Vol.2, No 2, 2000
pp. 109-115
UDC 514.18(045)=20
ROTARY SURFACE DRAWING IN OBLIQUE AXONOMETRY
Jaklina Jivkova, Natasha Dicheva
Bulgaria, Sofia, boul. Hr. Smirnensky 1, University
of Architecture,
Civil Engineering and Geodesy, Department of
Descriptive Geometry
Abstract. In the present research a simple
construction for rotary surface drawing is shown in oblique axonometry
using only the vertical projection of the surface, which is the significant
one. An additional vertical plane is considered and a Monge projection
model is introduced. The method of the tangent cones and cylincers is used
and a formula for determination of its contour generants is proved. An
example of a rotary surface is shown in a cabinet projection, using the
constructions.
Key words: rotary surface, oblique axonometry,
construction
CRTANJE OBRTNE POVRŠI U KOSOJ
AKSONOMETRIJI
U prezentovanom istraživanju prikazuje se jednostavna
konstrukcija za crtanje obrtnih površi u kosoj aksonometriji korišćenjem
samo karakteristične frontalne projekcije površi. Razmatra se i dodatna
vertikalna projekcija i uvodi se model Monžove projekcije. Koristi se metoda
dodirnih konusa i cilindara i dokazuje formula za određivanje generanta
konture. Korišćenjem izložene konstrukcije dat je primer crtanja obrtne
površi.
Ključne reči: obrtna površ, kosa aksonometrija,
konstrukcija
