基于NX的斜齿轮滚齿加工仿真系统设计

Design on Helical Gear Hobbing Machining Simulation System Based NX

为建立滚齿加工几何仿真与反应加工过程的物理模型之间的联系,提出了基于NX二次开发的斜齿轮滚齿加工仿真方法。首先构建了斜齿轮滚齿加工仿真系统总体结构;其次,建立了滚齿加工过程的运动学方程;然后,对工件几何实体、滚刀扫掠体、齿廓实体以及未变形切屑几何实体构建过程进行了描述;最后,对一个实例斜齿轮进行仿真加工,仿真法向齿廓与理论渐开线齿廓的比较验证了所提出方法的合理性与准确性。

To establish the link between geometric simulation and physical simulation mode/ for gear hobbing, simulation approach of the hobbing process for the manufacturing of helical gears based on NX secondary development was put forward. General structure of helical gear bobbing simulation system was developed; the kinematics equation for gear hobbing cutting process was established; the creation processes of workpiece geometric entity, swept geometric entity of the hob tooth and undeformed chip geometric entity were described; The confirmation of the validity and accuracy of the proposed method has been accomplished by comparison between the produced helical gear gap normal profile and theoretical ones.