機(jī)械外文翻譯---數(shù)控機(jī)床開環(huán)控制系統(tǒng)-數(shù)控設(shè)計(jì)-預(yù)覽頁(yè)
【正文】 ates the range of points these to bee the error The calibration corrections stores the puter, when work table by zero displacement in position, installs sends out the absolute zero point localization signal in the absolute zero point micros witch, later puter as necessary will send out the goal to pensate to pensate the signal, will carry on the position error to the engine bed to pensate. The cosine generator assigns slide guage initiation signal a electricity and by step of transmission. 3. feedbacks pensates the openloop control Chart 2 has produced this kind of system schematic diagram. This system surveys two parts by the openloop control and the induction synchromesh direct position to be posed. Here position examination does not serve as the position the feedback, but is pensates the feedback as the position error. Its cardinal principle is: Installs the instruction pulse by the engine bed numerical control which CNC sends out, on the one hand the supplies open system, the control stepbysteps the electrical machinery according to the instruction revolution, and the direct drive platen moves, constitutes the openloop control。,M)/CAPP/CAM integrative system [J]. the puteraided design and makes, 1998, 28 (5): 5155. [3].Zeng Hui E, Zhou Qingzhong. studied J based on the characteristic mechanical product modelling ]. the machinery to suppose Counts with the manufacture [ the regulation, 1,999, 28 (2): 12 ~ l4. 譯文： 數(shù)控機(jī)床開環(huán)控制伺服系統(tǒng) 開環(huán)系統(tǒng)的優(yōu)點(diǎn)是系 統(tǒng)簡(jiǎn)單、成本低，但缺點(diǎn)是精度不高。作為傳統(tǒng)元件的齒輪、絲杠盡管制造精度很高，但總免不了存在間隙。這樣在零件的設(shè)計(jì)階段，設(shè)計(jì)者只需輸入特征的參數(shù)，系統(tǒng)直接生成特征的實(shí)例模型：在數(shù)據(jù)庫(kù)中我們必須存儲(chǔ)相關(guān)的特征類的結(jié)構(gòu)信息，數(shù)據(jù)庫(kù)表集就是用于存儲(chǔ)這一部分的相關(guān)信息。在特征層，利用特征 ID、幾何要素 ID、尺寸 ID、公差 ID、粗糙度 ID 等主鍵進(jìn)行數(shù)據(jù)檢索。從而方便了 CAPP 的零件信息獲取，提高了工藝設(shè) 計(jì)的效率。把這些補(bǔ)償點(diǎn)列成誤差 .修正表存入計(jì)算機(jī)，當(dāng)工作臺(tái)由零點(diǎn)位置移動(dòng)時(shí)，安裝在絕對(duì)原 點(diǎn)處的微動(dòng)開關(guān)發(fā)出絕對(duì)原點(diǎn)定位信號(hào)，以后計(jì)算機(jī)將隨時(shí)發(fā)出目標(biāo)補(bǔ)償點(diǎn)的補(bǔ)償信號(hào)，對(duì)機(jī)床進(jìn)行定位誤差補(bǔ)償。工作在鑒幅方式的感應(yīng)同步器此時(shí)既是位置檢測(cè)器， 又是比較器，它把由正、余弦發(fā)生器給定的滑尺激磁信號(hào)傳送給步進(jìn)電機(jī)。,M)／ CAPP／ CAM 集成系統(tǒng) [J]．計(jì)算機(jī)輔助設(shè)計(jì)與制造， 1998， 28(5)： 51 55． [3]. 曾慧娥，周慶忠．基于特征的機(jī)械產(chǎn)品造型研究 [J]．機(jī)械設(shè)計(jì)與制造 [程，1999， 28(2)： 1 2～ l4．
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