Wyniki wyszukiwania - BazTech

1

Badanie wpływu parametrów geometrycznych kieszeni prostokątnej oraz warunków realizacji procesu skrawania na drgania podczas frezowania trochoidalnego

Józwik J., Kobyłka M.

Postępy Nauki i Techniki

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2011

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nr 8

37-44

PL

Obróbka trochoidalna pozwala na usuwanie relatywnie dużej objętości materiału obrabianego w minimalnym czasie. Omówiono generowanie trochoidalnej ścieżki narzędzia podczas frezowania w systemie NX 7.5. Dokonano analizy drgań w przedmiocie podczas frezowania trochoidalnego kieszeni prostokątnej.

EN

Trochoid machining allows for the removal of relatively large volumes of material processed in minimal time. Explained are generation the trochoidal tool path in the NX7.5. The analysis of the vibrations in the workpiece during trochoidal milling has been made.

2

Trajectory of the apex seals of the wankel rotary engine

Drogosz P.

Journal of KONES

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2011

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Vol. 18, No. 2

117-122

EN

This article describes the basic principles for determining the trajectory of the apex seals of Wankel rotary engines. An attempt is made as the Wankel engine seems to be the convenient as the burning hydrogen fuel engine. The main advantage is particularly intensive cooling. The main disadvantage is high pollution of combustion gases. Analyzing the working constructions it is possible to find the main sources of pollution. After all it seems that specific work of rotating piston seals are the main reason of usage big volume of lubrication oil. But part of lubrication oil is burnt together with the fuel increasing the pollution. Even using hydrogen as fuel it remains difficult to meet EURO V regulations of combustion gases pollution made by transport vehicles. Every possibility of volume reduction of lubrication oil is important. In the article the trajectories of apex seals are discussed. As the mathematical model of trajectory a special formula of trochoid was chosen. The main advantages of the chosen form of mathematical equation are applications of two main parameters: curve size parameter and dimensionless curve parameter. These two parameters decided about convenience in changing volume of internal combustion engines and comparisons of performance characteristic of different Wankel engines. In other publications connected with Wankel motors more complicated mathematic formulas are still used.

3

Trochoid application to seed solid section mapping

Drogosz P., Mańkowski S.

Technical Sciences / University of Warmia and Mazury in Olsztyn

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2003

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nr 6

57-64

EN

The paper presents different forms of trochoid equations which may be used for describing the geometry of solid sections formed by seed outer surfaces. Special attention was paid to the possibility of choosing a given type of a trochoid equation with its modifications, as well as to the possibility of selecting parameters and coefficients characteristic of a given equation form.

PL

W pracy przedstawiono różne postacie równań trochoid, które mogą posłużyć do opisu geometrii przekrojów brył, jakie tworzą powierzchnie zewnętrzne nasion. Wskazano przy tym na możliwość wyboru rodzaju równania trochoidy wraz z jego modyfikacjami, jak również na możliwość doboru wartości parametrów i współczynników występujących w wybranej postaci równania.