A comparative analysis of the geometrical surface texture of a real and virtual model of a tooth flank of a cylindrical gear

摘要

The paper presents the methodology of modelling tooth flanks of cylindricalgears in the Cad environment. The modelling consists in a computer simulationof gear generation. A model of tooth flanks is an envelope curve of a family ofenvelopes that originate from the rolling motion of a solid tool model inrelation to a solid model of the cylindrical gear. The surface stereometry andtopography of the tooth flanks, hobbed and chiselled by Fellows method, arecompared to their numerical models. Metrological measurements of the real gearswere carried out using a coordinated measuring machine and a two - and athree-dimensional profilometer. A computer simulation of the gear generationwas performed in the Mechanical Desktop environment.