緒論 ···················································································································.1
0.1 工程圖樣的內(nèi)容及其作用·········································································.1
0.2 本課程的研究對(duì)象及學(xué)習(xí)本課程的目的·······················································.2
0.3 本課程的主要任務(wù)··················································································.2
0.4 本課程的學(xué)習(xí)方法··················································································.2
項(xiàng)目 1 手柄 ·······································································································.4
任務(wù) 1.1 抄畫圓柱銷零件圖···············································································.4
1.1.1 繪圖儀器及工具使用 ·········································································.5
1.1.2 機(jī)械制圖國家標(biāo)準(zhǔn)的一般規(guī)定······························································.7
1.1.3 任務(wù)實(shí)施 ······················································································.16
任務(wù) 1.2 繪制手柄平面圖形·············································································.18
1.2.1 等分 ····························································································.18
1.2.2 斜度和錐度 ···················································································.19
1.2.3 圓弧連接 ······················································································.21
1.2.4 平面圖形的繪制方法 ·······································································.23
1.2.5 徒手畫圖方法 ················································································.25
項(xiàng)目 2 簡單零件·······························································································.27
任務(wù) 2.1 繪制物體三視圖················································································.28
2.1.1 投影法概述 ···················································································.28
2.1.2 物體的三視圖 ················································································.30
2.1.3 任務(wù)實(shí)施 ······················································································.34
任務(wù) 2.2 繪制螺母坯三視圖·············································································.34
2.2.1 平面立體 ······················································································.35
2.2.2 回轉(zhuǎn)體零件 ···················································································.46
2.2.3 任務(wù)實(shí)施 ······················································································.57
任務(wù) 2.3 繪制三通管接頭三視圖·······································································.58
2.3.1 相貫體零件 ···················································································.58
2.3.2 任務(wù)實(shí)施 ······················································································.62
任務(wù) 2.4 讀十字接頭零件圖·············································································.62
2.4.1 零件表面結(jié)構(gòu)參數(shù) ··········································································.63
2.4.2 尺寸公差 ······················································································.69
2.4.3 任務(wù)實(shí)施 ······················································································.72
項(xiàng)目 3 組合體 ··································································································.74
任務(wù) 3.1 繪制軸承座三視圖·············································································.74
3.1.1 組合體 ·························································································.75
3.1.2 任務(wù)實(shí)施 ······················································································.78
任務(wù) 3.2 標(biāo)注軸承座 1 的尺寸·········································································.80
3.2.1 標(biāo)注尺寸的基本要求 ·······································································.80
3.2.2 組合體尺寸標(biāo)注步驟 ·······································································.81
3.2.3 常見形體的尺寸標(biāo)注 ·······································································.81
3.2.4 任務(wù)實(shí)施 ······················································································.83
任務(wù) 3.3 識(shí)讀軸承座 3 的三視圖·······································································.85
3.3.1 讀圖的基本步驟 ·············································································.86
3.3.2 讀組合體視圖的方法和步驟·······························································.87
任務(wù) 3.4 繪制軸承座的軸測圖··········································································.88
3.4.1 軸測圖的基本概念 ··········································································.89
3.4.2 正等軸測圖 ···················································································.90
3.4.3 斜二軸測圖 ···················································································.95
3.4.4 任務(wù)實(shí)施 ······················································································.96
項(xiàng)目 4 典型零件·······························································································.97
任務(wù) 4.1 繪制軸套類零件的零件圖····································································.99
4.1.1 剖視圖的概念和畫法 ······································································.100
4.1.2 剖視圖的種類 ···············································································.104
4.1.3 幾何公差 ·····················································································.108
4.1.4 幾何公差的標(biāo)注方法及其含義···························································.110
4.1.5 繪制套筒零件圖 ············································································.111
4.1.6 零件視圖的選擇方法 ······································································.113
4.1.7 斷面圖 ························································································.115
4.1.8 局部放大圖 ··················································································.119
4.1.9 軸套類零件的視圖表達(dá)····································································.120
4.1.10 從動(dòng)軸表達(dá)方案···········································································.122
4.1.11 軸套類零件的尺寸標(biāo)注與技術(shù)要求 ···················································.123
4.1.12 軸類零件的常見結(jié)構(gòu)·····································································.126
4.1.13 分析軸的表達(dá)方案········································································.128
任務(wù) 4.2 繪制盤蓋類零件的零件圖···································································.129
4.2.1 單一剖切面 ··················································································.129
4.2.2 幾個(gè)平行平面的剖切平面·································································.131
4.2.3 幾個(gè)相交的剖切面 ·········································································.132
4.2.4 復(fù)合剖切面 ··················································································.133
4.2.5 剖視圖的規(guī)定畫法 ·········································································.134
4.2.6 視圖的簡化畫法 ············································································.135
4.2.7 任務(wù)實(shí)施 ·····················································································.139
任務(wù) 4.3 繪制箱殼類零件圖············································································.141
4.3.1 基本視圖 ·····················································································.142
4.3.2 向視圖 ························································································.143
4.3.3 局部視圖 ·····················································································.143
4.3.4 斜視圖 ························································································.146
