球头铣刀数控加工表面形貌几何仿真的研究

几何仿真是建立铣削力预测模型的基础,而传统的几何仿真只考虑刀具的平动而忽略其转动。本文在同时考虑刀具平动和转动的基础上,利用工件Z-Map表示模型和刀刃离散表示法,提出了一种球头铣刀三轴数控铣削的微观几何仿真算法。该算法鲁棒性好、适用范围广,不仅能高效而准确地仿真铣削表面形貌,而且能准确提供切屑的轮廓,为建立精确的切削力预测模型提供了重要的几何参数。

Research of micro-geometric simulation for ball end milling

Micro-geometric simulation is the base of force prediction model.Traditional geometric simulation just considers the cutter's translation except its rotation.Taking both the cutter' s translation and rotation into account,based on the Z-Map workpiece model and the discrete cutter model,an algorithm for micro-geometric simulation of ball end milling is presented.The algorithm is robust and applicable.It provides not only the efficient and exact milling process simulation,but also the precise profile of the chip,which is the most important foundation of the force prediction model.