目录第一章：制图的基本规定..............................................................................................................2一、机械图样的概念..............................................................................................................2二、图纸的作用......................................................................................................................2三、图纸幅面和格式..............................................................................................................2四、比例..................................................................................................................................4五、图线..................................................................................................................................4六、尺寸标注..........................................................................................................................5常见尺寸符号：......................................................................................................................5第二章：正投影法与三视图...........................................................................................................6一、正投影法..........................................................................................................................6二、三视图的形成及投影规律...............................................................................................6第三章：图样的基本表示法...........................................................................................................8一、基本视图..........................................................................................................................8二、向视图..............................................................................................................................8三、局部视图..........................................................................................................................9四、斜视图..............................................................................................................................9五、剖视图..............................................................................................................................9六、断面图............................................................................................................................10第四章：机械图样的识读（零件图）.........................................................................................11一、读懂零件图基本标准.....................................................................................................11二、零件图中的技术要求及注写.........................................................................................11三、读零件图的方法和步骤.................................................................................................11四、典型零件图的识读.........................................................................................................12第五章：数控车削加工基础.........................................................................................................15一、数控车削编程的基本知识.............................................................................................15二、程序的结构与格式................................
