论文总字数：20189字

摘 要

自开放以来由于我国生活水平的提高，汽车正慢慢进入千家万户，正因为汽车的逐渐普及，人们不再仅仅满足拥有一辆车，而对车的本身有了更高的要求，也就是精神上的追求------汽车的美感。人们对于一辆车是否好看的判断，首当其冲的就是一辆车的前脸，在这当中前大灯的影响力不言而喻。本课题所做的是汽车前大灯的设计，它是照明系统中的一个重要的组成部件，在如今这样一个拥有极度相似化的市场，一个品牌需要拥有自己独特的风格才能够在这样的市场里站得更稳。一个品牌需要顾虑很多因素，比如品牌的文化，形象，内涵，以及设计和便利性等，以创建自己的个性化品牌。在考虑个性化的同时，由于目前汽车的动能在不断加强，车子的急速也在不断刷新，作为汽车的车头部分，很大程度的影响了汽车行驶的风阻，那么汽车前大灯的外形设计也需要考虑对车辆行驶时风阻的影响。所以在本文需要对汽车前大灯的设计以及生产进行研究以及设计，汽车前大灯的外形，汽车前大灯的生产方式，生产前大灯的模具的设计以及优化，然后对生成汽车前大灯进行运动仿真等等环节都需要提供合理的设计思路以及优化方法。

本论文首先介绍了汽车前大灯的发展、分类。最后使用UG来制作汽车前大灯模型，导入到mastercam中进行刀具路径图生成，然后进行加工仿真。在本文主要是对汽车模具的建模，以及对mastercam的使用。目的在于了解模具生产产品的过程以及模具加工方法，对于模具加工的工艺分析过程。

关键词：汽车前大灯；结构设计；加工仿真；mastercam

Machining and simulation of a certain automobile headlight mould based on MasterCAM

Abstract

Since the opening up, due to the improvement of living standards in our country, automobiles are slowly entering millions of households. Because of the gradual popularity of automobiles, people no longer only satisfy owning a car, but have higher requirements for the car itself, that is, The pursuit of spirit-the beauty of the car. People bear the brunt of a car's front face in judging whether a car is good-looking or not. Among them, the influence of the headlights is self-evident. What this subject does is the design of automobile headlights, which are an important component of the lighting system. In the current situation of severe homogeneity of products, personalized brands are more valuable. In fact, each brand has its own characteristics and big differences, so it is less likely to be imitated by peers. Therefore, brand personalization usually needs to consider many factors, such as brand connotation, culture, image, extension, design, creativity, convenience, etc., in order to create your own personalized brand. While considering personalization, as the kinetic energy of the current car is constantly strengthening, the speed of the car is constantly being refreshed. As the front part of the car, it greatly affects the wind resistance of the car. Then the appearance design of the car headlight is also Need to consider the impact on the wind resistance of the vehicle when driving. Therefore, it is necessary to design the installation and layout position of the car window regulator in the door system, plan and design the structural frame of the car window regulator, and select the material of the car window regulator and check and optimize the design of the car window regulator. , And then improve its motion simulation and other design steps to provide a set of perfect design ideas and optimization methods.

This paper is mainly about the design of headlights. Firstly, the development and classification of automobile headlights are introduced. Finally, use UG to make the headlight model of the car, import it into the mastercam to generate the tool path diagram, and then perform the processing simulation. In this article, it is mainly the modeling of automobile molds and the use of mastercam. The purpose is to understand the mold production process and mold processing methods, as well as the process analysis process of mold processing.

Keywords: Carheadlights; Structuraldesign; Machiningsimulation；mastercam

目录

摘要 I

Abstract II

目录 III

第一章 概述 1

1.1汽车的发展 1

1.2汽车前大灯的发展 1

1.2.1煤油灯、白炽灯与卤素灯 1

1.2.2氙气大灯、LED大灯与激光大灯 2

1.3选题的背景与意义 3

第二章 前大灯模具的设计要点、种类和材料 4

2.1汽车前大灯模具的种类 4

2.1.1型腔 4

2.2.2型芯 5

2.3汽车前大灯模具材料的选取 5

2.3.1模具材料的要求 5

2.3.2新型材料钢 6

2.3.3钢材的选择 6

第三章 前大灯以及模具的三维设计 7

3.1汽车前大灯的三维设计 7

3.1.1汽车前大灯底座的三维建模 7

3.1.2汽车前大灯反光碗的三维建模 9

3.1.3汽车前大灯灯罩的三维建模 9

3.2汽车前大灯反光碗模具的三维建模 9

3.2.1反光碗模具型腔和型芯的三维建模 10

第四章 模具的加工工艺分析以及加工仿真 11

4.1模具的加工工艺分析及过程 11

4.1.1型腔加工工艺过程表 11

4.1.2型芯加工工艺表 11

4.2汽车前大灯模具的加工刀具路径 12

4.2.1外形铣削 12

4.2.2曲面粗切平行加工 16

4.2.3曲面粗切等高 18

4.2.4曲面精修等高 21

4.2.5曲面精修等高 23

4.3对模具进行加工仿真 24

4.4模具加工仿真的部分加工程序 25

4.4.1型腔加工仿真的部分程序 25

4.4.2型芯加工仿真的部分加工程序 27

总结 29

致谢 30

参考文献 31

第一章 概述

1.1汽车的发展

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