摘要
基于对铝合金薄壁件切削加工的经验积累,归纳总结了汽车功能主模型中铝合金薄壁零件的切削加工变形的控制技术。有限元分析法被用于分析切削加工引起的弹性变形,以检验和优化加工工艺设计方案。同时,还系统分析了加工基准的设置、工艺桩位置的布置、铣刀材质的比较、冷却液的选用、CAM编程刀具轨迹的优化以及特殊形状的分型问题等方面对加工变形的控制技术。上述技术已在实际加工中获得成功应用,这些技术对其他领域的薄壁件加工变形控制也有很强的指导意义。
Based on the knowledge accumulation on the cutting of aluminum alloy thin-wall component,the methods to control the cutting deflection during the key component fabrication of cubing for the whole vehicle model were summarized systematically. The FEM was used to predict the cutting-induced e- lastic deflection,which is of help to verify and optimize the machining process plan. Meanwhile ,The key techniques were also elaborated in the aspects of cutting baseline setup ,distribution of the positions for process stakes, comparison of the milling cutter materials, selection of the coolant, optimization of the CAM cutting path and the parting line for the special geometries. The above techniques have been successfully utilized in practice ,and those technologies is also valuable for the cutting deflection control in other fields of thin--wall component machining.
出处
《机械设计与制造》
北大核心
2010年第2期246-248,共3页
Machinery Design & Manufacture
