Journal articles on the topic 'Gearing Design and construction'
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MRKVICA, IVAN, TIBOR JURGA, ANETA SLANINKOVA, JOZEF JURKO, ANTON PANDA, and PAVEL KRPEC. "DESIGN OF A COMPUTER-AIDED GEAR MANUFACTURING TOOL – RACK-SHAPED CUTTER." MM Science Journal 2021, no. 6 (December 15, 2021): 5403–9. http://dx.doi.org/10.17973/mmsj.2021_12_2021108.
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In this work, the calculation of Maag gear shaper cutter parameters is performed for spur gears with helical teeth in three variants – straight-tooth tool with machine offset, helical-tooth tool without machine offset and helical-tooth tool with machine offset. It is therefore a prerequisite that the manufactured involute gearing has helical teeth for each variant. The created CAD program is universal and can be used for construction in other combinations as well. The tool clamping angles on the tool holder, the cutting geometry of the cutter and the characteristic of the gearing are introduced into the calculation. The output of the work will be then calculated individual parameters of the Maag shaping cutter in the tooling system, necessary for its construction. The calculation are performed in program T-Flex CAD and the summary output is graphical 2D/3D representation of the rack-shaped cutter in its base, normal and side planes, always in a different design based on the change of the tool input data and gearing characteristic. The analysis of the tool´s involute profile was solved by vector calculus and matrices and by rotating the tool in the chosen coordinate systems. The specific calculation of the tool parameters will be solved using goniometric functions.
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Maiti, Rathindranath. "A Novel Harmonic Drive With Pure Involute Tooth Gear Pair." Journal of Mechanical Design 126, no. 1 (January 1, 2004): 178–82. http://dx.doi.org/10.1115/1.1637659.
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Consider commercially available “harmonic drives” or “strain wave gearings” (all patented designs). The tooth profiles of the mating pairs of teeth of the noncircular (pitch curve) flex gear and circular (pitch circle) ring gears are nearly conjugate and noninvolute. Evidently none of them offers ideal gear kinematics. In this paper, we propose a new wave generator (or cam) to drive flex gears of harmonic drives with fully conjugate gear pairs of purely involute profiles. The cam profile is made of circular arcs at the two diametrically opposite contact zones and shifted elliptical curves for the other two zones. The geometric construction is done in such a way that tip interference is properly avoided for both engagement and disengagement with nominally stubbed or full depth tooth involute gears. We develop the theory of geometric and gearing conditions. We have also built a physical model in order to verify the geometry of tooth interference and other relevant gearing kinematics.
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M, TUROF. "Optimal design for a cylindrical gear with inclined teeth." Scientific Bulletin of Naval Academy XXII, no. 2 (December 15, 2019): 158–68. http://dx.doi.org/10.21279/1454-864x-19-i2-019.
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Designing is an act of creation, which is a technical activity carried out for productive purpose, and which aims to provide all the data necessary for the implementation of correlated material and financial means, a theme or an idea in practice. Depending on the operating conditions of the machines and their technological destination, optimum reliability, maintainability and ergonomics must be ensured from the design stage. For some areas where toothed gears are used, such as the aerospace industry, the automotive construction etc., reduced gear mass (volume) can be an important parameter to become an optimization criterion. This paper aims to study the gearing mass and proposes to minimize this function. 𝑀𝑔𝑒𝑎𝑟𝑖𝑛𝑔 = 𝑉𝑔𝑒𝑎𝑟𝑖𝑛𝑔 ∙ 𝜌𝑚𝑎𝑡𝑒𝑟𝑖𝑎𝑙 → 𝑚𝑖𝑛
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Vallejo Maldonado, Pablo Ramon, Viktorina A. Romanova, and Messias De Jesus Augusto Campos. "Computer#aided design of the pump profile with epicycloidal gearing using MathCad tools." RUDN Journal of Engineering Researches 21, no. 1 (December 15, 2020): 7–13. http://dx.doi.org/10.22363/2312-8143-2020-21-1-7-13.
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The article discusses a method for determining the relative eccentricity , used in calculating the thermal balance of an internal combustion engine sliding bearing. When performing this calculation, a number of temperature values are set in the bearing oil layer. For each set temperature, the engine oil viscosity value and the bearing load factor Ф are determined. To determine the relative eccentricity, graphical dependencies of the load factor on the relative eccentricity are used as input data. The thermal calculation of the sliding bearing showed that the accuracy of determining the relative eccentricity is of great importance. Their inaccurate definition leads to a failure of the thermal balance in the bearing. In addition, the method of determining the value of by the accepted value of the ratio of the working length of the bearing to the diameter of the connecting rod neck of the crankshaft (graphically) for this calculation is quite time-consuming. For this reason, the graphical method for determining has been replaced with an analytical one. Relative eccentricities were obtained using the least squares method. An algorithm has been developed for automated construction of transverse and longitudinal profiles of an oil pump with epicycloidal engagement.
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Sharaban, Jurij, Vladimir Matusevich, and Aleksandr Shehov. "OBJECTIVE FUNCTION OF PARAMETRIC OPTIMIZATION OF THE SPEED OF A CLOSED PLANETARY MECHANISM FORMED BY TWO SIMPLE JAMES PLANETARY MECHANISMS." Bulletin of the National Technical University «KhPI» Series: Engineering and CAD, no. 2 (December 28, 2022): 41–52. http://dx.doi.org/10.20998/2079-0775.2022.2.05.
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The results of building а mathematical model of estimation the speed of the designed construction of the closed planetary mechanism formed from two simple planetary mechanisms of James are presented. The speed of the designed construction of the mechanism is estimated by the value of the equivalent moment of inertia of the mechanism links reduced to its input shaft. A model is a dimensionless function (analogue the equivalent moment of inertia) of two variables - transmission relations of simple planetary mechanisms, and set of numerical parameters. The parameters take into account the values of the coefficients that characterize the mass inertia models of gears and planet carriers, the design and strength limitations of external gears of simple planetary mechanisms of James, as well as the structure of these mechanisms. Set of values of parameters and range of varying of possible values of transmission relations of simple planetary mechanisms influence on position of a minimum of the analogue the equivalent moment of inertia. The influence of the number of planetary gears of simple planetary mechanisms and the moment of inertia of the planet carrier of the differential mechanism on the positions of the minima of the analogues of the reduced moment of inertia of a closed planetary gear was analyzed in calculations for contact strength and bending strength. Based on the function of the analogue of the equivalent moment of inertia, the objective function of parametric optimization of the project fast-acting of the design of a closed planetary mechanism is built. Keywords: simple James planetary mechanism (mechanisms type ); closed planetary mechanism; moment of inertia of gear-wheel; moment of inertia of the planet carrier; moment of inertia of the planetary mechanism; contact strength of the gearing; bending strength of the gearing; parametric optimization; parametric optimization of the equivalent moment of inertia of the planetary mechanism
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Kresan, T. A., S. F. Pylypaka, I. Yu Grischenko, and Ya S. Kremets. "Simulation of centroids of non-circular wheels with internal and external rolling from arcs of symmetrical curves." Naukovij žurnal «Tehnìka ta energetika» 11, no. 4 (September 10, 2020): 23–32. http://dx.doi.org/10.31548/machenergy2020.04.023.
