电机壳体冲压成形工艺与模具设计
32000字 40页
摘 要
板料冲压成形是一种十分重要的金属塑性加工技术，在工业领域有着极为广泛的应用。然而，板料成形要经过复杂的变形过程，因此，合理地确定板料成形工艺和模具结构都对保证产品的质量以及生产的稳定性和持续性至关重要。本文研究的电机壳体用于固定电机的位置并构成电机形状和外壳。按产品要求零件表面平整，无翘曲、皱折、裂纹等缺陷。但该零件的筒壁为异型形状且零件的高度较大，成型工艺性相对较差，这些特点决定了零件工艺方案的多样性和工艺补充部分和成形方式的复杂性。
本文采用三维造型软件UG造型，并根据塑性成形基本原理和部分板料成形的工艺知识、设计规范以及设计经验，对电机壳体的成形工艺进行了研究；在对零件冲压工艺性分析的基础上，对各个工序可腀@鱿值墓ひ辗桨附卸员确治觯钪杖范撕侠淼墓ひ辗桨浮８菟范ǖ墓ひ辗桨付愿鞲龉ば蚰＞呓猩杓疲瓿闪顺尚文＞呓峁挂约肮丶慵纳杓啤Ⅻbr>
关键词：电机壳体，冲压，成形工艺，模具设计
ABSTRACT
Sheet metal forming is a very important plastic working technology which has been widely used in industrial domains. However, sheet metal forming experiences very complicated deforming processes, which make it very important for the proper decision of the process and die in order to improve the quality and continuity of products and guarantee the production reliabilities. This paper researches electric engine shell, which is used to fix the position of electric engine and form the shape and shell of electric engine. It demands that the part be flat, no defect of warp, wrinkle and crack and so on. But the shape of the part is allotype and the part is very high, and its forming process property is worse. These features of the piece make the forming process and process complicated and the processing plan various.
In this paper, using three-dimensional mould software UG to build the shape; then according to the plasticity deformation principle and partial process knowledge, design guidelines and design experience, the forming process of the electric engine capsid is researched. In addition, on the basis of analyzing the punch manufacturability of the piece, the possible processes in every working procedure are compared and analyzed, then the process plan are finally gained. Moulds of each process are designed in light of the optimized, and introducing the structure of the forming mould and the design of key pieces.
The result of the research here can provide reference for pieces of the same kind on forming has reference value.
Key words: electric engine capsid, punching, formative technology, die design
目 录
摘 要 ………………………………………………………………….Ⅰ
ABSTRACT ……………………………………………………………....Ⅱ
1 绪论 …………………………………………………………………1
1.1 前言…………………………………………………………………………………………..1
1.2 板料成形工艺与模具设计及其研究状况…………………………………………………..1
1.2.1 基于经验的设计…………………………………………………………………….…1
1.2.2 基于CAD的设计……………………………………………………………………....2
1.2.3 基于智能的设计……………………………………………………………………..…2
1.2.4 基于有限元的设计…………………………………………………………………..…3
1.2.5 基于快速成形的设计………………………………………………………………..…4
1.3 课题的研究意义及目的……………………………………………………………………...4
1.4 本文的主要内容………………………………………………………………………..…….4
2 电机壳体冲压工艺过程方案分析……………………………………………..….6
2.1 电机壳体冲压可行性分析………………………………………………………………..….6
2.2 确定工艺方案……………………………………………………………………………..….7
2.3 毛坯形状确定……………………………………………………………………………..….7
2.3.1 零件底部的圆筒形凸台……………………………………………………………..…7
2.3.2 零件底部的第二个凸台……………………………………………………………..…8
2.3.3 异型筒壁……………………………………………………………………………..…8
2.3.4 凸缘的表面积………………………………………………………………………..…8
2.3.5 零件总的表面积……………………………………………………………………..…9
2.4 零件排样……………………………………………………………………………………...9
2.5 拉伸次数确定及各次拉伸直径………………………………………………………..…….9
2.5.1 确定第一次拉伸直径和拉伸高度………………………………………………..…..10
2.5.2 校核第一次拉伸高度……………………………..
