Aiming at the phenomenon that the working tooth surface of the non-circular fan of the rocker arm shaft of automobile steering gear is prone to wear,pitting and even breaking,the theoretical modeling and fi-nite element simulation of the contact stress of the tooth surface of the non-circular fan rack pair are studied.A theoretical calculation model for the contact stress of the non-circular rack and pinion pair is proposed,and the influence of geometrical parameters such as the width B of the rack,the pressure angle α of the rack and the cone angle φ of the rack on the contact stress of the tooth surface is studied.By integrating the three-di-mensional parametric modeling of the non-circular rack and pinion with the dynamic meshing finite element simulation analysis of the tooth surface,a parametric and whole-process simulation analysis method of the contact stress of the non-circular rack and pinion is proposed.It is expected to provide theoretical and methodi-cal guidance for the design and analysis of the non-circular rack and pinion pair of automotive steering gear.
维普
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