Open AccessEXTERNAL ROLLING OF A POLYGON ON CLOSED CURVILINEAR PROFILE
Author(s) -
Serhii Pylypaka,
Mykola Klendii,
Viktor Trokhaniak,
Тетяна Кресан,
Iryna Hryshchenko,
Andrii S. Pastushenko
Publication year - 2021
Publication title -
acta polytechnica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.207
H-Index - 15
eISSN - 1805-2363
pISSN - 1210-2709
DOI - 10.14311/ap.2021.61.0270
Subject(s) - helicoid , curvilinear coordinates , polygon (computer graphics) , cylinder , surface (topology) , kinematics , process (computing) , engineering , mechanical engineering , field (mathematics) , geometry , engineering drawing , computer science , mathematics , physics , classical mechanics , frame (networking) , pure mathematics , operating system
The design of a helical surface tillage tool made of a developable helicoid section has been calculated using the methods of analytical and differential geometry, the theory of surfaces, the systems of computer-generated graphics and mathematics. A helical tool in the form of a skeleton cylinder made of bars, where there is a helical surface made of arranged sheet metal, has been developed. Such a design prevents a helical surface from becoming clogged with soil. The suggested tool operates as a roller and the soil can easily pass through the gaps between the bars. New helical harrow tools have been designed and made for this experiment. An experimental harrow equipped with helical tools has been made and used to conduct a field research. The research was aimed at determining the optimal kinematic parameters and the pattern of field movement, which allow performing the technological process of soil tillage with the performance indices that meet the agricultural requirements.