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 錄
摘 要 Ⅴ
Abstract Ⅵ
目 錄 Ⅶ
第一章 緒論 1
1.1 引言 1
1.1.1 塑料及塑料工業的發展 1
1.1.2 塑料成型在加工工業中的地位及發展趨勢 1
1.1.3 我國模具技術的現狀及發展趨勢 2
1.2 模具CAD/CAM簡介 3
1.3 基于UG、Cimantron軟件CAD／CAM功能的應用研究 5
1.3.1 UG軟件CAD／CAM功能..5
1.3.2 Cimantron軟件CAD／CAM功能.6
1.4 小結 7
第二章 產品工藝性分析及成型工藝 9
2.1 產品的工藝性分析 9
2.2 產品塑料成型工藝 10
第三章 注塑模具的結構及分型面選擇 13
3.1 模具總體結構設計 13
3.2 注射成型模具分型面的選擇 14
3.3 注射機的選擇 15
第四章 澆注系統設計 18
4.1 澆注系統的組成 18
4.2 澆注系統的設計 18
4.2.1 主流道的設計 19
4.2.2 澆口的設計 20
第五章 成型零件的結構設計 22
5.1 成型零件工作尺寸的計算 22
5.1.1 型腔和型芯徑向尺寸的計算 22
5.1.2 型腔深度和型芯高度尺寸的計算 23
5.2 成型零件的強度與剛度的計算 23
5.2.1 矩形型腔側壁的計算 24
5.2.2 支承板厚度的計算 25
第六章 注射成型模具結構零件的設計 26
6.1 導向零件的設計 26
6.1.1 導向零件的作用 26
6.1.2 導向零件設計原則 26
6.2 支承零件的設計 28
6.2.1 固定板、支承板 28
6.2.2 墊塊（支承塊） 28
6.2.3 動定模座板 29
第七章 推出機構及冷卻系統的設計 30
7.1 推出機構的分類及設計原則 30
7.2 側抽芯機構的設計 31
7.3 冷卻系統的設計 31
第八章 型腔CAM分析 32
8.1 刀具的選擇原則.. 32
8.2 加工過程中切削用量的確定 33
8.3 走刀方式的確定……...33
8.4 銑削方式的確定……...34
8.5 刀具路徑的規劃……...34
8.5.1 型芯刀具路徑的規劃….35
8.5.2 型腔刀具路徑的規劃…....36
第九章 總結 38
參考文獻 39
致 謝 40
