摘要
为解决铝合金车轮CNC机械抛光时材料去除的均匀性问题,在假设抛光工具与铝合金车轮表面的接触服从椭圆赫兹接触的前提下,利用Preston方程推证了车轮抛光时沿抛光轨迹在抛光点处的材料去除深度理论模型。模型表明,材料去除深度与法向抛光力的三分之二次方成正比,与进给速度成反比,与抛光工具和车轮的相对速度切向分量成正比。此外,刀触点的等效半径对材料去除深度有显著影响。仿真和试验结果有较好的一致性,说明该建模方法是可行的。
To finish the uniform material removal of aluminum alloy wheel surface under various conditions, assuming that the contact between the polishing tool and the wheel surface was the elliptical Hertzian contact, the theoretical equation of the material removal depth was derived from the Preston equation,which was ortbogonal to the tool path. The model shows that the material removal depth is proportional to two--thirds power of the normal polishing force and the relative tangential velocity component between the polishing tool and wheel, and is inversely proportional to the feed rate of polishing tool. And the equivalent radius of convex wheel surface plays an important role on MRD. The experimental results agree well with the model,which verifies the theoretical model.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2009年第21期2558-2562,共5页
China Mechanical Engineering
关键词
铝合金车轮
抛光
材料去除深度
椭圆赫兹接触
aluminum alloy wheel
polishing
material removal depth（MRD）
elliptical Hertzian contact
