Abstract
The plastic products and plastic mold industry are of great importance of in national economy. The injection mold design of a Mobilephone’s cover was completed in the dissertation. This article has designed a plastic injection mold for the washing machine’s cover. The software tools of UG、Cimantron and AutoCAD are mainly used in the design process，and the advantages of computer-aided design programs was fully utilized to achieve the design scheme. Firstly, the author chose a single parting surface for the mould according to the analysis of the plastic part craft, and finished mold parts modeling with the UG Moldwizard. Then based on the design results, all the other components assemblies were modeled in the UG, such as the modeling of ejection parts, guide parts ,and other structure parts and so on. Finally. The assembly drawing and some of the important parts drawings were made in the AutoCAD. Finally, the CAM software of Cimantron to made the cavity, the core for NC programming and simulation of processing, through Cimantron software tool path to a trajectory. As a whole the mould is simple in structure and good at working reliability. The design of this injection mold is of some significance for the fact production.
Key words：Plastic injection molds design CAD/CAM UG Three-dimensional model
目 录
摘 要 Ⅴ
Abstract Ⅵ
目 录 Ⅶ
第一章 绪论 1
1.1 引言 1
1.1.1 塑料及塑料工业的发展 1
1.1.2 塑料成型在加工工业中的地位及发展趋势 1
1.1.3 我国模具技术的现状及发展趋势 2
1.2 模具CAD/CAM简介 3
1.3 基于UG、Cimantron软件CAD／CAM功能的应用研究 5
1.3.1 UG软件CAD／CAM功能..5
1.3.2 Cimantron软件CAD／CAM功能.6
1.4 小结 7
第二章 产品工艺性分析及成型工艺 9
2.1 产品的工艺性分析 9
2.2 产品塑料成型工艺 10
第三章 注塑模具的结构及分型面选择 13
3.1 模具总体结构设计 13
3.2 注射成型模具分型面的选择 14
3.3 注射机的选择 15
第四章 浇注系统设计 18
4.1 浇注系统的组成 18
4.2 浇注系统的设计 18
4.2.1 主流道的设计 19
4.2.2 浇口的设计 20
第五章 成型零件的结构设计 22
5.1 成型零件工作尺寸的计算 22
5.1.1 型腔和型芯径向尺寸的计算 22
5.1.2 型腔深度和型芯高度尺寸的计算 23
5.2 成型零件的强度与刚度的计算 23
5.2.1 矩形型腔侧壁的计算 24
5.2.2 支承板厚度的计算 25
第六章 注射成型模具结构零件的设计 26
6.1 导向零件的设计 26
6.1.1 导向零件的作用 26
6.1.2 导向零件设计原则 26
6.2 支承零件的设计 28
6.2.1 固定板、支承板 28
6.2.2 垫块（支承块） 28
6.2.3 动定模座板 29
第七章 推出机构及冷却系统的设计 30
7.1 推出机构的分类及设计原则 30
7.2 侧抽芯机构的设计 31
7.3 冷却系统的设计 31
第八章 型腔CAM分析 32
8.1 刀具的选择原则.. 32
8.2 加工过程中切削用量的确定 33
8.3 走刀方式的确定……...33
8.4 铣削方式的确定……...34
8.5 刀具路径的规划……...34
8.5.1 型芯刀具路径的规划….35
8.5.2 型腔刀具路径的规划…....36
第九章 总结 38
参考文献 39
致 谢 40
