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箱体类零件孔加工是机械加工的普遍性问题 ,对保证机械系统的装配质量及机器性能有着较大的影响 .由于加工过程中刀具的移动和切屑的剥落 ,使其成为结构不断变化情况下和力热共同作用下的变形分析问题 .本文依据非线性结构有限元分析和瞬态热分析有限元理论 ,在大型有限元分析软件 ANSYS环境下针对箱体孔加工过程变形的工程问题 ,以三维参数化设计加工工件的几何模型和力学模型 ,分析了在切削力和切削热共同作用下得到加工过程变形结果 ,采用单元死活技术和参数法循环加载技术模拟整个切削加工过程 ,得到误差敏感方向的变形及其它方向的变形和总变形及变形趋势 .所得结果揭示全面准确的变形规律 .该结果对加工过程质量控制具有现实得意义
Hole machining of box parts is a universal problem of machining, which has great influence on ensuring the assembly quality and the machine performance of the mechanical system. Due to the movement of the cutting tool and the exfoliation of chips during machining, And force and heat.The paper based on finite element analysis of nonlinear structure and finite element theory of transient thermal analysis, in a large finite element analysis software ANSYS environment for box hole machining process deformation engineering problems, three-dimensional Parametric design and processing of the workpiece geometry and mechanical model, analysis of the cutting force and cutting heat to get the deformation under the action of the process, the use of unit life and death technology and parameter method of cyclic loading technology to simulate the entire cutting process, the error-sensitive direction Deformation and other directions of deformation and total deformation and deformation trend.The results revealed a comprehensive and accurate deformation law.The results of the quality control process has a realistic meaning