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The article considers the design of noncircular wheels, which serve as centroids in the design of gears. Centroids consist of congruent arcs of a given symmetric curve. The number of these arcs, that is the elements of the centroid, is determined by the type of gearing (internal or external). In external gearing, the number of elements of both centroids can be arbitrary, starting with one element. In the case of internal gearing, the number of elements of the internal centroid must be one less than the number of elements of the external centroid. If the number of elements is the same, then the centroids coincide. Rolling centroids one by one occurs in the absence of sliding. This is possible provided that the lengths of the arcs of the individual elements of both centroids are equal to each other. The construction of a centroid is carried out in a polar coordinate system. Both centroids are formed by rotating its element, that is the arc of the curve, at a given angle around the pole. The magnitude of the angle depends on the number of elements of the centroid. When rolling one centroid on the other, the pole of the moving centroid must describe the circle. In this case, the rolling of a moving centroid on a stationary one can be replaced by the rotational motion of both centroids around the fixed centers (poles). The point of contact of the centroids during their rotation is on the segment connecting the centers of rotation and which is called the center-to-center distance. This point for non-circular wheels when they rotate makes a certain movement along the specified segment, and for round wheels remains stationary. The length of the arc of an element of one centroid is determined by the magnitude of the central angle on which it rests. The same applies to the element of the second centroid. If the lengths of the arcs of the elements of the centroid are equal, then the values of the corresponding angles are not equal and are in a certain functional dependence. Finding this dependence is reduced to the integration of the expression obtained on the basis of the equality of the differentials of the arcs of the corresponding centroid elements. This expression may not be integrated for all curves from which the arcs of the original or leading centroid are formed. If the expression cannot be integrated, then the construction of the driven centroid must be carried out by numerical methods. The article considers a curve based on the hyperbolic cosine, for which the obtained expression is integrated. The parametric equations of the curves of which the arcs of both the leading and the driven centroids consist are given. It is shown that for a centroid with a given ratio of elements the intercenter distance is determined unambiguously. Centroid drawings with different number of elements for internal and external gearing are constructed.
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Yeo, Sanghoon, Jinwook Kim, Sung Hee Lee, F. C. Park, Wooram Park, Junggon Kim, Changbeom Park, and Intaeck Yeo. "A modular object-oriented framework for hierarchical multi-resolution robot simulation." Robotica 22, no. 2 (March 2004): 141–54. http://dx.doi.org/10.1017/s0263574703005435.
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We describe the design and implementation of RSTATION, an object-oriented, modular robot simulator with hierarchical analysis capabilities. Modularity is achieved via the features of design encapsulation and enables grouping a set of interconnected components into a single component and dividing the robot system into several sets of subordinate modules recursively. By careful construction of the data types and classes, RSTATION allows for hierarchical simulation of the kinematics, and the dynamics at three levels: considering only main links (high-level), using simplified models including dynamic properties of transmission elements (intermediate level), and taking into account the detailed kinematics and dynamics of transmission elements (low-level). Submodules can be set to different resolution during a single simulation. The data types and classes also exploit a recent set of coordinate invariant robot analysis algorithms based on modern screw theory. Central to the low-level dynamic analysis capability is an algorithm for systematically extracting the constraint equations for general gearing systems. The various features of RSTATION are illustrated with a detailed case study of a commercial industrial robot.
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Vasileiou, G., C. Vakouftsis, N. Rogkas, S. Tsolakis, P. Zalimidis, and V. Spitas. "Design and construction of a continuous impregnation apparatus of woven fibres, using non-meshing double-sinusoidal toothed rollers." MATEC Web of Conferences 317 (2020): 01006. http://dx.doi.org/10.1051/matecconf/202031701006.
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Resin-impregnated fibres are extensively used in a variety of industrial applications as is demonstrated in the literature. Resin-fibre impregnation techniques are used in order to create homogeneous macro – materials and to take full advantage of the mechanical properties of the fibrous reinforcement (i.e. carbon, glass, organic or ceramic fibres). However, achieving highly impregnated fibres is proven quite challenging especially in continuous production techniques that are required for large production rates. The main challenge lies in achieving complete impregnation of the tightly arranged fibres mainly referring to the formed yarns containing multiple fibres, sometimes even twisted. This results in partially impregnated materials containing cavities that tend to exhibit inferior mechanical properties compared to the theoretical calculations, which assume fully impregnated materials. These cavities often lead to crack generation, acting as stress concentration sites, resulting in complete failure of the material at macro-level. In this paper a novel technique for continuous production of fully impregnated woven fibres is presented using non – meshing, co – rotating rollers. A laboratory-scale apparatus is designed and described thoroughly in the context of this work. The method resembles pultrusion in the sense that a reinforcement plain fibre mesh (glass) is co–processed with the liquid resin through a pair of co–rotating toothed rollers to produce a continuously reinforced 3D tape. The surface of the rollers is produced from a double-sinusoidal toothed surface (rack) using the Theory of Gearing in three-dimensions, which imposes significant differential sliding of the fibres without differential tension and facilitates fibre wetting. The geometry of the rollers is calculated not to damage the unprocessed fibres, while facilitating local widespreading of the stranded fibres in the three – dimensional space leading to the resin being able to fully penetrate the reinforcing fibre material.
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Abadjiev, Valentin, and Haruhisa Kawasaki. "Computer Synthesis Approaches of Hyperboloid Gear Drives with Linear Contact." Journal of Theoretical and Applied Mechanics 44, no. 3 (September 1, 2014): 3–20. http://dx.doi.org/10.2478/jtam-2014-0013.
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Abstract The computer design has improved forming different type software for scientific researches in the field of gearing theory as well as performing an adequate scientific support of the gear drives manufacture. Here are attached computer programs that are based on mathematical models as a result of scientific researches. The modern gear transmissions require the construction of new mathematical approaches to their geometric, technological and strength analysis. The process of optimization, synthesis and design is based on adequate iteration procedures to find out an optimal solution by varying definite parameters. The study is dedicated to accepted methodology in the creation of soft- ware for the synthesis of a class high reduction hyperboloid gears - Spiroid and Helicon ones (Spiroid and Helicon are trademarks registered by the Illinois Tool Works, Chicago, Ill). The developed basic computer products belong to software, based on original mathematical models. They are based on the two mathematical models for the synthesis: “upon a pitch contact point” and “upon a mesh region”. Computer programs are worked out on the basis of the described mathematical models, and the relations between them are shown. The application of the shown approaches to the synthesis of commented gear drives is illustrated.
