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38 Eugen Străjescu et al. 2.5 2 1.5 1 0.5 0 Fig. 10 – Intersections with frontal planes in different points. 2.32 0.48 2.05 2.01 0.56 0.62 M1 M2 M3 M4 αf 2.32 2.05 2.01 1.93 γ f 0.48 0.56 0.62 0.74 Fig. 11 – Values for the angles αf şi γf in frontal plans Pf - Pf. 1.93 0.74 αf γ f
Bul. Inst. Polit. Iaşi, t. LVI (LX), f. 2, 2010 39 4. Conclusion The method is especially useful for complex tools, small, with the active surfaces and curved cutting edges, to which access control with current instruments is very slowness or impossible and where the definition of theoretical planes control angles is difficult to apply. The other method of obtaining the 3D model through photography has its limits. Further research will develop methodologies for control of complex tools for very large or very small, with curved surfaces, methodologies able to change the angles of the long edges or surfaces with steps as small. Received: March 25, 2010 1 "<strong>POLITEHNIC</strong>A" University from Bucharest , Department of Machines and Production Systems e-mail: eugen_strajescu@yahoo.com 2 S.C. MUNPLAST S.A. e-mail: ostefu@yahoo.com 3 "VALAHIA" University from Targoviste e-mail: ddumitru@yahoo.com R E F E R E N C E S . 1. Minciu C., Stră jescu E., ş.a., Scule aşchietoare, Îndrumar de proiectare. Editura Tehnică, Bucureşti, 1995. 2. S t r ă jescu, E., Proiectarea sculelor aschietoare, Litografia I.P.Bucureşti, l984. 3. E n a c h e , Ş t., Stră jescu, E., Minciu, C., Metode şi programe pentru proiectarea asistată a sculelor aşchietoare. Litografia I.P.Bucureşti, 1988. 4. Strajescu E., Pavlov O., Metodologie de control asistat de calculator al sculelor aşchietoare pe baza unor metode neconvenionale de obţinere a modelelor 3D. Conferinţa ICEEMS, Braşov, 2005. 5. S t r ă jescu E., Pavlov O., Dumitru, D., C ontributions Concerning the Informatic Control of the Cutting Tools, International Conference on Manufacturing Science and Education - MSE Sibiu, 2009. CONTRIBUŢII PRIVIND CONTROLUL INFORMATIZAT AL CUŢITELOR ROATĂ (Rezumat) În lucrare se prezintă bazele unei metodologii pentru controlul informatizat al tuturor elementelor geometrice şi constructive ale sculelor aşchietoare în general, şi al cuţitelor roată pentru mortezat roţi dinţate cilindricve în special. Metodologia are la bază obţinerea unui model solid, iar acest lucru se poate face fie prin fotografiere, folosindu-se programe potrivite, fie prin scanare 3D, fie în faza de proiectare. Metoda propusă permite controlul absolut al tuturor parametrilor geometrici şi constructivi, în orice punct şi în orice plan, precum şi trasarea graficelor de variaţie. Se poate imagina o metodă prin care un program de proiectare asistată de tipul Solid Concept, parametrizat, să modifice unghiurile sculei pornind de la valoarea admisibilă a unui anume unghi într-un anume plan.
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