机械设计基础知识（Basic knowledge of mechanical design）.doc

机械设计基础知识（Basic knowledge of mechanical design） Chapter 1 basic knowledge of mechanical design 1.2 what parts are there in a machine? Which part is the main part of mechanical design? 1.3 what are the parts, components and components? What is a universal mechanical part? What is special mechanical parts? 1.4 what are the general steps in the design of general machine parts? Take a mechanical component and a mechanical product as an example to understand the problem 1.5 describe the content, nature and tasks of this course, and illustrate the importance of this course in mechanical engineering. 1.6 is this course related to those first courses? How are you going to review these first lessons in order to learn the course well? 1.7 what is the general procedure of mechanical design? What tasks do we need to accomplish at all stages? 1.8 what are the basic requirements that a design machine should meet? Take a machine as an example. 1.9 what is standardization, serialization and generalization? What is the significance of adopting three changes in mechanical design? 1.10 mechanical design should meet those basic standards? 1.11 write the strength condition expression of the part and explain the physical meaning represented by each symbol. 1.12 how to determine the ultimate stress of part material? 1.13 what is the name of the mechanical parts of the failure may? What are the main practical forms of mechanical parts? 1.14 what is reliability? What is the difference between reliability and discovery? Why do parts perform reliability calculations? 1.15 why are the reliability parts commonly used in mechanical design? 1.16 what are the measures to improve the strength of mechanical parts? 1.17 under what conditions should we design parts according to the stiffness conditions? What are the measures to improve the rigidity of parts? If the material of a shaft is changed from carbon to alloy steel, the size and shape of the shaft will be unchanged. Can the rigidity of the shaft