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2、外文資料翻譯 1 機(jī)床數(shù)控改造 一、數(shù)控系統(tǒng)發(fā)展簡史及趨勢 1946 年誕生了世界上第一臺電子計(jì)算機(jī)，這表明人類創(chuàng)造了可增強(qiáng)和部分代替腦力勞動(dòng)的工具。它與人類在農(nóng)業(yè)、工業(yè)社會中創(chuàng)造的那些只是增強(qiáng)體力勞動(dòng)的工具相比，起了質(zhì)的飛躍，為人類進(jìn)入信息社會奠定了基礎(chǔ)。 6 年后，即在1952 年，計(jì)算機(jī)技術(shù)應(yīng)用到了機(jī)床上，在美國誕生了第一臺數(shù)控機(jī)床。從此，傳統(tǒng)機(jī)床產(chǎn)生了質(zhì)的變化。近半個(gè)世紀(jì)以來，數(shù)控系統(tǒng)經(jīng)歷了兩個(gè)階段和六代的發(fā)展。 控（ 段（ 1952 1970 年） 早期計(jì)算機(jī)的運(yùn)算速度低，對當(dāng)時(shí)的科學(xué)計(jì)算和數(shù)據(jù)處理影響還不大， 但不。

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4、外文資料翻譯1機(jī)床數(shù)控改造一、數(shù)控系統(tǒng)發(fā)展簡史及趨勢1946 年誕生了世界上第一臺電子計(jì)算機(jī)，這表明人類創(chuàng)造了可增強(qiáng)和部分代替腦力勞動(dòng)的工具。它與人類在農(nóng)業(yè)、工業(yè)社會中創(chuàng)造的那些只是增強(qiáng)體力勞動(dòng)的工具相比，起了質(zhì)的飛躍，為人類進(jìn)入信息社會奠定了基礎(chǔ)。6 年后，即在 1952 年，計(jì)算機(jī)技術(shù)應(yīng)用到了機(jī)床上，在美國誕生了第一臺數(shù)控機(jī)床。從此，傳統(tǒng)機(jī)床產(chǎn)生了質(zhì)的變化。近半個(gè)世紀(jì)以來，數(shù)控系統(tǒng)經(jīng)歷了兩個(gè)階段和六代的發(fā)展。1.1、數(shù)控（NC）階段（19521970 年）早期計(jì)算機(jī)的運(yùn)算速度低，對當(dāng)時(shí)的科學(xué)計(jì)算和數(shù)據(jù)處理影響還不大，但。

5、數(shù)控機(jī)床改造研究為了我國民營企業(yè)的生存與發(fā)展,提高數(shù)控機(jī)床的速度是必要的。轉(zhuǎn)型所需的設(shè)備一般數(shù)控機(jī)床,包括傳統(tǒng)和最近從國外引進(jìn)的一個(gè)問題,由于不能放入機(jī)床設(shè)備和生產(chǎn)線。首先,數(shù)控機(jī)床和生產(chǎn)線改造的主要內(nèi)容為:(1)恢復(fù)原有的功能、機(jī)床、生產(chǎn)線有一些故障診斷和恢復(fù);(2),NC-based 一般機(jī)床設(shè)備或添加加數(shù)顯著數(shù)控系統(tǒng);(3)改造,提高精度、效率和自動(dòng)化程度,機(jī)械,電氣部件的改造、機(jī)械部分的維護(hù)過程中,才能恢復(fù)到最初的辨識精度,不能滿足生產(chǎn)要求的數(shù)控系統(tǒng)被更新到最新的數(shù)控;(4)技術(shù)更改或技術(shù)創(chuàng)新,以提高性能和品位,或使用新技。

6、數(shù)控機(jī)床及電氣改造,2005.11,數(shù)字控制（numericalcontrol）是一種自動(dòng)控制技術(shù)，是用數(shù)字化信號對機(jī)床運(yùn)動(dòng)及其加工過程進(jìn)行控制的一種方法，簡稱為數(shù)（NC）。IFIP第五技術(shù)委員會對數(shù)控機(jī)床作了如下定義：數(shù)控機(jī)床是一個(gè)裝有程序控制系統(tǒng)的機(jī)床。該系統(tǒng)能夠邏輯地處理具有使用號碼，或其他符號編碼指令規(guī)定的程序。數(shù)控系統(tǒng)(程序控制系統(tǒng))是一種控制系統(tǒng),能自動(dòng)閱讀輸入載體上事先給定的數(shù)字值。

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10、外文資料翻譯 1 機(jī)床數(shù)控改造 一、數(shù)控系統(tǒng)發(fā)展簡史及趨勢 1946 年誕生了世界上第一臺電子計(jì)算機(jī)，這表明人類創(chuàng)造了可增強(qiáng)和部分代替腦力勞動(dòng)的工具。它與人類在農(nóng)業(yè)、工業(yè)社會中創(chuàng)造的那些只是增強(qiáng)體力勞動(dòng)的工具相比，起了質(zhì)的飛躍，為人類進(jìn)入信息社會奠定了基礎(chǔ)。 6 年后，即在1952 年，計(jì)算機(jī)技術(shù)應(yīng)用到了機(jī)床上，在美國誕生了第一臺數(shù)控機(jī)床。從此，傳統(tǒng)機(jī)床產(chǎn)生了質(zhì)的變化。近半個(gè)世紀(jì)以來，數(shù)控系統(tǒng)經(jīng)歷了兩個(gè)階段和六代的發(fā)展。 控（ 段（ 1952 1970 年） 早期計(jì)算機(jī)的運(yùn)算速度低，對當(dāng)時(shí)的科學(xué)計(jì)算和數(shù)據(jù)處理影響還不大， 但不。

11、河北建筑工程學(xué)院 畢業(yè)設(shè)計(jì)計(jì)算書 指導(dǎo)教師：孫長山 設(shè) 計(jì) 題 目 ： 前 板 連 續(xù) 模 設(shè) 計(jì) 及 沖 壓 工 藝 分 析英文原文 .M 946 in to to It in is to up to 952, to S. of 1952 970) is to to to an to is C), 952 - 1959 - 1965 - 970 - 970, it on in of to 971, in - on it 北建筑工程學(xué)院 畢業(yè)設(shè)計(jì)計(jì)算書 指導(dǎo)教師：孫長山 設(shè)計(jì)題目： 前板連續(xù)模設(shè)計(jì)及沖壓工藝分析2 be to be is 974 in is an to in at it to to be is 990, PC to on C In 970 - 1974 - 990 - (C. as we , 1.3 to on C of C so on C to at so on by PC to be 河北。

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