機床數(shù)控技術(shù)及應(yīng)用

1.1  數(shù)控技術(shù)的基本概念                             1  
1.2  數(shù)控機床的組成                             2
1.2.1  機床本體                             2
1.2.2  數(shù)控系統(tǒng)                             3
1.2.3  外圍系統(tǒng)                             4  
1.3  數(shù)控機床的特點及分類                             4
1.3.1  數(shù)控機床的特點                             4
1.3.2  數(shù)控機床的分類                             5  
1.4  數(shù)控機床的應(yīng)用范圍                             10  
1.5  數(shù)控技術(shù)的發(fā)展趨勢                             11  
習(xí)題與思考題                             12
第2章  數(shù)控機床加工程序的編制                             13  
2.1  數(shù)控編程基礎(chǔ)                             13
2.1.1  數(shù)控編程的概念                             13
2.1.2  數(shù)控編程的內(nèi)容和步驟                             14
2.1.3  數(shù)控編程的方法                             15
2.1.4  數(shù)控機床坐標(biāo)軸和運動方向                             15  
2.2  數(shù)控編程的常用指令與格式                             19
2.2.1  程序編制的標(biāo)準(zhǔn)與代碼                             19
2.2.2  數(shù)控程序的結(jié)構(gòu)與格式                             20  
2.3  數(shù)控加工手工編程                             24
2.3.1  數(shù)控加工手工編程的工藝處理                             24
2.3.2  常用數(shù)控加工基本指令介紹                             31
2.3.3  程序編制實例                             38  
2.4  數(shù)控加工自動編程概述                             45
2.4.1  自動編程方法                             45
2.4.2  自動編程系統(tǒng)的信息處理過程                             46
2.4.3  典型CAD/CAM軟件介紹                             49  
習(xí)題與思考題                             51
第3章  計算機數(shù)控系統(tǒng)（CNC系統(tǒng)）                             53  
3.1  概述                             53
3.1.1  CNC系統(tǒng)的組成                             53
3.1.2  CNC系統(tǒng)的功能和一般工作過程                             53  
3.2  CNC系統(tǒng)的硬件結(jié)構(gòu)                             58
3.2.1  單CPU結(jié)構(gòu)CNC系統(tǒng)                             58
3.2.2  多CPU結(jié)構(gòu)CNC系統(tǒng)                             60  
3.3  CNC系統(tǒng)的軟件結(jié)構(gòu)                             61
3.3.1  CNC系統(tǒng)控制軟件的結(jié)構(gòu)特點                             62
3.3.2  CNC系統(tǒng)的軟件結(jié)構(gòu)模式                             65  
3.4  CNC系統(tǒng)的輸入/輸出與通信                             71
3.4.1  CNC裝置的輸入/輸出和通信要求                             71
3.4.2  CNC系統(tǒng)常用外部設(shè)備及接口                             72  
3.5  開放式CNC系統(tǒng)                             80
3.5.1  CNC系統(tǒng)的發(fā)展                             80
3.5.2  開放式數(shù)控系統(tǒng)的結(jié)構(gòu)                             81
3.5.3  開放式CNC系統(tǒng)的主要特點                             82  
3.6  CNC裝置的插補原理                             83
3.6.1  概述                             83
3.6.2  典型插補方法的工作原理及運算                             85  
3.7  CNC系統(tǒng)的刀具補償原理                             96
3.7.1  刀具半徑補償                             97
3.7.2  刀具長度補償                             99  
習(xí)題與思考題                             99
第4章  數(shù)控機床的伺服系統(tǒng)                             101  
4.1  概述                             101  
4.2  步進(jìn)電動機及驅(qū)動電路                             104
4.2.1  步進(jìn)電動機的分類和工作原理                             105
4.2.2  步進(jìn)電動機的主要特性及參數(shù)                             108
4.2.3  步進(jìn)電動機的驅(qū)動控制                             110
4.2.4  步進(jìn)電動機伺服系統(tǒng)的功率驅(qū)動                             111  
4.3  直流伺服電動機                             113
4.3.1  直流伺服電動機的結(jié)構(gòu)特點                             113
4.3.2  直流伺服電動機的調(diào)速方式                             114  
4.4  交流伺服電動機                             116
4.4.1  交流伺服電動機的結(jié)構(gòu)                             116
4.4.2  交流伺服電動機的工作原理                             116  
4.5  直線伺服電動機傳動                             118
4.5.1  直線伺服電動機的發(fā)展                             118
4.5.2  直線伺服電動機的工作原理                             119
4.5.3  直線伺服電動機的應(yīng)用及特性                             120  
