【正文】 E－ mail: .NC system 216。 The most basic function of any NC machine is automatic, precise, and consistent motion control. 《 NC Technology 》 E－ mail: .The makeup of a linear axis of an NC machine《 NC Technology 》 E－ mail: .CNC SystemvDefinition (EIA): CNC system is a special puter system that is equipped with certain interface circuits and servo drivers, and can do part or all the works an NC system do by running the software stored in its memories.v EIA(美國(guó)電子工業(yè)協(xié)會(huì) )所屬的數(shù)控標(biāo)準(zhǔn)化委員會(huì)的定義 : “CNC是用一個(gè)存儲(chǔ)程序的計(jì)算機(jī)，按照存儲(chǔ)在計(jì)算機(jī)內(nèi)的讀寫(xiě)存儲(chǔ)器中的控制程序去執(zhí)行數(shù)控裝置的部分或全部功能，在計(jì)算機(jī)之外的唯一裝置是接口 ”。《 NC Technology 》 E－ mail: .CNC machining SystemLogical structure of CNC machine tool《 NC Technology 》 E－ mail: .CNC machining System《 NC Technology 》 E－ mail: .CNC系系 統(tǒng)統(tǒng) 的的 組組 成成216。216?！? NC Technology 》 E－ mail: .CNC裝置的裝置的 組組 成和工作原理成和工作原理 CNC系統(tǒng)平臺(tái)硬件操作系統(tǒng)管理軟件應(yīng)用軟件 控制軟件數(shù)控加工程序 接 口被控設(shè)備 機(jī) 床 機(jī)器人 測(cè)量機(jī) ......《 NC Technology 》 E－ mail: .CNC裝置的裝置的 組組 成和工作原理成和工作原理1. 硬件結(jié)構(gòu) : CPU， 存儲(chǔ)器，總線、 外設(shè) 等 。 系 統(tǒng)初始化 系統(tǒng)控制軟件程序管理編輯 存儲(chǔ) 錄放 管理軟件 控制軟件輸入程序 輸出程序 顯示程序 診斷程序 譯碼程序 補(bǔ)償計(jì)算 速度控制 插補(bǔ)程序 位控程序CNC軟件的構(gòu)成 《 NC Technology 》 E－ mail: .CNC裝置的裝置的 組組 成和工作原理成和工作原理3. 工作原理 通 過(guò) 各種 輸 入方式，接受機(jī)床加工零件的各種數(shù)據(jù)信息， 經(jīng)過(guò) CNC裝置 譯碼 ，再 進(jìn) 行 計(jì) 算機(jī)的 處 理、運(yùn)算，然后將各個(gè)坐 標(biāo)軸 的分量送到各控制 軸 的 驅(qū)動(dòng)電 路， 經(jīng)過(guò)轉(zhuǎn)換 、放大去 驅(qū)動(dòng) 伺服 電動(dòng) 機(jī)， 帶動(dòng) 各 軸 運(yùn) 動(dòng) 。 簡(jiǎn) 要工作 過(guò) 程： 1）輸入 ： 輸入內(nèi)容 —— 零件程序、控制參數(shù)和補(bǔ)償數(shù)據(jù)。3）數(shù)據(jù)處理 ： 包括刀具 補(bǔ)償 ，速度 計(jì) 算以及 輔 助功能的 處 理等。5）位置控制： 在每個(gè)采樣周期內(nèi)，將插補(bǔ)計(jì)算出的理論位置與實(shí)際反饋位置相比較，用其差值去控制進(jìn)給伺服電機(jī)。7）顯示： 零件程序、參數(shù)、刀具位置、機(jī)床狀態(tài)等?！? NC Technology 》 E－ mail: .CNC unit 216。The hardware : microprocessors, electronic memory modules, I/O interfaces, and position control modules, etc. 216。The hardware and the software work together to do all functions of CNC unit, which an ordinary NC system can never do.《 NC Technology 》 E－ mail: .The main functions and features of CNC unit 1. Controlling function (the number of control axes and synchronously control axes) 2. Preparatory function3. Interpolation function 4. Feed function216。 Rapid motion function 《 NC Technology 》 E－ mail: .The main functions and features of CNC unit 6. Miscellaneous function7. Compensation function 216。 Technical parameters pensation 8. Enhanced graphic display function 9. Self173。CNC unit is the core of CNC system. The hardware prising a CNC unit is made up of microprocessors, electronic memory modules, I/O interfaces, and position control modules, etc. , which is just like an ordinary puter system. 《 NC Technology 》 E－ mail: .Types of CNC Unit vby the architecture of printed circuit boards1. All173。one board architecture 2. multi173。 microprocessorsv by the manufacturing fashions1. ordinary personal puter architecture2. special purpose architecturev according to their opening degree 1. Close architecture2. PC173。in173。plug173。PC architecture4. software based open architecture of CNC unit《 NC Technology 》 E－ mail: .All173。one board architecture vAll173。one architecture CNC unit prises main board, position control card, PLC card, displayer card, and power supply. Main board is a big printed circuit board。in173。functional modules architecturevIn this architecture, CNC unit is divided into several function modules. Its hardware and software are designed with modularization method, that is to say, each function module is made of printed circuit of same size, and the control software of function modules are also designed in modularization. Hence, customers can establish their own CNC units by bining their selected function modules into the card racks of a motherboard. CNC control module, position control card, PLC card, graph display card and munication card are familiar function modules. 《 NC Technology 》 E－ mail: .a holonomic CNC lath system 《 NC Technology 》 E－ mail: .Single microprocessor architecture? There is only one microprocessor, which process