The application for defense is an application that doctoral and master students must submit after completing their graduation thesis or degree thesis and before formally defending their thesis. Defense is not only a test of one's own knowledge crystallization and innovative ideas, but also a manifestation of academic norms and good style of study.

Dear leaders and teachers of graduation design (thesis) review group: Hello! After nearly 14 weeks' efforts, through the investigation of spiral rod parts, reading relevant references and materials, the demand analysis, system research and system design were carried out, and finally the process planning design of spiral rod parts and the research and design of drilling fixture were completed.

In the stage of reading relevant reference materials, I have mastered the basic methods of researching and designing this system by consulting relevant books such as fixture design and cutting parameter manual, and basically mastered how to operate the fixture to process parts normally.

At the same time, consult foreign materials and complete the translation of foreign materials. In the stage of requirement analysis and system design, through feasibility and system analysis, further research is carried out on the basis of determining the feasibility of the design.

In this graduation project, I carefully studied the knowledge about the process specification design of spiral rod parts and the design of drilling fixture. Under the guidance of the teacher, I completed the task on time and humbly asked my classmates for advice and study.

At present, graduation project (thesis), Chinese-English translation, research report, three A0 drawings and related documents have all been completed. I hereby submit an application for defense to the teacher and enter the next stage of thesis defense. I hope the teacher agrees.

The following are the writing steps and requirements of the defense application:

1, letter title. The general format is "defense application".

2. Write a letter. Including appellation, thanks, respect, etc.

3, explain the identity and personal situation. In the application, you should make clear your identity and study experience, and also explain your research contents and findings in general.

4. List the subjects, topics, tutors and defense committees applying for defense. It is necessary to clarify the subject and major of applying for defense, as well as the title of the thesis, the name of the tutor and the composition of the defense Committee.

5. Write the reasons and main contents of the defense application. It is necessary to explain the story, reflect the research results and findings, lead to difficulties and limitations, clarify the academic value and significance of the research, and express willingness to accept the defense review and any revision.

6, the end. Finally, I need to express my deep gratitude to all of you for your concern and support in my academic life, and to the organizations, tutors, judges and so on.

7. Time and signature of application: At the end of the application, the application date of defense and the name and handwritten signature of the author (i.e. student) should be listed.

In short, a successful defense application requires scientific logical argumentation and careful thinking, highlighting research results and innovative ideas, striving for perfection in expression, writing structure and content, and exerting the greatest persuasiveness.