DEFORM叶片切边过程有限元分析及模具优化设计
时间:2022-05-14 21:05 来源:毕业论文 作者:毕业论文 点击:次
摘要叶片是汽轮机、航空发动机和燃气轮机上极为重要的零件之一,由于叶片工作环境的限制、较高的使用力学性能要求以及本身复杂的形状尺寸,在叶片的生产制造中,需要有较好的生产工艺和合理的模具参数设计。叶片切边过程比较复杂,一般都是采用过程数值模拟来研究。通过对切边模工艺的分析进行模具设计和使用deform软件对切边模具的优化设计将成为切边模生产设计部分中比较重要一个环节。80614 在本文中,首先,运用UG软件通过叶片锻件的三维模型设计出锻造模具和叶片成形切边模具的三维造型图。其次,在deform软件中对设计的锻模三维造型进行数值模拟,锻出带有一定飞边的终锻件,然后再对终锻件的切边过程进行数值模拟仿真。通过改变切边模具的凸凹模间隙值和冲头的切边速度,对比锻件切边过程中的切边光洁面情况和模具所受负载的变化情况,得到凸凹模间隙值与叶片切边光洁面变化曲线以及切边速度与模具所受负载的曲线。最后根据模拟结果选择合适的凸凹模间隙和冲头切切速度,对模具参数进行优化处理。 毕业论文关键词:叶片切边模具;模具优化设计;冲裁间隙;有限元模拟 Abstract Blade is one of the most important parts of the turbine, aero engine and gas turbine。 Due to the limitation of blade working environment,high mechanical requirements and their own complex shape and size in the blade manufacturing, it needs to have better production and reasonable parameters design。 Due to trimming process more complicated, it generally is based on numerical simulation to study。 Through of trimming die process analysis of mold design and using DEFORM software of cutting edge optimization design of die will become the cutting edge mould design is more important one link。 Numerical simulations numerical simulations for 3D modeling and design in this paper。 The first step, using UG software through the blade forgings of three-dimensional model of forging die blade forming trimming die 3D modeling, the second step in the DEFORM software to design of forging die, forging a flash of the final forging, and then the final forging process simulation。 In the second step, by changing the trimming die punch die clearance values and punch cutting edge speed, in contrast to the workpiece edge cutting process of cutting surface smooth and clean surface and mold the load changes, punch and die gap value and the blade cutting edge smooth and clean surface change curve and shear strain And mold load curve。 Finally according to the simulation results, the choice suitable clearance between punch and die and punch edge cutting speed, to optimize the parameters of die。 Keywords: Blade trimming die;optimal design for trimming die;blanking clearance;finite element modelling 目 录 第一章 绪论 1 1。1 引言 1 1。3 锻造与切边过程基本理论 3 1。3。1 锻造成型过程 5 1。3。2 锻造过程的应力应变分析 5 1。3。3 切边模凸、凹模间隙 8 1。4 课题研究内容 8 第二章 UG软件介绍及切边模三维造型 9 2。1 UG软件介绍 9 2。2 切边模的三维造型设计 9 2。2。1 锻件坯料分析 10 2。2。2 绘制分模面 (责任编辑:qin) |