SH130轴承罩挤压工艺分析及模具设计+CAD图纸
毕业论文关键词：冷挤压；轴承罩；工艺分析
Extrusion process analysis and die design of SH130 bearing cover
Abstract：This paper introduces the process of extrusion process analysis and die design of SH130 bearing cover for cold extrusion parts. The following is the main content：The use of computer 3D modeling software NX to establish three-dimensional model of SH130 bearing cover, then carries on the analysis of the process, make the process scheme; calculation of blank size, determine the processing blank; and then squeeze pressure parts deformation and the extrusion process and the total pressure is calculated according to the material, and determined according to the number of processing; cutting, cold heading and cold extrusion processing required pressure equipment selection; determine the working parts such as punch and die and mandrel in pre extrusion and extrusion process of the structure and calculate its size; select the mold, design guide mechanism, ejector mechanism and discharging mechanism; according to the selection of each frame standard parts; check between frame and press mounting dimensions; and then through the NX software for the mold parts and assembly modeling, assembly drawing Parts drawing.
Key words：cold extrusion；Bearing cover；Process analysis
目 录
1 绪论 1
1.1 我国模具发展现状 1
1.2 冷挤压工艺的实质 1
1.3 冷挤压工艺的优点 2
1.4 冷挤压工艺的缺点 3
1.5 冷挤压工艺应用范围 3
1.6 冷挤压工艺的发展方向 3
2 工艺分析及方案制定 5
2.1 挤压件材料分析 5
2.2 挤压件的工艺性分析 5
2.3 设计工艺路线 6
3 毛坯的制备 7
3.1 毛坯的体积 7
3.2 毛坯的尺寸计算 7
4 冷挤压工艺计算分析 8
4.1 影响冷挤压力的主要因素 8
4.2 变形程度 8
4.2.1 变形程度的计算 8
4.2.2 确定挤压次数 9
4.3 冷挤压力的计算 9
4.3.1 冷镦力计算 9
4.3.2 冷挤压力计算 9
5 冷挤压设备的选择 11
5.1 断料设备 11
5.2 冷镦设备 11
5.3冷挤压设备 12
5.3.1 冷挤压设备的基本要求 12
5.3.2 冷挤压设备的选用 13
6 冷挤压模具设计 14
6.1 冷挤压模具特点 14
6.2 预挤压工作部分零件设计 14
6.2.1 预挤压凸模设计 14
6.2.2 预挤压凹模设计 16
6.3 反挤压凸凹模设计 17
6.3.1 凸模设计 18
6.3.2 反挤压凹模设计 18
6.4 顶出装置的设计 19
6.5 卸件装置 21
6.6 模具结构部件设计 21
6.6.1 上模部分结构设计 21
6.6.2 下模具部分结构设计 22
6.7 导向装置 23
6.8 模架设计 24