習(xí)題與思考題                             123
第5章  數(shù)控機床的位置檢測裝置                             124  
5.1  位置檢測裝置的作用與要求                             124  
5.2  位置檢測裝置的測量方式                             124  
5.3  脈沖編碼器                             125
5.3.1  增量式光電編碼器                             125
5.3.2  絕對式脈沖編碼器                             127
5.3.3  脈沖編碼器在數(shù)控機床中的應(yīng)用                             128  
5.4  光柵                             129
5.4.1  光柵的工作原理                             129
5.4.2  光柵的分類                             131
5.4.3  光柵的主要特點                             132  
5.5  磁柵                             134  
5.6  旋轉(zhuǎn)變壓器                             135
5.6.1  旋轉(zhuǎn)變壓器的結(jié)構(gòu)                             135
5.6.2  旋轉(zhuǎn)變壓器的工作原理                             136
5.6.3  旋轉(zhuǎn)變壓器的應(yīng)用                             137  
5.7  感應(yīng)同步器                             138
5.7.1  感應(yīng)同步器的結(jié)構(gòu)和特點                             138
5.7.2  感應(yīng)同步器的工作原理                             139  
習(xí)題與思考題                             140
第6章  數(shù)控機床的機械結(jié)構(gòu)                             142  
6.1  概述                             142  
6.2  數(shù)控機床的主傳動系統(tǒng)                             143
6.2.1  對主傳動系統(tǒng)的要求                             143
6.2.2  主傳動系統(tǒng)的變速方式                             143
6.2.3  齒輪傳動系統(tǒng)的總傳動比及其分配                             148
6.2.4  主軸部件                             150  
6.3  進(jìn)給傳動機構(gòu)                             154
6.3.1  對進(jìn)給傳動系統(tǒng)的要求                             154
6.3.2  聯(lián)軸器                             155
6.3.3  消除間隙的齒輪傳動結(jié)構(gòu)                             156
6.3.4  滾珠絲杠螺母副                             158  
6.4  數(shù)控機床的自動換刀系統(tǒng)                             170
6.4.1  自動換刀裝置的形式                             170
6.4.2  帶刀庫的自動換刀系統(tǒng)                             174  
6.5  刀具交換裝置                             180  
6.6  數(shù)控機床的其它裝置                             183
6.6.1  數(shù)控回轉(zhuǎn)工作臺                             183
6.6.2  分度工作臺                             184
6.6.3  排屑裝置                             187
6.6.4  機床導(dǎo)軌                             189
6.6.5  支承件                             199  
習(xí)題與思考題                             206
第7章  數(shù)控機床的選用與維護                             207  
7.1  數(shù)控機床的選型                             207
7.1.1  被加工工件的確定                             207
7.1.2  機床規(guī)格的選擇                             207
7.1.3  機床精度的選擇                             207
7.1.4  自動換刀裝置和刀庫容量的選擇                             208
7.1.5  數(shù)控系統(tǒng)的選擇                             209
7.1.6  加工節(jié)拍與機床臺數(shù)估算                             209  
7.2  數(shù)控機床的安裝與調(diào)試                             209
7.2.1  加工中心的安裝                             210
7.2.2  加工中心的調(diào)試                             215
7.2.3  機床的試運行                             218
7.2.4  機床性能檢測                             219
7.2.5  數(shù)控功能檢測                             220  
7.3  數(shù)控機床的驗收                             221
7.3.1  機床幾何精度檢測                             221
7.3.2  機床定位精度檢測                             221  
7.4  數(shù)控機床的維護                             225
7.4.1  數(shù)控機床使用中應(yīng)注意的問題                             225
7.4.2  數(shù)控系統(tǒng)的維護                             226
7.4.3  機械部件的維護                             227
7.4.4  數(shù)控機床的日常維護保養(yǎng)                             228  
7.5  數(shù)控機床的故障診斷與維修                             235
7.5.1  數(shù)控機床維修的基本概念與管理                             235
7.5.2  故障診斷的基本概念及分類                             235
7.5.3  數(shù)控機床的故障診斷與維修                             236  
習(xí)題與思考題                             238
附錄                             239  
附錄1  數(shù)控系統(tǒng)常用術(shù)語中英文對照                             239  
附錄2  數(shù)控機床常用術(shù)語中英文對照                             242
參考文獻(xiàn)                             248