Syllabus of of Mechanical Design Basis.doc

Syllabus of of Mechanical Design Basis(A) Course code: 0010308003. Course property and teaching objectivesCourse property: Mechanical Design Basis is a basic technical course for undergraduates of relative mechanical and non-mechanical majors. This course comprehensively takes knowledge in previous courses such as mechanical drawing, engineering mechanics, engineering materials, interchangeability and measurement basis, mechanical manufacturing basis and metalworking practice, to study and solve common problems in mechanical design. Teaching objectives:1. To master basic knowledge about application and maintenance of mechanical equipment. 2. To master working principles, structure, performance characteristics, selection and design calculation methods of common mechanism, common parts and standard parts in machinery. 3. To acquire initial ability to design simple mechanical transmission and to study machine design schemes. . Course teaching contents1. Kinematic diagram of planar mechanism and degree of freedom (DOF): composition of planar mechanism, kinematic diagram and degree of freedom of planar mechanism, and relevant contents. 2. Planar linkage: characteristics, category and application of planar four-bar linkage, basic characteristics of planar four-bar linkage, existence conditions of crank in four-bar linkage, evolution of planar four-bar linkage, design of planar four-bar linkage with fixed travel velocity-ratio coefficient, design of planar four-bar linkage with fixed connecting rod position. 3. Cam mechanism: composition, characteristics, application and classification of cam mechanism, motion law of followers, and design of cam profile with graphic method, concept of pressure angle in cam mechanism. Comprehend confirmation of basic parameters in cam mechanism.4. Gear mechanism: characteristics and classification of gear mechanism, fundamental law of profile mesh, meshing properties of involute profile, name and basic size of each part in involute standard spur gear, meshing transmission of involute gear. Comprehend common normal and constant chord of involute standard gear. To master processing method of involute gear, shifted gear, parallel-axis helical cylindrical gear mechanism and bevel gear mechanism. 5. Gear train: classification of gear train, calculation of transmission ratio of ordinary gear train, epicyclic gear train and calculation of its transmission ratio, compound gear train and calculation of its transmission ratio. Comprehend application of gear train. 6. Intermittent mechanism: common intermittent mechanisms. 7. Introduction of mechanical design: major failure forms, work ability and criterion of work ability of mechanical parts, strength and common materials of mechanical parts.8. Connection: threaded connection, to comprehend screw rotation, to master key and splined connection, to comprehend interference fit joint.9. Belt transmission and chain transmission: category and characteristics of belt transmission, analysis of working condition of belt transmission, design calculation of ordinary V-belt transmission. Characteristics and category of chain transmission, motion analysis and force analysis of chain transmission, design calculation of chain transmission; to comprehend arrangement and lubrication of chain transmission. 10.Gear transmission: failure forms and calculation criteria of gear transmission, gear material, load calculation of gear transmission, strength calculation of standard spur gear, selection of gear precision and design parameters, allowable stress, strength calculation of standard helical cylindrical gear transmission, strength calculation of standard straight bevel gear transmission. Comprehend structure design of gear. Learn lubrication of gear transmission by oneself. 11. Worm transmission: features of worm transmission, to master calculation of basic parameters and geometry size of cylindrical worm transmission, force analysis of worm transmission. Comprehend calculation of bearing capacity of worm transmission. 12. Axis: uses and classification of axis. Master materials, structure and calculation of axis.13. Rolling bearing: structure of rolling bearing. Master types, code and selection of common rolling bearings, selection and calculation of rolling bearing. Comprehend static strength calculation of rolling bearing. Master the combination design.14. Coupling: to master category and selection of coupling. . Basic requirements of course teaching 1. Basic knowledge required to master Working principles, structures, performance characteristics, selection and design calculation methods of common mechanisms, common parts and standard parts in machinery.2. Basic theory and methods required to masterWorking principles, design methods of common mechanisms. Working principles and force analysis, stress analysis, failure analysis, etc. of mechanical parts. Calculation criteria of work ability of mechanical parts: volume strength and surface strength, static strength and fatigue strength, stiffness and flexibility, friction, abrasion and lubrication, service life and reliability, and heat balance, impact and stability, etc. 3. Basic skills required to master Design calculation, structure design and drawing skills; experiment skills; skill of compiling file, looking up and using tools and materials. . Basic requirements of experiments (practice)Every student shall do three