Summary of internshipInternship location: Shanghai Pudong jinwan road no.56, GM China

Internship time: on December 18, 2013 - February 28, 2014

On December 18, 2013, I entered the GM China and began the first internship experience in life. The Job title is GM China test engineer of concept vehicle integration (CVI) laboratory in engineering department. Since I am a newcomer in lab and engineering department, the department arrange experienced engineer Yi Zhen give me instructions. Under the guidance of Yi Zhen, I understand the plan of concept vehicle integration, tests in laboratory, daily work. And I also actively participate in related work. During the internship, it is necessary to compare the practical work with theoretical knowledge and deepen the understanding of the practical work with the theoretical knowledge, to verify that knowledge learned in university is really useful to practice.

During this period, two tasks of work and study is completed. First going to and off work with other colleagues, cooperating with each other to complete department work is my business; learning with modesty and striving to gain practical experience is my task. At work, I try to adapt to the lab as soon as possible and complete the assignments with strong responsibility. Practice brings me a lot of benefit. It made me have a deeper perceptual and the rational understanding in R&D work especially of the concept vehicle integration of GM China.

My work is mainly carried out in the laboratory. In the laboratory, I mainly

responsible for computer 3 d modeling of the required components，machining CNC

programming, and engineering drawings and supporting workers to use equipment such as machining. The preparation of the car chassis, body and other parts of the test fixture is important work of the laboratory. It determines the accuracy of the concept car assembly, and ultimately affects the results of the test concept car. For the purpose of ensuring the accuracy of fitness between the various parts of the entire concept car, the experienced engineer recommends to model the various parts of concept cars and assembly virtually in the computer. By contrast to requirement, we can observe the design before manufacturing, and is able to repeatedly modify the model until meet the requirements of the workflow in the end.

sliding mechanism assembly designed during the internship

Some component of sliding mechanism assembly designed during the internship

Some component of sliding mechanism assembly designed during the internship

It is worth mentioning that because of the visualization of part model in computer, designers and manufacturers are easier to observe a variety of problems in the assembly and instantly modify their design. They can work together to solve the problem by improving the part size and other parameters, as well as the defect the wrongness in the design phase.

So you can avoid the later modifications of real parts, or other changes which may take much bigger costs to meet the precision requirement in the assembly of the entire concept car. In this way, we can increase the speed of a component design and reduce pieces of scrap caused by problems existing in preliminary design. Due to lack of experience, I take a lot of detours when modeling vehicle parts. That bring my colleagues a lot of trouble, but Zhen Yi did not criticize me. Instead, he share experience with me, encourage me to continue working hard. I am really encouraged, and go on to get things done.

In internship, I get a deep feeling, multifaceted improve their ability. The progress of ability to work is chief among them. The purpose of doing an internship is to enhance we students the ability to do the actual work, and how to work well with what we learned in the school, give us the opportunity to put knowledge and skills into actual work. Since entering GM China, I work hard in a positive, open-minded, and studious attitude, and participate laboratories concept car project, work such as concept car assembly debugging and testing. And I begin to become familiar with a variety of laboratory equipment, understand the function of each department. So I can devote what I am good at to serve for the laboratory work as soon as possible. During the internship I summarize work in every day, and receive a good response. Remarks from feedback sound of the GM China also reflects I have a strong ability to adapt, with a certain degree of organization and communication skills, well executing tasks assigned to me during the internship.

The designed sliding mechanism has position-adjusting function

Internship harvest, mainly in the following areas:1 Experienced the corporation culture of GM China, met many of my colleagues

from home and abroad. Among them is the boss who often eats potato chips called Ifetkhar, John who is responsible for the safety and security of experience, Tsinghua graduated master engineer Yi Zhen, And Tony who have changed four jobs, the CNC programming projects, etc. And I happened to get the chance to attend the annual meeting on Feb.14 2014. During the annual meeting of GM China, the CEO at the meeting in English elaborated GM's vision is to design, manufacture, sell the world's best cars.

2I have improved the practical work ability and obtained the valuable experience for future employment. I learned advanced 3D print method and other critical skills.

3Enhanced professional knowledge and skills and deepened the understanding of American automobile industry background. Since GM has American background, ANS was preferred in the system development of GM China. We used ASME-14.5(2009) as GD&T other than GB. The dimension, tolerance and fiducial mark used in CAD software NX reflected American GD&T standard.

4Enhanced the communication skill. I had to communicate with the superior from American headquarters in English. When I expressed the manufacturing method of parts with Yi who came from Hubei, I communicated in Mandarin. And many experienced Shanghai colleague preferred Shanghainese. I had to change different language at work. An open-minded attitude was important as well. The colleagues would be willing to help solving problems.

Through the internship, I have roughly understood the automobile industry. I will learn more relevant knowledge to improve my level and skill job skills. From the ignorant beginning to now, the two months benefited me a lot.

