航空薄壁结构件数控加工变形控制研究

数控加工中影响工件变形的因素很多,目前国内外的研究多采用数值模拟技术分析加工的不同侧面。相对已经 比较成熟的数控加工几何仿真系统,涉及力学模型的物理仿真系统还只有初步概念。选择航空弧形结构件和长梁两种 典型易变形的零件为例,通过具体分析加工变形情况及其影响因素,针对其中三个方面:切削力、装夹布局和残余应力建 立相应的物理仿真模型,模拟加工变形情况,并提出相应的解决方案。

Research on deformation in NC machining of aerospace thin-walled structure part

Research of deformation in NC Machining was committed on aerospace structure part. Machining process is affected by a wide range of parameters, the mathematical simulation approach is less expensive and time-consuming than direct experiment. Compared with the NC machining geometry simulation,which is rather strong and systematic , the physical simulation involved in mechanics model is now mostly conceptual. Considers three aspects of actual machining process to develop computational physical simulation model for predicting deformation, stress, strain in workpiece under specific cutting parameters.