测绘大作业的目的和任务 Objective and task: 进行大型(测绘)作业的目的是综合运用工程制图课程的知识进行比较系统的制 图实践其目的是使学生理论联系实际掌握部件测绘的工作程序及技能问题,熟悉装 配图及零件图的表达方案的选择,合理地标注尺寸合理编写零件图的技术要求为后 续的课程设计及毕业设计打下良好的基础。 The project offers students an opportunity of systematical practice of engineering drawing. The objective is to teach students skills and methods of part mapping. By the project, students should master how to select representation methods of detail drawing and assembly drawing and be able to dimension and mark technical requirement correctly. The project prov ides theoretical and practical bases for course designs and graduation designs in mechanical engineering 二、测绘大作业的内容 contents 1零件的测绘 Part Mapping 典型零件的测绘:测绘轴、齿轮、螺纹等零件 Mapping of common parts: map shafts, gears, screw thread etc 铸造零件的测绘:测绘支架、砂轮头架或喷洒机阀体等零件,完成零件图(A2#) 张 Mapping of casting parts: map brackets, grind ing wheel heads or valves in spray machines and finish a 2# detail drawing 2由零件图画出装配图 Draw an assembly drawing by detail drawings 根据平口钳的示意图和零件图画出它的装配图(A2#)一张。 Finish an assembly drawing by sketches and detail drawings of a flat nose clamp 3装配图拆画零件图 Interpreting and Separating Assembly Drawings 根据千斤顶装配图,拆画零件2螺套的零件图(A4#)一张。 Complete detail drawings of a screw thread insert by an assembly drawing of a jack 三、测绘大作业的基本要求 basic requirements 1绘图量 numbers of drawings (1)零件图2张以上(至少要有一个铸件)。 Number of detail drawings: 2 (includes one casting part at least) (2)装配图1张 Number of assembly drawings: 1 2基本要求 basic requirements (1)投影正确,视图选择和配置适当 Drawings should have correct projections, properly selected and arranged views (2)尺寸标注正确、完整、清晰、基本合理、字体工整 Dimensions are complete, clear and reasonable, Hand writings are neat2 一、测绘大作业的目的和任务 Objective and task ： 进行大型(测绘)作业的目的是综合运用工程制图课程的知识,进行比较系统的制 图实践,其目的是使学生理论联系实际,掌握部件测绘的工作程序及技能问题,熟悉装 配图及零件图的表达方案的选择,合理地标注尺寸合理编写零件图的技术要求,为后 续的课程设计及毕业设计打下良好的基础。 The project offers students an opportunity of systematical practice of engineering drawing. The objective is to teach students skills and methods of part mapping. By the project, students should master how to select representation methods of d etail drawing and assembly drawing and be able to dimension and mark technical requirements correctly. The project provides theoretical and practical bases for course designs and graduation designs in mechanical engineering. 二、测绘大作业的内容 contents 1.零件的测绘 Part Mapping 典型零件的测绘：测绘轴、齿轮、螺纹等零件 Mapping of common parts: map shafts, gears, screw thread etc. 铸造零件的测绘：测绘支架、砂轮头架或喷洒机阀体等零件，完成零件图（A2） 一张。 Mapping of casting parts: map brackets, grinding wheel heads or valves in spraying machines, and finish a 2# detail drawing. 2.由零件图画出装配图 Draw an assembly drawing by detail drawings 根据平口钳的示意图和零件图画出它的装配图（A2）一张。 Finish an assembly drawing by sketches and detail drawings of a flat nose clamp. 3.装配图拆画零件图 Interpreting and Separating Assembly Drawings 根据千斤顶装配图，拆画零件 2 螺套的零件图（A4）一张。 Complete detail drawings of a screw thread insert by an assembly drawing of a jack. 三、测绘大作业的基本要求 basic requirements 1.绘图量 numbers of drawings (1) 零件图:2 张以上(至少要有一个铸件)。 Number of detail drawings: > 2 (includes one casting part at least) (2) 装配图:1 张 Number of assembly drawings: 1 2.基本要求 basic requirements (1)投影正确,视图选择和配置适当; Drawings should have correct projections, properly selected and arranged views. (2)尺寸标注正确、完整、清晰、基本合理、字体工整; Dimensions are complete, clear and reasonable; Handwritings are neat