Thanks again: Iftekhar Ibrahim，Eva Zhang, Zhen Yi, Tony Li, Cris, Xiaowei

Hou, Sam Zhu, Zizhong chen, Zhiming Hu, Qun shao and other colleagues.Chunhao Fei

Tongji University, Mechanical Engineering

实习总结实习地点：中国上海浦东金皖路 56号 通用中国实习时间：2013年 12月 18日-2014年 2月 28日

2013年 12月 18日，我走进通用中国开始了人生中的第一份实习经历。应聘

职位是通用中国工程部下属概念车集成实验室的测试工程师。由于对实验室和工

程部的环境等很陌生，部门让经验丰富的工程师易臻指导我学习。在易臻的指导

下，我依次对实验室的概念车集成的计划，实验室的工作内容、日常工作的展开

等进行了解，并积极参与相关工作。实习期间需要的是，将理论知识对照实际工

作，用理论知识加深对实际工作的认识，用实践验证大学所学确实有用。

期间，完成了学习与工作两重任务。与同事一样上下班，互相协助完成部门

工作；又虚心学习，努力获取实践经验。工作时，以踏实的态度，较强的工作能

力和勤奋好学来适应实验室工作，完成布置的任务。实习带给我的收获良多，通

过实习使我对通用汽车的研发工作特别是概念车的集成方面，有了深层次的感

性与理性的认识。

我的工作主要在实验室进行。在实验室，我主要负责是为所需零部件进行计

算机三维造型，进行机加工数控编程，并绘制工程图纸和支持工人运用设备机

加工等。其中汽车底盘，车身和测试夹具等零部件的制备是实验室的重要工作内

容，决定了概念车装配的精度，并最终将影响概念车测试的实验结果。出于确保

概念车各零部件之间的配合精度的目的，实验室采用先在计算机三维建模并模

拟装配，通过观察对比设计方案的要求，进行反复修改模型直至满足要求的工

作流程。

实习中设计的滑轨组件装配件

实习中设计的滑轨组件零部件

实习中设计的滑轨组件零部件

值得一提的是，计算机中零件模型的可视化，更便于设计者和制造者观察

装配可能中出现的各种问题。这样通过改进零件尺寸等参数解决问题，将缺陷在

设计阶段得以避免或减少。这样则可以避免后期零件制备不和要求，概念车总体

装配时的零件配合精度不够等需要耗费叫大成本的更改。这样，从而提升了个零

部件设计制备的速度，并且能降低前期设计问题而导致产生报废件.由于缺乏实

践经验，我在期间做模型设计的时间走了很多弯路，给同事的工作带来了很多

麻烦，但是我们易工并没有批评我，而是向我传授多年的经验，鼓励我继续认

真的把事情做好。我很受鼓舞，同时也很努力的去把事情做好。

　　实习生活，感触很深，提高了自己多方面能力。其中最主要的是工作能

力的进步。实习的目的就是提高我们学生做实际工作的能力，如何在工作中学以

至用，给我们一次将学校所学的知识和技能，付诸操作和演练的机会。自从走进

通用中国，我本着积极肯干、虚心好学态度，参与实验室概念车项目的计划、所

需零部件的设计制造、概念车的总装调试与测试、以及对熟悉实验室的各种设备

对了解各职能部门，让自己尽快融入实验室，发挥自己所学服务概念车的集成

项目.同时每天总结日常工作，完成并提交实习总结，反应良好。实习所在公司

的反馈情况表明，在实习期间反映出我具有较强的适应能力，具备了一定的组

织能力和沟通能力，能很好的完成上级在实习期间给我布置的工作任务。

滑动机构实现换挡杆的位置调节功能

实习收获，主要有以下方面：

1、体验了通用中国的企业文化，结识了许多来自国内外的同事。他们之中

有经常吃薯片的老板 Ifetkhar，负责安全保障的经历 John，清华毕业的硕士工程

师易臻，以及 7年跳槽 4家公司的数控编程工程师傅 Tony等。期间参加一次公

司年会，公司 CEO在会上用英语阐述了通用公司的愿景是设计、制造、销售世界

上最好的汽车等。

2、提高了实际工作的能力，为将来就业取得了宝贵的实践经验。期间从经

验丰富的师傅那里，学习了先进的 3D打印机的使用方法，和高精度装配汽车

所需的三坐标测量仪，使用 3轴和 5轴加工中心的操作，水切割机床的工作流

程等。

3、增进了专业知识和技能的积累，加深了对美国背景汽车行业理解。因为

通用汽车是具有美国背景的汽车企业。在通用中国的汽车开发体系中，更倾向于

使 用 美 国 国 家 标 准 ， 比 如 用 于 工 程 制 图 几 何 尺 寸 与 公 差 标 准

ASME14.5（2009），而不是学校所学的中国国标。这在使用 CAD软件NX时得

以体现，在工程制图时，制图规范中的尺寸标注，公差要求，基准符号等细节

都得以体现了美国的GD&T标准。

　　4、增强了人际交往与沟通的能力。在实验室，要与来自美国总部的上级主

管用英语交流，与来自湖北的易工普通话阐述零件的制备方法，而许多扎根上

海多年的上海老师傅则更倾向于在工作中使用上海话，使用不同语言是一个问

题。此外虚心的态度也是非常重要的。在工作中遇到困难虚心求教，各个同事一

般都会乐于帮助。

通过实习，我对汽车行业有了大致的了解，也准备在实习结束后，借回校

的机会，抓紧时间，学习更多相关的理论知识，提高自己的专业水平，为正式

工作积蓄更多知识，熟练工作技能。从一开始的懵懵懂懂，到现在有了前进的方

向，惟有短短的两个月时间，就让我如此受益非浅，如此感慨万分！

再次感谢实习中帮助过我同事：Iftekhar Ibrahim，Eva Zhang, Zhen Yi, Tony

Li, Cris, Xiaowei Hou, Sam Zhu, Zizhong Chen, Zhiming Hu, Qun shao 以及其他同

事。

费春皓

同济大学 机械工程