3D Meshing Methods of Ball-Rolling Bearings

Majchrák, Maroš; Kohár, Róbert; Kajan, Juraj; Skyba, Rudolf

doi:10.1016/j.trpro.2019.07.111

Cited by 13 publications

(7 citation statements)

References 2 publications

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“…In order to perform the FEM analysis an HD virtual model displayed in the Figure 2 was build following the description published by Majchrak et. al., where the finite element mesh is also described [12][13][14].…”

Section: Functional Dependence Definitionmentioning

confidence: 99%

Identification of Flexspline Parameters Affecting the Harmonic Drive Lost Motion Using the Global Sensitivity Analysis

Weis¹,

Smetanka²,

Hrček³

et al. 2023

Communications

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The aim of this research was to find out the specific geometrical parameters of the harmonic drive with the greatest impact on its lost motion. Harmonic drive units are widely used in production automation, robotics and automated manufacturing systems. Virtual model of Harmonic Drive was examined using the finite element method. The analyses were performed with considering the real test conditions of high precision gearboxes with a lost motion value of 4 % of the nominal output torque. The analyses' results were then used to develop a unique approach to obtain a functional relationship between the input parameters defining the shape of the flexspline and the harmonic drive lost motion value. Subsequently, the global sensitivity analysis was performed to determine the degree of influence of the selected flexspline parameters on the harmonic drive kinematic accuracy.

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Section: Functional Dependence Definitionmentioning

confidence: 99%

Identification of Flexspline Parameters Affecting the Harmonic Drive Lost Motion Using the Global Sensitivity Analysis

Weis¹,

Smetanka²,

Hrček³

et al. 2023

Communications

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“…The entire assembly is completed in four pneumatic chucks: the first one contains a mounted roller, the second one inserts a screw, the third one presses the roller and the screw, and the fourth chuck contains a control station that verifies that the screw with roller bushing is correctly pressed. The entire assembly station is placed on a table made of ITEM profiles [14,15].…”

Section: Assembly Stationmentioning

confidence: 99%

Design of Automatic Assembly Station for Industrial Vehicles Parts

Jenis

Hrček

Brumerčík

et al. 2021

LOGI – Scientific Journal on Transport and Logistics

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Automated production and assembly lines can be considered a crucial factor in accelerating the production processes and achieving the maximum financial savings. In particular, specialized single-purpose machines can significantly reduce production or assembly time. The submitted article presents a design of a single-purpose device that is used for the automated assembly of a roller bush with a screw. These components are then used for construction and agricultural vehicles to attach other components. Naturally, the design of this specific device is more demanding in terms of time consumption, precision, detail and initial investment than similar less complicated all-purpose devices. Nevertheless, single-purpose devices turn out to be a better option in the sense of quality and profit both in the long-term and high-capacity projects, such as automotive industry, agricultural and construction machinery. The best alternative was selected from several proposals using the evaluation method. The assembly machine was designed and optimized using Computer Aided Design systems and Finite Element Method analyses. The resulting equipment was used in practice, where it significantly increased the productivity and production efficiency.

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“…Only if MIREL 812 evaluates the fault as serious and "MULTIPLE FAULT" is displayed on the screen with the option to open this menu using the navigation button, the fault status can be displayed. Due to this shortcoming, neither the operator nor the maintenance personnel are able to find out what the engine fault is [12][13][14][15].…”

Section: Fault Diagnosismentioning

confidence: 99%

Use of Technological Diagnosis in Rail Vehicle Engines Maintenance

Ondriga

Hrček

Brumerčík

et al. 2021

LOGI – Scientific Journal on Transport and Logistics

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The paper aims to classify the maintenance of internal combustion engines in 812 series diesel multiple units, to analyse operating failures, and to identify methods and procedures for determining their current mechanical condition. The paper specifies the required procedures and methods for maintenance starting from the development of the DMU (diesel multiple units) 812 series to the present. It also focuses on understanding how diagnosis and control sensors are attached in individual cable harnesses. A protocol for diagnosing combustion engine defects is proposed in the final part of the paper. A part of the paper is a proposed list of codes for individual faults to facilitate the work. Another method proposed within this paper is the definition and attachment of individual sensor connections on the engine in the EDC (Electronic Diesel Control) M(S) 5 cable harness. Faults leading to engine stop are identified.

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3D Meshing Methods of Ball-Rolling Bearings

Cited by 13 publications

References 2 publications

Identification of Flexspline Parameters Affecting the Harmonic Drive Lost Motion Using the Global Sensitivity Analysis

Identification of Flexspline Parameters Affecting the Harmonic Drive Lost Motion Using the Global Sensitivity Analysis

Design of Automatic Assembly Station for Industrial Vehicles Parts

Use of Technological Diagnosis in Rail Vehicle Engines Maintenance

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