FEM的带肩螺母成形工艺分析及模具设计+CAD图纸
毕业论文关键词： 冷挤压；DEFORM；成形分析；模具设计
The Forming Technology Analysis and Die Design of Flanged Nut Based on DEFROM（II、IV、VI）
Abstract: This subject is the forming analysis and tooling design of flanged nut(II、IV、VI). The method of forming technology is cold extrusion. Firstly, make the forming simulation that use DEFORM to do FEM analysis. Analysis the status of mechanical stress in the forming process. Choose the part material according to the peculiarity of the product. Analysis the forming technology. Decision the method of forming. Make choose about the method of deal with the workblank. Use FEM to analysis the technology. Make the forming simulation by DEFORM-3D. Then improve our engineering technology. Die deign in the plant of NX UG. Make decision about the structure of our tooling. Decision the die parts’ dimension according to the standard of tooling parts. Use the typical design method to project the forming die parts. Use the combined type prestress die. Design the put off parts equipment. Design the equipment to push parts out. According to the results of the DEFORM analysis that include the speed of forming and the power of stress, we make decision of the material of the die parts, and choose the power equipment, etc.
Key words: Cold Extrusion; DEFORM; Forming Analysis; Die Design
目 录
1 冷挤压概述 1
1.1 冷挤压的分类 2
1.2 冷挤压的特点 2
1.3 冷挤压的发展现状 2
1.4 冷挤压工艺的的发展方向 2
2 工艺分析及制定 4
2.1 带肩螺母成形工艺分析及模具设计的课题背景 4
2.2 塑件的几何形状及结构设计 8
2.3 材料的选择 4
2.4 工艺方案的分析 8
2.5 毛坯制备及处理 8
2.5.1 毛坯的制备 13
2.5.2 毛坯的软化 13
2.5.3 毛坯的润滑与表面处理工艺 13
3 DEFORM成形模拟分析 9
3.1 DEFORM前处理 9
3.2 成形模拟结果分析 10
4 冷挤压设备的选择 11
4.1 冷挤压设备的基本要求 11
4.2 压力机设备的选择 11
5 冷挤压模具设计 16
5.1 冷挤压模具结构特点 16
5.2 冷挤压模具的分类 16
5.3 冷挤压模具的设计 4
5.4 凹凸模的设计 8
5.4.1 复合挤压凸模的设计 13
5.4.2 组合式预应力凹模 13
5.5 卸料与顶料装置 4
5.5.1 卸料装置 13
5.5.2 顶料装置 13
5.6 挤压凸凹模制造公差 8
5.7 冷挤压的模具结构和工作原理 8
6 模具材料的选择 18
6.1 模具材料选择的基本要求 18
6.2 模具材料的选用原则 19
6.2 常用的冷挤压模具材料 19
结论26
谢辞27