Plenary Lecture

Modeling of Surfaces Machining

Lecturer Virgil Teodor
Manufacturing Science and Engineering Department
“Dunarea de Jos” University of Galati
E-mail: virgil.teodor@ugal.ro

Abstract: The problematic surfaces generation by enveloping method is known, and exists general laws for solving enwrapping problems of first degree or second degree (Olivier, Gohman).
Also, the problems of helical surfaces generation was developed at large using the method of helical movement decomposition.
At “Dunărea de Jos” University of Galaţi, during more years were developed algorithms designated to solution the surfaces generation by enveloping: the minimum distance method; the substitutive circles family method; the in plane generating trajectories method.
These methods, applied for all the enveloping generation problems (first degree problems, profiles and surfaces associated with rolling centrodes couples as so as contact problems of revolving surfaces with helical surfaces), and also second degree problems (reciprocally enwrapping surfaces with point contact, have solutions based on these new methods, characterized by these that the theorems formulation is much simplified (for the minimum distance method), a intuitive form of enwrapping surfaces, especially for the substitutive circles family method, a simplified enveloping condition for the in plane generating trajectories method.
The methods may be easy used also for a expression in discreetly form of surfaces.
The enveloping surfaces modeling, by presented methods, allow a rigorous expressing of tool’s primary peripheral surface which generates surfaces by enwrapping.

Brief Biography of the Speaker: Virgil Teodor graduated a 5 years Mechanical Engineering degree program at “Dunarea de Jos” University of Galati (1994); PhD in Industrial Engineering - at “Dunarea de Jos” University of Galati (2005); Research fields: cutting process modeling on the machine tools; surface generation with cutting tools which work by enwrapping; the surfaces generation methods study algorithmisation. Professional experience: 1994 – 2000 – Engineer at Uzinsider Engineering design institute; 2003 – 2004 – Assistant at “Dunarea de Jos” University of Galati, Manufacturing Science and Engineering Department; 2004 up to present – lecturer, in the same department.
Virgil Teodor participated in 6 research projects supported by Romanian Ministry of Education and Science; author / co-author of over 5 scientific or didactic books; over 60 scientific papers written or co-authored, published to International / National Conferences proceedings (Spain, Italy, USA, Greece, Malta) and Journals. Member of professional and scientific associations: Romanian Association for Non-Conventional Technologies - ARTN.

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