基于变形映射的多轴粗加工工序模型建立方法

发布时间：2018-05-02 01:54

本文选题：多轴铣削 + 变形映射　；参考：《机械工程学报》2017年03期

【摘要】：在多轴铣削加工中,建立准确的加工工序模型是实现航空类零件智能加工的关键技术。为了获得复杂零件准确的加工工序模型,提出一种基于变形映射的多轴粗加工工序模型建立方法。介绍变形映射技术的理论基础,建立三次埃尔米特超限插值的变形映射模型,并分析变形映射模型中影响工序模型几何形状的工艺参数;根据工艺约束的分析结果对工艺参数进行设计,并将带工艺约束的工艺参数引入到变形映射建模方法中来构造工序模型。在一类复杂航空零件上进行验证。算例表明,该方法能够在控制当前加工余量的情况下构造复杂零件多轴粗加工的工序模型,可缩短零件的总加工时间,在一定程度上改善了加工效率。
[Abstract]:In multi-axis milling, establishing accurate machining procedure model is the key technology to realize intelligent machining of aviation parts. In order to obtain accurate machining procedure model of complex parts, a method of establishing multi-axis rough machining process model based on deformation mapping is proposed. This paper introduces the theoretical basis of deformation mapping technology, establishes the deformation mapping model of cubic Hermitian's transfinite interpolation, and analyzes the process parameters that affect the geometric shape of the process model in the deformation mapping model. According to the analysis results of process constraints, the process parameters are designed, and the process parameters with process constraints are introduced into the deformation mapping modeling method to construct the process model. Verification is performed on a class of complex aeronautical parts. The example shows that the method can construct the multi-axis rough machining process model of complex parts under the condition of controlling the current machining allowance, can shorten the total processing time of the parts, and improve the machining efficiency to some extent.
【作者单位】：西北工业大学现代设计与集成制造技术教育部重点实验室;
【基金】：国家重点基础研究发展计划(973计划,2013CB035802) 国家自然科学基金(51305353)资助项目
【分类号】：TG547

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