目　录
项目一制图的基础知识与技能.........................................................................................1
1-1　字体及常用符号书写练习（一）.............................................................................................1
1-2　字体及常用符号书写练习（二）.........................................................................................2
1-3　字体及常用符号书写练习（三）..............................................................................................3
1-4　字体及常用符号书写练习（四）...............................................................................4
1-5　线型练习.......................................................................................................................................5
1-6　尺规作图.....................................................................................................................7
1-7　尺寸标注练习（一）.........................................................................................................8
1-8　尺寸标注练习（二）...............................................................................................9
1-9　尺寸标注练习（三）.....................................................................................................10
1-10　常用等分 （保留作图线）................................................................................11
1-11　等分圆周...................................................................................................12
1-12　圆弧连接......................................................................................................................13
1-13　锥度与斜度练习.......................................................................................................14
1-14　椭圆的近似画法...........................................................................................................15
1-15　尺规作图......................................................................................................................16
1-16　抄画平面图形作业图例.....................................................................................17
1-17　徒手绘图.........................................................................................................................19
项目二投影基础知识............................................................................................................................21
2-1　投影法的概念..................................................................................................21
2-2　认识三视图......................................................................................................................22
2-3　绘制三视图.....................................................................................................................23
2-4　尺规作图.............................................................................................................................28
2-5　点的投影....................................................................................................................30
2-6　直线的投影（一）............................................................................................................32
2-7　直线的投影（二）..................................................................................................33
2-8　直线的相对位置...................................................................................................34
2-9　平面的投影.................................................................................................................37
2-10　平面上的点和直线.............................................................................................39
2-11　点、线、面综合练习..........................................................................................41
2-12　平面立体投影练习...............................................................................43
2-13　曲面立体投影练习............................................................................................47
2-14　基本体的尺寸标注............................................................................................51
项目三绘制轴测图..........................................................................................52
3-1　基本体轴测图的画法（一）..............................................................................................52
3-2　基本体轴测图的画法（二）.....................................................................................53
3-3　基本体轴测图的画法（三）........................................................................54
3-4　基本体轴测图的画法（四）.....................................................................................55
3-5　简单形体的正等轴测图（一）......................................................................................56
3-6　简单形体的正等轴测图（二）.............................................................................57
3-7　简单形体的正等轴测图（三）........................................................................58
3-8　简单形体的正等轴测图（四）..............................................................................59
项目四 组合体的三视图........................................................................................................60
4-1　截交线的投影练习.................................................................................................60
4-2　相贯线的投影练习.................................................................................................63
4-3　组合体的读图练习..........................................................................................................65
4-4　组合体三视图绘图练习.................................................................................70
4-5　组合体视图上的尺寸标注..................................................................................73
4-6　组合体三视图综合练习..............................................................................................75
4-7　尺规作图.................................................................................................80
项目五 图样的画法................................................................................................................83
5-1　视图..........................................................................................................83
5-2　剖视图......................................................................................................85
5-3　断面图.................................................................................................................98
5-4　简化及规定画法...............................................................................................100
5-5　表达方法综合练习......................................................................................101
5-6　尺规作图.................................................................................................103
项目六 标准件和常用件..................................................................................................106
6-1　螺纹...................................................................................................................106
6-2　连接件.................................................................................................................110
6-3　齿轮...........................................................................................................................112
6-4　键和销...................................................................................114
6-5　滚动轴承及弹簧................................................................115
项目七 零件图..........................................................................................................117
7-1　零件图的尺寸标注.........................................................................117
7-2　零件图的表面结构表示...........................................................118
7-3　几何公差标注...............................................................................120
7-4　公差与配合....................................................................................121
7-5　识读轴套类零件图.........................................................................123
7-6　识读盘盖类零件图...................................................................126
7-7　识读叉架类零件图...................................................................129
7-8　识读箱体类零件图................................................................132
7-9　尺规作图...............................................................................135
项目 八装配图...............................................................................................138