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Salgado, David R., and J. M. Del Castillo. "Selection and Design of Planetary Gear Trains Based on Power Flow Maps." Journal of Mechanical Design 127, no. 1 (January 1, 2005): 120–34. http://dx.doi.org/10.1115/1.1828458.
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It is shown that for any planetary gear train (PGT) it is possible to find the relationship existing between the transmission ratio of the train and the power transmitted through each gear pair (gearing power). Specifically, for trains of five and six members, this functional dependence generates a family of curves parameterized by the transmission ratio. A plot of this family of curves is called a power flow map. It allows one to identify those trains that have a potentially high efficiency. In particular, it identifies the transmissions which present power recirculation, a condition that is generally undesirable. Also, an analysis of the power flow maps for the six-member trains leads to the conclusion that, for most of these trains, there is a single expression for the efficiency. The interest of the proposed method is that it is only necessary to know the expression for the PGT’s transmission ratio in order to obtain its power flow map. Also, the map is independent of the constructional solution that is adopted for the train. Finally, the power maps that are obtained are used to find alternatives to the designs of a train consisting of several stages of a basic four-member PGT.
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Protsenko, Vladyslav, Volodymyr Malashchenko, Sylwester Kłysz, and Oleksiy Avramenko Avramenko. "Safety-overrunning ball-type clutch parts contact interaction features." Ukrainian Journal of Mechanical Engineering and Materials Science 8, no. 1 (2022): 38–43. http://dx.doi.org/10.23939/ujmems2022.01.038.
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The article deals with the field of machinery, namely, with the protecting of devices for mechanical driving systems. Safety-overrunning clutches, operating on gearing principle, where safety and overrunning parts are mutually integrated, are perspectives for the building based on modular machines. This case is due to their compactness and low components, comparatively with combined constructions.New clutch design is investigated insufficiently. Particularly their calculation methods, namely parts contact stresses determination, developed deficiently. For ball- type overrunning clutches, contact strength calculations are well-developed, but its transference on new construction safety-overrunning clutches is impossible because of the difference between parts contact interaction in those clutches. The aims of the article are: to analyze created by authors safety- overrunning ball-type clutch parts contact interaction features; to propose on its base clutch construction improvement which could provide parts contact stresses minimization out of dependence with clutch manufacturing and assembling accuracy; taking into account Hertz contact interaction theory results, to obtain expressions for determining clutch parts loads and contact stresses. It is established that using safety-overrunning clutch grooves parallel to radius side surfaces is inexpedient. This can increase balls and internal semi-coupling grooves edge contact and significant contact stresses. To exclude the impact of clutch parts manufacturing and assembling accuracy on contact stresses in paper, proposed to incline grooves side surfaces at an angle to the semi-couplings radius, passing through the ball centre in diametric section. Comparatively,contact grooves inclination to radius with the edge allows decreasing contact stresses in 45–55 times. Further investigations should be focused on force parameters and operating characteristics justification for a clutch with inclined grooves proposed in this paper.
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Донець, Олександр Дмитрович, Олександр Захарович Двейрін, Євген Тимофійович Василевський, Сергій Андрійович Філь, Олександр Григорович Гребеніков, and Андрій Михайлович Гуменний. "ПРОЕКТНО-КОНСТРУКТОРСЬКІ ОСОБЛИВОСТІ ПЛАНЕРУ РЕГІОНАЛЬНОГО ПАСАЖИРСЬКОГО ЛІТАКА." Open Information and Computer Integrated Technologies, no. 83 (May 23, 2019): 4–27. http://dx.doi.org/10.32620/oikit.2019.83.01.
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The design features of the regional passenger aircraft airframe, which were introduced at the stages of developing the An-148/An-158 aircraft family, are described. The design and construction works on the airframe, which were aimed at the implementation of the airframe design concept, based on the principle of a safely damaged structure, are given. The An-148/An-158 airplanes were designed using modern computer-aided design systems. The work performed provides aeroelastic stability for all configurations and all design conditions. When creating a family of regional passenger airplanes, a number of new design and technological solutions were applied to the airframe design (fuselage, wing, pylons of powerplants and tail assembly), in particular: the scope of composite materials (CM) application was expanded, including the fuselage beamstructural elements; auxiliary power unit compartment is made entirely of CM; fastening the skin to the fuselage frame is made using rivets with a compensator, which ensures high quality of the external surface and eliminates the need for milling the heads of rivets after their installation; the fuselage canopy frame was made by welding, which significantly simplified the assembly technology; a two-support connected hitch scheme and control of extension of the slat sections with the use of involute gearing in the slat extensionretraction drives on the hinge mechanisms in the form of a pair of gears – a gear rack; developed a rational design of the wing box with a theoretical surface of double curvature, high adaptability and operability with survivability and high lifetime; a seven-part flap extension-retraction mechanism has been developed, which provides a predetermined flap advancement path; a combined flap design with a metal torsion box part, nose and tail part and a deflector made of CM; a molybdenum coating was applied, which increased the wear resistance of high-loaded parts from titanium alloys by more than 20 times; a monolithic integral design of interceptors and ailerons from CM was developed; a rational design of a pylon of a hinge plate of a mid-flight power plant has been developed with optimal rigidity characteristics to achieve given characteristics of flutter safety, with extensive use of composite materials in the tail and nose sections; the design of caps from pressed semi-finished products with two tips has been developed; an integrated design of the rudder and elevator made of composite materials has been developed.
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Pratap, Sankalp, and Biswatosh Saha. "From chaos of steel cycles to the promise of “Joy of Building”: Tata Tiscon eyeing the next big leap." Emerald Emerging Markets Case Studies 6, no. 1 (May 2, 2016): 1–39. http://dx.doi.org/10.1108/eemcs-06-2015-0140.