4.3.5 箱殼類零件的視圖表達(dá)····································································.147
4.3.6 箱殼類零件的尺寸及技術(shù)要求···························································.150
4.3.7 箱殼類零件上常見小孔的標(biāo)注···························································.151
4.3.8 鑄造工藝結(jié)構(gòu) ···············································································.152
4.3.9 任務(wù)實(shí)施 ·····················································································.154
任務(wù) 4.4 叉架類零件的表達(dá)方法······································································.157
4.4.1 叉架零件的視圖表達(dá)特點(diǎn)·································································.157
4.4.2 任務(wù)實(shí)施 ·····················································································.157
4.4.3 讀撥叉零件圖 ···············································································.158
任務(wù) 4.5 測繪端蓋零件圖···············································································.160
4.5.1 分析零件、繪制零件草圖·································································.161
4.5.2 畫正圖 ························································································.162
4.5.3 零件測繪時(shí)的注意事項(xiàng)····································································.163
4.5.4 測量工具的使用方法 ······································································.163
項(xiàng)目 5 直齒圓柱齒輪減速器 ··············································································.166
任務(wù) 5.1 繪制螺紋連接圖···············································································.167
5.1.1 螺紋的形成 ··················································································.168
5.1.2 螺紋的要素 ··················································································.169
5.1.3 螺紋的種類及標(biāo)注 ·········································································.170
5.1.4 螺紋連接的畫法 ············································································.173
5.1.5 常用螺紋緊固件的種類····································································.175
5.1.6 螺紋緊固件的規(guī)定標(biāo)記····································································.175
5.1.7 常用螺紋緊固件連接的畫法······························································.176
任務(wù) 5.2 繪制直齒圓柱齒輪工作圖···································································.180
5.2.1 圓柱齒輪 ·····················································································.180
5.2.2 任務(wù)實(shí)施 ·····················································································.183
任務(wù) 5.3 繪制鍵連接圖··················································································.184
5.3.1 鍵的作用和種類 ············································································.184
5.3.2 平鍵連接 ·····················································································.185
任務(wù) 5.4 繪制銷連接圖··················································································.188
5.4.1 銷的種類及作用 ············································································.188
5.4.2 銷連接畫法及標(biāo)記 ·········································································.188
5.4.3 任務(wù)實(shí)施 ·····················································································.189
任務(wù) 5.5 繪制滾動(dòng)軸承圖···············································································.190
5.5.1 滾動(dòng)軸承的結(jié)構(gòu)和類型····································································.190
5.5.2 滾動(dòng)軸承的代號(hào)（GB/T 272—1993）··················································.191
5.5.3 滾動(dòng)軸承的畫法 ············································································.192
任務(wù) 5.6 彈簧······························································································.195
5.6.1 彈簧的作用和種類 ·········································································.195
5.6.2 圓柱螺旋壓縮彈簧的基本尺寸···························································.195
5.6.3 圓柱螺旋壓縮彈簧的規(guī)定畫法···························································.196
項(xiàng)目 6 千斤頂和滑動(dòng)軸承··················································································.198
任務(wù) 6.1 繪制千斤頂裝配圖············································································.199
6.1.1 裝配圖的作用 ···············································································.200
6.1.2 裝配圖的內(nèi)容 ···············································································.200
6.1.3 裝配圖表達(dá)方案的選擇····································································.200
6.1.4 裝配圖的規(guī)定畫法 ·········································································.201
6.1.5 裝配圖的特殊表達(dá)方法····································································.202
6.1.6 裝配圖中的零部件序號(hào)和明細(xì)欄及技術(shù)要求·········································.205
6.1.7 繪制裝配圖的方法和步驟·································································.206
6.1.8 千斤頂裝配圖的表達(dá)方案·································································.206
6.1.9 任務(wù)實(shí)施 ·····················································································.207
任務(wù) 6.2 繪制滑動(dòng)軸承裝配圖·········································································.208
6.2.1 分析滑動(dòng)軸承結(jié)構(gòu) ·········································································.209
6.2.2 確定表達(dá)方案 ···············································································.209
6.2.3 任務(wù)實(shí)施 ·····················································································.210
項(xiàng)目 7 球閥 ····································································································.212
任務(wù) 7.1 球閥裝配圖的尺寸標(biāo)注······································································.213
7.1.1 裝配圖的尺寸標(biāo)注 ·········································································.213
7.1.2 配合的基本概念 ············································································.214
7.1.3 尺寸公差的識(shí)讀與查表····································································.218
任務(wù) 7.2 球閥部件的測繪···············································································.219
7.2.1 裝配工藝結(jié)構(gòu) ···············································································.219
7.2.2 部件測繪 ·····················································································.222
項(xiàng)目 8 機(jī)用虎鉗······························································································.230
任務(wù) 8.1 讀機(jī)用虎鉗裝配圖············································································.230
8.1.1 讀裝配圖的要求 ············································································.231
8.1.2 讀裝配圖的方法和步驟····································································.231
任務(wù) 8.2 由機(jī)用虎鉗裝配圖拆畫零件圖·····························································.233
8.2.1 拆畫零件圖的要求 ·········································································.233
8.2.2 拆畫零件圖的步驟和注意事項(xiàng)···························································.233
8.2.3 拆畫螺桿、螺母零件圖····································································.235
項(xiàng)目 9 機(jī)械圖樣識(shí)讀訓(xùn)練··················································································.236
任務(wù) 9.1 讀泵蓋零件圖··················································································.236
任務(wù) 9.2 讀支架零件圖··················································································.238
任務(wù) 9.3 讀銑刀頭裝配圖···············································································.239
任務(wù) 9.4 讀齒輪泵裝配圖···············································································.241
附錄 A ·············································································································.245