ModTech International Conference - New face of TMCR Modern Technologies, Quality and Innovation - New face of TMCR 20-22 May 2010 307 MODERN METHODS OF CALCULATION AND MODELLING OF THE CYLINDRICAL GEARS Adrian Mihai Goanta1 1 University “Dunarea de Jos” of Galati -Romania, Faculty of Engineering in Braila, Research Center for Mechanics of the Machines and Technological Equipments Corresponding author: Adrian Mihai Goanta, goanta_a_m@yahoo.com Abstract: This paper aims to briefly present the method of calculation and generation of a cylindrical right-side teeth gear including the associated tress by means of engineering applications of Solid Edge V. 20. The tree calculation algorithm is clearly superior to the classical method of calculation, because in the response calculation it takes into account the shaft mass as well. Consequently the diagram of the shearing forces and bending moments obtained are different from those obtained based on the classic resistance calculation. Superiority may be accounted for by the rapidity and accuracy of the results obtained. Also, the method allows the user to choose the type of gear (internal or external), output geometric method, the resistance method on which calculation is based, the correction method indicating where correction is to be applied etc. Key words: CAD/CAE, Solid Edge, 3D, modelling, design