Abstract
Abstract
The gear cutting process is generally simulated by solving the simultaneous system equations derived from the theory of gearing. However, in the presence of undercutting or secondary enveloping, the solution to these equations is numerically unstable. Hence, this paper proposes a simplified pseudo-planar gear cutting simulation method using ObjectARX in an AutoCAD environment. In this method, execution of a script file generated by Visual C++ allows simulation of the gear cutting process and calculation of the gear tooth profile without the need to solve simultaneous system equations. The generated thread—s tooth profile is obtained by subtracting the cutter locus from the workpiece—s transverse section. Since the entire process occurs in the transverse plane, it is more rapid than three-dimensional computer-aided design software calculations. Additionally, as illustrated by the numerical examples of cylindrical gear form grinding and hypoid gear face milling processes, respectively, the proposed method is applicable to cylindrical gear and bevel gear cutting simulation. It can also be applied in the case of undercutting or secondary enveloping.