机械工程个人陈述一.

　　“Life is Like a Box of Chocolates. You Never Know What You are Going to Get”. Such words come from a famous movie “Forrest Gump”. I don’t know what kind of chocolate life will give me, but I believe I can achieve my target if I work hard with my unwavering beli and persevering forts like Forrest Gump. As a student of Mechanical Engineering, I have just finished my undergraduate study since July. Next what I have to face is to choose the new chocolate which I have yearned for all long. With four-year study of M.E. in China, I would like to scale higher intellectual heights by undertaking advanced studies in XXXX University, as I believe its rich learning environment and free academic atmosphere will open my eyes to new realities and influence me to confront the situation back home.

　　My strong interest in research was born during the undergraduate years at XX University. Upon entering the university in 2000, I began to embark on my journey of industrious study in the Department of Mechanical Engineering. My exceptionally solid foundation in mathematics and physics provided me with a stepping stone with which I proceeded onto the exploration of other sophisticated and erudite subjects. My performance in all the specialty-related coursework not only enabled me to secure good GPA ranking me about top 17 in my grade among 169 students but also furnished me with a powerful instrument whereby to materialize my dreams in the research. I constantly congratulated my luck to obtain a lot of scholarships and awards, due to my academic achievement, from the university, especially the scholarship of “XX University – American United Technological Corporation”, awarded only for the best students who are both good at academic and social capacity. Not contented with doing a good job in mere coursework, I endeavored to keep abreast with the latest theories and technologies by reading extensively technical literature in recent journals and attending the lecture some famous professors made. During my undergraduate career, I have grasped every chance to do some researching work. I used to participate in at least six projects including the intern work in the factory, mechanical designs and graduate design.

　　Especially during the period from September to November of 2003, I read many books and journals in the field of mechanical engineering such as “Handbook of Practical Gear Design” (Written by XXXX). In these books, I did intensive reading on the theory of the speed reducer. I investigated and discussed with my teacher on how to apply the theory into the practice. Then according to my teacher’s advice, I tried to organize a team consisting of five members to make a harmonic gear reducer. As a team leader, I should not only take charge of the whole arrangement of project but also make every member of the team cooperate with each other harmoniously. Bore starting the program, I, together with my team, made a detailed plan covering the schedule, materials, and equipment. The first step of our work is the design of the reducer. The design plan is as follows: (1) Set down the blue print. (2) Complete 3-D solid model with Pro/E software. (3) Finite-element analysis with ANSYS software. (4) Assembling simulation by using Pro/E. (5) Complete the 2-D draft of part and assembly. After two-week design work, we stepped to the next work, manufacture of the product. With the aid of the technique of computer, we plan the manufacturing process of every part. And then, all parts were made with various machine tools such as CNC lathe, wire electrical discharge machine, vertical machining center, and so on. Finally, we had toassembly all parts to the harmonic gear reducer, and test-drove it for many times. With five-week unremitting forts, we succeeded in the project of harmonic gear reducer and obtained the highest praise. This special experience makes it very helpful for my further study. Firstly, I find the connection between theory and practice. Textbooks could hardly cover everything, therore, if we want to learn more, we should pursue every opportunity to have practices. Meanwhile, I experienced the importance and mightiness of cooperation. In the project, we divided ourselves into several parts, not only doing one’s own work well, but also cooperating with each other harmoniously.

　　Another case worthy mentioning is my design project for graduation, “Manufacturing and Performance of Electroplated CBN Tools”. The main objective of this project is the manufacturing of the electroplated CBN (Cubic Boron Nitride) wheels and the research of its performance when grinding the heat-resisted steel. I had completed three steps of task. Firstly, I took charge of the manufacturing of electroplated CBN wheels, covering the following work: selecting electroplating solution, computing various electroplating parameters such as electrical current and temperature, adhering CBN to the tool base by electroplating a nickel layer. After these basic preparations, I had to do the second part of the research work to compare grinding abilities of electroplated CBN wheels with those of other wheels such as SiC wheels, Al2O3 wheels etc. This part of the work needs the researcher’s highly particularity and staidness. I did the detailed work as follows: (1) Grind heat-resisted steel with various wheels in the same grinding conditions. (2) Record data and compute the grinding ratio of various wheels. (3) Measure the surface roughness of the heat-resisted steel ground by various wheels. (4) Observe dulling and pullout of abrasive grains of various wheels by using optical microscope. In this part, we can conclude that electroplated wheels have far better grinding abilities than other wheels, by comparing parameters, such as grinding ratio, surface roughness etc. The final assignment of the project is to find out the most suitable parameters of grinding heat-resisted steel with electroplated CBN wheels, through comparing the grinding ratio and surface roughness of heat-resisted steel ground in different grinding parameters. By investigating the attributes of electroplated CBN wheels and concluding their practical grinding parameters, this project is very important in promoting the application of them.

　　China’s unique advantage of labor force predicts the resplendent future of its Mechanical Engineering, especially the manufacture, and it is our beli that this day will come soon. On the other hand, there are so many experienced technicians in China, however, with the absence of advanced experts many advanced producing method cannot be used in practical yield. When I worked as intern in some factories, I found that most of them were still using facilities which were used in America about thirty years ago. Therore I want to use the advanced knowledge earned in United States, combined with my acquaintance with China, to improve the present situation and apply best the advanced scientific technology to practical social wealth as soon as possible. I hope to become a successful researcher in Mechanical Engineering, the arduous but exhilarative field. The significant progress achieved in M.E, with the extraordinary cultural and intellectual sources in your university, has attracted me greatly. Based on the study and the research experience in XX University, I am sure that I am qualified and would be an outstanding Ph.D. student. With the advanced courses, balanced program and distinguished faculty of your department, I would get a solid background for my future academic career.