Features of modeling bevel gear wheels with circular tooth profile in 3d modeling software

Abstract

A methodology for designing bevel gears with circular tooth profiles in 3D CAD systems is presented. Due to the lack of built-in tools for creating such types of mechanisms on platforms such as Creo, NX, and Catia, a special approach to parametric modeling is proposed. The method is based on the construction of a spherical involute surface, which simplifies the mathematical description of the gear geometry and ensures high modeling accuracy. The use of parametric equations provides full associativity in the CAD environment, facilitating rapid design changes and integration into broader engineering systems. Special attention is paid to the step-by-step procedure for designing this type of gear in the Creo 3D modeling environment. This ensures the practical applicability and reproducibility of the method for engineering purposes. The developed approach is also well consistent with additive manufacturing processes, allowing the generated models to be directly used for 3D printing without further modifications. This significantly speeds up the prototyping and production process. The effectiveness of the methodology is proven through implementation in Creo and can be adapted for other types of gears, including helical, spiral and involute teeth. The need to automate the proposed construction process using UDF tools available in 3D CAD programs or API functions is indicated.

Key words: design, gear meshing, circular tooth, spherical involute, parameterization, assembly.