Wyniki wyszukiwania - BazTech

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Durability of involute gear pairs manufactured by rapid prototyping methods

Kozik Bogdan, Pisula Jadwiga, Dębski Mariusz, Dziubek Tomasz

Polimery

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2025

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Vol. 70, nr 5

340--344

EN

The durability of cylindrical spur gears made of ABS and PU manufactured using the FDM (Fused deposition modeling) additive method and vacuum casting was investigated. The tests were carried out for pairs of gears with an involute profile for three values of the profile angle: 20, 25 and 30° to determine the effect of the profile angle on the gear operation time. The effect of running-in on gear durability was also assessed.

PL

Zbadano trwałość walcowych kół zębatych o zębach prostych z ABS i PU wykonanych metodą przyrostową FDM (Fused deposition modeling) i odlewania próżniowego. Badania przeprowadzono dla par kół zębatych o zarysie ewolwentowym dla trzech wartości kąta zarysu: 20°, 25° i 30° w celu określenia wpływ kąta zarysu na czas pracy przekładni. Oceniono również wpływ docierania na trwałość przekładni.

2

Analysis and optimization of epicyclic mechanisms with mutually meshed satellites for engineering and industrial applications

Bozherikov S., Uzunov H., Dechkova S., Tsoneva M.

International Journal of Applied Mechanics and Engineering

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2025

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Vol. 30, no. 2

62--88

EN

This study presents an in-depth kinematic and dynamic analysis of an epicyclic gear mechanism with mutually engaged satellites, aiming to optimize its characteristics and overall efficiency. The primary objective is to analyze its operational performance and propose optimization solutions to enhance its effectiveness. The research focuses on the complex interactions between the satellites, which ensure even load distribution, reduce localized stresses, and increase load capacity. Key parameters of the gears, including the shape of the involute profile, have been analyzed to minimize wear and extend the service life of the mechanism. Mathematical models based on the finite element method (FEM) were utilized to conduct simulations that illustrate the impact of various loads and operating conditions on the mechanism's durability and performance. Additionally, simulations conducted in the CAD environment of SolidWorks allowed for the optimization of the gear design and other system components, achieving significant efficiency under high-load operating conditions. The results indicate that this type of mechanism is particularly suitable for applications in industries such as automotive engineering, aerospace technology, and the energy sector, where reliability, durability, and precision in operational processes are of critical importance.

3

Analysis of possibility of applying atypic al meshing in driving units of cars

Kozik B., Budzik G., Pacana J.

Journal of KONES

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2009

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Vol. 16, No. 2

225-230

EN

A constant tendency in the development of gear transmission is aiming for increasing its load capacity and minimalizing its outside dimensions and weight. It is particularly important in automotive vehicles. In every type of transmission, among others in gear-boxes, mainly involute profile wheels are used. The work presents analysis of possibility of applying a typical meshing in driving units of cars. This kind of meshing can be alternative to involute meshing which is most widely used in gear transmission. Among existing solutions of this type, Nowikow meshing is applied most often. A different kind of concavo-convex gearing is BBW type gearing. The gearing is obtained by generation with a tool with reference profile in which tooth profile of a rack is an involute. The analysis of possibility of applying has been carried out with the exemplary concavo-convex BBW type gearing. In BBW type gearing a wheel with a smaller number of teeth has a positive profile curvature, and a cooperating wheel has a negative curvature. Teeth profiles are conjugate ones, transverse contact ratio is higher than l, so this kind of gearing may be used also in gears with straight teeth. What is more linear contact occurring along the whole width of mating teeth, in comparison to point contact in Nowikow meshing, creates possibilities of obtaining higher load capacity of gearing. BBW gearing based on involute-derivative tooth profiles is characterized by smaller sensitivity to the change of axle distance than Nowikow meshing.