摘要在我们平时的日常生活中，我们对于各种塑料制品的需求量越来越大，这 也就导致了注塑模具地无处不在。然而，人们希望这些所需要的塑料制品，在要 求上不仅要具有满足他们一定需求的功能，而且在外观上也要满足人们的审美要 求，看来赏心悦目。73908

本设计通过 3D 建模，数控自动编程，熟悉掌握 UG、CAD 软件的应用，整个 设计包括三维建模、模具设计和数控加工三个部分，其内容贯穿了大学四年学习 的知识。通过实际生产，模具设计、数控加工工艺设计和加工程序的研发,每一 个或接近实际应用程序。设计系统介绍了塑料成型工艺，浇注系统设计和装配结 构设计以及数控加工的具体过程。在参考国内的基础上基于三维工程软件 UG 进 行复杂的球面零件模型重建和整个论文主要在以下方面进行更详细的研究：

1）利用 UG 进行复杂球面件 3D 建模，造型设计。

2）采用 UG 对模具的分型面进行设计。

3）通过计算和分析，完成了复杂球面件整幅模具设计。

4）利用 Mastercam 进行仿真加工，生成其走刀路线图 关键词： 3D 建模 模具设计 数控加工

Complex curves 3D modeling, mold design and CNC machining

Abstract In our usual daily life, we are increasing the demand for all kinds of plastic products, which also led to the injection mold everywhere。However, it is hoped that these require plastic products, not only to the requirements they have to meet certain needs of function, but also in appearance but also meet people's aesthetic requirements, it seems pleasing。

This design through 3D modeling, CNC automatic programming, familiar with UG, CAD software applications, including the contents of the entire design three-dimensional modeling, mold design and CNC machining of three parts, the contents of knowledge throughout the four years of college study。 Actual production, mold design, process design and development of NC machining program, or nearly every practical application。 Design Systems introduces the specific process of plastic molding process, gating system design and assembly design and CNC machining。 In reference to the country on the basis of complex parts of the spherical model reconstruction and the entire paper-based three-dimensional engineering software UG mainly for more detailed studies in the following areas:

1） Use UG complex spherical piece 3D modeling, design。

2） Using UG mold parting surface design。

3） Through calculation and analysis, we completed the entire complex curves deputy mold design。

4) the use of UG generation tool machining line, CNC machining。

Keywords： 3D modeling mold design Complex curves

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 国外塑料模具发展概况 1

1。3 我国塑料模具发展概况 1

1。4 本文研究内容 2

2 零件的建模过程 3

2。1 建立球面草图 3

2。2 形成球面 3

2。3 画出外部圆台草图 4

2。4 形成圆台特征