Technological Parameters of Hole Shaping in the Cones Rolling-Cutter Row of Roller Cone Bits

Slipchuk, Andrii; Jakym, Roman

doi:10.1007/978-3-030-77719-7_13

Cited by 3 publications

(5 citation statements)

References 10 publications

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“…The present paper is based on the latest investigations dedicated to developing the cutters of the threecone drill bits and continues the previous research of the authors presented in [19] and [20]. The latter studied the influence of various technological factors of the drilling process and geometrical parameters of the roller cone bit on the tool reliability and molding accuracy.…”

Section: Introductionmentioning

confidence: 72%

“…According to [19,20], the calculations showed us the maximal value of the contact pressure equal to 2317 MPa, whilst under the conditions of the minimal tension of min 0.063 mm N = , this pressure equals 1040.5 MPa. As an example, the computer simulation of the stresses character in the 215.9СЗ-ПВ drill bit cutter has been carried out (see figure 6).…”

Section: Resultsmentioning

confidence: 99%

“…In particular, the high strength of the cutter steel and the too close location of the tipped teeth cause the more intensive formation of cracks. In the cases of non-optimal strength parameters, for example, those assessed according to the DI criterion, the disastrous destruction of the cutters takes place due to the formation of cracks in the standard structures of the cutters with the carbide (hard-alloyed) tipped teeth [19,20].…”

Section: Resultsmentioning

confidence: 99%

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Design and technological aspects of functionally oriented technology of manufacturing the three-cone drill bits

Slipchuk

Jakym

Korendiy

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The quality and efficiency of the drilling process significantly depend on the design parameters and operational peculiarities of the drill bit cutter. The present paper is focused on developing the functionally oriented technology of manufacturing the three-cone drill bits. The research methodology involves the theoretical and experimental studies dedicated to analysing the main reasons for the loss of the cutters working capacity, and the technological factors that affect the strength and durability of the “tooth – cutter” press connection. The major scientific novelty consists in defining the relationships between the design parameters of the cutters, their kinematics, dynamics, and operational conditions. It has been established that the destruction of the rock by the three-cone drill bits is carried out by applying successive impacts of the tipped hard-alloyed teeth upon the rock. The rolling of the cutters (bits) along a face (stope) exerts a dynamic effect due to the alternate change of the contact of the teeth with the rock, and the axial load on the bit ensures that the striking part of the teeth is pressed into the rock. The character of wear and destruction of the tipped teeth also has an important influence. During the drilling process, the rock-destructing parts (teeth), as well as the working areas of the cutters, undergo intensive wear and failure. This leads to a significant decrease in the quality of the rock destruction process and a reduction in the drilling efficiency. The obtained results have a significant practical value and can be effectively used by designers, technologists and researchers while implementing the energy-efficient drilling technologies.

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Section: Introductionmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Design and technological aspects of functionally oriented technology of manufacturing the three-cone drill bits

Slipchuk

Jakym

Korendiy

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…За останні роки вдосконаленню технології пресування твердосплавних зубків у шарошки присвячено багато робіт [1][2][3][4][5][6][7]. Автори шукали різні шляхи вирішення проблеми забезпечення довговічності вставного твердосплавного породоруйнівного оснащення шарошок тришарошкових бурових доліт.…”

Section: аналіз літературних джерелunclassified

“…Автори шукали різні шляхи вирішення проблеми забезпечення довговічності вставного твердосплавного породоруйнівного оснащення шарошок тришарошкових бурових доліт. Зокрема, в [1,[3][4][5] встановлені параметри і вимоги щодо технології виготовлення шарошок та розроблені технології складання з'єднання "зубок -шарошка". У дослідженнях [2; 4; 6, 7] приділено особливу увагу взаємозв'язку комплексу технологічних і конструкторських параметрів на ефективність з'єднання "зубок -шарошка" та розроблені основні вимоги щодо організації і реалізації технологічних операцій складання породоруйнівного оснащення на шарошках доліт.…”