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Subject area Strategic Management. Study level/applicability The case is designed for a) MBA students b) Short-duration executive MBA courses. Case overview The case refers to India’s leading steel company Tata Steel. Tata Tiscon, the steel rebar brand, is the organization’s leading retail brand. The case chronicles the period between the birth of the retail brand in the year 2000, its dramatic rise and dominance, to the end of 2013 when some of its initiatives had failed. Tata Tiscon was established as a pan Indian brand on the dint of a distribution network comprising 33 distributors and over 2000 retailers, many of them exclusive to the brand. The brand spawned a series of innovation in the category like “selling by piece”, fixed price concept and “free” home delivery. Together with its channel partners, the company achieved dramatic success which was reflected in its leading market share coupled with significant price premium in a category where price had traditionally being the only selling pitch. After 2010, the company saw an emerging challenge in the form of a new business model, where some companies were gearing to provide the complete portfolio of construction material including cement, steel, etc., and a turnkey construction solution for house builders. Tata Tiscon responded by attempting to enter the service space by launching a building design solution and later a construction supervision solution. Both of these initiatives failed. The protagonist of the case is Mr Keshav Viswanath (Chief of Marketing for retail business at Tata Steel), who is concerned with the failures of these key initiatives and is wondering how to ensure the “leader” status of Tata Tiscon in coming years. Expected earning outcomes The students are expected to understand how a core strategy like differentiation is implemented successfully in “practice”; understand the exploitation–exploration dichotomy in an organization; appreciate difference between radical innovation (based on new organizational routines, new business partners and new relationships) and incremental innovation based on fine tuning of existing organizational routines and relationships. Supplementary materials Rebar production: www.youtube.com/watch?v=J6n9sci8j-8; Tata TISCON AV: www.youtube.com/watch?v=89kOUsbnaYQ; TQM – The Toyota Way: www.youstube.com/watch?v=qf3gdrIMxRw; Disruptive vs. Incremental Innovation: www.youtube.com/watch?v=kOOL_GiaLTo; Approach to innovation is dead wrong: www.youtube.com/watch?v=pii8tTx1UYM Subject code CSS 11: Strategy.
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Miková, Lubica. "DIDACTIC MODEL OF LIFT." TECHNICAL SCIENCES AND TECHNOLOG IES, no. 3(13) (2018): 219–24. http://dx.doi.org/10.25140/2411-5363-2018-3(13)-219-224.
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Urgency of the research. Mechatronics products become more sophisticated and complicated. Mechatronic engineers should be prepared for this complex design process. Practical experimental model helps improve educational process as preparing for practice. Target setting. Miniaturized model of the lift suitable for practical training on subjects focused to microcontrollers, sen-sors, actuators etc. Students have possibility to make practice on laboratory exercises, where they can verify theoretical knowledge obtained on lectures. The arrangement of the model has modular character, because of possibility to rearrange or adding of new function into model. The aim was to create minimized model of real lift with all functions and systems. Actual scientific researches and issues analysis. Many universities are oriented only to finished robotic kits and do not support creativity of students. Open access and open structure model missing in this field. There is a need for fast prototyping model, which allows the creation of new design of product. Uninvestigated parts of general matters defining. The question of the design of printed circuit board are uninvestigated, because they need more time than allows normal exercises. The research objective. The main aim of educational process is to educate engineers with basic knowledge, skills and handicraft. Practical models help as support devices for fulfil of this aim. All mechatronic students can practice a training on these practical models. They become as more skilled and well-oriented engineers.. The statement of basic materials. Construction consist of upper and lower base plate connected with four pillars used as linear guide for moving of lift cage. Lower base plate includes base microcontrollers boards, resistor network, power transis-tor array board, power supply terminals, relay modules, PWM module and signals terminals. Upper base plate consist of DC motor with gearing and screw mechanism for moving the lift cage. Conclusions. The model enables supports the creativity of the students. The starting point of the using of the model can be without any wired connections. Students should connect every part and try functionality of every function. The students receive the defined several problems and they have to analyze it and make any proposal for solution of defined problems.
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Gu, Inhoy. "Design of Antibacklash Pin-Gearing." Journal of Mechanical Design 120, no. 1 (March 1, 1998): 133–38. http://dx.doi.org/10.1115/1.2826665.
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This paper draws attention to pin gearing for its antibacklash gear property. The gear tooth curve derived from a cycloidal curve furnishes the pin gearing with kinematic antibacklash, low pressure angle, and no interference among other features. The pins on one side of a centerline are contacting the forward faces of the mating tooth gear. Simultaneously the pins on the other side of the centerline are contacting the backward faces of the gear. The correct center distance can be maintained by applying a force directed to each other center for multiple contacts. A generating method of gear manufacture is also suggested. Contact and bending deformations as well as the gear stress are analyzed to help its engineering design.
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Gu, Inhoy. "Design of antibacklash pin-gearing." KSME International Journal 11, no. 6 (November 1997): 611–19. http://dx.doi.org/10.1007/bf02946331.
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Feng, Zhan Hui, Ming Kang Gou, and Shao Wu. "Research on Geometry Relationship of Pin-Rack Gearing." Applied Mechanics and Materials 86 (August 2011): 547–51. http://dx.doi.org/10.4028/www.scientific.net/amm.86.547.
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The pin-rack gearing is a particular type of cycloidal gearing which transforms a rotation motion to a linear one. Comparing with rack and pinion gearing and hydraulic swing cylinder, the pin-rack gearing has a more compact structure, less mass and lower cost. Nevertheless, designers always worry about vibration, noise and low use life as pin-rack mechanism working caused by deficiency of design theory. The present research derived the pin-rack gearing tooth profile equation and studied the geometry relationship among design parameters. The results can help to improve the pin-rack gearing design.
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Liu, Hu Ran. "The Analytical Method of the Construction of the Profile of the Basic Rack for Equal Conjugate Curvature." Applied Mechanics and Materials 44-47 (December 2010): 2897–901. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2897.
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After an extensive research on the fundamental theory, the theoretical basis for the Logix gearing will be presented in this paper. This includes the theory for gear meshing with high degree of contact. In comparison to previous studies, the theory of this paper is more restricted going beyond third order parameters into the fourth order, the teeth profile had one order of contact higher than that of the Logix gearing. So that further improved the contact strength of tooth profile. A large category of gearings with high order of contact was presented, while the Logix gear is only one of them, or the special example in realization of my theory. In the Logix gearing, the zigzag curvature center curve of media rank does not always lay about the pitch line and does not extend along the pitch line continuously and steadily. It goes forward and returns. So that, in terms of properties of the transverse engagement, the Logix gearing has not much improvement over the traditional Novikov gearing (in which the transverse engagement is temporally). In my gearing the curvature center of media rank extend along the pitch line continuously and steadily. The transverse engagement factor is larger than that of Logix gearing.
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Jacob, Amanda. "Composites in construction – gearing up for growth." Reinforced Plastics 51, no. 6 (June 2007): 32–37. http://dx.doi.org/10.1016/s0034-3617(07)70183-2.
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Chen, Yang Zhi, Zhen Chen, and Xiao Yan Fu. "Design Parameters for Spatial Helix Gearing Mechanism." Applied Mechanics and Materials 121-126 (October 2011): 3215–19. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3215.
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The formulas of design parameters for spatial helix gearing mechanism are deduced based on the equation of spatial curve meshing, including teeth number, helix angle and screw pitch of driving tines, diameter of tines, corrected length of tines, height of teeth etc.. That could supply theoretical basis for industrial application of the spatial helix gearing mechanism
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Kuzmanović, Siniša, Milan Rackov, Miroslav Vereš, and Adam Krajčovič. "Research of HCR Gearing Properties from Warm Scuffing Damage Point of View." Scientific Proceedings Faculty of Mechanical Engineering 22, no. 1 (December 1, 2014): 57–62. http://dx.doi.org/10.2478/stu-2014-0010.
