3D parametric modeling of non circular planetary gear hydraulic motors

DOI:	10.11809/bqzbgcxb2023.02.035
Keywords:	non circular gear; planetary gear train; hydraulic motor; tooth profile; parametric modeling
Abstract:	According to the manufacturing process of a non circular gear, this paper proposes a 3D parametric modeling method of a hydraulic motor based on envelope graphic rendering and image smoothing. Taking a 4 6 hydraulic motor as an example, this paper generates a 3D model of a sun wheel and an annular gear on UG NX software platform. After assembling the sun wheel, the annular gear and the planetary gear, a non circular gear planetary gear train forms. It runs smoothly during the dynamic simulation, and there is no interference between the teeth. The periodicity of the hermetic chamber volume among the sun wheel, the annular gear and the planetary gear is in accordance with the actual operating conditions of the hydraulic motor. The results show that the precise model of the planetary gear train of the non circular gear based on the design method of virtual manufacturing process is feasible, which can quickly realize the serialization and variation design and brings great convenience to the design of hydraulic motors.
Published:	2023-02-28
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