Section: аналіз літературних джерелunclassified

The influence of design and technological factors on the durability of the installed carbide explosion equipment of three-cone drill bits

Slipchuk¹,

Jakym²,

Vishnevsky³

2022

ISTCIPA

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Aim. In the study learning trial was made to make a mathematical model of the assembling process in connections " tungsten carbide insert cutter - cone", while the methods of mathematical statistics were applied. This makes it possible to determine the parameters of the distribution of the closing link. Accordingly, the tension is determined by samples of constituent links. For this purpose, the amount of tension was investigated. Tension affects the change in stress, which characterizes the accuracy of the assembly on the strength of the connection " tungsten carbide insert cutter - cone ". Depending on the magnitude of the insert pressing force, it is customary to estimate the tension in the connection. Method. The analysis of tungsten carbide insert cutter and holes in the layers of bit established that the size errors of the component links of dimensional chains are distributed according to laws that they are similar to the normal law of the distribution of random variables. The test was carried out according to the criteria of Pearson and Kolmogorov Results. The increase in pressing force with an increase in tension is due to an increase in elastic deformation both in the cemented layer and in the core layers of the rolling-cutter row. The extreme nature of the dependence of the pressing force on the amount of tension for the connection " tungsten carbide insert cutter - cone " has been established. This dependence, as a characteristic of the strength in the connection, can be used to design technological pressing operations for roller cone bits steels with different strength indicators. Scientific novelty. a mathematical model of the assembling process of connections " tungsten carbide insert cutter - cone " was made. It makes it possible to determine the parameters of the distribution of the closing link - tension, based on the samples of the component links. The established dependencies make it possible to reasonably and most accurately approach the formation of selective groups of teeth and the marking of holes for them. Practical significance. The appointment of tensions, the value of which exceeds the value of the extreme point, causes the occurrence of unfavorable plastic deformation or destruction of the layers of the shell (which are conjugated along the height of the shank of the insert cutter). They also result to the occurrence of irrational stresses in the body of the tungsten carbide insert cutter. It was established that the tension values have a greater influence on the force of pressing carbide teeth into the holes of roller cone bits steel 9310H (USA), when its hardness value is Rockwell hardness 59-60 compared to Rockwell hardness 48-50. Within the limits of the studied tension values, this dependence is linear.

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Application of an integrated system of design and technological support for the production of drill bits

Slipchuk,

Yakym,

Luciv

et al. 2023

ISTCIPA

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Problem statement and the research purpose. The aim of this article is to analyse the wear of drill bits and to identify the elements of the bit that are responsible. Methods. The introduction of computerisation and automation in mechanical engineering has radically changed the approach to drill bit design. The hierarchy of functional elements of the drill bit is represented by a graph in which the drill bit as a product has the following levels: parts, components, zones. A comparative assessment of the quality of the roller cutter was carried out by determining the permissible deviations from the actual value of the quality indicator. Results. It was found that the coefficient of interaction between machines and the control of technological inheritance are also important in the technological route. It is known that heat treatment is a kind of barrier in the technological route, and its influence on the quality of blanks and finished pellets requires a separate study. Scientific novelty and practical importance. The study allows us to find alternatives which are carried out according to the criterion of minimising deviations and which are recorded on technological operations. The parametric approach is effective for this purpose. It allows to formalise the objective function as a generalised quality criterion.

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Technological Parameters of Hole Shaping in the Cones Rolling-Cutter Row of Roller Cone Bits

Cited by 3 publications

References 10 publications

Design and technological aspects of functionally oriented technology of manufacturing the three-cone drill bits

Design and technological aspects of functionally oriented technology of manufacturing the three-cone drill bits

The influence of design and technological factors on the durability of the installed carbide explosion equipment of three-cone drill bits

Application of an integrated system of design and technological support for the production of drill bits

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