Cutting Process Consideration in Dynamic Models of Machine Tool Spindle Units

Danylchenko, Yurii; Storchak, Michael; Danylchenko, Mariia; Petryshyn, Andrii

doi:10.3390/machines11060582

Cited by 11 publications

(4 citation statements)

References 70 publications

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“…The first approach consists of optimizing the design parameters of the crusher, in particular the shape and profile of the working bodies and bearing assemblies [22], ensuring effective lubrication of the bearing supports of the rotors [23,24] and reliable connection of the rotors with their drives [25]. The development of rational routes [26], the choice of processing modes of functional surfaces and equipment [27,28,29] to ensure the accuracy and quality of working surfaces [30,31,32] plays an important role during the manufacture of new parts for the restoration of worn parts of machines and equipment. Special attention is paid to careful static and dynamic balancing of rotors [33,34].…”

Section: Literature Reviewmentioning

confidence: 99%

Restoration of the Impact Crusher Rotor Using FCAW with High-Manganese Steel Reinforced by Complex Carbides

Prysyazhnyuk,

Bembenek,

Drach

et al. 2024

Management Systems in Production Engineering

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A new hardfacing alloy within the Fe-Ti-Nb-Mo-V-C alloying system was utilized to restore the working surfaces of cone crusher rotors using Flux-Cored Arc Welding (FCAW). TiC, NbC, Mo2C, VC, Mn, and ferromanganese powders were selected as the base materials for manufacturing the welding wire. The resulting hardfaced layer exhibits a composite structure, with manganese austenite as the matrix and complex solid solution reinforcements with a NaCl structure, closely resembling the formula (Ti0.3Nb0.3Mo0.3)C. The primary advantages of this hardfacing alloy include its capacity for intensive deformation hardening along with high abrasion resistance. The hardness of the hardfaced layer is approximately 47 HRC in the as-deposited state and increases to around 57 HRC after work hardening, surpassing typical hardfacing alloys derived from high manganese steel by about 10 HRC. The efficacy of the alloy was tested in restoring rotors made of Hadfield steel in a PULVOMATIC series crusher model 1145, during the milling of sand-gravel mixtures ranging from 25 to 150 mm into spalls measuring 5 to 20 mm. With an average productivity of approximately 60 tons per hour and a production volume of 300 tons, the utilization of this hardfacing alloy enabled multiple restorations of the rotor while maintaining productivity at a level of 15 thousand tons of spalls.

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Section: Literature Reviewmentioning

confidence: 99%

Restoration of the Impact Crusher Rotor Using FCAW with High-Manganese Steel Reinforced by Complex Carbides

Prysyazhnyuk,

Bembenek,

Drach

et al. 2024

Management Systems in Production Engineering

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“…Technological techniques include taking into account technological heredity [49], ensuring the accuracy and quality of manufacturing parts by mechanical processing [50][51][52] for the reliable functioning of brakes during the life cycle of vehicles, lifting and drilling equipment, etc. [53].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Degree of Degradation of Brake Pad Friction Surfaces Using Image Processing

Mandziy,

Ivasenko,

Berehulyak

et al. 2024

Lubricants

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The improvement of drilling rig systems to ensure a reduction in unproductive time spent on lowering and lifting operations for replacing drilling tools and restoring the performance of drilling equipment units is an important task. At the same time, considerable attention is paid to the reliable and efficient operation of the braking systems of drilling rig winches. In the process of operation, the polymer pads periodically come into contact with the outer cylindrical surface of the metal pulley during braking, work in extreme conditions and wear out intensively, so they need periodic replacement. Tests were carried out on a modernized stand and in industrial conditions for the brakes of drilling winches. A methodology for evaluating the degradation of the brake pad friction surface during its operation is proposed. The assessment of the degradation degree is carried out based on the image of the brake pad surface using image processing techniques. Geometric transformations of the input image were performed to avoid perspective distortions caused by the concave shape of the brake pads and the spatial angle at which the image is acquired to avoid glares. The crack detection step was implemented based on the scale-space theory, followed by contour detection and skeletonization. The ratios of the area and perimeter of segmented and skeletonized cracks to the total area were chosen as integral characteristics of the degradation degree. With the help of scanning electron microscopy, the character of the destruction of the friction surface and the degradation of the polymer material was investigated. Experimental studies were performed, and the application of the proposed method is illustrated.

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“…directed formation and transformation of product properties during manufacturing [29]; • optimization of mechanical processing by turning [30][31][32], milling [33,34] and grinding [35]; • forming the helical surfaces of threads [36,37].…”

mentioning

confidence: 99%

An Analytical–Numerical Model for Determining “Drill String–Wellbore” Frictional Interaction Forces

Bembenek,

Grydzhuk,

Gajdzik

et al. 2024

Energies

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Currently, drilling of directional oil and gas wells under complex technical-technological and mining-geological conditions requires the use of drill pipes made of various materials. In turn, to choose rational modes of strengthening drill pipes and drill string layouts, information on the contact forces and friction forces of the drill string pipes on boreholes is necessary. Drill pipe curved sections friction with boreholes and drill bit resistance moment changes are the main causes of uneven rotation of a drill string during rotary or combined drilling methods and the occurrence of parametric oscillations. To reduce the cost of mechanical energy for well wiring, it is necessary to take into account the “drill string–borehole rocks” force interaction to estimate the magnitude of the frictional forces and their influence on the technological parameters of the drilling process. To solve this problem, mathematical models of “conventionally vertical and inclined drill string sections–borehole” were built. Based on the industrial data, an analysis of the force interaction of a deformed drill string composed of pipes made of different materials (aluminum, titanium, steel) was carried out. Analytical dependences were obtained for determining the contact forces and friction of the pipes on boreholes. A numerical study of the change of these power factors depending on the depth of the well under conditions of intensive vibration loading was carried out. The amplitude values of these forces, the frequency of their change for good sections, as well as the places for the most rational installation of drill pipes in the layout of the drill string were estimated. It was established that the intensity of contact and friction forces for steel drill pipes is greater than for titanium or aluminum ones. It is shown that the greater impact of a solid steel string on contact forces and frictional forces compared to a layout with sections of titanium or aluminum pipes in the range of vibration frequencies of 8–22 Hz corresponds to a bit rotation frequency of 70–80 rpm. The practical application of the obtained research results will contribute to the improvement of technical and economic indicators of the well drilling process.

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Cutting Process Consideration in Dynamic Models of Machine Tool Spindle Units

Cited by 11 publications

References 70 publications

Restoration of the Impact Crusher Rotor Using FCAW with High-Manganese Steel Reinforced by Complex Carbides

Restoration of the Impact Crusher Rotor Using FCAW with High-Manganese Steel Reinforced by Complex Carbides

Evaluation of the Degree of Degradation of Brake Pad Friction Surfaces Using Image Processing

An Analytical–Numerical Model for Determining “Drill String–Wellbore” Frictional Interaction Forces

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