摘要在日常生活中，人们对于各类小家电的塑料产品及日常生活用品种类的需求 越来越多，需求量也越来越大，注塑模具无处不在。

本次设计通过完成椭圆曲线曲面异型 3D 建模、模具设计及数控加工毕业设 计，进一步加深对机械制造专业相关知识的理解与认识。通过 3D 建模，数控自 动编程，熟悉掌握 CAD、CAM 软件的应用，整个设计包括 3D 建模、模具设计及数 控加工三大部分。课题与接近生产实际，通过设计，其模具设计、数控加工工艺 设计及加工程序应能达到或接近生产实际应用。对以上问题的研究是综合复杂的 过程，每一步都紧密与现实生产经营挂钩，所以我会全力以赴，在课题中进步提 高，用课题检验自己，努力做出一份完美的课题。75749

该论文有图 31 幅，表 1 个，参考文献 36 篇。

毕业论文关键词：模具设计 椭圆曲线曲面异型零件 3D 建模

Elliptic curves and surfaces shaped pieces of 3D modeling, mold design and CNC machining

Abstract In daily life, people for various small appliances plastic products and daily necessities, more and more types of demand, demand is also growing, injection mold everywhere。

The design is completed by oval shaped curve and surface 3D modeling, mold design and NC graduation design, mechanical engineering and further deepen the knowledge of understanding and awareness。 Through 3D modeling, CNC automatic programming, familiar with CAD, CAM software applications, the entire design, including 3D modeling, mold design and CNC machining of three parts。 Challenges and close to the actual production, by design, the mold design, process design and NC machining program should be at or near the actual production applications。 Study of these problems is a comprehensive complex process, every step of the production and operation closely linked with reality, so I will go all out to raise the issue in progress, with test subjects themselves, and strive to make a perfect subject。

The papers Figure 31, Table 1, reference 36。

Key Words: Mold Design Elliptic curves and surfaces shaped parts 3D Modeling

目录

摘 要 I

Abstract II

目录 III

图清单 V

表清单 VI

1 绪论 1

1。1 模具工业的地位 1

1。2 外国塑料模具发展 1

1。3 我国塑料模具发展概况 1

1。4 本文研究内容 1

2 塑件结构及成型工艺分析 2

2。1 产品建模过程 2

2。2 塑件结构分析 3

2。3 塑件的分析 4

2。4 材料选择 5

3 分型面选择及型腔数目确定 6

3。1 型腔数目的确定 6

3。2 分型面的确定 6

4 注射成型设备的选择 8

4。1 塑件体积的估算 8

4。2 选择注塑机 8

4。3 注塑成型设备的工艺参数校核