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AbstractThe issue of design and dimensioning of HCR gearing, particularly of the gearings with an internal engagement, it nowadays, especially in the design of hybrid cars drives, highly topical. This kind of gearing has many advantages in operation, but at the same time it is more complicated in stage of its design and load capacity calculation. Authors in this contribution present some results of temperature scuffing research of internal and external HCR gearing. There are given the equations for calculation of warm scuffing resistance of both external and internal HCR gearing derived according to the integral temperature criterion.
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Smith, Zan, and Maribeth Fletcher. "Gearing Up With Plastic." Mechanical Engineering 120, no. 09 (September 1, 1998): 76–79. http://dx.doi.org/10.1115/1.1998-sep-5.
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This article explains the engineering design concepts behind injection-molded gears that make drives lighter, quieter, and less costly. As the experience base with plastic gears has grown, computer-aided-design (CAD) tools have advanced. The most powerful advantages of plastic gears may be the design opportunities they afford. Gear geometries overlooked by designers used to metal are often easy to mold in plastic, and they can reduce drive size, weight, and cost. The operating speed of plastic gears obviously impacts operating temperature. However, rapid-loading rates can also affect material properties. For some materials, the faster a tooth is loaded, the higher the effective modulus and strength. It is highlighted that designers of plastic gears should also pay special attention to shaft attachment. Bore tolerances naturally impact true center distances, sometimes resulting in loss of proper gear action. Problems with prototypes can also tempt gear designers to change resins—a costly mistake given the different shrinkage characteristics of various plastics. It is better to rework the tooth profile than switch the material, unless it is clear that the wrong material was chosen.
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Barbua-Misu, Nicoleta, and Fitim Deari. "DETERMINANTS OF TRADE CREDIT IN EUROPEAN CONSTRUCTION FIRMS: A PRELIMINARY STUDY." Ekonomika 95, no. 2 (October 3, 2016): 139–57. http://dx.doi.org/10.15388/ekon.2016.2.10129.
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The aim of this paper is to present a comparative study of trade credit indicators and the possible determinants of trade credit for firms acting in the construction sector, using a sample of 958 medium and large firms for the period 2004-2013. The objective of the study is to identify and examine selected variables that may determine trade credit used and provided by selected firms. The sample is derived from the Amadeus database. The examined firms were ones that have sold and bought on credit. The data was organised as panel-data and quantitative analyses were performed. This study demonstrates results that firms with higher trade receivables are less profitable; a positive correlation was found between trade receivables and liquidity, whereas a negative correlation was detected between trade receivables and gearing; larger firms provide and obtain more trade credit than medium firms; more profitable firms use less gearing; firms with higher profit margin are more liquid and more liquid firms use less gearing; based on an average and overall terms, there is not such a clear distinction between Western and Eastern European countries from viewpoint of net trade credit and net trade period.
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Alexandru, Petre, Dragoş Macaveiu, and Cătălin Alexandru. "Design and simulation of a steering gearbox with variable transmission ratio." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 10 (January 6, 2012): 2538–48. http://dx.doi.org/10.1177/0954406211433984.
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This article presents the geometric and functional characteristics of a steering gearbox with variable transmission ratio, which contains a translating wheel (circular curved rack) in gearing with an eccentric sector (segment). The solution requires no special technology because it uses conventional involute gears, being obtained/derived from a classic gearbox with constant ratio by changing the gearing characteristics. The precision of the steering system and the reversibility of the gearing are not affected by these modifications, the driver having a good/safe control of the vehicle. This gearbox can be used for the steering systems of some low-power vehicles, assuring an increased actuating torque (less effort); in this way, the assistance (hydraulic power steering or electric power steering) can be avoided. The study is focused on the following objectives: formulating the theoretical bases, establishing the geometrical parameters, and simulating the functionality of the gearbox, based on the specific requirements of the vehicles’ steering system. Important conclusions have been drawn on the influence of some specific parameters in terms of insuring good gearing conditions, such as the variation of the distances between axes and the variation of the clearance between teeth.
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Oladejo, Kolawole Adesola, Rahaman Abu, Kolawole Taofeek Oriolowo, Dare Aderibigbe Adetan, and Olufemi Adebisi Bamiro. "Development of Computer-Based Model for Design and Analyses of Worm Gearing Mechanism." European Journal of Engineering Research and Science 3, no. 12 (December 23, 2018): 84–90. http://dx.doi.org/10.24018/ejers.2018.3.12.1040.
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Current computer software for designing gear systems have limited flexibility and few offer multiple gearing design options. The objective of this study was to develop an interactive package for the design and analyses of worm gearing mechanisms. The worm gears were designed based on full-depth involute teeth. Mathematical models were developed to compute geometry factors for surface durability of single-enveloping worm gearing cases which were extracted from established American Gear Manufacturers Association (AGMA) standards. Maximum percentage errors from the geometry features, bending loads and wear loads are 0.97%, 3.27% and 1.77% respectively and insignificant. A software capable of computing geometry parameters, bending and wear loads, and selecting appropriate materials for worm mechanisms with good accuracy has been developed.
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Oladejo, Kolawole Adesola, Rahaman Abu, Kolawole Taofeek Oriolowo, Dare Aderibigbe Adetan, and Olufemi Adebisi Bamiro. "Development of Computer-Based Model for Design and Analyses of Worm Gearing Mechanism." European Journal of Engineering and Technology Research 3, no. 12 (December 23, 2018): 84–90. http://dx.doi.org/10.24018/ejeng.2018.3.12.1040.
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Current computer software for designing gear systems have limited flexibility and few offer multiple gearing design options. The objective of this study was to develop an interactive package for the design and analyses of worm gearing mechanisms. The worm gears were designed based on full-depth involute teeth. Mathematical models were developed to compute geometry factors for surface durability of single-enveloping worm gearing cases which were extracted from established American Gear Manufacturers Association (AGMA) standards. Maximum percentage errors from the geometry features, bending loads and wear loads are 0.97%, 3.27% and 1.77% respectively and insignificant. A software capable of computing geometry parameters, bending and wear loads, and selecting appropriate materials for worm mechanisms with good accuracy has been developed.
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Litvin, F. L., and Ali Seireg. "Theory of Gearing." Journal of Mechanical Design 114, no. 1 (March 1, 1992): 212. http://dx.doi.org/10.1115/1.2916919.
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Yates, D. E., and G. J. Lack. "Development Testing of Epicyclic Gearing." Journal of Engineering for Gas Turbines and Power 114, no. 2 (April 1, 1992): 328–33. http://dx.doi.org/10.1115/1.2906592.
