塑料模具课设计说明书.docVIP

塑料模具设计课程说明书 设计题目 塑料模设计 机械工程院（系）材料成型专业 班级 材料 0903学号09432322151608 设计人周俊 指导教师 肖鹏 完成日期2012年4月21日 一、题目 设计题目一般为设计一个较简单的注塑模具，制件结构不要求复杂，但至少具备以下三个内容之一：三板模、有三维曲面、一模多腔。 具体题目由题库中抽取，由学生完成实测、建模后，将图纸缩小后插入下面位置： 二、材料和精度要求： 材料一般为PE、PP、ABS、PVC、PS等常用热塑性塑料，尺寸精度一般要求配合尺寸达MT3，其它尺寸MT5，表面粗糙度一般不透明件外表Ra0.8，透明件内外均为Ra0.4。对具体题目的要求，由学生在实测和绘图过程中确定，经指导老师认可后，在塑件图纸上明确表达出来。塑件图纸要由指导老师审核签字。 三、生产纲领： 2万件/年 10万件/年 30万件/年 50万件/年 四、要求完成的内容： 每个学生应完成以下工作量： 使用计算机绘制产品图纸一张，要求有三维立体图和足够的投影视图。 完整的模具装配图一张（A1）。 模具三维爆炸图一张。 二维模具工作图一套。 全套模具零件图（包括所有非标准件、及有加工要求的标准件）一套。 塑件生产工艺卡一张。 典型零件（一般为型腔或型芯、滑块、镶块等）的加工工艺规程一套（可选）。 典型零件的数控加工程序一套（可选）。 设计说明书一份。 目录 一、塑料成型工艺分析 ·········································································6 1、塑件的分析 ·················································································6 2、ABS工程材料塑料的性能分析 ················································· 6 3、ABS的注射成型过程及工艺参数 ···········································8 二. 拟定模具的结构形式和初选注射机·············································8 1、分型面位置的确定 ···································································9 2、型腔数量和排位方式的确定 ····················································9 3、注射机型号的确定 ····································································9三、浇注系统的设计 ···········································································11 1、主流道的设计 ············································································11 2、分流道的设计 ········································································· 12 3、浇口设计 ··················································································13 4、校核主流道的剪切速率 ··························································14 5、冷料穴的设计及计算 ····························································· 14 四、成型零件的结构设计及计算 ····················································· 15 1、成型零件的结构设计 ····························································15 2、成型零件钢材的选用 ·············································