The influence of the parameters of the “Sandvik” company tool design in treatment, using the “HAAS” treatment equipment on the change of the Weibull coefficient m is analyzed.

It is recommended to include surface strengthening by plastic deformation into technological process of manufacturing boring pipes and nipples connecting them, which are made of 40ХН steel. The main task of this strengthening operation is redistribution of technological tensile stresses in the material of thread roots, surface strengthening of the metal in the thread roots and formation of compression stresses in the metal, which are able to resist working stresses. The analysis of existing methods of surface plastic deformation showed that the only suitable method for qualitative treatment of thread roots is the method of vibrationalcentrifugal strengthening. This method belongs to the group of dynamic methods of surface plastic deformation (SPD) and provision of high level of energy of metal deformation of strengthened part metal is its peculiar feature and advantage. Purpose. Development of the method of vibrationalcentrifugal strengthening suitable for qualitative strengthening of thread surfaces, its adaptation to strengthening the outer taper thread, definition of the key technological parameters of strengthening treatment. The main tasks of the research were development and production of strengthening appliances suitable for strengthening the taper thread, functioning on the fundamental principles of vibrationalcentrifugal treatment. Development of schematics of original, out of standard vibration machines for strengthening the outer taper thread of boring pipes and nipples connecting them. Methodology. Based on the theory of statistical similarity of fatigue failure, methods are proposed for defining mass reduction and materials consumption of cylinders as a result of efficient strengthening of their inner and outer cylindrical surfaces by means of vibrationalcentrifugal treatment. Findings. As a basis of the structure of the developed appliances for strengthening thread roots of taper thread, there is taken provision of dynamic impact interaction of deformable rollers; whose shape is similar to the thread root profile, through rolling of a massive roller. Due to a small area of contact of a deformable roller with thread root material and large values of deforming cen trifugal force developed by the moving roller, the thread root metal is peened reliably and, most importantly, compression stress develops in it. Originality. For the first time, highly efficient equipment for dynamic strengthening of thread surfaces has been developed which knows no equals in strengthening treatment internationally. Practical value. The practical value is in improving reliability of drill pipes due to enhancing material strength of thread con nections of their elements. Industrial implementation of vibrationalcentrifugal strengthening treatment of thread elements of drill pipes, according to the authors, will decrease the number of cases of destruction of pipe constituents, which will contribute to decreasing repair and servicing time for drilling equipment, and will increase the borehole drilling rate.

Проаналізовано причини відмов циліндрових втулок бурових помп. Розроблено метод вібраційно-відцентрового зміцнення для забезпечення надійності деталей типу «втулка». Адаптовано вібромашину об'ємного оброблення для поверхневого вібраційно-відцентрового зміцнення, приведено принципову схему установки та технологічне оснащення для його реалізації. Опрацьовано та проаналізовано профілограми віброзміцнених поверхонь. Намічено шляхи подальших досліджень Ключові слова: технологія, надійність, безвідмовність, циліндрова втулка, поверхневий шар, вібраційно-відцентрове зміцнення Проанализированы причины отказов цилиндровых втулок буровых насосов. Разработан метод вибрационно-центробежного упрочнения для обеспечения надежности деталей типа "втулка". Адаптирована вибромашина объемной обработки для поверхностного вибрационно-центробежного упрочнения, приведена принципиальная схема установки и технологическая оснастка для его реализации. Обработаны и проанализированы профилограммы виброупрочненных поверхностей. Намечены пути дальнейших исследований Ключевые слова: технология, надежность, безотказность, цилиндровая втулка, поверхностный слой, вибрационно-центробежное упрочнение

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Проаналізовано причини відмов деталей бурового устаткування. Розроблено метод вібраційно-відцентрового зміцнення для забезпечення показників надійності деталей типу «втулка». Адаптовано вібромашину об'ємного оброблення для поверхневого вібраційно-відцентрового зміцнення. Приведено принципову схему вібромашини та технологічного оснащення для зміцнення втулок. Опрацьовано та проаналізовано результати експериментальних досліджень і натурних випробувань. Ключові слова: технологічне оснащення для зміцнення втулок, буровий інструмент, циліндрова втулка, вібраційно-відцентрове зміцнення.