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The increasing use of epicyclics for high-powered marine and industrial applications has resulted in world-wide interest in this type of gearing. The coaxial input and output, reduced losses, small size, and low weight are some of the advantages. The use of a full-size development test rig using the power circulation method has been fundamental to the evolution of double helical, flexible annulus epicyclics, and has led to a detailed understanding of their operating principles. This understanding has been essential for the analytical modeling and the development of innovative design concepts. The paper outlines some of the work that has been carried out in the test rig at NEI Allen Ltd.—Allen Gears. The method of measuring the dynamic load sharing is discussed and some of the results that have led to improvements in the design and manufacturing methods are given. Test rig work continues currently with the development of low-noise gears and vibration isolation.
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Ivanov, Konstantin S. "Drive of Extreme Transport Technique." Applied Mechanics and Materials 245 (December 2012): 185–90. http://dx.doi.org/10.4028/www.scientific.net/amm.245.185.
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The drive of the transport machine in extreme conditions should provide high reliability and durability. For this purpose the tooth gearing should have constant gearing of cogwheels. In a number of patents transmission in the form of the hydraulic converter and not switched tooth gearing is presented. However the hydraulic converter considerably complicates transfer and reduces its reliability. Transmission of extreme transport technique should have a simple design and control and to meet extreme requirements. It is expedient to use not switched adaptive tooth gearing based on a phenomenon of mechanical power adaptation. The present work is devoted working out and a theoretical substantiation of effective adaptive transmission for the transport technique working in extreme conditions.
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Bair, Biing-Wen. "Computer Aided Design of Elliptical Gears." Journal of Mechanical Design 124, no. 4 (November 26, 2002): 787–93. http://dx.doi.org/10.1115/1.1485092.
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An elliptical gear drive, whose rotation axis coincides with its geometric center, is simulated using generation with a rack cutter. The mathematical model of an elliptical gear based on the theory of gearing and gear generation mechanism is also developed. Owing to its complex geometry, the profile of elliptical gears may exhibit tooth undercutting, and pointed teeth. In addition, tooth undercutting of an elliptical gear based on the developed mathematical model of the elliptical gear and the theory of gearing is also investigated. Pointed teeth usually appear on the major axis of the gear elliptical pitch curve. Moreover, a geometric relation is developed and applied to prevent the pointed teeth appearing on elliptical gears. Furthermore, a computer simulation program is developed to generate the tooth profile of elliptical gears without tooth undercutting and pointed teeth. Various numerical examples illustrate the effectiveness of the computerized design process.
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Skel, Vladimir. "Oscillation of gear mechanisms of construction machines." E3S Web of Conferences 263 (2021): 04061. http://dx.doi.org/10.1051/e3sconf/202126304061.
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The article is devoted to the study of the influence of gearing errors on the vibration activity of the open gear transmission of construction machines. A brief review of the literature on the relevance of the topic of gear dynamics in different industries and the results achieved so far is given. The features of open gears of turning mechanisms of construction machines are highlighted: a large gear ratio, a large gearing module, the absence of a common frame for the gear and wheel, poor transmission lubrication conditions, a small degree of precision in the manufacture of gears and the actual overlap coefficient is close to one. With these features, the main internal source of vibration is the difference between the main steps of the gear and the wheel and the error of the involute profile of the teeth. The results of the study of the influence of these features of vibration damping and open gear transmission on the dynamics of the turning mechanism of the construction machine are presented. The studies were carried out on a generalized two-mass nonlinear dynamic model with internal perturbation from the gear pair and with structural damping. The studies were conducted mainly for the transitional modes of resonance. Based on the analysis of the results obtained and presented in the article, recommendations are given to reduce the fluctuations of the turning mechanisms of construction machines.
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Feng, Yan Sen, Rong Guo Hou, Zhi Yong Li, and Guo Yong Zhao. "The Virtual Prototype Design of the Micro Gear Box Mapping Stacker Base on Solid-Works." Applied Mechanics and Materials 273 (January 2013): 208–11. http://dx.doi.org/10.4028/www.scientific.net/amm.273.208.
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The micro gearing box mapping stacker is designed based on the solid-works software. It aims to solve the difficulty of the micro gearing box mapping stacker, and the efficiency and mapping quality are greatly improved. The constitution of mechanism and working principle are emphasized here; the key mechanical transmission about the micro gear box mapping stacker is also designed ; the sending and mapping operation of the work-pieces are realized by the chain and synchronous belt transmission.
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Maláková, S., and S. Sivák. "Gear shape optimization for non-circular gearing." IOP Conference Series: Materials Science and Engineering 1199, no. 1 (November 1, 2021): 012018. http://dx.doi.org/10.1088/1757-899x/1199/1/012018.
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Abstract The quality of gearings is largely decided by their geometric design. If the geometric design is incorrect, the reliability of the transmission will not be ensured even by the use of the highest quality materials. Conversely, sometimes excellent geometric gear design can save expensive material costs. The work describes the procedure of optimizing the geometric model of a non-standard elliptical gear eccentrically mounted with a continuously changing gear number for specific parameters.
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Radzevich, Stephen. "Elements of dynamics of geometrically-accurate crossed-axes gear pair with line contact between the tooth flanks." MATEC Web of Conferences 366 (2022): 03001. http://dx.doi.org/10.1051/matecconf/202236603001.
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The paper deals with geometrically-accurate crossed-axes gearing that features line contact between the tooth flanks of a gear, and of a mating pinion. The gearing of this design is commonly referred to « R – gearing ». R – gearing is the only possible kind of crossed-axes gearing, in which the tooth flanks of a gear, and of a mating pinion are in line contact with one another. Contact motion characteristics, and the key elements of dynamics of R – gearing are concisely outlined in the paper. The tooth profile sliding, and sliding in the lengthwise direction of the gear tooth, are covered at the beginning of the paper in the section titled Contact motion characteristics. The key elements of dynamics of R – gearing are discussed in the rest sections of the paper. Here, analytical solution to the problems under consideration is presented. The obtained results of the research are also valid for gear pairs that operate on intersected axes of rotation of a gear, and of a mating pinion. This becomes evident if one assumes the center-distance in the gear pair equal to zero. The discussed results of the research form a foundation for the further analysis of dynamics of real gear pairs that operate on crossing axes of rotation of a gear, and of a mating pinion.
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Yang, Nan, Dawei Zhang, and Yanling Tian. "Tooth Surface Design for Variable Transmission Ratio Bevel Gearing." Applied Mathematics 06, no. 10 (2015): 1685–95. http://dx.doi.org/10.4236/am.2015.610150.
