洛阳理工学院毕业设计（论文）
支架冲孔落料冲压模具设计
摘 要
随着中国工业不断地发展，模具行业正在变得越来越重要了。本文针对支架弯曲件的冲裁工艺性，分析比较了成形过程中的三种不同冲压工艺（例如 单工序、复合工序与连续工序）确定用一幅级进模完成冲孔、落料工序的过程。本文介绍了支架弯曲件冷冲压的成形过程，经过对支架的批量生产、零件质量、零件结构以及使用要求的分析和研究，按照不降低使用性能为前提，将其确定为冲压件，用冷冲压方法完成零件的加工，并且简要分析了坯料形状、尺寸，以及排样、裁板方案，冲压工序的性质、数目和顺序等，并进行了冲裁力、压力中心、模具工作部分尺寸及公差的计算，并设计出模具的结构。同时具体分析了模具的主要零部件（如冲孔凸模、落料凸模、固定卸料装置、垫板、凸模固定板等）的设计与制造，冲压设备的选用，凸凹模间隙调整和编制一个重要零件的加工工艺过程。列出了模具所需零部件，并给出了合理的装配图。充分利用现代模具制造技术对传统机械零件进行了结构改进、优化设计、优化工艺方法，能大幅度提高生产效率，该方法对类似产品具有一定的借鉴作用。
关键词：固定卸料装置，级进模，冲孔落料
I
洛阳理工学院毕业设计（论文）
BRACKET PUNCHING AND BLANKINGDIE DESIGN
ABSTRACT
With the continuous development of Chinese industry, the mold industry is becoming more and more important. According to the blanking process of the stent bending, analyses and compares three different stamping process in the forming process (such as single processes, complex processes and continuous processes) to determine the process using a progressive die punching, blanking process completed. This paper introduces the frame bending forming process of cold stamping, batch production, parts of the stent, the parts of the structure and the quality of research and analysis of requirements, in line with lower performance prerequisite, which is identified as stamping parts processing, complete with cold stamping method, and a brief analysis of the blank shape, size, and layout, the conference board, stamping process nature, number and sequence, and the blanking force, center of pressure, the die size and the tolerance of the calculation, and designs the structure of die. At the same time, analyzes the mold of the main components (such as punch die, blanking punch discharging device, fixed fixing plate, plate, etc.) design and manufacturing, stamping equipment selection, machining process is an important part of punch and die gap adjustment and establishment. A list of desired mold parts, and gives a reasonable assembly. To make full use of the modern mold manufacturing technology were improved, optimization design, optimization of process method of traditional mechanical parts, can greatly improve the production efficiency, this method has certain reference to similar products.
KEYWORDS: fixed unloading device, mold design, progressive die, punching and blanking
II
洛阳理工学院毕业设计（论文）
目 录
前 言 ............................................................................................................. 6 第1章 对加工零件的工艺分析 ................................................................. 7
1.1 零件分析 ........................................................................................ 7
1.1.1 零件简图 ............................................................................. 7 1.1.2 冲压件的工艺分析 ............................................................. 7 1.1.3 分析比较和确定工艺方案 ................................................. 8
第2章 冲裁模的参数计算 ....................................................................... 10
2.1 冲压模设计计算 .......................................................................... 10 2.2 工作力的计算 .............................................................................. 12
2.2.1 落料力 ............................................................................... 12 2.2.2 冲孔力 ............................................................................... 13 2.2.3 卸料力 ............................................................................... 13 2.2.4 推料力 ............................................................................... 13 2.2.5 冲侧刃缺口的力 ............................................................... 14 2.2.6总冲压力 ............................................................................ 14 2.3 确定模具压力中心 ...................................................................... 14 2.4 计算凸、凹模刃口尺寸 .............................................................. 15
2.4.1 冲孔部分 ........................................................................... 15 2.4.2落料部分 ............................................................................ 16
第3章 结构设计 ....................................................................................... 18
3.1 冲孔凸模结构设计 ...................................................................... 18
3.1.1 计算凸模的长度 ............................................................... 18 3.1.2 凸模的强度与刚度校核 ................................................... 19 3.2 落料凸模结构设计 ...................................................................... 20 3.3凹模结构设计 ............................................................................... 22
3.3.1整体式凹模的尺寸 ............................................................ 22 3.4 模具总体设计 .............................................................................. 24
III
洛阳理工学院毕业设计（论文）
3.4.1 选择模具结构形式 ........................................................... 24 3.4.2操作方式 ............................................................................ 24 3.4.3模架类型 ............................................................................ 24 3.4.4 定位方式选择 ................................................................... 24 3.4.5 卸料与出件方式选择 ....................................................... 25 3.4.6导向方式选择 .................................................................... 25 3.4.7 定位零件设计 ................................................................... 25 3.4.8 卸料板设计 ....................................................................... 25 3.4.9垫板设计 ............................................................................ 26 3.4.10模柄选择 .......................................................................... 27 3.4.11 凸模固定板设计 ............................................................. 28 3.4.12导柱导套选择 .................................................................. 29 3.4.13 模座选择 ......................................................................... 29 3.4.14 螺钉、销钉的选用 ......................................................... 30 3.4.15 装配图设计 ..................................................................... 31 3.4.16模架的选取 ...................................................................... 31 3.4.17 冲压设备的选择 ............................................................. 32
第4章模具的技术条件 ............................................................................. 33
4.1 表面粗糙度及标准 ...................................................................... 33 4.2 加工精度 .................................................................................... 34
4.2.1 尺寸偏差 ......................................................................... 34 4.2.2 形位公差 ........................................................................... 34 4.2.3 配合要求 ......................................................................... 34
第5章 模具装配与调试 ......................................................................... 36
5.1 装配过程 ...................................................................................... 36
5.1.1 模具的装配 ....................................................................... 36 5.2 装模与试模 .................................................................................. 37
5.21 模具的安装 ......................................................................... 37 5.3 模具的调试 .................................................................................. 38 总 结 ........................................................................................................... 40
IV
洛阳理工学院毕业设计（论文）
致 谢 ........................................................................................................... 41 参考文献 ..................................................................................................... 42 外文翻译译文 ............................................................................................. 43
V