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The objective of this publication is creation of computer geometric models (CAD) of developed in Diosgyőri Machine Factory and using exact production geometry first produced (grinded) cylindrical worm gear drive having arched profile by Illes Dudas for connection analysis, Finite Element Method analysis, etc. Since the worm and worm gear wrap each other, that is why the worm gear has to be produced by a tool geometry of which is similar to the worm geometry. Knowing of the Connection I. Statement tooth surface of driven element which is wrapped by driver element is defined by numerical calculations. The CAD model of the worm gear could be designed by adaptation of interpolating B – spline surface to the tooth surface points of worm gear.

Computer Aided Geomemtric Modelling of Cylindrical Worm Gear Drive Having Arched Profile