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Wang, Wei Jie, Rong He, and Xing Qiao Deng. "Dynamic Force Analysis of the Non-Backlash Double-Roller Enveloping Hourglass Worm Drive Based on LS-DYNA." Applied Mechanics and Materials 415 (September 2013): 506–9. http://dx.doi.org/10.4028/www.scientific.net/amm.415.506.
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To study the tooth load distribution, the stress,strength and other issues of the non-backlash double-roller enveloping hourglass worm(NDEHW) drive, a innovative method based on finite element method and LS-DYNA software is used to do dynamic force simulation analysis.The results show that the worm gearing has good transmission performance and engagement performance, the strength and stiffness of the worm gearing does meet the design requirements. All of these work will provid a theoretical foundation and practical experience for actual design and manufacture.
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Mu, Cun Yuan, Cong Min Gao, and Zhen Ge. "Noise Decreasing Methods of Gearing Vibration for a Idling Construction Machine." Applied Mechanics and Materials 226-228 (November 2012): 427–30. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.427.
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This paper analyzes the gearing noise of a reinforcing bar straightening cutting machine, according to the test of the machine around six positions under the background noise of 49dB(A). The test result shows highest noise is in the position 4 and position 6. The noise is arrived at 1026 dB(A). By frequency spectrum analysis before noise reduction and after noise reduction, Identify the source of main noise, points out relative elements gears 26/54, and presents some methods to decrease the noise: the methods of gear correction, improving the vibration resistance of mechanism, reducing noise in the view of process and control noise transmission. The best methods is gear correction and the test improves that it can reduce noise 0.5-2 dB(A). It can be a reference to the designers and manufactures.
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Dankov, A. M. "PLANETARY CONTINUOUSLY ADJUSTABLE GEAR TRAIN WITH FORCE CLOSURE OF PLANET GEAR AND CENTRAL GEAR: FROM IDEA TO DESIGN." Science & Technique 17, no. 3 (May 31, 2018): 228–37. http://dx.doi.org/10.21122/2227-1031-2018-17-3-228-237.
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One of the reasons constraining use of a continuously adjustable gear train with compound poly-sector gear wheels in general and its most perspective version that is a planetary continuously adjustable gear train in particular is its design complexity. For example, a complex design of the mechanism for regulation of transmission gear ratio is specified by the use of involute gearing that requires a presence of backlash and bottom clearances for normal functioning and, therefore, autonomous but synchronous movement of a planet gear, as well as sectors of a central gear. In order to simplify the design of especially this mechanism for continuously adjustable gear train the paper justifies a transition to a backlash-free gearing and during this process either a planet gear or sectors of central gear are forcibly moving for regulation of the transmission ratio without losing contact with the mating element. Contact constancy of interacting elements under load is ensured by their force closure which is meant to overcome an action of gearing forces. The paper describes options for implementation of backlash-free gearing as a result of planet gear and central gear force closure, each variant is characterized by selection of active (controlled) and passive (execution of force closure) gear element. In the case of gear transmission with planet pinion coaxial tooth rims it is appropriate to implement a version with involute gearing, passive planet gear and active gear sectors of central gears. In the case of gear transmission with planet pinion opposite tooth rims the most acceptable option is with the cycloidal pin wheel gear, active planet gear and passive gear sectors of central gears. The paper proposes to carry out the force closure for teeth of gear components by means of an elastic element (a spring). A method for determination of parameters for an elastic element has been described depending on a planet gear design and the paper also shows simplification level in the gear design.
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Galvis-Assmus, Patricia. "Gearing up for SIGGRAPH 2004." ACM SIGGRAPH Computer Graphics 38, no. 2 (May 2004): 2. http://dx.doi.org/10.1145/1012283.1012287.
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Dooner, David B. "On the Three Laws of Gearing." Journal of Mechanical Design 124, no. 4 (November 26, 2002): 733–44. http://dx.doi.org/10.1115/1.1518501.
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Three laws of gearing are presented in terms of a three link 1-dof spatial direct contact mechanism. The first law of gearing defines the instantaneous relationship between an infinitesimal displacement of an output body to an infinitesimal angular displacement of an input body for a specified tooth contact normal. A system of cylindroidal coordinates are introduced to facilitate a universal methodology to parameterize the kinematic geometry of generalized motion transmission between skew axes. The second law of gearing establishes a relation between the instantaneous gear ratio and the apparent radii of the hyperboloidal pitch surface in contact as parameterized using a system of cylindroidal coordinates. The third law of gearing establishes an instantaneous relationship for the relative curvature of two conjugate surfaces in direct contact and shows that this relation is independent of the tooth profile geometry. These three laws of gearing along with the system of cylindroidal coordinates establish, in part, a generalized geometric theory comparable to the existing theory for planar kinematics.
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Rackov, Milan, Miroslav Veres, Željko Kanovic, and Siniša Kuzmanovic. "HCR Gearing and Optimization of its Geometry." Advanced Materials Research 633 (January 2013): 117–32. http://dx.doi.org/10.4028/www.scientific.net/amr.633.117.
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A special kind of the basic involute profile of non-standard gearing is called high contact ratio (HCR) gearing, where the contact ratio is higher, there are always at least two pairs of teeth in contact and the unit addendum height is not equal to one like for standard gearing. Thus, the tooth height is increased. When HCR gearing is used, it is not necessary to achieve a greater gear load capacity, but nevertheless there is a greater risk of interference due to the greater tooth height. The advantages of HCR gearing is higher resistance (load is distributed on more pairs of teeth at the same time) and a lower relative noise level of gearing, which can be significantly reduced by using an integer HCR factor. HCR profiles are more complicated than standard involute profiles, they have a greater predisposition for interference, pointed tip thickness and undercut of teeth during production (primary production interference). Due to increased addendum height, there is a larger possibility of some interference or pointed tooth tip occurring. Therefore, these issues need to be prevented in the design phase, and ensured that all relevant equations and constraints are satisfied. The described method of finding optimal gear parameter values uses a Generalized Particle Swarm (GPS) optimization algorithm and MATLAB. The GPS optimization is shown to be a very fast and reliable method.
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Bair, B.-W. "Computer aided design of non-standard elliptical gear drives." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 216, no. 4 (April 1, 2001): 473–82. http://dx.doi.org/10.1243/0954406021525250.
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An oil pump with a larger pumping volume and more compact size than conventional pumps is designed with elliptical gear drives. In this work, an elliptical gear drive with few teeth is used in the design of pumps with a large pumping volume. Also, a mathematical model of a profile-shifted elliptical gear is developed, based on the theory of gearing and the gear generation mechanism. This study also investigates the tooth undercutting of a non-standard elliptical gear, based on the proposed mathematical model of the profile-shifted elliptical gear and the theory of gearing. Pointed teeth generally appear on the major axis of the gear elliptical pitch curve. Moreover, a geometric relation is developed and applied to prevent pointed teeth on non-standard elliptical gears. Moreover, a computer simulation program is developed to generate the tooth profiles of non-standared elliptical gears with few teeth and a compact size, without tooth undercutting and pointed teeth. Numerical examples demonstrate the effectiveness of the computerized design process.
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Maláková, Silvia, Michal Puškár, Peter Frankovský, Samuel Sivák, Maroš Palko, and Miroslav Palko. "Meshing Stiffness—A Parameter Affecting the Emission of Gearboxes." Applied Sciences 10, no. 23 (December 4, 2020): 8678. http://dx.doi.org/10.3390/app10238678.
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Emission is one of the key problems in the automotive industry, which engineers try to eliminate by lowering emissions to the minimum. Transmission emission plays an important part here. The basic characteristics of gears include their shape, load capacity, and emissions. The most significant source of noise and vibration in the gearbox is the step change in the meshing stiffness of the gearing, which depends on the path of meshing at the entry and exit of the meshed teeth. Ensuring a permanent multi-pair mesh is a way to mitigate these step changes as much as possible. This leads to the design and implementation of gears in an integer contact ratio. In addition to this, the article deals with the impact of individual parameters on the stiffness of the gearing, which is a source of noise and vibration. The meshing stiffness of the gearing was determined on the deformation basis of the gearing, as solved by the Finite Element Method.
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Панчук, K. Panchuk, Ляшков, A. Lyashkov, Варепо, and L. Varepo. "Kinematic Geometry of Curve and Its Application to Geometric Modeling Flat Gear." Geometry & Graphics 5, no. 2 (July 4, 2017): 25–31. http://dx.doi.org/10.12737/article_5953f2c5611703.02086017.
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The paper presents the results of investigations in the field of kinematic geometry of the spatial curve of a line. The basis of the research is the method of the movable trihedron of the curve. The components of the trihedron motion along the spatial curve are considered and it is shown that its resultant instantaneous motion is screw motion. This result differs from the representation of the motion of a trihedron known in geometry as a rotation described by the Darboux vector. An analytical description of the set of axes of instantaneous helical motions of a trihedron in a moving and fixed system of assigning a spatial curve is given. The possibility of applying the obtained general results to the investigation of a plane curve is shown. The paper proposes a flat tooth gearing model based on the geometric interpretation of the motions of a trihedron of a plane curve and known in the geometric theory of plane mechanisms of the construction of Bobillier. The geometric scheme of this construction is expanded due to the introduction of evolutes simulating instantaneous motions of trihedron of the corresponding construction curves. As a result, a geometric model is obtained, which is more complete in comparison with the known models of flat gearing. It allows to perform both direct and inverse tasks of profiling the teeth of the wheels while simultaneously obtaining the curvature of the desired profiles in the absence of such. The proposed model can be used as the basis for the development of gears with a planar gearing scheme by the condition of achieving the necessary transmission performance due to the geometric shape of the teeth of the wheels.
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Chang, Shinn Liang, Chien Kai Huang, Khac Hiep Doan, and Jia Hung Liu. "Serration Design and Simulation of Gear Plunge Shaving Cutter." Applied Mechanics and Materials 376 (August 2013): 377–82. http://dx.doi.org/10.4028/www.scientific.net/amm.376.377.
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Now, plunge shaving process is becoming a common method in gearing manufacture. Serration design and parameters adjustment for shaving cutter require considerable experiences and time. By combining Visual Basic and Solidworks API, this study proposes a new method to quickly simulate the shaving process and get final work gear profile easily.
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Matusevich, Vladimir, Jurij Sharaban, and Aleksandr Shehov. "MODELING AND ANALYSIS OF PARAMETRIC OPTIMIZATION OF THE MASS OF A CLOSED PLANETARY MECHANISM FORMED BY TWO SIMPLE PLANETARY MECHANISMS OF JAMES." Bulletin of the National Technical University «KhPI» Series: Engineering and CAD, no. 2 (December 30, 2021): 56–70. http://dx.doi.org/10.20998/2079-0775.2021.2.09.
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The mathematical model of estimation of a design mass of the closed planetary mechanism formed from two simple planetary mechanisms of James (mechanism of type ), taking into account their structural diagrams and design constraints, determined by the conditions of contact and bending strengths of external gearing of sun gears and satellites, is offered. A model is a dimensionless function (analogue of mass) of two variables – transmission relations of simple planetary mechanisms, and set of numerical parameters. As parameters of analogue of mass coefficients are chosen, characterizing the models of mass of gear wheels and carriers, structural and strength limitations of the external gearing of simple planetary mechanisms of the type , and also structure of these mechanisms. In the program Mathcad differential properties of the offered model and influence on position of minimum of analogue of mass are investigational depending on the numerical values of his parameters. Documents of the Mathcad program are presented that implement computer modeling of algorithms for parametric optimization of mass closed planetary mechanism, where the function of the analogue of the mass of the given mechanism is used as the objective function. A comparative analysis of minimizing the design mass of two kinematic schemes of planetary mechanisms is considered – closed planetary mechanism and in-line planetary of the type . Keywords: simple planetary mechanism of James, simple planetary mechanism type ; closed planetary mechanism; in-line planetary mechanism; mass of closed planetary mechanism; contact strength of gearing; bending strength of gearing; parametric optimization; parametric optimization of mass of planetary mechanism
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Borisenko, L. A. "Principles of construction and classification of planetary gearing mechanisms with flexible links." Вестник Белорусско-Российского университета, no. 4 (2008): 69–75. http://dx.doi.org/10.53078/20778481_2008_4_69.
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Starzhinsky, V. E., S. V. Shil’ko, E. M. Petrokovets, V. V. Supin, E. V. Shalobaev, and Y. I. Gutman. "Computer-aided design and adoption of standard software on gearing." IOP Conference Series: Materials Science and Engineering 393 (August 10, 2018): 012044. http://dx.doi.org/10.1088/1757-899x/393/1/012044.
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Guo, Xiao, Nabeel Shirazee, Guo-Ping Liu, and Jonathan Williams. "Design and implementation of an innovative electronic magnetic gearing motor." Systems Science & Control Engineering 5, no. 1 (December 7, 2016): 9–15. http://dx.doi.org/10.1080/21642583.2016.1262800.
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Tien, Tran Ngoc, and Nguyen Hong Thai. "A NOVEL DESIGN OF THE ROOTS BLOWER." Vietnam Journal of Science and Technology 57, no. 2 (April 5, 2019): 249. http://dx.doi.org/10.15625/2525-2518/57/2/13094.
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This paper reports a novel curve developed from non - circular gearing theory, which can be applied in rotor profile design of the two - lobe Roots blower. The formulas for calculating the volumetric efficiency and specific flow rate of the blower have also been established. To evaluate this type of the Roots blower, the volumetric efficiency and specific flow rate are being compared with those parameters of the two traditional designs and one recent variant.